JP4623134B2 - Non-moldable part detection device, non-moldable part detection system, and non-moldable part detection program - Google Patents

Description

The present invention relates to a non-moldable part detection device, a non-moldable part detection system, and a non-moldable part detection program .

  Conventionally, parts constituting a product such as a machine product have been drafted for each part, and a computer as an electronic computer is used to perform the drafting. For example, 3D-CAD, that is, 3Dimension- It is common practice to use a design support system such as Computer Aided Design or 3D computer support design. In addition, when mass producing the drafted parts, a mold corresponding to the shape of the part is produced and molded, but when designing the mold, in order to increase production efficiency, a concave portion or the like that the part has Therefore, it is designed in consideration of the presence or absence of a so-called under-moldable portion that cannot be molded simply by moving in one direction.

Here, regarding the determination of the presence or absence of the undercut, an engineer generally confirms the problem, and there is a problem that highly skilled knowledge about mold design is required, and confirmation takes time. In order to deal with this problem, for example, in the 3D-CAD, research and development regarding a technique for automatically recognizing the undercut is being actively performed.
As a technique for automatically recognizing the undercut, for example, a technique described in Patent Document 1 below is known.

  In Japanese Patent Application Laid-Open No. 2008-3963 as Patent Document 1, when a reference vector (V1) indicating a direction in which a product (20) is pushed out from a mold is input, a surface (the surface of the product (20)) ( 22) Calculate a normal vector (V2) extending from the sampling point on the surface, and based on the inner product of the reference vector (V1) and the normal vector (V2), the surface (22) A technique for determining whether the surface is a cavity-side surface that contacts a female die or the core-side surface that contacts a male die of the mold is described. Further, in Patent Document 1, a straight line extending along the vector (V3) in the direction opposite to the reference vector (V1) from the sampling point on the core-side surface (22) is indicated in addition to the product (20). A technique for determining whether or not the surface (22) is undercut by determining whether or not it intersects the surface (22) is described. Further, in Patent Document 1, a straight line extending from the sampling point along the reference vector (V1) intersects the other surface (22) of the product (20) for the cavity-side surface (22). A technique for determining whether or not the surface (22) is undercut by determining whether or not the surface is undercut is described.

  That is, in Patent Document 1, it is determined whether any one of the surface (22) on the cavity side and the surface (22) on the core side in a pair is undercut. A technique for reducing the search time by about half is described. As a result, Patent Document 1 discloses that either the reference vector (V1) that is the extraction direction of the female mold of the mold or the vector (V3) in the opposite direction that is the extraction direction of the male mold of the mold. A technique for determining whether or not an undercut exists in only one direction is described.

JP 2008-3963 A ("0016", "0046" to "0077", FIGS. 5 to 15)

  It is a technical object of the present invention to facilitate the design of a molded product or a mold having no unmoldable part by automatically determining the presence / absence of the unmoldable part accurately and without skilled knowledge.

In order to solve the technical problem, an unmoldable part detecting device according to claim 1 is provided.
Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. wherein together be moved to the second-type disconnect direction by a and the third type can not be molded is moved to the third-type disconnect direction determined to be in unmoldable portion that can not be molded, said first unmoldable portion When there is no surface that reaches the second die-cutting direction straight line extending from the first unmoldable portion, the surface is adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line. A non- moldable part discriminating means for discriminating that the standing wall is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second unmoldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line The non- moldable part discriminating means for discriminating that a certain standing wall is not the unmoldable part;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is provided with.

In order to solve the technical problem, an unmoldable part detecting device according to claim 2 is provided.
A rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Center axis parallel discrimination means;
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means;
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means;
Normal computing means for computing the normal of any point on the surface;
First reverse direction component determination means for determining whether or not the normal line has a first reverse direction component that is a reverse direction component with respect to the first die cutting direction;
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
Second reverse direction component determination means for determining whether or not the normal line has a second reverse direction component that is a reverse direction component with respect to the second die cutting direction;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. The surface is determined to be an unmoldable portion that cannot be molded even if moved in the second die-cutting direction and cannot be molded even if the third die is moved in the third die-drawing direction, and the surface is the central axis And when the first upstream outer diameter is determined to be greater than or equal to the first downstream outer diameter in the entire central axis direction. A non-moldable part discriminating means for discriminating that the surface is not the non-moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the portion cannot be molded even if moved in the first die-cutting direction, and the third die cannot be molded even if moved in the third die-drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non-moldable part determining means for determining that the surface is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is provided with.

In order to solve the technical problem, the non-moldable part detecting device of the invention according to claim 3 is:
Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The surface determined to be the first unmoldable part is defined as a first unmoldable surface, and the surface determined to be adjacent to the first unmoldable surface and not the first unmoldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining whether or not
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining whether or not
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. A non-moldable part discriminating means for discriminating that it is a non-moldable part that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction; ,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is provided with.

According to a fourth aspect of the present invention, in the non-moldable part detecting device according to the third aspect ,
Based on the first normal and the second normal when the normal of the first non-moldable surface is the first normal and the normal of the first adjacent surface is the second normal, First connection angle calculating means for calculating a first connection angle formed by the first non-moldable surface and the first adjacent surface with respect to the boundary line;
The first concave connection determining means for determining whether the first unmoldable surface and the first adjacent surface are connected in a concave shape based on the first connection angle;
When the normal of the second non-moldable surface is the first normal and the normal of the second adjacent surface is the second normal, based on the first normal and the second normal, Second connection angle calculating means for calculating a second connection angle formed by the second non-moldable surface and the second adjacent surface with respect to the boundary line;
The second concave connection determining means for determining whether the second unmoldable surface and the second adjacent surface are connected in a concave shape based on the second connection angle;
It is provided with.

The invention according to claim 5 is the non-moldable part detecting device according to any one of claims 1 to 4 ,
The third die cutting direction straight line is a straight line on a plane orthogonal to a straight line connecting the first die cutting direction straight line and the second die cutting direction straight line.
It is characterized by that.

A sixth aspect of the present invention provides the non-moldable part detecting device according to any one of the first to fifth aspects,
It is determined that there is a surface that the second mold drawing direction straight line reaches, and the first unmoldable portion that is determined that there is no surface that the third mold drawing direction straight line reaches is the third mold. A third moldable part discriminating means for discriminating from a third moldable part that can be molded by moving in the third mold drawing direction;
The second non-moldable portion that is determined that there is a surface that the first die-cutting direction straight line reaches and that the third die-cutting direction straight line does not exist can be formed into the third shape. Said third moldable part discriminating means for discriminating the part,
The molded product display means for displaying the third moldable portion;
It is provided with.

In order to solve the technical problem, the non-moldable part detection system of the invention according to claim 7 comprises:
Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. The first unmoldable portion is determined to be a non-moldable portion that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction. When there is no surface that reaches the second die-cutting direction straight line extending from the first unmoldable portion, the surface is adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line. A non-moldable part discriminating means for discriminating that the standing wall is not the non-moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second unmoldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line The non-moldable part determining means for determining that a certain standing wall is not the non-moldable part;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is provided with.

In order to solve the technical problem, the non-moldable part detection system of the invention according to claim 8 comprises:
A rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Center axis parallel discrimination means;
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means;
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means;
The normal computing means for computing the normal of any point on said surface,
The normals, a first opposite direction component determining means for determining whether a first reverse component is a reverse direction component with respect to the first-type disconnect direction,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
Second reverse direction component determination means for determining whether or not the normal line has a second reverse direction component that is a reverse direction component with respect to the second die cutting direction;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projection straight reach determination means second type disconnect direction line extending from said first unmoldable unit to the second type disconnect direction is determined whether or not there is a surface to reach,
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists has the second die. It is determined that the portion cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction, and the surface is the central axis. And when the first upstream outer diameter is greater than or equal to the first downstream outer diameter in the entire area in the central axis direction. A non- moldable part discriminating means for discriminating that the surface is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the portion cannot be molded even if moved in the first die-cutting direction, and the third die cannot be molded even if moved in the third die-drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non-moldable part determining means for determining that the surface is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is characterized by having.

In order to solve the technical problem, an unmoldable part detection system according to claim 9 is provided.
Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The surface determined to be the first unmoldable part is defined as a first unmoldable surface, and the surface determined to be adjacent to the first unmoldable surface and not the first unmoldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining whether or not
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means;
The normal line is a second mold drawing direction as a mold drawing direction of a second mold corresponding to the first mold, and is in the second mold drawing direction opposite to the first mold drawing direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining whether or not
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. A non-moldable part discriminating means for discriminating that it is a non-moldable part that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction; ,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
It is provided with.

In order to solve the technical problem, the non-moldable part detection program according to the invention of claim 10
Computer
Normal computing means for computing the normal of any point on each surface constituting the three-dimensional shape of the molded product;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determining means for determining whether or not
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not it has a second reverse direction component which is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface on which a second mold drawing direction straight line extending in the second mold drawing direction from the first unmoldable portion exists;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. The first unmoldable portion is determined to be a non-moldable portion that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction. When there is no surface that reaches the second die-cutting direction straight line extending from the first unmoldable portion, the surface is adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line. Non-moldable part discriminating means for discriminating that the standing wall is not the unmoldable part
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second unmoldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line The non-moldable part discriminating means for discriminating that a certain standing wall is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface;
It is made to function as .

In order to solve the technical problem, the non-moldable part detection program of the invention according to claim 11
Computer
Rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Central axis parallel discrimination means,
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means,
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means,
Normal computing means for computing the normal of any point on said surface,
The normals, the first reverse component determining means for determining whether a first reverse component is a reverse direction component with respect to the first-type disconnect direction,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means;
Second reverse direction component determination means for determining whether or not the normal line has a second reverse direction component that is a reverse direction component with respect to the second die cutting direction;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The second projection straight reach determination means second type disconnect direction line extending from said first unmoldable unit to the second type disconnect direction is determined whether or not there is a surface to reach,
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. The surface is determined to be an unmoldable portion that cannot be molded even if moved in the second die-cutting direction and cannot be molded even if the third die is moved in the third die-drawing direction, and the surface is the central axis And when the first upstream outer diameter is determined to be greater than or equal to the first downstream outer diameter in the entire central axis direction. , Non- moldable part discriminating means for discriminating that the surface is not the non-moldable part,
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the portion cannot be molded even if moved in the first die-cutting direction, and the third die cannot be molded even if moved in the third die-drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non-moldable part determining means for determining that the surface is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface;
It is made to function as.

In order to solve the technical problem, the non-moldable part detection program according to the invention of claim 12
Computer
Normal computing means for computing the normal of any point on each surface constituting the three-dimensional shape of the molded product ;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determining means for determining whether or not
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means;
The surface determined to be the first non-moldable portion is defined as a first non-moldable surface, and the surface determined to be adjacent to the first non-moldable surface and not the first non-moldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means,
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not it has a second reverse direction component which is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means,
The second projection straight reach determination means second type disconnect direction line extending from said first unmoldable unit to the second type disconnect direction is determined whether or not there is a surface to reach,
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. A non-moldable part discriminating means for discriminating that it is a non-moldable part that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction ;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface ;
It is made to function as .

According to the first , seventh , and tenth aspects of the present invention, the presence / absence of a non-moldable portion can be accurately and automatically determined as compared with the case without the configuration of the present invention, and there is no non-moldable portion without skilled knowledge. The design of the molded product and the mold can be facilitated. Moreover, according to invention of Claim 1,7,10, while it can discriminate | determine that the said standing wall which can be shape | molded in the said 1st die-cutting direction is not the said unmoldable part, the said 2nd die-cutting direction It can be determined that the standing wall that can be molded is not the unmoldable portion.

According to the invention described in claims 2 , 8 , and 11 , the presence / absence of the unmoldable portion can be automatically and accurately determined compared to the case without the configuration of the present invention, and there is no unmoldable portion without skilled knowledge. The design of the molded product and the mold can be facilitated. Further, according to the second, eighth, and eleventh aspects of the present invention, it is possible to accurately determine whether or not the rotating surface is a non-moldable portion as compared with the case where the configuration of the present invention is not provided.
According to the third , ninth , and twelfth aspects of the present invention, the presence / absence of a non-moldable portion can be automatically and accurately determined as compared with the case without the configuration of the present invention, and there is no non-moldable portion without skilled knowledge. The design of the molded product and the mold can be facilitated. Further, according to the third, ninth, and twelfth aspects of the present invention, it can be determined whether or not the first adjacent surface is the first unmoldable portion connected in a concave shape with the first unmoldable surface. It can be determined whether or not the second adjacent surface is the second unmoldable portion connected concavely with the second unmoldable surface.

According to the invention described in claim 4, it is possible to determine by simple calculation whether or not the first adjacent surface is the first unmoldable portion as compared with the case where the configuration of the present invention is not provided. It can be determined by simple calculation whether or not the second adjacent surface is the second unmoldable part.
According to the fifth aspect of the present invention, the surface reached by the third mold drawing direction straight line that is a straight line on a plane orthogonal to the straight line connecting the first mold drawing direction straight line and the second mold drawing direction straight line. The first unmoldable part and the second unmoldable part cannot be molded even if the third mold is moved in the third die-drawing direction of the straight line. It can be determined whether or not.
According to invention of Claim 6, it can be discriminate | determined whether the said 1st non-moldable part and the said 2nd non-moldable part are the said 3rd moldable part.

Next, specific examples (examples) of the embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The directions indicated by Z and -Z or the indicated side are defined as front, rear, right, left, upper, lower, or front, rear, right, left, upper, and lower, respectively.
In the figure, “•” in “○” means an arrow pointing from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.
In the following description using the drawings, illustrations other than the components and members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an overall explanatory diagram of a design support system according to a first embodiment of the present invention.
In FIG. 1, the design support system S including the function of the unmoldable part detection system according to the first embodiment is designed to include the function of the unmoldable part detection device for drawing each molded product constituting a product such as a mechanical product. A client personal computer PC is provided as an example of a support device. The client personal computer PC is an example of a design support usage permission device for granting a license for the use of the design support system S to the client personal computer PC that is properly registered via the network N as an example of an information communication line. Connected to the license server LSV. The network N according to the first embodiment is configured by a so-called Internet line. Further, the client personal computer PC and the license server LSV of the first embodiment are configured by a computer device as an example of an electronic computer.

