JP3267030B2 - CAD / CAM system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD / CAM system, and more particularly, to a CAD / CAM system that supports the definition of a 2.5-axis shape.

[0002]

2. Description of the Related Art In general, in CAD / CAM systems, 3
2. Description of the Related Art There is known a definition of a 2.5-axis shape representing a solid in a three-dimensional space using a contour part of a three-dimensional plane figure called a contour shape and a gradient part of a three-dimensional front figure called a cross-sectional shape. Here, if a cone as shown in FIG. 21 is represented by a 2.5-axis shape as a solid, it becomes as shown in FIG. Reference numeral 47 in FIG. 22A denotes a bottom surface portion of a three-dimensional top view of a contour shape viewed from the top surface side. Reference numeral 48 in FIG. 22 (b) is a gradient portion of a three-dimensional front view having a sectional shape. The 2.5-axis shape includes a contour shape 47 and a cross-sectional shape 48 (see FIG. 22C). The positional relationship between the contour shape 47 and the cross-sectional shape 48 is as shown in FIG.
FIG. 23 shows a state in which the 2.5-axis shape of FIG. 22 is viewed from above (Z-axis direction). Reference numeral 49 denotes a tangent line of the contour shape 47. The cross-sectional shape 48 intersects perpendicularly with a tangent line 49 of the contour shape 47.

Some general 2.5-axis contours are more complicated, but the cross-sectional shape must always intersect perpendicularly with the tangent of the contour. Further, a plurality of cross-sectional shapes can be arranged in one contour shape. However, up to one cross-sectional shape can be arranged for one reference shape (line, arc, etc.) constituting the contour shape. FIG. 24 and FIG. 25 are examples, and FIG. 25 shows the solid of FIG. 24 expressed in a 2.5-axis shape. In FIG. 25A, reference numeral 50 denotes a contour shape, and reference numerals 51 and 51 in FIG. 25B and FIG.
52 indicates a cross-sectional shape. That is, the cross-sectional shapes arranged in the contour shape 50 do not all have to be the same. The cross-sectional shape 52 corresponds to the three-dimensionally cut surface 53 in FIG. As described above, the shape composed of the contour shape and the cross-sectional shape is called a 2.5-axis shape, and defining the 2.5-axis shape is called a 2.5-axis shape definition.

FIG. 12 is a diagram showing a general configuration of a CAD / CAM system. 1 is a central processing unit (CPU), 2 is a main storage device, which secures a command group 21 and a database 22, and a CPU 1 The input command of the group 21 is interpreted and each command is executed.
The shape definition command 21a in the command group 21 defines a shape such as a line or a circle by the shape defining means. The shape defined by the shape definition command 21a is registered in the database 22 and displayed on the CRT display 7. The defined shape can be moved or rotated by a shape editing command such as the shape translation command 21b or the shape rotation command 21c. Reference numeral 3 denotes a plotter for outputting the drawn drawings on paper, 4 denotes a bus, 6 denotes a printer for printing a screen, etc., 7 denotes a CRT display for displaying a defined shape, origin axis, input request message, etc. on the screen; Reference numeral 8 denotes a keyboard for inputting numerical values, coordinates, and the like when defining or editing a shape; 9 a mouse for selecting a figure or a command menu displayed on the CRT display 7;
Reference numeral 0 denotes an auxiliary storage device for storing the drawn drawings, and these devices and the like are all connected via the bus 4.

Next, in such a CAD / CAM system, a 2.5-axis solid as shown in FIG. 14 will be considered. This three-dimensional object has a contour shape 31 and a cross-sectional shape 3
2 and 33, a 2.5-axis shape in which a contour shape 31 and a cross-sectional shape 32 intersect at an arrangement point P1, and a 2.5-axis shape in which a contour shape 34 and a cross-sectional shape 35 intersect at an arrangement point P2.
The procedure for defining the two 2.5-axis shapes, namely the two-axis shape, will be described with reference to the flowchart of FIG. FIG. 14A is a diagram of a 2.5-axis solid as viewed three-dimensionally, and FIG. 14B is a diagram of a 2.5-axis solid viewed from above.