  The client personal computer PC according to the first embodiment includes a computer main body H1 as an example of a computer main body, a display H2 as an example of an output display device, a keyboard H3 and a mouse H4 as examples of an input device, and an example of a storage device (not shown). As an HD drive, that is, a hard disk drive, a CD drive as an example of a storage medium reading device, that is, a compact disk drive. Further, the license server LSV of the first embodiment is also composed of a computer main body H1, a hard disk drive (not shown), a CD drive, and the like, similar to the client personal computer PC.

(Description of the control part of Example 1)
FIG. 2 is a functional block diagram illustrating the functions of the control unit of the client personal computer and the license server according to the first embodiment.
FIG. 3 is a functional block diagram following FIG.
(Explanation of control part of client PC)
2 and 3, the computer main body H1 of the client personal computer PC performs I / O for input / output of signals to / from the outside and adjustment of input / output signal levels, that is, an input / output interface and necessary processing. ROM, ie, Read Only Memory: read-only memory, RAM for temporarily storing necessary data, ie, Random Access Memory: random access memory, hard disk, etc. A CPU that performs processing according to a program, that is, a central processing unit, a central processing unit, a clock oscillator, and the like are included.

The client personal computer PC having the above configuration can realize various functions by executing a program stored in the hard disk, ROM, or the like.
The hard disk of the client personal computer PC has an operating system OS as basic software for controlling basic operations of a computer device, and a design support use authentication program for obtaining the use permission information of the design support system S from the license server LSV. AP1, design support program AP2 including a function of a non-moldable part detection program for drawing each molded product, word processor software as document creation software (not shown), application programs such as e-mail transmission / reception software, etc. are stored. Has been. Hereinafter, functions (control means) of the programs AP1 and AP2 except the conventionally known operating system OS and application programs (not shown) will be described.

(Design support use certification program AP1)
The design support use authentication program AP1 authorizes the use of the design support system S and registration application information transmitting means C1 for transmitting registration application information which is information indicating that the application for registration in the design support system S is applied. Use permission information receiving means C2 for receiving the use permission information, and use permission information storage means C3 for storing the use permission information. The client personal computer PC according to the first exemplary embodiment uses the design support system S by transmitting and receiving information to and from the license server LSV and obtaining the use permission information based on the registration application information. Get permission.

(Design support program AP2)
FIG. 4 is an enlarged explanatory view of a main part for showing the relationship between the normal vector and the cavity direction at the grid intersection of the grid lines in the u direction and the v direction shown on the surface of the molded product.
C101: Drafting start discriminating means The drafting start discriminating means C101 has a die cutting direction input discriminating means C101A and a ruled line interval input discriminating means C101B, and whether or not to start drafting a molded product by the design support system S. Is determined.
C101A: Die-cutting direction input determining means The mold-cutting direction input determining means C101A determines whether or not the die-cutting direction of the mold of the molded product shown in FIG. 4 has been input. The die cutting direction input determining means C101A of Example 1 is a cavity plate as an example of a first die of the molded product, that is, a cavity direction as an example of a first die cutting direction that is a so-called female die cutting direction. KH1 and a core plate as an example of a second mold corresponding to the female mold, the second mold drawing direction as a so-called male mold drawing direction, which is the direction opposite to the cavity direction. It is determined whether or not a core direction KH2 as an example of a die cutting direction is input. In the die cutting direction input determining unit C101A of the first embodiment, for example, the upward direction, that is, the + Z direction is input as the cavity direction KH1, and the downward direction, that is, the −Z direction is input as the core direction KH2. Entered.
C101B: Ruled line interval input determining unit The ruled line interval input determining unit C101B determines whether the u-direction interval Lu and the v-direction interval Lv of the grid lines shown on each surface of the molded article shown in FIG. .
C102: Use Permission Unit The use permission unit C102 determines whether or not the client personal computer PC has obtained a proper use license of the design support system S based on the use permission information stored in the use permission information storage unit C3. The license processing is performed to determine whether or not.

FIG. 5 is an explanatory diagram of a molded product image of Example 1. FIG.
C103: Molded Product Image Display Control Unit The molded product image display control unit C103 as an example of the molded product display unit has a molded product information storage unit C103A, and the three-dimensional shape information of the molded product shown in FIG. The display of the molded product image 1 is controlled. In FIG. 5, the molded product image 1 of Example 1 displays a developing container of a developing device of an image forming apparatus as an example of the molded product. In addition, the molded product image 1 is a non-moldable part detection process for detecting a non-moldable part (M8) that cannot be molded only by moving the mold of the molded product shown in FIG. Among the non-moldable part detection buttons 2 for executing the above and the boundary lines (L) that divide each surface of the molded product shown in FIG. 9A described later, two surfaces (FM1, FM2) that should originally be the same surface ), An unnecessary boundary line detection button 3 for executing an unnecessary boundary line detection process for detecting an unnecessary boundary line (L1) that is an unnecessary boundary line, and the boundary line (L) shown in FIG. Among the concave and convex portions formed by the first surface (FM1) and the second surface (FM2) connected by the boundary line (L), the first surface (FM1) and the second surface ( FM2) is a predetermined connection angle ( , Β ′), the so-called pointed concave and convex portions (E1), the so-called mold edge and the pointed convex portion (E2), the so-called pointed concave and convex portion for executing the so-called pointed concave and convex portion detecting process for detecting the product edge And a detection button 4.

C103A: Molded product information storage unit The molded product information storage unit C103A includes surface information storage unit C103A1 that stores surface information of each surface of the molded product, and boundary line information such as coordinates of both ends of each boundary line of the molded product. Boundary line information storage means C103A2 for storing the molded product information of the molded product constituted by the surface information and the boundary line information.
C104: Normal calculation means The normal calculation means C104 is set on the surface, and normal vectors (h1) as examples of normal lines at normal calculation points (p1 to p17, P) where normals are calculated. ˜h16, HV1, HV2). In Example 1, as the normal calculation points (p1 to p17, P), the grid intersections (p1 to p16) on each surface shown in FIG. 4 and the above-described respective points shown in FIGS. 9 to 11 described later. The midpoint (P) of the boundary line is used.
C105: Unmoldable part detecting means The unmoldable part detecting means C105 includes a first unmoldable part determining means C105A, a first adjacent unmoldable part determining means C105B, a first projection unmoldable part determining means C105C, and a first molding. Impossible part setting storage means C105D, second unmoldable part determination means C105A ', second adjacent unmoldable part determination means C105B', second projection unmoldable part determination means C105C ', and second unmoldable part setting storage Means C105D ', unmoldable part determining means C105D, unmoldable part setting storage means C105E, third moldable part setting storage means C105F, moldable part setting storage means C105G, unmoldable part display means C105H, A non-formable part (M8) is detected when the non-formable part detection button 2 is selected. The unmoldable portion detection process is performed.

C105A: First unmoldable part determining means The first unmoldable part determining means C105A has ruled line intersection calculating means C105A1 and first reverse direction component determining means C105A2, and is based on the normal vector (h1 to h16). Thus, it is determined whether or not each surface is a cavity-side non-moldable part (M1) as an example of a first non-moldable part that cannot be molded simply by moving the female mold in the cavity direction KH1.
C105A1: Ruled line intersection calculation means The ruled line intersection calculation means C105A1, as shown in FIG. 4, is based on the u-direction interval Lu and the v-direction interval Lv inputted in advance, and u-direction grid lines on each surface. And grid intersection points p1 to p16 on the surfaces, which are intersection points of the v-direction grid lines and the boundary lines surrounding the surfaces.
C105A2: First reverse direction component discriminating means As shown in FIG. 4, the first reverse direction component discriminating means C105A2 receives the normal vectors h1 to h16 calculated from the grid intersection points p1 to p16. It is determined whether or not it has a cavity reverse direction component as an example of a first reverse direction component that is a reverse direction component with respect to the direction KH1. Therefore, the first unmoldable part discriminating means C105A according to the first embodiment is configured such that each surface is defined as the cavity-side unmoldable part (M1) if there is at least one normal vector h1 to h16 having the cavity reverse direction component. It is determined that

FIG. 6 is an enlarged explanatory view of a main part for illustrating the relationship between the cavity-side non-moldable surface and the cavity-side concave connection surface of the molded product, and FIG. FIG. 6B is an explanatory view showing a state where the cavity-side non-moldable surface and the cavity-side adjacent surface are connected in a convex shape.
C105B: First adjacent non-moldable part discriminating means The first adjacent non-moldable part discriminating means C105B has first adjacent surface discriminating means C105B1, first connection angle calculating means C105B2, and first concave connection discriminating means C105B3. As shown in FIG. 6, the surface determined as the cavity-side non-moldable part (M1 to M3) by the first non-moldable part determining means C105A is defined as the cavity-side non-moldable surface M1, and the cavity-side molding is performed. The cavity side connected to the cavity-side non-moldable surface M1 in a concave shape when the surface adjacent to the cavity-side non-moldable surface M1 is determined as the cavity-side non-moldable surface M2, M2 ′. It is determined that the cavity-side concave connection surface M2 that is the adjacent surface M2 is the cavity-side unmoldable portion (M2).

C105B1: First adjacent surface discrimination means The first adjacent surface discrimination means C105B1 determines whether or not each of the surfaces determined not to be the cavity-side unmoldable surface M1 is the cavity-side adjacent surfaces M2 and M2 'shown in FIG. Is determined. That is, it is determined whether or not the surfaces adjacent to the respective surfaces determined not to be the cavity-side unmoldable surface M1 are the cavity-side unmoldable portions (M1 to M3).
C105B2: First connection angle calculation means The first connection angle calculation means C105B2 includes the cavity side adjacent surfaces M2 and M2 ′ shown in FIG. 6 and the cavity side non-moldable surface adjacent to the cavity side adjacent surfaces M2 and M2 ′. The connection angles α and α ′ as an example of the first connection angle with M1 are calculated. The first connection angle calculation means C105B2 of Example 1 includes normal vectors (h1 to h16) as examples of first normal lines on the cavity-side unmoldable surface M1, and the cavity-side adjacent surfaces M2, M2 ′. Based on the normal vectors (h1 to h16) as an example of the second normal line above, the connection angles α and α ′ are calculated.

C105B3: First concave connection determination means The first concave connection determination means C105B3 is the cavity-side concave connection surface M2 in which the cavity-side non-moldable surface M1 and the cavity-side adjacent surfaces M2, M2 ′ are connected in a concave shape. It is determined whether or not. Said first concave connecting determining means C105B3 of Example 1, wherein the articulation angle calculated by the first connection angle calculating means C105B2 alpha, whether alpha 'is preset lower than the concave connection determination value alpha _max It is determined whether or not the cavity-side non-moldable surface M1 and the cavity-side adjacent surfaces M2 and M2 ′ are connected in a concave shape. In the first embodiment, for example, the concave connection determination value α _max can be preset to 180 °. Therefore, the first adjacent non-moldable part discriminating means C105B of Example 1 uses the cavity-side non-moldable part (M1 to M3) and the cavity-side concave connection surface M2 connected in a concave shape to the cavity-side non-moldable part ( M1, M2).

FIG. 7 is an enlarged explanatory view of the main part of the cavity direction straight line extending from the cavity side projection surface of the molded product, FIG. 7A is a cross-sectional view of a state where the surface that the cavity direction straight line reaches exists, and FIG. It is sectional drawing of the state in which the surface which a straight line reaches | attains does not exist.
C105C: first projection unmoldable portion determining means The first projection unmoldable portion determining means C105C includes first projection straight line arrival determining means C105C1 and standing wall determining means C105C2, as shown in FIG. When (M2 ′) is the cavity-side projection surfaces M3 and M3 ′, based on a cavity direction straight line KL1 as an example of a first die-cutting direction straight line extending from the cavity-side projection surfaces M3 and M3 ′ in the cavity direction KH1. Then, it is determined whether or not the cavity-side projection surfaces M3 and M3 ′ are the cavity-side unmoldable portions (M1 to M3). The first projection unmoldable part discriminating means C105C of Example 1 is the cavity side unmoldable part (M1, M2) in the first non-moldable part distinguishing means C105A and the first adjacent unmoldable part distinguishing means C105B. For each of the surfaces (M2 ′) that has not been determined as “target”, it is determined whether or not the cavity-side projection surfaces M3 and M3 ′ are the cavity-side unmoldable portions (M1 to M3).

C105C1: First projected straight line arrival determining means As shown in FIG. 7, the first projected straight line arrival determining means C105C1 has a surface M4 on which the cavity direction straight line KL1 extending from the cavity-side projected surfaces M3 and M3 ′ reaches. It is determined whether or not. Therefore, the first projection unmoldable portion discriminating means C105C of Embodiment 1 determines that the cavity side projection surface M3 on which the surface M4 exists is the cavity side unmoldable portions M1 to M3.
C105C2: Standing wall discriminating means The standing wall discriminating means C105C2 has the standing wall M5, which is a surface adjacent to the cavity-side projection surface M3 ′ where the surface M4 does not exist and parallel to the cavity direction straight line KL1 shown in FIG. 7B. Determine whether or not. Therefore, the first projection unmoldable part discriminating means C105C of Example 1 determines that the cavity side projection surface M3 ′ and the standing wall M5 where the surface M4 does not exist are not the cavity side unmoldable parts M1 to M3. .

C105D: first non-moldable part setting storage means The first non-moldable part setting storage means C105D includes the first non-moldable part determination means C105A, the first adjacent non-moldable part determination means C105B, and the first projection non-moldable part determination. The means C105C sets and stores the respective surfaces M1 to M3 determined to be the cavity side unmoldable portions M1 to M3 as the cavity side unmoldable portions M1 to M3.
Here, the second unmoldable part determining means C105A ′, the second adjacent unmoldable part determining means C105B ′, the second projection unmoldable part determining means C105C ′, and the second unmoldable part setting storage means C105D ′. In the explanation, “′” is given to each means C105A, C105A1, C105A2, C105B, C105B1 to C105B3, C105C, C105C1, C105C2, C105D, and “first”, “female”, “cavity”, By replacing “KH1” and “KL1” with “second”, “male”, “core”, “KH2”, and “KL2”, respectively, the first unmoldable portion discriminating means C105A and the first adjacent Same as the description of the unmoldable part determining unit C105B, the first projection unmoldable part determining unit C105C, and the first unmoldable part setting storage unit C105D. To become, a detailed description thereof will be omitted.

C105E: Unmoldable part determining means The unmoldable part determining means C105E includes third moldable part determining means C105E1, and the cavity side unmoldable parts M1 to M3 stored in the first unmoldable part setting storage means C105D. Can be formed even if the male mold is moved in the core direction KH2, and a slide core as an example of the third mold other than the female mold and the male mold is formed in a direction other than the cavity direction KH1 and the core direction KH2. It is determined whether or not it is the unmoldable portion (M8) that cannot be molded even if moved in the standard slide direction KH3 as an example of the third mold drawing direction. Further, the non-moldable part discriminating means C105E may move the female mold in the cavity direction KH1 by moving the core-side non-moldable parts M1 to M3 stored in the second non-moldable part setting storage means C105D ′. It is determined whether or not the unmoldable portion (M8) cannot be molded and cannot be molded even if the slide core is moved in the standard slide direction KH3.

  Note that the standard slide direction KH3 of Example 1 is obtained when the + Z direction is input as the cavity direction KH1 and the -Z direction is input as the core direction KH2 in the die cutting direction input determination unit C101A. It is set in advance so as to be a straight line connecting the cavity direction straight line KL1 and the core direction straight line KL2, that is, a straight line on the XY plane orthogonal to the straight line in the Z-axis direction. Specifically, when the cavity direction straight line KL1 is a + Z direction straight line and the core direction straight line KL2 is a −Z direction straight line, the standard slide direction straight line KL3 is the front-rear direction ± X direction and left-right direction. These are set in advance so as to be four straight lines in the ± Y direction.

C105E1: Third moldable part discriminating means The third moldable part discriminating means C105E1 has third projection straight line arrival discriminating means C105E1a, and the core projection straight line KL2 reaches by the second projection straight line arrival discriminating means C105C1 ′. The cavity-side unmoldable portion that is determined that there is a surface M4 to be detected and that there is no surface that reaches the standard slide direction straight line KL3 as an example of a third die-drawing direction straight line that extends in the standard slide direction KH3 M1 to M3 are determined as third moldable portions (M6 and M7) that can be molded by moving the slide core in the standard slide direction KH3. The third moldable part discriminating means C105E1 is determined by the first projection straight line arrival discriminating means C105C1 that the surface M4 that the cavity direction straight line KL1 reaches exists, and the standard slide direction straight line KL3 reaches. The core-side unmoldable portions M1 to M3 determined to have no surface to be determined are determined as the third moldable portions (M6 and M7).

C105E1a: Third projected straight line arrival determining means The third projected straight line arrival determining means C105E1a is determined when the second projected straight line arrival determining means C105C1 ′ determines that the surface M4 to which the first core direction straight line KL2 reaches is present. Then, it is determined whether or not there is a surface on which the standard slide direction straight line KL3 reaches from the cavity side non-moldable parts M1 to M3 stored in the first non-moldable part setting storage means C105D. The third projected straight line arrival determining means C105E1a sets the second unmoldable portion setting when the first projected straight line arrival determining means C105C1 determines that there is a surface M4 to which the cavity direction straight line KL1 reaches. It is determined whether or not there is a surface on which the standard slide direction straight line KL3 reaches from the core-side unmoldable portions M1 to M3 stored in the storage unit C105D ′.

8 is an explanatory diagram of the unmoldable part and the third moldable part of Example 1, and FIG. 8A is a perspective explanatory view of a model of a molded product in which the cavity direction and the core direction are set in the vertical direction, and FIG. FIG. 8B is an explanatory diagram when FIG. 8A is viewed from the VIIIB direction which is the cavity direction.
For example, as shown in FIG. 8, the third projected straight line arrival determining means C105E1a of the first embodiment is configured such that the cavity direction straight line KL1 and the core direction straight line KL2 are straight lines in the ± Z direction for the model MD of the molded product. When the standard slide direction straight line KL3 is set to the straight line in the ± X direction that is the short direction of the model MD and the straight line in the ± Y direction that is the long direction, the cavity side molding of the molded product is set. For each surface (M6 to M8) that becomes the impossible part M1 to M3 or the core side unmoldable part M1 to M3, it is determined whether or not there is a surface that the standard slide direction straight line KL3 reaches.

  In addition, as shown in FIG. 8, the model MD of the first embodiment has a top plate MD1 extending in the Y-axis direction, that is, the left-right direction, and the −Y direction, that is, downward from both left and right ends of the top plate MD1. It has leg portions MD2 and MD2 extending. In addition, the front and rear end portions of the top plate MD1 are formed with eaves-like eaves portions MD3 and MD3 that extend along the left-right direction and extend downward, and the eaves portions MD3 and MD3 are formed in the left-right direction. A rectangular through hole MD3a that extends and penetrates in the front-rear direction is formed. In addition, rectangular through holes MD4 and MD4 penetrating the leg portions MD2 and MD2 in the left-right direction are formed in the front lower end portions of the leg portions MD2 and MD2. Furthermore, inwardly projecting prismatic first protrusions MDa and MDa are formed at the center of the inner surfaces of the legs MD2 and MD2, and project downward from the center of the lower end surface of the top plate MD1. A prismatic second protrusion MDb is formed.

Here, in each of the surfaces M6, M7, and M8 that are the cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3 shown in FIG. 8, the surface M6 has a surface in the + X direction. The surface M7 does not have a surface in the ± Y direction. The surface M8 has a surface in both the ± X direction and the ± Y direction, that is, the surfaces of the protrusions MDa, MDa, and MDb. Therefore, the third projected straight line arrival determining means C105E1a determines that there is no surface on the surfaces M6 and M7 that the standard slide direction straight line KL3 reaches. Further, it is determined that the surface M8 has a surface that the standard slide direction straight line KL3 reaches.
Accordingly, the third moldable part discriminating means C105E1 of Example 1 determines that the surfaces M6 and M7 are the third moldable part and determines that the surface M8 is not the third moldable part. . That is, the unmoldable part determining means C105E of Example 1 determines that the surface M8 is the unmoldable part, and determines that the surfaces M6 and M7 are not the unmoldable part.

C105F: Unmoldable part setting storage means The unmoldable part setting storage means C105F sets each of the surfaces M8 determined as the unmoldable part M8 by the unmoldable part determination means C105E as the unmoldable part M8. Remember.
C105G: Third moldable portion setting storage means The third moldable portion setting storage means C105G is determined as the third moldable portion M6, M7 by the third moldable portion determination means C105E1. M6 and M7 are set and stored as the third moldable portion M6 and M7.
C105H: Moldable part setting storage means The moldable part setting storage means C105H is configured such that the cavity-side non-moldable parts M1 to M3 are obtained by the first projection non-moldable part discrimination means C105C and the second projection non-moldable part discrimination means C105C ′. The surfaces (M3 ′, M5) that are not determined as core-side non-moldable portions M1 to M3 are set and stored as moldable portions M3 ′, M5 as surfaces that are not undercut. . Further, the moldable portion setting storage means C105H is not determined as the unmoldable portion M8 by the unmoldable portion determining means C105E and the third moldable portion determining means C105E1, and the third moldable portions M6, M7. The cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3 that are not determined as are set and stored as the moldable portions M1 to M3.

C105J: Unmoldable portion display means The unmoldable portion display means C105J as an example of the molded product display means displays all the unmoldable portions M8 stored in the unmoldable portion setting storage means C105F on the molded product image 1. indicate. The unmoldable portion display means C105J of Example 1 displays all the unmoldable portions M8 in red on the molded product image 1.
C105K: Third moldable part display means Third moldable part display means C105K as an example of a molded product display means includes all the third moldable parts M6 stored in the third moldable part setting storage means C105G. , M7 are displayed on the molded product image 1. The third moldable part display means C105K of Example 1 displays all the third moldable parts M6 and M7 in yellow on the molded product image 1 for display.

C106: Unnecessary boundary line detection means Unnecessary boundary line detection means C106 includes middle point calculation means C106A, normal line determination means C106B, curvature calculation means C106C, curvature determination means C106D as an example of a curved state determination means, and unnecessary. A boundary line setting storage unit C106E, a necessary boundary line setting storage unit C106F, and an unnecessary boundary line display unit C106G are provided. When the unnecessary boundary line detection button 3 is selected, the unnecessary boundary line (L1) is displayed. The unnecessary boundary line detection process to be detected is executed.

FIG. 9 is an enlarged explanatory view of a main part for showing the relationship between the first normal vector of the first surface and the second normal vector of the second surface at the midpoint of the boundary line of the molded product. FIG. 9B is an explanatory diagram when the first normal vector and the second normal vector are in the same direction, and FIG. 9B is an explanatory diagram when the first normal vector and the second normal vector are in different directions.
C106A: Midpoint Calculation Unit The midpoint calculation unit C106A calculates the midpoint P based on the coordinates of both ends of each boundary line L shown in FIG.
C106B: Normal line discriminating means As shown in FIG. 9A, the normal line discriminating means C106B uses the two surfaces connected by the boundary line L as a first surface FM1 and a second surface FM2, and uses the method of the first surface FM1. When the line vector is the first normal vector HV1 and the normal vector of the second surface FM2 is the second normal vector HV1, the first point at the midpoint P calculated by the normal line calculation means C104 is used. It is determined whether the normal vector HV1 and the second normal vector HV2 are in the same direction.

FIG. 10 is an enlarged explanatory view of a main part for showing the relationship between the u1 direction curvature and v1 direction curvature of the first surface and the u2 direction curvature and v2 direction curvature of the second surface at the midpoint of the boundary line of the molded product, FIG. 10A is an explanatory diagram when the u1 direction curvature and the v1 direction curvature are the same as the u2 direction curvature and the v2 direction curvature, and FIG. 10B shows the u1 direction curvature, the v1 direction curvature, the u2 direction curvature, and the v2 direction curvature. It is explanatory drawing in the case of a different value.
C106C: Curvature calculation means The curvature calculation means C106C calculates the curvatures (Ku1, Kv1, Ku2, Kv2) of the first surface FM1 and the second surface FM2. As shown in FIG. 10, the curvature calculation means C106C according to the first embodiment determines that the first normal vector HV1 and the second normal vector HV2 are in the same direction, as shown in FIG. U1 direction curvature Ku1 as an example of the u1 direction curvature of the grid line on the first surface FM1 and v1 direction curvature Kv1 as an example of the v1 direction curvature of the grid line. U2 direction curvature Ku2 as an example of u2 direction curvature of the grid line on the second surface FM2, and v2 direction curvature Kv2 as example of v2 direction curvature of the grid line as an example. Is calculated. In Example 1, the first curvatures Ku1 and Kv1 are configured by the u1 direction curvature Ku1 and the v1 direction curvature Kv1. The u2 direction curvature Ku2 and the v2 direction curvature Kv2 constitute second curvatures Ku2 and Kv2.

C106D: Curvature Discriminating Means Curvature discriminating means C106D includes, as shown in FIG. 10A, first curvatures Ku1, Kv1 of the first surface FM1 calculated by the curvature calculating means C106C and second curvatures of the second surface FM2. By determining whether Ku2 and Kv2 are the same value, the first curved state that is the curved state of the first surface FM1 at the boundary line L and the second surface FM2 at the boundary line L are determined. It is determined whether or not the second bending state, which is the second bending state, is the same. The curvature discriminating means C106D according to the first embodiment, when the u1 direction curvature Ku1 and the u2 direction curvature Ku2 are the same value and the v1 direction curvature Kv1 and the v2 direction curvature Kv2 are the same value, or When the u1 direction curvature Ku1 and the v2 direction curvature Kv2 are the same value and the u2 direction curvature Ku2 and the v1 direction curvature Kv1 are the same value, that is, Ku1 = Ku2 and Kv1 = Kv2, or When Ku1 = Kv2 and Ku2 = Kv1, it is determined that the curvatures Ku1, Kv1 of the first surface FM1 and the curvatures Ku2, Kv2 of the second surface FM2 are the same value. Therefore, the unnecessary boundary line detection means C106 of the first embodiment determines that the normal vectors HV1 and HV2 are in the same direction, and the first curvatures Ku1 and Kv1 of the first surface FM1 and the second When it is determined that the second curvatures Ku2 and Kv2 of the surface FM2 have the same value, the boundary line L divides the first surface FM1 and the second surface FM2 that are originally the same surface. It is determined that the boundary line L1 is unnecessary.

C106E: Unnecessary boundary line setting storage unit The unnecessary boundary line setting storage unit C106E sets and stores each of the boundary lines L determined to be the unnecessary boundary line L1 shown in FIG. 10A as the unnecessary boundary line L1. To do.
C106F: Necessary boundary line setting storage unit The necessary boundary line setting storage unit C106F is a necessary boundary line for each boundary line L that is not determined to be the unnecessary boundary line L1 shown in FIGS. 9B and 10B. It is set and stored as the necessary boundary line L2.
C106G: Unnecessary boundary line display means Unnecessary boundary line display means C106G colors all the unnecessary boundary lines L1 stored in the unnecessary boundary line setting storage means C106E and displays them on the molded product image 1.

C107: Pointed uneven portion detecting means The pointed uneven portion detecting means C107 includes a midpoint calculating means C107A, a point determining means C107B, a normal direction moving point calculating means C107C, an unevenness determining means C107D, and a pointed recess. Setting storage means C107E, pointed convexity setting storage means C107F, non-pointed unevenness setting storage means C107G, and pointed unevenness display means C107H, and the pointed unevenness detection button 4 is selected In this case, the cusp-shaped concavo-convex part detecting process for detecting the cusp-shaped concavo-convex part (E1 + E2) including the cusp-shaped concave part (E1) or the cusp-shaped convex part (E2), so-called sharp edge, is executed.

FIG. 11 is an enlarged cross-sectional explanatory view of a pointed concavo-convex part formed in a molded product, FIG. 11A is a cross-sectional view of a pointed concave part, and FIG. 11B is a cross-sectional view of a pointed convex part.
C107A: Midpoint Calculation Means The midpoint calculation means C107A calculates the midpoint P based on the coordinates of both ends of each boundary line L shown in FIG. 11, similarly to the midpoint calculation means C106A.
C107B: cusp discrimination means C107B is an angle formed by the first surface FM1 and the second surface FM2 connected by the boundary line L with respect to the boundary line L shown in FIG. It is determined whether or not the connection angles β and β ′ are less than a preset cusp-type determination value _βmax . In the cusp discrimination means C107B of the first embodiment, the first normal vector HV1 of the first surface FM1 at the midpoint P and the second surface FM2 in the same way as the first connection angle calculation means C105B2. The connection angles β and β ′ are calculated based on the angles γ and γ ′ formed with the second normal vector HV2. That is, β = | 360 ° − (90 ° × 2) −γ | = | 180 ° −γ |, β ′ = | 360 ° − (90 ° × 2) −γ ′ | = | 180 ° −γ ′ | Is calculated. In the first embodiment, for example, the cusp discrimination value β _max can be set to 60 ° in advance.