First, in step S1, as shown in FIG. 15, a shape 3 corresponding to a contour shape is formed on a two-dimensional XY plane.
1, 34 are defined using the shape definition command 21a. Next, in step S2, a shape 3 corresponding to the cross-sectional shape is obtained.
6 is also defined using the shape definition command 21a. At this time, the line shape is defined by designating two points by using the keyboard 8 or the mouse 9, and the arc shape is defined by designating three points by using the keyboard 8 or the mouse 9, or by designating one point and a radius. Is defined as FIG. 16 is a three-dimensional representation of FIG.

Next, in step S3, a rotation angle (in this case, the X axis is the central axis and the rotation angle is 90 degrees) that is perpendicular to the surface formed by the contour shape 31 is calculated. Next, step S4
Then, the sectional shape 36 defined by the shape definition command 21a is rotated using the shape rotation movement command 21c based on the obtained rotation angle (see FIG. 17). Shape 45 is the cross-sectional shape after rotation. Next, in step S5, a movement amount for translating the cross-sectional shape 45 to the arrangement point P1 is calculated. Next, in step S6, the sectional shape 4 is obtained by the shape parallel movement command 21b based on the obtained movement amount.
5 is translated to the arrangement point P1 (see FIG. 18). The shape 46 is a cross-sectional shape after the movement.

Next, in step S7, an angle between a straight line perpendicular to a tangent to the arrangement point P1 of the contour shape 31 and the X axis is calculated. Next, in step S8, the sectional shape 46 is rotated using the shape rotation movement command 21c based on the obtained rotation angle (see FIG. 19). The rotation axis at this time is a straight line that passes through the arrangement point P1 and is parallel to the Z axis. Shape 32 is the cross-sectional shape after rotation.

[0009] Next, as shown in FIG.
The process returns to step S2 in order to arrange the cross-sectional shape 35 in the step S2. In step S2, the cross-sectional shape 35 is defined again using the shape definition command 21a, and the following steps S3 to S8 are executed in the same manner with the arrangement point set to P2.

Further, as shown in FIG. 14A, the process returns to step S2 in order to arrange the sectional shape 33 on the contour shape 31. In step S2, the shape definition command 21
The shape 44 corresponding to the cross-sectional shape 33 is defined on the XY plane by using a, and the following steps S3 to S8 are similarly executed. By repeating this five times, the sectional shape 33 is arranged on the contour shape 31. In such a procedure, the cross-sectional shapes 32, 33, and 35 are arranged on the contour shapes 31, 34.

[0011]

SUMMARY OF THE INVENTION Conventional CAD / CAM
In the system, as described above, there are many operations when arranging the cross-sectional shape 32 on the contour shape 31, and especially when repeatedly arranging the cross-sectional shape 35 on another contour shape 34, the operation is very redundant and enormous. Was taking a long time. In addition, it is necessary to perform complicated figure calculations such as calculating the inclination of the normal line in order to calculate the amount of movement and the rotation angle for the arrangement. But it wasn't easy to use. Further, since the operation is very redundant, there is a great possibility that a calculation error may occur when performing a graphic calculation.

The present invention has been made in order to solve such a problem. Anyone can arrange the cross-sectional shape at the correct position of the contour shape by a simple operation.
The task is to provide an AD / CAM system.

[0013]

A CAD according to claim 1 is provided.
The / CAM system is a CAD / CAD system that supports shape definition that represents a solid in a three-dimensional space by the shape of a contour part and a gradient part.
A CAM system, wherein a shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on an arbitrary plane in a three-dimensional space, and a shape defined on an arbitrary plane by the shape defining means The reference position of the original shape which is the reference position on the reference shape of the original shape and the relative position on the shape after the movement are designated .
When the horizontal axis is the normal to the reference position on the plane of the reference shape, and specified on an arrangement plane configured by a coordinate system with the vertical axis being the normal to the surface formed from the shape continuous to the reference shape. And a cross-sectional shape arranging means for moving the reference position and the relative position so as to overlap with each other.