C107C: Normal direction movement point calculation means The normal direction movement point calculation means C107C calculates a normal direction movement point Q which is a point moved in the direction of the normal calculated from the normal line calculation point P. As shown in FIG. 11, the normal direction moving point calculation means C107C of the first embodiment calculates the normal direction moving point Q that has moved in the direction of the first normal vector HV1 at the midpoint P. In Example 1, the normal direction movement amount LH1, which is the distance between the midpoint P and the normal direction movement point Q, is set to a value sufficiently smaller than the thickness of each surface of the molded product. For example, it can be set to 0.1 [mm]. In the first embodiment, the normal direction moving point Q moved in the direction of the first normal vector HV1 at the midpoint P is calculated. However, the present invention is not limited to this. For example, the second normal vector It is also possible to calculate a normal direction moving point moved by the normal direction moving amount LH1 in the direction of HV2.

C107D: Concavity and convexity determination unit The concavity and convexity determination unit C107D determines whether the first surface FM1 and the second surface FM2 are connected to the boundary line L in a concave shape or a convex shape. As shown in FIG. 11A, when the normal direction moving point Q is a point inside the molded product, the unevenness determining means C107D of Example 1 has the first surface FM1 and the second surface FM2 When it is determined that they are connected in a concave shape and the normal direction moving point Q is a point in space as shown in FIG. 11B, the first surface FM1 and the second surface FM2 are convex. Determine that it is connected. Thus, the wedge-shaped uneven portion detection unit C107 of the first embodiment, the connecting angle beta, beta 'is determined that the wedge-shaped discriminant value beta less than _max, and wherein the first surface FM1 and the second surface FM2 is When it is determined that it is connected in a concave shape, it is determined that the pointed recess E1 is formed by the boundary line L, the first surface FM1, and the second surface FM2, and the connection angle When it is determined that β and β ′ are less than the cusp discrimination value β _max and it is determined that the first surface FM1 and the second surface FM2 are connected in a convex shape, the boundary line L and It is determined that the pointed convex portion E2 is formed by the first surface FM1 and the second surface FM2.

C107E: Pointed recess setting storage means The pointed recess setting storage means C107E includes the boundary line L, the first surface FM1, and the second surface FM2 that are determined to be the pointed recess E1 shown in FIG. 11A. Are set and stored as the pointed recess E1.
C107F: Pointed convexity setting storage means The pointed convexity setting storage means C107F is the boundary line L, the first surface FM1, and the first surface that are determined to be the pointed convexity E2 shown in FIG. 11B. Two surfaces FM2 are set and stored as the pointed convex portion E2.

C107G: Non-pointed uneven portion setting storage means The non-pointed uneven portion setting storage unit C107G includes the boundary line L that has not been determined to be the point-shaped concave portion E1 or the point-shaped convex portion E2, and the first surface. FM1 and the second surface FM2 are set and stored as non-pointed uneven portions that are not the pointed uneven portions E1 + E2.
C107H: Pointed uneven portion display means The pointed uneven portion display means C107H is stored in all the pointed recesses E1 stored in the pointed recess setting storage means C107E and in the pointed protrusion setting storage means C107F. All the pointed convex portions E2 are colored and displayed on the molded product image 1 in a color-coded state.
C108: Drafting Completion Discriminating Unit The drafting completion discriminating unit C108 discriminates whether or not the drafting of the molded product by the design support system S is finished. Whether the drawing support determination unit C108 of Example 1 ends the drawing of the molded product by the design support system S by determining whether or not the user has input to end the design support program AP1. Is determined.

(Description of control unit of license server LSV)
2 and 3, the computer main body H1 of the license server LSV includes the input / output interface, the ROM, the RAM, the CPU, the clock oscillator, etc., like the computer main body H1 of the client personal computer PC. And various functions can be realized by executing a program stored in the hard disk or ROM. The hard disk of the license server LSV stores the operating system OS and application programs such as a design support use authentication program AP1 ′ for transmitting use permission information of the design support system S to the client personal computer PC. Has been. Hereinafter, each function (control means) of the design support use authentication program AP1 ′ will be described.

(Design support use certification program AP1 ')
The design support use authentication program AP1 ′ includes a registration application information receiving means C1 ′ for receiving the registration application information from the client personal computer PC, a use permission information transmitting means C2 ′ for transmitting the use permission information, and the registration. Registration application information storage means C3 ′ for storing application information. The license server LSV according to the first embodiment transmits and receives information to and from the client personal computer PC, and transfers the use permission information based on the registration application information, thereby using the design support system S. Is licensed.

(Description of Flowchart of Example 1)
Next, the processing flow of the design support program AP2 for the client PC according to the first embodiment will be described using a flowchart. Regarding the processing corresponding to the design support use authentication program AP1 ′ of the client personal computer PC and the license server LSV, the client personal computer PC transmits the registration application information and receives and stores the use permission information. Since the license server LSV only transmits and stores the registration application information and receives the use permission information, detailed description of the flowchart is omitted.

(Description of Flowchart of Main Processing of Design Support Program AP2 of Embodiment 1)
FIG. 12 is a flowchart of the main process of the design support program according to the first embodiment of the present invention.
The processing of each ST (step) in the flowchart of FIG. 12 is performed according to a program stored in the ROM or the like of the control unit. Further, this process is executed in a multitasking manner in parallel with other various processes of the control unit, for example, a drawing process of a molded product.

The flowchart shown in FIG. 12 is started when the design support program AP1 is started after the client personal computer PC is turned on.
In ST1 of FIG. 12, it is determined whether or not the user inputs the cavity direction KH1, the core direction KH2, the u-direction interval Lv, the v-direction interval Lu of the grid lines, and the like, thereby drawing the molded product by the design support system S. It is determined whether or not to start. If yes (Y), the process proceeds to ST2, and if no (N), ST1 is repeated.
In ST2, a license processing for determining whether or not the client personal computer PC has a proper license for the design support system S is executed based on the license information stored in the license information storage means C3. Then, the process proceeds to ST3.
In ST3, as shown in FIG. 5, a molded product image display process for displaying a molded product image 1 in which molded product information, which is information on the three-dimensional shape of the molded product stored in the molded product information storage means C103A, is imaged. Execute. Then, the process proceeds to ST4.

In ST4, it is determined whether or not the unmoldable part detection button 2 of the molded product image 1 is selected. If yes (Y), the process proceeds to ST5, and, if no (N), the process proceeds to ST6.
In ST5, a non-moldable part detection process for detecting the non-moldable parts M1 to M3 shown in the flowchart of FIG. Then, the process returns to ST4.
In ST6, it is determined whether or not the unnecessary boundary detection button 3 of the molded product image 1 is selected. If yes (Y), the process proceeds to ST7, and, if no (N), the process proceeds to ST8.
In ST7, an unnecessary boundary detection process for detecting the unnecessary boundary L1 shown in the flowchart of FIG. Then, the process returns to ST4.
In ST8, it is determined whether or not the pointed uneven portion detection button 4 of the molded product image 1 is selected. If yes (Y), the process proceeds to ST9, and, if no (N), the process proceeds to ST10.

In ST9, a pointed uneven portion detecting process for detecting the pointed uneven portion E1 + E2 including the pointed recessed portion E1 or the pointed protruding portion E2 shown in the flowchart of FIG. Then, the process returns to ST4.
In ST10, it is determined whether or not the drawing of the molded product by the design support system S is ended by determining whether or not the user inputs to end the design support program AP1. If yes (Y), the process proceeds to ST11, and, if no (N), the process returns to ST4.
In ST11, the molded product image 1 is hidden. Then, the process returns to ST1.

(Explanation of Flowchart of Unmoldable Portion Detection Processing of Design Support Program AP2 of Embodiment 1)
FIG. 13 is a flowchart of the unmoldable portion detection process, and is an explanatory diagram of the subroutine of ST5 in FIG.
In ST101 of FIG. 13, the surface information of all the surfaces of the molded product image 1 stored in the surface information storage means C103A1 is acquired. Then, the process proceeds to ST102.
In ST102, a first unmoldable portion detection process for detecting the cavity-side unmoldable portions M1 to M3, which cannot be formed simply by moving the female die in the cavity direction KH1, shown in the flowchart of FIG. Then, the process proceeds to ST103.
In ST103, a second non-moldable part detection process is performed for detecting core-side unmoldable parts M1 to M3 that cannot be molded simply by moving the male mold in the core direction KH2. Then, the process proceeds to ST104.

In ST104, the cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3 shown in the flowchart of FIG. 15 described later are unmoldable portions M8 that cannot be molded even when moved in the standard slide direction KH3. A third formable part detection process is performed to determine whether the third formable part M6 or M7 can be formed by moving the slide core in the standard slide direction KH3. Then, the process proceeds to ST105.
In ST105, the following processes (1) to (3) are executed, the unmoldable part detection process is terminated, and the process returns to the main process in FIG.
(1) All the unmoldable parts M8 stored in the unmoldable part setting storage means C105E are displayed in red on the molded product image 1.
(2) All the third moldable parts M6, M7 stored in the third moldable part setting storage means C105F are displayed in yellow on the molded product image 1 and displayed.

(Explanation of the flowchart of the 1st unmoldable part detection processing of design support program AP2 of Example 1)
FIG. 14 is a flowchart of the first unmoldable portion detection process, and is an explanatory diagram of a subroutine of ST102 of FIG.
In the description of the second unmoldable part detection process, “′” is given to the ST number of each step of the first unmoldable part detection process, and “first”, “female”, “cavity”, By replacing “KH1”, “KL1”, and “+ Z direction” with “second”, “male”, “core”, “KH2”, “KL2”, and “−Z direction”, respectively, Since it is the same as the description of the unmoldable portion detection process, a detailed description by illustration is omitted.
In ST111 of FIG. 14, surface information of unselected surfaces among all surfaces is selected. Then, the process proceeds to ST112.
In ST112, based on the grid direction u-direction interval Lu and the v-direction interval Lv,
The normal vectors h1 to h16 of all grid intersections p1 to p16 shown in FIG. 4 are calculated. Then, the process proceeds to ST113.

In ST113, it is determined whether or not normal vectors h1 to h16 having a cavity reverse direction component in the cavity direction KH1 exist. If yes (Y), the process proceeds to ST114, and, if no (N), the process proceeds to ST115.
In ST114, the selected surface is set and stored as a cavity-side unmoldable part (M1). Then, the process proceeds to ST115.
In ST115, it is determined whether or not all the surfaces have been selected. If yes (Y), the process proceeds to ST116, and, if no (N), the process returns to ST111.
In ST116, the surface information of the unset surface among the surfaces not set as the cavity-side unmoldable part (M1) is selected. Then, the process proceeds to ST117.

In ST117, it is determined whether or not the surface adjacent to the selected surface is the cavity-side unmoldable surface M1. That is, it is determined whether or not the selected surface is the cavity side adjacent surface M2. If yes (Y), the process proceeds to ST118, and, if no (N), the process proceeds to ST119.
In ST 118, shown in FIG. 6, it is determined whether or not the connection angle alpha, alpha 'concave connection than the determination value alpha _max that is set in advance between the cavity side unmoldable surface M1 and the cavity-side adjacent surface M2. That is, by determining whether or not α <α _max and α ′ <α _max, it is determined whether or not the cavity side adjacent surfaces M2 and M2 ′ are the cavity side concave connection surface M2. If no (N), the process moves to ST119, and if yes (Y), the process moves to ST123.
In ST119, it is determined whether or not the selected surface shown in FIG. 7, that is, the surface M4 reaching the cavity-side straight line KL1 extending from the cavity-side projection surfaces M3 and M3 ′, that is, the + Z-direction straight line is reached. . If no (N), the process moves to ST120, and if yes (Y), the process moves to ST123.

In ST120, the selected surface is set and stored as the moldable part M3 ′. Then, the process proceeds to ST121.
In ST121, it is determined whether or not there is a standing wall M5 that is a surface adjacent to the selected surface (M3 ′) and parallel to the cavity direction straight line KL1. If yes (Y), the process proceeds to ST122, and, if no (N), the process proceeds to ST124.
In ST122, all the standing walls M5 adjacent to the selected surface (M3 ′) are set and stored as the moldable part M5. Then, the process proceeds to ST124.
In ST123, the selected surface is set and stored as the unmoldable portions M2 and M3. Then, the process proceeds to ST124.
In ST124, it is determined whether or not there is a surface other than the unset cavity side unmoldable surface portions M1 to M3. If yes (Y), the process returns to ST116, and if no (N), the first unmoldable part detection process ends, and the process returns to the unmoldable part detection process of FIG.

(Description of Flowchart of Third Formable Part Detection Process of Design Support Program AP2 of Example 1)
FIG. 15 is a flowchart of the third moldable portion detection process, and is an explanatory diagram of a subroutine of ST104 in FIG.
In ST131 of FIG. 15, the surface information of the unselected surface among all the cavity side unmoldable portions M1 to M3 stored in the first unmoldable portion setting storage unit C105D is selected. Then, the process proceeds to ST132.
In ST132, it is determined whether or not there is a surface M4 reaching the core direction straight line KL2 extending from the selected surface, that is, a straight line in the −Z direction. If no (N), the process moves to ST133, and if yes (Y), the process moves to ST134.
In ST133, the selected surface is set and stored as the moldable portion M3 ′. Then, the process proceeds to ST137.

In ST134, it is determined whether or not there is a standard slide direction straight line KL3 extending from the selected surface shown in FIG. If no (N), the process proceeds to ST135, and if yes (Y), the process proceeds to ST136.
In ST135, the selected surface is set and stored as third moldable portions M6 and M7. Then, the process proceeds to ST137.
In ST136, the selected surface is set and stored as unmoldable portions M1 to M3. Then, the process proceeds to ST137.
In ST137, it is determined whether or not all the cavity side unmoldable parts M1 to M3 have been selected. If yes (Y), the process proceeds to ST138, and, if no (N), the process returns to ST131.

In ST138, the surface information on the unselected surface of all the core-side unmoldable parts M1 to M3 stored in the second unmoldable part setting storage unit C105D ′ is selected. Then, the process proceeds to ST139.
In ST139, it is determined whether or not there is a surface M4 reaching the cavity direction straight line KL1 extending from the selected surface, that is, the + Z direction straight line. If no (N), the process moves on to ST140, and if yes (Y), the process moves on to ST141.
In ST140, the selected surface is set and stored as the moldable part M3 ′. Then, the process proceeds to ST144.
In ST141, it is determined whether or not a standard slide direction straight line KL3 extending from the selected surface shown in FIG. If no (N), the process moves to ST142, and if yes (Y), the process moves to ST143.

In ST142, the selected surface is set and stored as the third moldable part M6, M7. Then, the process proceeds to ST144.
In ST143, the selected surface is set and stored as unmoldable portions M1 to M3. Then, the process proceeds to ST144.
In ST144, it is determined whether or not all the core-side unmoldable portions M1 to M3 have been selected. If no (N), the process returns to ST138, and if yes (Y), the third moldable part detection process ends, and the process returns to the unmoldable part detection process of FIG.

(Description of Flowchart of Unnecessary Boundary Line Detection Processing of Design Support Program AP2 of Embodiment 1)
FIG. 16 is a flowchart of the unnecessary boundary line detection process, and is an explanatory diagram of the subroutine of ST7 in FIG.
In ST201 of FIG. 16, the boundary line information of all boundary lines L of the molded product image 1 stored in the boundary line information storage unit C103A2 is acquired. Then, the process proceeds to ST202.
In ST202, the boundary line information of the unselected boundary line L among all the boundary lines L is selected. Then, the process proceeds to ST203.
In ST203, each surface information of the first surface FM1 and the second surface FM2 connected to the selected boundary line L is acquired. Then, the process proceeds to ST204.

In ST204, the following processes (1) and (2) are executed, and the process moves to ST205.
(1) The first normal vector HV1 of the first surface FM1 at the midpoint P of the selected boundary line L is calculated.
(2) The second normal vector HV2 of the second surface FM2 at the midpoint P of the selected boundary line L is calculated.
In ST205, it is determined whether or not the first normal vector HV1 and the second normal vector HV2 are in the same direction. If yes (Y), the process proceeds to ST206, and, if no (N), the process proceeds to ST210.
In ST206, the following processes (1) and (2) are executed, and the process proceeds to ST207.
(1) The u1 direction curvature Ku1 and the v1 direction curvature Kv1 of the first surface FM1 at the midpoint P of the selected boundary line L are calculated.
(2) The u2 direction curvature Ku2 and the v2 direction curvature Kv2 of the second surface FM2 at the midpoint P of the selected boundary line L are calculated.

In ST207, it is determined whether or not the u1 direction curvature Ku1 and the u2 direction curvature Ku2 are the same value, and the v1 direction curvature Kv1 and the v2 direction curvature Kv2 are the same value. That is, it is determined whether Ku1 = Ku2 and Kv1 = Kv2. If no (N), the process moves on to ST208, and if yes (Y), the process moves on to ST209.
In ST208, it is determined whether or not the u1 direction curvature Ku1 and the v2 direction curvature Kv2 are the same value, and the u2 direction curvature Ku2 and the v1 direction curvature Kv1 are the same value. That is, it is determined whether Ku1 = Kv2 and Ku2 = Kv1. If yes (Y), the process proceeds to ST209, and, if no (N), the process proceeds to ST210.

In ST209, the selected boundary line L is set and stored as an unnecessary boundary line L1. Then, the process proceeds to ST211.
In ST210, the selected boundary line L is set and stored as the necessary boundary line L2. Then, the process proceeds to ST211.
In ST211, it is determined whether or not all the boundary lines L have been selected. If yes (Y), the process proceeds to ST212, and, if no (N), the process returns to ST202.
In ST212, all unnecessary boundary lines L1 stored are colored and displayed. Then, the unnecessary boundary detection processing is finished and the processing returns to the main processing in FIG.

(Explanation of the flowchart of the pointed irregularity detection process of the design support program AP2 of the first embodiment)
FIG. 17 is a flowchart of the pointed uneven portion detection process, and is an explanatory diagram of the subroutine of ST9 in FIG.
In ST301 of FIG. 17, the boundary line information of all the boundary lines L of the molded product image 1 stored in the boundary line information storage unit C103A2 is acquired. Then, the process proceeds to ST302.
In ST302, the boundary information of the unselected boundary line L among all the boundary lines L is selected. Then, the process proceeds to ST303.
In ST303, each surface information of the first surface FM1 and the second surface FM2 connected to the selected boundary line L is acquired. Then, the process proceeds to ST304.

In ST304, the following processes (1) and (2) are executed, and the process proceeds to ST305.
(1) The first normal vector HV1 of the first surface FM1 at the midpoint P of the selected boundary line L is calculated.
(2) The second normal vector HV2 of the second surface FM2 at the midpoint P of the selected boundary line L is calculated.
In ST305, it is determined whether or not the connection angles β, β ′ formed by the first surface FM1 and the second surface FM2 are less than the cusp-type determination value _βmax . That is, it is determined whether or not β <β _max and β ′ <β _max . In ST305, based on the angles γ and γ ′ formed by the first normal vector HV1 of the first surface FM1 at the midpoint P and the second normal vector HV2 of the second surface FM2, the connection angle is determined. β and β ′ are calculated. That is, β = | 360 ° − (90 ° × 2) −γ | = | 180 ° −γ |, β ′ = | 360 ° − (90 ° × 2) −γ ′ | = | 180 ° −γ ′ | Is calculated. If no (N), the process moves to ST306, and, if yes (Y), the process returns to ST307.
In ST306, the selected boundary line L, first surface FM1, and second surface FM2 are set and stored as non-pointed uneven portions. Then, the process proceeds to ST311.

In ST307, a normal direction moving point Q moved from the middle point P by the normal direction moving amount LH1 in the direction of the first normal vector HV1 is calculated. Then, the process proceeds to ST308.
In ST308, it is determined whether or not the normal direction movement point Q is a point inside the molded product. That is, it is determined whether or not the normal direction moving point Q is a point on the space. If yes (Y), the process proceeds to ST309, and, if no (N), the process proceeds to ST310.
In ST309, the selected boundary line L, first surface FM1, and second surface FM2 are set and stored as a pointed recess E1. Then, the process proceeds to ST311.
In ST310, the selected boundary line L, first surface FM1, and second surface FM2 are set and stored as a pointed convex portion E2. Then, the process proceeds to ST311.
In ST311, it is determined whether or not all the boundary lines L have been selected. If yes (Y), the process transfers to ST312, and, if no (N), the process returns to ST302.
In ST312, all the cusp-shaped recesses E1 stored in the cusp-shaped recess setting storage unit C107E and all the cusp-shaped projections E2 stored in the cusp-shaped projection setting storage unit C107F are used as the molded product. Colored and displayed on the image 1 in a color-coded state. Then, the pointed concavo-convex portion detection process is terminated and the process returns to the main process of FIG.

(Operation of Example 1)
FIG. 18 is an operation explanatory view of the first embodiment, and is an enlarged explanatory view of an example of an unmoldable portion detected by the unmoldable portion detection process. FIG. 18A is detected as a cavity-side unmoldable surface and a cavity-side adjacent surface. 18B is an enlarged explanatory view of the boss viewed from the XVIIB direction of FIG. 15A, and FIG. 18C is an example of each part of the molded product detected as the cavity-side projection surface. It is explanatory drawing of an example of each part of the molded article which is not detected as a cavity side projection surface.
In the design support system S of the first embodiment having the above-described configuration, when the unmoldable portion detection button 2 of the molded product image 1 shown in FIG. 5 is selected, ST5 in FIG. 12 and ST101 to ST105 in FIG. The unmoldable portion detection process shown in FIG.
In the unmoldable part detection process of Example 1, the first unmoldable part detection process shown in ST131 to ST124 of FIG. 14 and the second unmoldable part detection process similar to the first unmoldable part detection process Is executed.

(Regarding the in-plane undercut process of the first unmoldable part detection process)
In the first non-moldable part detection process of the non-moldable part detection process, first, similarly to Patent Document 1, the cavity-side non-moldable part M1 is detected based on the cavity direction KH1 and the normal vectors h1 to h16. A so-called in-plane undercut process is performed. That is, in ST113 of FIG. 14, the in-plane in which the cavity-side unmoldable surface M1 in which normal vectors h1 to h16 having a cavity reverse direction component in the cavity direction KH1 exist is detected as the cavity-side unmoldable part M1. Undercut processing is executed.
For example, as shown in FIGS. 18A and 18B, with respect to the through hole penetrating the surface of the molded product in the molded product image 1, the normal vector of the upper portion of the through surface 1a inside the through hole is the upper direction of the cavity direction KH1. It has a cavity reverse direction component. Further, with respect to the boss as an example of the protruding portion protruding from the surface of the molded product, the normal vector of the bottom surface of the cylindrical surface 1b and the normal vector of the bottom portion of the chamfered portion 1c are the opposite directions of the cavity. However, the normal vectors of the planar tip surface 1d of the boss are all perpendicular to the cavity direction KH1 and do not have the cavity reverse direction component. In this case, the through surface 1a, the cylindrical surface 1b, and the chamfered portion 1c are detected as the cavity-side unmoldable portion M1 by the in-plane undercut processing.

(Regarding the concave edge process of the first unmoldable part detection process)
Further, in the first non-moldable part detection process of the non-moldable part detection process, a new cavity-side non-moldable part M2 based on the connection angles α and α ′ with the already detected cavity-side non-moldable parts M1 to M3. , So-called concave edge processing is executed. That is, in ST117 and ST118 of FIG. 14, the concave shape discrimination in which the connection angles α and α ′ between the cavity-side unmoldable portions M1 to M3 and the cavity-side adjacent surfaces M2 and M2 ′ shown in FIG. by determining whether or not less than the value alpha _max, the cavity-side concave connection surface M2, which is connected to the concave and the cavity-side unmoldable portion M1~M3 is detected as a new cavity-side unmoldable portion M2 The concave edge processing is executed.

  For example, the protrusion support surface 1e that supports the bosses 1b to 1d shown in FIG. 18A is detected as the cavity-side concave connection surface M2 that is concavely connected to the cylindrical surface 1b. In addition, as for the said protrusion part support surface 1e, the downward part of the said boss | hubs 1b-1d of the said cavity direction KH1 upstream becomes the cavity side unmoldable part M1 in fact. Further, the pocket-shaped concave groove 1f has an upper end surface 1f1 detected as the cavity-side unmoldable surface M1, and the other surfaces 1f2 to 1f5 are reverse to the cavity direction KH1 in the in-plane undercut process. Therefore, the cavity side non-moldable surface M1 is not detected as the cavity side non-moldable surface M1. However, in Example 1, the concave edge process detects the left side surface 1f2, the right side surface 1f3, and the bottom surface 1f4 connected to the upper end surface 1f1 in a concave shape as the cavity side concave connection surface M2, and the lower end surface 1f5. Is detected as the cavity-side concave connection surface M2 of each of the surfaces 1f2 to 1f4.

(About the projection point process of the 1st unmoldable part detection process)
In the first non-moldable part detection process of the non-moldable part detection process, a new cavity-side non-moldable part M3 is detected based on the cavity direction straight line KL1 extending from the cavity-side projection surfaces M3 and M3 ′. In other words, so-called projection point processing is executed. That is, in ST119 of FIG. 14, by determining whether or not there is a surface M4 that the cavity direction straight line KL1 reaches from the cavity-side projection surfaces M3 and M3 ′ shown in FIG. The projection point process is executed in which the existing cavity-side projection surface M3 is detected as a new cavity-side non-moldable part M3.
As a result, for example, the upper surface 1h1 of the first projecting portion 1h projecting upward from the bottom surface (1j) of the molded article disposed below the steric hindrance portion 1g as an example of the surface M4 shown in FIG. Since the cavity direction straight line KL1 extending from the upper surface 1h1 reaches the three-dimensional obstacle 1g, it is detected as the cavity-side unmoldable part M3.

(About the standing wall process of the first unmoldable part detection process)
In the first unmoldable portion detection process of the unmoldable portion detection process, a surface (M5) adjacent to the cavity-side projection surface M3 ′ is based on the cavity-side projection surface M3 ′ where the surface M4 does not exist. A so-called standing wall process for determining whether or not the surface is the moldable surface M5 is performed. That is, in ST121 of FIG. 14, the standing wall M5 shown in FIG. 7B adjacent to the cavity-side projection surface M3 ′ and parallel to the cavity direction straight line KL1 is determined to be the moldable surface M5. Wall processing is executed.
As a result, for example, as shown in FIG. 18C, with respect to the second protrusion 1i protruding upward from the bottom surface (1j) of the molded product, the upper surface 1i1 of the second protrusion 1i There is no steric hindrance to the above, and it is detected as the moldable part M3 ′ that is not undercut. Further, since the side surfaces 1i2 to 1i5 are parallel to the cavity direction straight line KL1, the side surfaces are identified as the standing wall M5 and detected as the moldable portion M5.

(About the second unmoldable part detection process)
Further, in the unmoldable portion detection process, the in-plane undercut process, the concave edge process, the projection point in the second unmoldable portion detection process also in the core direction KH2, as in the cavity direction KH1. The process and the standing wall process are executed, and the core-side unmoldable parts M1 to M3 and the moldable parts M3 ′ and M5 are detected.
In the unmoldable portion detection process, the third molding shown in FIG. 8 is performed from the cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3 detected in ST131 to ST144 in FIG. The third moldable part detection process for detecting the possible parts M6 and M7 is executed.

  That is, when the cavity-side unmoldable portions M1 to M3 can be molded by moving the male mold in the core direction KH2, as shown in ST132 and ST133 of FIG. 15, the core-side projection surface M3 ′ Is detected as the moldable portion M3 ′, and it is determined that the molding is possible by the male mold. Also, as shown in ST132, ST134, ST135 of FIG. 15, when the male mold cannot be molded even if it is moved in the core direction KH2, and it can be molded if the slide core is moved in the standard slide direction KH3. Are detected as the third moldable portions M6 and M7, and are determined to be moldable by the slide core. Furthermore, as shown in ST132, ST134, ST136 of FIG. 15, when the male mold cannot be molded even if it is moved in the core direction KH2, and when the slide core is moved in the standard slide direction KH3, it cannot be molded. Is detected as the unmoldable portion M8, and it is determined that the female mold, the male mold, and the slide core cannot be molded.