According to a second aspect of the present invention, there is provided a CAD / CAM system for supporting a shape definition in which a solid in a three-dimensional space is represented by the shape of a contour portion and a gradient portion. A shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on a plane of the original shape, and an original shape defined on an arbitrary plane by the shape defining means, a reference shape of the original shape. when specified with the reference position and the relative positions of the shape after movement of the upper, the law for the the horizontal axis normal to said reference position on the plane of the reference shape, the surface can be a continuous shape to the reference shape A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a line as a vertical axis, and a shape arranged by the cross-sectional arranging unit. Reference position Cross-sectional shape horizontal rotation means that rotates 180 degrees around the vertical axis, and cross-sectional shape vertical rotation means that rotates 180 degrees about the horizontal axis through the reference position through the shape arranged by the cross-section arrangement means. It is provided.

According to a third aspect of the present invention, there is provided a CAD / CAM system for supporting a shape definition in which a solid in a three-dimensional space is represented by the shape of a contour portion and a gradient portion. A shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on a plane of the original shape, and an original shape defined on an arbitrary plane by the shape defining means, a reference shape of the original shape. when specified with the reference position and the relative positions of the shape after movement of the upper, the law for the the horizontal axis normal to said reference position on the plane of the reference shape, the surface can be a continuous shape to the reference shape A cross-sectional shape arranging means for moving the reference position and the relative position specified on an arranging plane constituted by a coordinate system having a line as a vertical axis, and a cross-sectional shape arranged by the cross-sectional arranging means a finger Said cross-sectional shape and the intersection of the reference shape as a reference position, continuously normal to the reference position of the reference shape on the horizontal axis, the reference position as the reference shape with specifying the criteria shape and relative position When the shape passing through the relative position of the cross-sectional shape on the coordinate system having the vertical axis as the normal to the surface formed from the formed shape is the relative shape, the normal to the relative position of the relative shape is the horizontal axis, and the relative Cross-sectional shape copying means for copying on a coordinate system having a vertical axis as a normal to a surface formed from a shape continuous from the relative shape passing through the position.

According to a fourth aspect of the present invention, there is provided a CAD / CAM system for supporting a definition of a solid in a three-dimensional space by expressing the shape of a contour portion and a gradient portion. A shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on a plane of the original shape, and an original shape defined on an arbitrary plane by the shape defining means, a reference shape of the original shape. when specified with the reference position and the relative positions of the shape after movement of the upper, the law for the the horizontal axis normal to said reference position on the plane of the reference shape, the surface can be a continuous shape to the reference shape A cross-sectional shape arranging means for moving the reference position and the relative position specified on an arranging plane constituted by a coordinate system having a line as a vertical axis, and a cross-sectional shape arranged by the cross-sectional arranging means a finger Have been the intersection of <br/> the cross-sectional shape and the reference shape with reference shape and relative position as a reference position, the normal to the reference position of the reference shape on the horizontal axis, the reference position as the reference shape When the shape passing through the relative position of the cross-sectional shape on the coordinate system with the normal axis to the surface formed from a continuous shape as the vertical axis is the relative shape, the normal to the relative position of the relative shape is the horizontal axis, Cross-sectional shape moving means for moving on a coordinate system having a vertical axis as a normal to a surface formed from a shape continuous with the relative shape passing through the relative position.

According to a fifth aspect of the present invention, there is provided a CAD / CAM system for supporting the definition of a shape in a three-dimensional space which is represented by the shape of a contour portion and a gradient portion. A shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on a plane of the original shape, and an original shape defined on an arbitrary plane by the shape defining means, a reference shape of the original shape. when specified with the reference position and the relative positions of the shape after movement of the upper, the law for the the horizontal axis normal to said reference position on the plane of the reference shape, the surface can be a continuous shape to the reference shape A cross-sectional shape arranging means for moving the reference position and the relative position specified on an arrangement plane constituted by a coordinate system having a line as a vertical axis, and the original shape, the reference shape, and the reference position One of When the specified above is intended to and a cross-sectional shape collective arrangement means for arranging the cross-sectional shape in the cross-sectional shape disposed means equivalent conditions for all shape continuous with the specified the reference shape.