FIG. 19 is an explanatory diagram of the slide core of Example 1, and is an explanatory diagram of the slide core corresponding to the model in the case where the protrusion is removed from the model of the molded product shown in FIG.
For example, as shown in FIG. 19, a model MD ′ obtained by removing the protrusions MDa, MDa, MDb from the model MD of the molded product shown in FIG. 8 is a female mold K1 that moves in the + Z direction as the cavity direction KH1. Other than the respective surfaces M6 and M7 detected as the cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3 by the male mold K2 moved in the + Z direction as the core direction KH2. Each surface can be molded. The surface M6 is determined to be moldable by the first slide core K3 that is moved in the ± X direction as an example of the standard slide direction KH3, and is detected as the third moldable part. The surface M7 is determined to be moldable by the second slide core K4 that is moved in the ± Y direction as an example of the standard slide direction KH3, and is detected as the third moldable part.

As a result, each of the surfaces 1a to 1c, 1e, and 1f shown in FIG. 17A has a slide core having a shape corresponding to each of the surfaces 1a to 1c, 1e, and 1f, and the −Y direction as an example of the standard slide direction KH3. Therefore, it is detected as the third moldable part M6, M7.
Further, for example, the bottom surface 1j from which the protrusions 1h and 1i shown in FIG. 18C protrude is detected as the cavity-side unmoldable portions M1 to M3 and the core-side unmoldable portions M1 to M3, and the bottom surface Even if the slide core having a shape corresponding to 1j is moved in the ± X direction and the ± Y direction, which are the standard slide directions KH3, the projections 1h and 1i are present, so that the molding cannot be performed. For this reason, the bottom surface 1j is detected as the unmoldable portion M8.

  Also, the core-side unmoldable portions M1 to M3 can be moved in the cavity direction KH1 as shown in ST139 and ST140 of FIG. 15 in the same manner as the cavity-side unmoldable portions M1 to M3. If molding is possible, it is detected as the cavity-side projection surface M3 ′, detected as the moldable portion M3 ′, and determined to be moldable by the female mold. Further, as shown in ST139, ST141, ST142 of FIG. 15, when the female mold cannot be molded even if it is moved in the cavity direction KH1, and it can be molded if the slide core is moved in the standard slide direction KH3. Are detected as the third moldable portions M6 and M7, and are determined to be moldable by the slide core. Furthermore, as shown in ST139, ST141, ST143 of FIG. 15, when the female mold cannot be molded even if it is moved in the cavity direction KH1, and when the slide core is moved in the standard slide direction KH3, it cannot be molded. Is detected as the unmoldable portion M8, and it is determined that the female mold, the male mold, and the slide core cannot be molded.

Therefore, in the design support system S of the first embodiment, the presence / absence of the unmoldable parts M1 to M3 is automatically and accurately determined by the unmoldable part detection process, and the unmoldable part M8 can be detected without skilled knowledge. There is no molded product and the design of the mold becomes easy.
In the design support system S of Example 1, in the molded product image 1, the third moldable portions M6 and M7 are displayed in yellow and the unmoldable portion M8 is colored in red. Displayed. Therefore, when the moldable part (M1 to M3), the third moldable part M6, M7, and the non-moldable part M8 can be distinguished on the molded product image 1 and are not displayed in different colors. In comparison, the molded product without the unmoldable part M8 and the design of the mold are facilitated.

Further, in the design support system S of the first embodiment, when the unnecessary boundary line detection button 3 of the molded product image 1 shown in FIG. 5 is selected, the above-described ST7 of FIG. 12 and ST201 to ST212 of FIG. Unnecessary boundary detection processing is executed.
In the unnecessary boundary line detection process of the first embodiment, in ST205 of FIG. 16, the normal vectors HV1, HV2 of the first surface FM1 and the second surface FM2 connected by the boundary line L shown in FIG. Are the same direction, and in ST207 and ST208 of FIG. 16, the first curvatures Ku1 and Kv1 of the first surface FM1 and the second curvatures Ku2 and Kv2 of the second surface FM2 shown in FIG. Are determined to be the same value, the boundary line L is determined to be the unnecessary boundary line L1 that divides the first surface FM1 and the second surface FM2 that are originally the same surface. .
Therefore, in the design support system S of the first embodiment, the unnecessary boundary line L1 is automatically detected with high accuracy by the unnecessary boundary line detection process, and the design of the mold is facilitated without skilled knowledge.

Further, in the design support system S of Example 1, when the pointed uneven portion detection button 4 of the molded product image 1 shown in FIG. 5 is selected, ST9 of FIG. 12 and ST301 to ST312 of FIG. The pointed uneven portion detection process is executed.
In the pointed concavo-convex portion detection process of the first embodiment, in ST305 of FIG. The boundary line L is determined by determining whether or not the connection angles β and β ′ between the first surface FM1 and the second surface FM2 are less than a predetermined cusp discrimination value _βmax. Then, it is determined whether or not the first surface FM1 and the second surface FM2 are the pointed uneven portions E1 + E2.

  Further, when it is determined that the boundary line L and the first surface FM1 and the second surface FM2 are the pointed uneven portions E1 + E2, in ST307 and ST308 of FIG. 17, the boundary line L It is determined whether the normal direction moving point Q moved by the normal direction moving amount LH1 in the direction of the first normal vector HV1 from the middle point P is a point inside the molded product or a point in space. . As a result, when the normal direction movement point Q is determined to be a point inside the molded product, the boundary line L, the first surface FM1, and the second surface FM2 are the pointed recesses E1. When the normal direction moving point Q is determined to be a point in space, the boundary line L, the first surface FM1, and the second surface FM2 are the pointed convex portions E2. It is determined that there is.

  Therefore, in the design support system S according to the first embodiment, the pointed concave and convex portion E1 in which the strength of the mold is problematic because the point is sharpened and the molded product is pointed by the pointed uneven portion detection process. The cusp-shaped convex part E2, which is dangerous for the user, is difficult to process the concave mold, and the cost for producing the mold is a problem, is automatically detected with high accuracy, and even without skilled knowledge The mold can be easily designed.

FIG. 20 is a functional block diagram illustrating the functions of the control unit of the client personal computer and the license server according to the second embodiment, and corresponds to FIG. 2 according to the first embodiment.
FIG. 21 is a functional block diagram continued from FIG. 20 and corresponds to FIG. 3 of the first embodiment.
FIG. 22 is an enlarged explanatory view of a conical surface as an example of a rotating surface.
Next, the design support system S of the second embodiment of the present invention will be described. In the description of the second embodiment, components corresponding to the components of the first embodiment are denoted by the same reference numerals, Detailed description is omitted. The second embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.

(Description of Control Unit of Example 2)
(Design support program AP2)
20 and 21, in the surface information storage means C103A1 according to the second embodiment of the present invention, as shown in FIG. 22, the surface is a solid obtained by rotating the central axis, so-called curved surface of a rotating body. In the case of the rotating surface M0, it is stored that the surface is the rotating surface M0. In the second embodiment, when the drawing is performed by the input for drawing the rotation surface at the time of drawing, the surface drawn by the input is stored as the rotation surface M0.
Further, the first unmoldable part determining means C105A of Example 2 includes a rotating surface determining means C105A3, a first central axis parallel determining means C105A4, and a first cross-section outer diameter determining means C105A5.

C105A3: Rotating surface discriminating unit The rotating surface discriminating unit C105A3 discriminates whether or not the surface is the rotating surface M0 based on the surface information storage unit C103A1.
C105A4: First central axis parallel determination means The first central axis parallel determination means C105A4 determines whether the central axis direction PH of the rotation surface M0 and the cavity direction KH1 are parallel, as shown in FIG. To do.

C105A5: First cross-section outer diameter discriminating means As shown in FIG. 22, the first cross-section outer diameter discriminating means C105A5 is arranged in the cavity direction with respect to the outer diameters R1 and R2 as the diameters of the circles in the vertical cross section with respect to the central axis direction PH. The cavity upstream side outer diameter R1 as an example of the first upstream side outer diameter that is the outer diameter of the KH1 upstream side is the cavity downstream side as an example of the first downstream side outer diameter that is the outer diameter of the downstream side in the cavity direction KH1. It is determined whether or not the outer diameter is R2 or more. Therefore, in the first unmoldable part discriminating means C105A of the second embodiment, the rotational surface M0 is parallel to the central axis direction PH and the cavity direction KH1, and the upstream of the cavity in the entire central axis direction PH. When it is determined that the side outer diameter R1 is greater than or equal to the cavity downstream outer diameter R2, it is determined that the rotation surface M0 is not the cavity-side unmoldable portion M1. Further, when the rotation surface M0 is not parallel to the central axis direction PH and the cavity direction KH1, or the rotation surface M0 is parallel to the central axis direction PH and the cavity direction KH1, the central axis direction When the cavity upstream-side outer diameter R1 includes a region smaller than the cavity downstream-side outer diameter R2 in the entire PH region, the rotational surface M0 is determined to be the cavity-side unmoldable portion M1.

  Further, the second unmoldable portion determining means C105A ′ of the second embodiment includes a rotating surface determining means C105A3 ′, a second central axis parallel determining means C105A4 ′, and a second cross-section outer diameter determining means C105A5 ′. Here, the explanation of the rotating surface discriminating means C105A3 ', the second central axis parallel discriminating means C105A4', and the second cross-sectional outer diameter discriminating means C105A5 'is "" "in each means C105A3, C105A4, C105A5. And “first”, “cavity”, and “KH1” are read as “second”, “core”, and “KH2”, respectively, to thereby determine the rotation surface discriminating means C105A3 and the first central axis. Since the description is the same as the parallel discriminating means C105A4 and the first cross-sectional outer diameter discriminating means C105A5, the detailed explanation is omitted.

(Description of the flowchart of the 1st unmoldable part detection process of Example 2)
FIG. 23 is a flowchart of the first unmoldable portion detection process of the second embodiment, which is an explanatory diagram of a subroutine of ST5 of FIG.
23, in the flowchart of the design support program AP2 for the client personal computer PC of the second embodiment, ST151 to ST153 are executed between ST111 and ST112 with respect to the flowchart of the main process of the first embodiment of FIG. However, ST113 to ST124, which are other processes, are the same as the corresponding processes in FIG. 14, and thus detailed description of the other processes is omitted.

In ST151 in FIG. 23, it is determined whether or not the selected surface is the rotation surface M0. If yes (Y), the process proceeds to ST152, and, if no (N), the process proceeds to ST112.
In ST152, it is determined whether or not the central axis direction PH of the rotation surface M0 and the cavity direction KH1 shown in FIG. 22 are parallel to each other. If yes (Y), the process proceeds to ST153, and, if no (N), the process proceeds to ST114.
In ST153, it is determined whether or not the upstream outer diameter R1 is equal to or larger than the downstream outer diameter R2 over the entire area of the rotation surface M0 in the central axis direction PH. If no (N), the process moves to ST114, and, if yes (Y), the process moves to ST115.

  In the description of the second unmoldable part detection process of the second embodiment, “′” is given to the ST number of each step of the first unmoldable part detection process, and “first”, “female”, “ By replacing “cavity”, “KH1”, “KL1”, and “+ Z direction” with “second”, “male”, “core”, “KH2”, “KL2”, and “−Z direction”, respectively. Since it becomes the same as the description about the said 1st unmoldable part detection process, detailed description by illustration is abbreviate | omitted.

(Operation of Example 2)
FIG. 24 is an operation explanatory view of the second embodiment, and is an enlarged explanatory view of an example of the unmoldable surface detected by the unmoldable portion detection process of the second embodiment. FIG. 24A is a truncated cone surface as an example of the unmoldable surface. 24B is a cross-sectional view of a cylindrical surface as an example of a non-moldable surface, and FIG. 24C is a cross-sectional view of a curved surface B as an example of a non-moldable surface.
In the design support system S according to the second embodiment having the above-described configuration, the rotation surface M0 shown in FIG. 22 is shown in ST151 to ST153 in FIG. Is determined to determine whether or not is the cavity-side unmoldable surface M1. That is, the rotation surface M0 is parallel to the central axis direction PH and the cavity direction KH1, and the cavity upstream outer diameter R1 is greater than or equal to the cavity downstream outer diameter R2 over the entire central axis direction PH. If it is not determined, the rotation surface M0 is detected as the cavity-side non-moldable surface M1.

  As a result, for example, as shown in FIG. 24A, the truncated cone surface 1k1 as an example of the rotation surface M0 that constitutes the side surface 1k1 of the inverted frustoconical third projection 1k has the central axis direction PH and the cavity direction KH1. However, since the cavity upstream outer diameter R1 is equal to or smaller than the cavity downstream outer diameter R2, the cavity side non-moldable surface M1 is detected. 24B, the cylindrical surface 1m1 as an example of the rotating surface M0 constituting the side surface 1m1 of the cylindrical fourth protrusion 1m includes the cavity upstream outer diameter R1 and the cavity downstream outer diameter R2. However, since the central axis direction PH and the cavity direction KH1 are not parallel to each other, the cavity side non-moldable surface M1 is detected. Furthermore, as an example of the rotating surface M0 constituting the side surface 1n1 of the bowl-shaped fifth protrusion 1n shown in FIG. 24C, the B curved surface 1n1 is parallel to the central axis direction PH and the cavity direction KH1. Since the cavity upstream-side outer diameter R1 of the central portion of the central axis is equal to or smaller than the cavity downstream-side outer diameter R2, it is detected as the cavity-side unmoldable portion M1.

  Further, in the non-moldable portion detection process of the second embodiment, the rotation surface M0 is the core-side non-moldable surface in the second non-moldable portion detection process in the core direction KH2 as in the cavity direction KH1. A process of determining whether or not M1 is performed. That is, the rotation surface M0 is parallel to the central axis direction PH and the core direction KH2, and the core upstream-side outer diameter R1 is greater than or equal to the core downstream-side outer diameter R2 over the entire central axis direction PH. If it is not discriminated, the rotating surface M0 is detected as the core-side unmoldable part M1.

Therefore, in the design support system S according to the second embodiment, when the selected surface is the rotation plane M0, the normal vectors (h1 to h16) as in the design support system S according to the first embodiment. Even if it is not calculated, it is accurately determined whether or not the rotating surface M0 is the cavity-side unmoldable surface M1 or the core-side unmoldable surface M1.
In the unmoldable part detection process of the second embodiment, the third moldable part detection process shown in ST131 to ST144 of FIG. 15 is executed in the same manner as the unmoldable part detection process of the first embodiment. Therefore, the cylindrical surface 1m1 shown in FIG. 24B can be formed by moving a slide core having a shape corresponding to the cylindrical surface 1m1 in the −Y direction as an example of the standard slide direction KH3. Detected as moldable parts M6 and M7. Each of the surfaces 1k1, 1n1 shown in FIG. 24A and FIG. 24C has the surfaces 1k1, 1n1 as long as the slide core is not divided even if a slide core having a shape corresponding to the surfaces 1k1, 1n1 is formed. Since it cannot be moved in any of the ± X direction and the ± Y direction as an example of the standard slide direction KH3 by itself, it is detected as the unmoldable portion M8.
In addition, the design support system S according to the second embodiment has the same effects as the design support system S according to the first embodiment.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Modification examples (H01) to (H012) of the present invention are exemplified below.
(H01) In the unmoldable portion detection process of the embodiment, it is desirable to combine the concave edge process shown in ST117 and ST118 in FIG. 14 and the projection point process shown in ST119 in FIG. For example, it is possible to omit the concave edge process and execute only the projection point process. In addition, the standing wall process shown in ST121 of FIG. 13 is preferably performed in association with the projection point process, but this can be omitted. In this case, the surface (M5) is detected as the moldable part M3 ′ or the third moldable parts M6 and M7 even if it is not detected as the standing wall M5.

(H02) In the unmoldable portion detection process of the embodiment, the connection angles α and α ′ are calculated based on the normal vectors h1 to h16 of the grid intersections p1 to p16, but the present invention is not limited to this. For example, the normal vectors HV1 and HV2 at the midpoint P of the first surface FM1 and the second surface FM2 connected by the boundary line L as in the unnecessary boundary line detection processing and the pointed unevenness detection processing. It is also possible to calculate based on this.
(H03) In the unnecessary boundary line detection process of the embodiment, based on the curvatures Ku1, Kv1, Ku2, and Kv2 of the first surface FM1 and the second surface FM2 at the midpoint P of the boundary line L, the boundary It is determined whether or not the line L is the unnecessary boundary line L1, but the present invention is not limited to this. For example, the curvature radii 1 / Ku1, 1 / Kv1, 1 of the first surface FM1 and the second surface FM2 are determined. / Ku2, 1 / Kv2 is calculated, and the curvature radius 1 / Ku1, 1 / Kv1 of the first surface FM1 and the curvature radius 1 / Ku2, 1 / Kv2 of the second surface FM2 are the same value? By determining whether or not the first curved state and the second curved state are the same, it is determined whether or not the boundary line L is an unnecessary boundary line L1. It is also possible.

(H04) The numerical values of the parameters α _max , β _max , LH1 and the like set in the above embodiment can be changed.
(H05) In the embodiment, in the unmoldable portion detection process, the unnecessary boundary line detection process, and the pointed uneven portion detection process, the detected unmoldable portion M8, the unnecessary boundary line L1, and the pointed shape, respectively. The concave portion E1 and the pointed convex portion E2 are colored and displayed. However, the present invention is not limited to this. For example, the boundary line of the detection location is highlighted, the colored portion of the detection location is blinked, or the like. It is also possible to display the detection location with an image, display the detection location with text, symbols, etc., or report the detection location with audio.

(H06) In the embodiment, the molded product image 1 includes the non-moldable part detection button 2, the unnecessary boundary line detection button 3, and the pointed uneven part button 4. However, the present invention is not limited thereto. For example, it is also possible to replace the button display with an image display such as an icon, or to control each process to be executed by a command input or the like.
(H07) In the design support system S of the above embodiment, the use of the design support system S is performed by transmitting and receiving the registration application information and the use permission information between the client personal computer PC and the license server. However, the present invention is not limited to this. For example, a process for confirming the use permission of the design support system S based on the use permission information is omitted by omitting the process of transmitting and receiving the registration application information and the use permission information. Can be omitted.

(H08) In the embodiment, in the unmoldable part detection process shown in ST5 of FIG. 12 and ST101 to ST105 of FIG. 13, the first unmoldable part detection process for detecting the cavity-side unmoldable parts M1 to M3. And the second unmoldable part detection process for detecting the core-side unmoldable parts M1 to M3, but is not limited to this, as in Patent Document 1, the first unmoldable part detection process or Either one of the second unmoldable part detection processes may be omitted. For example, the surface in contact with the male mold (K2) is designed to be limited to a flat surface without unevenness, and it is guaranteed that the core-side unmoldable portions M1 to M3 do not exist in the core direction KH2. If it is, it is possible to omit the second unmoldable portion detection process and execute only the first unmoldable portion detection process for the cavity direction KH1. Further, for example, it is possible to change the design so that the second unmoldable part detection process is omitted and only the first unmoldable part detection process is executed according to a user input or the like. In this case, the third moldable portion detection process for detecting the third moldable portions M6 and M7 is executed only for the detected cavity-side unmoldable portions M1 to M3.

(H09) In the above embodiment, the standard slide direction straight line KL3 is a straight line on the XY plane orthogonal to the Z-axis direction straight line as the cavity direction straight line KL1 and the core direction straight line KL2. Although the four straight lines in the ± Y directions are set, the present invention is not limited to this, and other straight lines on the XY plane may be used. In addition, for example, a straight line on a plane inclined without being orthogonal to the straight line in the Z-axis direction can be used. That is, the standard slide direction straight line KL3 is not limited to four straight lines in the ± X direction and the ± Y direction, and may be, for example, a straight line in three directions or less or five directions or more.
(H010) In the second embodiment, in order to determine whether or not the rotation surface M0 is the unmoldable portion M8, the central axis direction PH of the rotation surface M0 is the cavity direction KH1 or the core direction KH2. It is determined whether or not the rotation surface M0 is not the cavity-side unmoldable part M1 or the core-side unmoldable part M1. Is not limited to the directions KH1 and KH2, for example, it is determined whether or not the central axis direction PH of the rotation surface M0 is parallel to the standard slide direction KH3, and the rotation surface M0 is It is also possible to determine whether or not it is the third moldable part M6, M7.

(H011) In the second embodiment, the rotation plane M0 is not parallel to the central axis direction PH and the cavity direction KH1, or the rotation plane M0 is parallel to the central axis direction PH and the cavity direction KH1. However, when the cavity upstream-side outer diameter R1 is smaller than the cavity downstream-side outer diameter R2 over the entire region in the central axis direction PH, the rotation surface M0 is formed on the cavity-side unmoldable portion M1 or the core-side molding. Although it is determined as the impossible portion M1, the determination result of the rotation surface M0 is not limited to this. For example, the rotation surface M0 is parallel to the central axis direction PH and the cavity direction KH1, but the central axis When the cavity upstream outer diameter R1 includes a region smaller than the cavity downstream outer diameter R2 in the entire direction PH, the rotational surface M0 is not present. It is also possible to determine the unmoldable unit M8 in matter. In this case, the rotation surface M0 determined as the unmoldable portion M8 can be excluded from the third moldable portion detection process for detecting the third moldable portions M6, M7, and the unmoldable portion. The processing speed of the entire detection process can be improved.

(H012) In the embodiment, the cavity side unmoldable portions M1 to M3 and the cavity side unmoldable portions M1 to M3 detected by the first unmoldable portion detection process and the second unmoldable portion detection process are targeted. The third moldable part detection process is executed, and the cavity side unmoldable parts M1 to M3 and the cavity side unmoldable parts M1 to M3 other than the third moldable parts M6 and M7 are converted into the unmoldable part M8. However, the present invention is not limited to this, for example, the same as the first unmoldable part detection process and the second unmoldable part detection process. In addition, it is possible to execute the third moldable portion detection process for all surfaces of the molded product. In this case, in the unmoldable portion detection process, the unmoldable portion M8 is detected not based on the determination result of the third moldable portion detection process but on the determination results of all the detection processes.

FIG. 1 is an overall explanatory diagram of a design support system according to a first embodiment of the present invention. FIG. 2 is a functional block diagram illustrating the functions of the control unit of the client personal computer and the license server according to the first embodiment. FIG. 3 is a functional block diagram following FIG. FIG. 4 is an enlarged explanatory view of a main part for showing the relationship between the normal vector and the cavity direction at the grid intersection of the grid lines in the u direction and the v direction shown on the surface of the molded product. FIG. 5 is an explanatory diagram of a molded product image of Example 1. FIG. FIG. 6 is an enlarged explanatory view of a main part for showing the relationship between the cavity-side non-moldable surface and the cavity-side concave connection surface of the molded product, and FIG. 6A shows the cavity-side non-moldable surface and the cavity-side adjacent surface connected in a concave shape. FIG. 6B is an explanatory view showing a state in which the cavity-side non-moldable surface and the cavity-side adjacent surface are connected in a convex shape. FIG. 7 is an enlarged explanatory view of the main part of the cavity direction straight line extending from the cavity side projection surface of the molded product, FIG. 7A is a cross-sectional view of a state where the surface that the cavity direction straight line reaches exists, and FIG. It is sectional drawing of the state in which the surface which a straight line reaches | attains does not exist. FIG. 8 is an explanatory diagram of the unmoldable part and the third moldable part of Example 1, and FIG. 8A is a perspective explanatory view of a model of a molded product in which the cavity direction and the core direction are set in the vertical direction, and FIG. FIG. 8B is an explanatory diagram when FIG. 8A is viewed from the VIIIB direction which is the cavity direction. FIG. 9 is an enlarged explanatory view of a main part for showing the relationship between the first normal vector of the first surface and the second normal vector of the second surface at the midpoint of the boundary line of the molded product. FIG. 9B is an explanatory diagram when the first normal vector and the second normal vector are in the same direction, and FIG. 9B is an explanatory diagram when the first normal vector and the second normal vector are in different directions. FIG. 10 is an enlarged explanatory view of a main part for showing the relationship between the u1 direction curvature and v1 direction curvature of the first surface and the u2 direction curvature and v2 direction curvature of the second surface at the midpoint of the boundary line of the molded product, FIG. 10A is an explanatory diagram when the u1 direction curvature and the v1 direction curvature are the same as the u2 direction curvature and the v2 direction curvature, and FIG. 10B shows the u1 direction curvature, the v1 direction curvature, the u2 direction curvature, and the v2 direction curvature. It is explanatory drawing in the case of a different value. 11 is an enlarged cross-sectional explanatory view of a pointed uneven portion formed in a molded product, FIG. 11A is a cross-sectional view of a pointed concave portion, and FIG. 11B is a cross-sectional view of a pointed convex portion. FIG. 12 is a flowchart of the main process of the design support program according to the first embodiment of the present invention. FIG. 13 is a flowchart of the unmoldable portion detection process, and is an explanatory diagram of the subroutine of ST5 in FIG. FIG. 14 is a flowchart of the first unmoldable portion detection process, and is an explanatory diagram of a subroutine of ST102 of FIG. FIG. 15 is a flowchart of the third moldable portion detection process, and is an explanatory diagram of a subroutine of ST104 in FIG. FIG. 16 is a flowchart of the unnecessary boundary line detection process, and is an explanatory diagram of the subroutine of ST7 in FIG. FIG. 17 is a flowchart of the pointed uneven portion detection process, and is an explanatory diagram of the subroutine of ST9 in FIG. FIG. 18 is an operation explanatory view of the first embodiment, and is an enlarged explanatory view of an example of an unmoldable portion detected by the unmoldable portion detection process. FIG. 18A is detected as a cavity-side unmoldable surface and a cavity-side adjacent surface. 18B is an enlarged explanatory view of the boss viewed from the XVIIB direction of FIG. 15A, and FIG. 18C is an example of each part of the molded product detected as the cavity-side projection surface. It is explanatory drawing of an example of each part of the molded article which is not detected as a cavity side projection surface. FIG. 19 is an explanatory diagram of the slide core of Example 1, and is an explanatory diagram of the slide core corresponding to the model in the case where the protrusion is removed from the model of the molded product shown in FIG. FIG. 20 is a functional block diagram illustrating the functions of the control unit of the client personal computer and the license server according to the second embodiment, and corresponds to FIG. 2 according to the first embodiment. FIG. 21 is a functional block diagram continued from FIG. 20 and corresponds to FIG. 3 of the first embodiment. FIG. 22 is an enlarged explanatory view of a conical surface as an example of a rotating surface. FIG. 23 is a flowchart of the unmoldable portion detection process of the second embodiment, is an explanatory diagram of the subroutine of ST5 of FIG. 13, and is an explanatory diagram corresponding to FIG. 14 of the first embodiment. FIG. 24 is an operation explanatory view of the second embodiment, and is an enlarged explanatory view of an example of a non-moldable surface detected by the non-moldable portion detection process of the second embodiment. FIG. 24A is a truncated cone surface as an example of a non-moldable surface. FIG. 24B is a cross-sectional view of a cylindrical surface as an example of a non-moldable surface, and FIG. 24C is a cross-sectional view of a B-curve as an example of a non-moldable surface.