A CAD / CAM system according to claim 6 is a CAD / CAM system that supports a shape definition that represents a solid in a three-dimensional space by the shape of a contour part and a gradient part, and is an arbitrary CAD / CAM system in a three-dimensional space. A shape defining means for defining a shape consisting of a reference shape such as a line, a circle, and an arc on a plane of the original shape, and an original shape defined on an arbitrary plane by the shape defining means, a reference shape of the original shape. when specified with the reference position and the relative positions of the shape after movement of the upper, the law for the the horizontal axis normal to said reference position on the plane of the reference shape, the surface can be a continuous shape to the reference shape A cross-sectional shape arranging means for moving the reference position and the relative position specified on an arrangement plane constituted by a coordinate system having a line as a vertical axis, and the original shape, the reference shape, and the reference position One of When it is specified on the cross-sectional shape collective arrangement means for arranging the cross-sectional shape in the cross-sectional shape disposed means equivalent conditions for all shape continuous with the specified the reference shape, the cross-sectional shape disposed means or the cross-section Cross-sectional shape deleting means for deleting all the cross-sectional shapes arranged continuously with the reference shape by designating the reference shape on which the cross-sectional shape is arranged by the shape batch arrangement means. is there.

[0019]

In the first aspect, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means on the reference position on the plane of the reference shape of the original shape and on the shape after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. In this way, the amount of movement and the angle of rotation for arranging the cross-sectional shape are calculated and simplified in the system.

According to a second aspect of the present invention, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means into a reference position on the plane of the reference shape of the original shape and a reference position on the plane after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. In addition, the cross-sectional shape horizontal rotation means,
This displaced shape passes through the reference position and is rotated 180 degrees about the vertical axis. Further, the cross-sectional shape vertical rotation means rotates the similarly moved shape by 180 degrees around the horizontal axis through the reference position. In this way, the movement amount and the rotation angle for the cross-sectional shape movement and rotation are calculated and simplified in the system.

According to a third aspect of the present invention, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means to a reference position on the plane of the reference shape of the original shape and a reference position on the plane after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. Also, in the cross-section shape copying means,
The cross-sectional shape moved and arranged specifies the reference shape and the relative position, the intersection of the cross-sectional shape and the reference shape is used as the reference position, the normal to the reference position of the reference shape is set as the horizontal axis, and the reference shape passes through the reference position and becomes the reference shape. When the shape passing through the relative position of the cross-sectional shape on the coordinate system whose vertical axis is the normal to the surface formed from the continuous shape is the relative shape, the horizontal axis is the normal to the relative position of the relative shape, and The image is copied on a coordinate system whose vertical axis is a normal to a surface formed from a shape continuous with the relative shape. In this way, the movement amount and the rotation angle for the cross-sectional shape copy are calculated in the system and simplified.

According to a fourth aspect of the present invention, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means into a reference position on the plane of the reference shape of the original shape and a reference position on the plane after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. Also, the cross-sectional shape moving means specifies the reference shape and the relative position, and sets the intersection of the cross-sectional shape and the reference shape as the reference position, and the normal to the reference position of the reference shape as the horizontal axis. When the shape passing through the relative position of the cross-sectional shape on the coordinate system with the vertical axis being the normal to the surface formed from the shape continuous from the reference shape passing through the reference position is defined as the relative shape, the normal to the relative position of the relative shape is defined as The coordinate system is moved on a coordinate system having a horizontal axis and a normal to a surface formed of a shape continuous from the relative position and continuing the relative shape. In this way, the movement amount and the rotation angle for moving the cross-sectional shape are calculated and simplified in the system.

According to a fifth aspect of the present invention, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means into a reference position on the plane of the reference shape of the original shape and a reference position on the plane after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. In addition, when one or more of the original shape, the reference shape, and the reference position are specified by the cross-sectional shape collective arrangement means, the cross-sections of all shapes continuous with the specified reference shape are obtained under the same conditions as the cross-sectional shape arrangement means. The shape is arranged. In this way, the movement amount and the rotation angle for the batch arrangement of the sectional shapes are calculated in the system and are simplified.