Explanation of symbols

α, α ′, β, β ′... first connection angle, second connection angle, 1a to 1n, M1 to M8.
1k, 1m, 1n, M0 ... rotating surface, AP2 ... non-moldable part detection program, C103 + C105J + C105K ... molded product display means, C104 ... normal line computing means, C105A2 ... first reverse direction component discrimination means, C105A2 '... second reverse direction Component discriminating means, M1 to M3: first unmoldable portion, second unmoldable portion, C105A: first unmoldable portion distinguishing means, C105A ′: second unmoldable portion distinguishing means, C105A3: rotating surface distinguishing means, C105A4 ... First central axis parallel discrimination means, C105A4 '... second central axis parallel discrimination means, C105A5 ... first cross section outer diameter discrimination means, C105A5' ... second cross section outer diameter discrimination means, C105B ... first adjacent non-moldable part discrimination means , C105B '... second adjacent non-moldable part discriminating means, C105B2 ... first connecting angle calculating means, C105B2' ... second connecting angle calculating means, C105B3 ... first Connection determining means, C105B3 '... second concave connection determining means, C105C1 ... first projected straight line arrival determining means, C105C1' ... second projected straight line arrival determining means, C105E ... unmoldable part determining means, C105E1 ... third molding possible Part determining means, C105E1a ... third projected straight line arrival determining means, h1-h16, HV1, HV2 ... normal, h1-h16, HV1 ... first normal, h1-h16, HV2 ... second normal, K1 ... first 1 mold, K2 ... 2nd mold, K3, K4 ... 3rd mold, KH1 ... 1st mold removal direction, KH2 ... 2nd mold removal direction, KH3 ... 3rd mold removal direction, KL1 ... 1st mold removal Directional straight line, KL2 ... second die cutting direction straight line, KL3 ... third die cutting direction straight line, L ... boundary line, M1 ... first unmoldable surface, second unmoldable surface, M2, M2 '... first adjacent surface, 2nd adjacent surface, M5 ... Standing wall, M6, M7 ... 3rd moldable part M8: Unmoldable part, p1 to p16, P ... Point, PC ... Unmoldable part detection device, PH ... Central axis direction, R1, R2 ... Outer diameter, R1 ... First upstream outer diameter, Second upstream outer diameter , R2 ... first downstream outer diameter, second upstream outer diameter, S ... unmoldable part detection system.

Claims (12)

Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. wherein together be moved to the second-type disconnect direction by a and the third type can not be molded is moved to the third-type disconnect direction determined to be in unmoldable portion that can not be molded, said first unmoldable portion When there is no surface that reaches the second die-cutting direction straight line extending from the first unmoldable portion, the surface is adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line. A non- moldable part discriminating means for discriminating that the standing wall is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second unmoldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line The non- moldable part discriminating means for discriminating that a certain standing wall is not the unmoldable part;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detecting device comprising: A rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Center axis parallel discrimination means;
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means;
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means;
The normal computing means for computing the normal of any point on said surface,
The normals, a first opposite direction component determining means for determining whether a first reverse component is a reverse direction component with respect to the first-type disconnect direction,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normals, and a second opposite direction component determining means for determining whether a second reverse component is a reverse direction component with respect to the second-type disconnect direction,
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists has the second die. It is determined that the portion cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction, and the surface is the central axis. And when the first upstream outer diameter is greater than or equal to the first downstream outer diameter in the entire area in the central axis direction. A non- moldable part discriminating means for discriminating that the surface is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. It is determined that the portion cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non- moldable part determining means for determining that the surface is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detecting device comprising: Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The surface determined to be the first unmoldable part is defined as a first unmoldable surface, and the surface determined to be adjacent to the first unmoldable surface and not the first unmoldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining whether or not
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining whether or not
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists has the second die. A non-moldable portion discriminating means for discriminating that it is a non-moldable portion that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction; ,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detecting device comprising: Based on the first normal and the second normal when the normal of the first unmoldable surface is the first normal and the normal of the first adjacent surface is the second normal, First connection angle calculating means for calculating a first connection angle formed by the first non-moldable surface and the first adjacent surface with respect to the boundary line;
The first concave connection determining means for determining whether the first unmoldable surface and the first adjacent surface are connected in a concave shape based on the first connection angle;
When the normal of the second non-moldable surface is the first normal and the normal of the second adjacent surface is the second normal, based on the first normal and the second normal, Second connection angle calculating means for calculating a second connection angle formed by the second non-moldable surface and the second adjacent surface with respect to the boundary line;
The second concave connection determining means for determining whether the second non-moldable surface and the second adjacent surface are connected in a concave shape based on the second connection angle;
The non-moldable part detecting device according to claim 3 , comprising: The third die cutting direction straight line is a straight line on a plane orthogonal to a straight line connecting the first die cutting direction straight line and the second die cutting direction straight line.
The non-moldable part detecting device according to any one of claims 1 to 4 . It is determined that there is a surface on which the second die-cutting direction straight line is reached, and the first unmoldable portion that is determined that there is no surface on which the third die-cutting direction straight line is reached is the third mold. A third moldable part discriminating means for discriminating from a third moldable part that can be molded by moving in the third mold drawing direction;
The second non-moldable portion that is determined that there is a surface that the first die-cutting direction straight line reaches and that the third die-cutting direction straight line does not exist can be formed into the third shape. Said third formable part discriminating means for discriminating from a part;
The molded product display means for displaying the third moldable portion;
The non-moldable part detecting device according to any one of claims 1 to 5, further comprising: Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. wherein together be moved to the second-type disconnect direction by a and the third type can not be molded is moved to the third-type disconnect direction determined to be in unmoldable portion that can not be molded, said first unmoldable portion When there is no surface that reaches the second die-cutting direction straight line extending from the first unmoldable portion, the surface is adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line. A non- moldable part discriminating means for discriminating that the standing wall is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second unmoldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line The non- moldable part discriminating means for discriminating that a certain standing wall is not the unmoldable part;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detection system comprising: A rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Center axis parallel discrimination means;
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means;
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means;
The normal computing means for computing the normal of any point on said surface,
The normals, a first opposite direction component determining means for determining whether a first reverse component is a reverse direction component with respect to the first-type disconnect direction,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The normals, and a second opposite direction component determining means for determining whether a second reverse component is a reverse direction component with respect to the second-type disconnect direction,
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists has the second die. It is determined that the portion cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction, and the surface is the central axis. And when the first upstream outer diameter is greater than or equal to the first downstream outer diameter in the entire area in the central axis direction. A non- moldable part discriminating means for discriminating that the surface is not the non- moldable part;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. It is determined that the portion cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non- moldable part determining means for determining that the surface is not the non-moldable part,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detection system comprising: Normal calculation means for calculating the normal of an arbitrary point on each surface constituting the three-dimensional shape of the molded article;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. First reverse direction component determination means for determining whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. A first unmoldable part discriminating means;
The surface determined to be the first unmoldable part is defined as a first unmoldable surface, and the surface determined to be adjacent to the first unmoldable surface and not the first unmoldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining whether or not
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not the second reverse direction component is a reverse direction component;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining whether or not
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means;
A second projected straight line arrival determining means for determining whether or not there is a surface from which the second mold drawing direction straight line extending from the first unmoldable portion extends in the second mold drawing direction;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. When,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists has the second die. A non-moldable portion discriminating means for discriminating that it is a non-moldable portion that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third die is moved in the third mold drawing direction;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line extends from the second unmoldable portion in the third mold drawing direction? Said third projected straight line arrival determining means for determining whether or not,
It is determined that there is a surface on which the first mold drawing direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third mold drawing direction straight line exists has the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction; ,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product, and the non-moldable portion of each surface;
A non-moldable part detection system comprising: Computer
Normal computing means for computing the normal of any point on each surface constituting the three-dimensional shape of the molded product ;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. first reverse component discriminating means for discriminating whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means ;
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not it has a second reverse direction component which is a reverse direction component ;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means ;
A second projected straight line arrival determining means for determining whether or not there is a surface on which a second mold drawing direction straight line extending in the second mold drawing direction from the first unmoldable portion exists ;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. wherein together be moved to the second-type disconnect direction by a and the third type can not be molded is moved to the third-type disconnect direction determined to be in unmoldable portion that can not be molded, said first unmoldable portion When there is no surface on which the second die-cutting direction straight line extending from the surface reaches, the first unmoldable portion and the surface adjacent to the first unmoldable portion and parallel to the second die-cutting direction straight line Non- moldable part discriminating means for discriminating that the standing wall is not the non- moldable part ,
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction ;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not ,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the part cannot be molded even if it is moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction, and the second mold cannot be used. When there is no surface on which the first mold drawing direction straight line extending from the part reaches, the second non-moldable part and the surface adjacent to the second non-moldable part and parallel to the first mold drawing direction straight line unmoldable portion discrimination means a certain vertical wall Metropolitan determined not to be the unmoldable unit,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface ;
A non-moldable part detection program characterized in that it functions as a non-moldable part. Computer
Rotating surface discriminating means for discriminating whether or not each surface constituting the three-dimensional shape of the molded product is a rotating surface that is a curved surface of a rotating body as a solid obtained by rotating around a straight line as a central axis;
First determining whether or not a central axis direction of the rotating surface is parallel to a first die-cutting direction which is a die-cutting direction of the first die of the molded product set in advance according to the surface. Central axis parallel discrimination means,
When the surface is a rotating surface in which the central axis direction and the first mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the first mold. A first cross-section outer diameter that determines whether or not a first upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a first downstream outer diameter that is an outer diameter on the downstream side in the first mold drawing direction. Discrimination means,
The second die-cutting direction as the die-cutting direction of the second die corresponding to the first die and the central axis direction of the rotating surface, which is opposite to the first die-drawing direction. A second central axis parallel discrimination means for discriminating whether or not the die cutting direction is parallel;
When the surface is a rotating surface in which the central axis direction and the second mold drawing direction are parallel to each other, the outer diameter as the diameter of a circle of a vertical section with respect to the central axis direction of the rotating surface is the second mold. A second sectional outer diameter for determining whether or not a second upstream outer diameter that is an outer diameter on the upstream side in the drawing direction is equal to or greater than a second downstream outer diameter that is an outer diameter on the downstream side in the second mold drawing direction. Discrimination means,
Normal computing means for computing the normal of any point on said surface,
The normals, the first reverse component determining means for determining whether a first reverse component is a reverse direction component with respect to the first-type disconnect direction,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means ;
The normals, second reverse-component determining means for determining whether a second reverse component is a reverse direction component with respect to the second-type disconnect direction,
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means ;
A second projected straight line arrival determining means for determining whether or not there is a surface on which a second mold drawing direction straight line extending in the second mold drawing direction from the first unmoldable portion exists ;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. The surface is determined to be an unmoldable portion that cannot be molded even if moved in the second die-cutting direction and cannot be molded even if the third die is moved in the third die-drawing direction, and the surface is the central axis And when the first upstream outer diameter is determined to be greater than or equal to the first downstream outer diameter in the entire central axis direction. A non- moldable part discriminating means for discriminating that the surface is not the non-moldable part ,
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction ;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not ,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. It is determined that the portion cannot be molded even if moved in the first die-cutting direction, and the third die cannot be molded even if moved in the third die-drawing direction, and the surface is the center. When it is determined that the rotation direction is parallel to the axial direction and the second die-cutting direction, and that the second upstream outer diameter is greater than or equal to the second downstream outer diameter in the entire central axis direction. In addition, the non- moldable part determining means for determining that the surface is not the non-moldable part ,
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface ;
A non-moldable part detection program characterized in that it functions as a non-moldable part. Computer
Normal computing means for computing the normal of any point on each surface constituting the three-dimensional shape of the molded product ;
The normal line has a first reverse direction component that is a direction component in a reverse direction with respect to a first mold drawing direction that is a mold drawing direction of a first mold of the molded product that is set in advance according to the surface. first reverse component discriminating means for discriminating whether or not,
The surface having the point where the normal line having the first reverse direction component is calculated is determined to be a first unmoldable portion that cannot be molded simply by moving the first mold in the first mold drawing direction. First non-moldable part discriminating means ;
The surface determined to be the first non-moldable portion is defined as a first non-moldable surface, and the surface determined to be adjacent to the first non-moldable surface and not the first non-moldable surface is a first adjacent surface. In this case, whether the first non-moldable surface and the first adjacent surface are connected in a concave shape with respect to a boundary line provided between the first non-moldable surface and the first adjacent surface. First concave connection determining means for determining
A first adjacent non-moldable portion for determining that the first adjacent surface is the first non-moldable portion when it is determined that the first non-moldable surface and the first adjacent surface are connected in a concave shape Discrimination means,
The normal line is a second die-cutting direction as a die-drawing direction of the second die corresponding to the first die, and is in the second die-cutting direction that is opposite to the first die-cutting direction. A second reverse direction component determining means for determining whether or not it has a second reverse direction component which is a reverse direction component ;
The surface having the point where the normal having the second reverse direction component is calculated is determined to be a second unmoldable portion that cannot be molded simply by moving the second mold in the second mold drawing direction. A second non-moldable part discriminating means ;
The surface determined to be the second unmoldable part is defined as a second unmoldable surface, and the surface determined to be adjacent to the second unmoldable surface and not the second unmoldable surface is a second adjacent surface. Whether or not the second non-moldable surface and the second adjacent surface are connected in a concave shape with respect to a boundary line provided between the second non-moldable surface and the second adjacent surface. Second concave connection determining means for determining
A second adjacent non-moldable portion that determines that the second adjacent surface is the second non-moldable portion when it is determined that the second non-moldable surface and the second adjacent surface are connected in a concave shape. Discrimination means,
A second projected straight line arrival determining means for determining whether or not there is a surface on which a second mold drawing direction straight line extending in the second mold drawing direction from the first unmoldable portion exists ;
When it is determined that there is a surface on which the straight line extending in the second mold releasing direction exists, the direction from the first unmoldable portion to the third mold other than the first mold and the second mold is determined. And a third projected straight line arrival determining means for determining whether or not there is a surface on which a third die cutting direction straight line extending in a third die cutting direction other than the first die cutting direction and the second die cutting direction exists. ,
It is determined that there is a surface on which the second die-cutting direction straight line reaches, and the first unmoldable portion that is determined to have a surface on which the third die-cutting direction straight line exists is used as the second mold. A non-moldable part discriminating means for discriminating that it is a non-moldable part that cannot be molded even if moved in the second mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction ;
First projected straight line arrival determining means for determining whether or not there is a surface from which the first mold drawing direction straight line extending from the second unmoldable portion extends in the first mold drawing direction ;
If it is determined that there is a surface on which the first mold drawing direction straight line reaches, is there a surface on which the third mold drawing direction straight line that extends in the third mold drawing direction from the second unmoldable portion exists? Said third projected straight line arrival determining means for determining whether or not ,
It is determined that there is a surface on which the first die-cutting direction straight line reaches, and the second non-moldable portion that is determined to have a surface on which the third die-cutting direction straight line arrives is used as the first mold. The non-moldable part discriminating means for discriminating that the non-moldable part cannot be molded even if moved in the first mold drawing direction and cannot be molded even if the third mold is moved in the third mold drawing direction ;
Molded product display means for displaying each surface constituting the three-dimensional shape of the molded product and the non-moldable portion of each surface ;
A non-moldable part detection program characterized in that it functions as a non-moldable part.