According to a sixth aspect of the present invention, the original shape defined on an arbitrary plane by the shape defining means is changed by the cross-sectional shape arranging means to the reference position on the plane of the reference shape of the original shape and the reference position on the plane after the movement. By specifying the relative position, the horizontal axis is the normal to the reference position of the reference shape, and the vertical axis is the normal to the surface formed from the shape that is continuous with the reference shape. The reference position and the relative position are moved so as to overlap. In addition, when one or more of the original shape, the reference shape, and the reference position are specified by the cross-sectional shape collective arrangement means, the cross-sections of all shapes continuous with the specified reference shape are obtained under the same conditions as the cross-sectional shape arrangement means. The shape is arranged. Further, by specifying the reference shape on which the moved and arranged cross-sectional shape is arranged by the cross-sectional shape deleting means, all the cross-sectional shapes arranged continuously from the reference shape are deleted. Thus, the designation for deleting the cross-sectional shape is simplified.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to specific embodiments. FIG. 1 shows a CAD / CA according to an embodiment of the present invention.
1 is a configuration diagram illustrating an M system. Note that components having the same configuration or corresponding parts as those of the above-described conventional system are denoted by the same reference numerals and symbols. In FIG.
1 is a CPU, 2 is a main storage device, which secures a command group 21 and a database 22, and CPU 1 is a command group 2
Interpret the input command of 1 and execute each command. In the command group 21, 21a is a shape definition command, 21d is a cross-sectional shape arrangement command, 21e is a cross-sectional shape rotation command, 21f is a cross-sectional shape copy command, 21g is a cross-sectional shape move command, 21h is a cross-sectional shape batch arrangement command, and 21i is a cross-sectional shape command. This is a shape deletion command. The shapes such as lines and circles defined by using the shape definition command 21a are registered in the database 22 and the CRT.
It is displayed on the display 7. Then, various editing is executed by using the commands 21d to 21i for the defined shape. Reference numeral 3 denotes a plotter for outputting the drawn drawings on paper, 4 denotes a bus, 6 denotes a printer for printing a screen, etc., 7 denotes a CRT display for displaying a defined shape, origin axis, an input request message, etc. on the screen; Reference numeral 8 denotes a keyboard for inputting numerical values and coordinates when defining and editing shapes, 9 denotes a mouse for selecting a figure or a command menu displayed on the CRT display 7, and 10 denotes an auxiliary for saving a drawn drawing. These devices are all storage devices.
Connected through.

Next, in such a CAD / CAM system, a 2.5-axis solid as shown in FIG. 14 will be considered. This three-dimensional object has a contour shape 31 and a cross-sectional shape 3
A 2.5-axis shape consisting of a contour shape 31 and a cross-sectional shape 32 intersecting at an arrangement point P1 and a 2.5-axis shape consisting of a contour shape 34 and a cross-sectional shape 35 intersecting at an arrangement point P2 The procedure for defining the two 2.5-axis shapes will be described with reference to the flowchart of FIG. FIG. 14A is a diagram of a 2.5-axis solid as viewed three-dimensionally, and FIG. 14B is a diagram of a 2.5-axis solid viewed from above.

First, in step S11, as shown in FIG. 15, a shape 3 corresponding to a contour shape is formed on a two-dimensional XY plane.
1, 34 are defined using the shape definition command 21a. Next, in step S12, a shape 36 corresponding to the cross-sectional shape is defined using the shape definition command 21a. At this time, the line shape is defined by designating two points by using the keyboard 8 or the mouse 9, and the arc shape is defined by designating three points by using the keyboard 8 or the mouse 9, or by designating one point and a radius. Defined. FIG. 15 is a three-dimensional representation of FIG.

Next, in step S13, the sectional shape 36 is arranged in the contour shape 31 using the sectional shape arrangement command 21d, that is, the sectional shape arrangement means. As an operation, first, a shape to be arranged as a cross-sectional shape (here, shape 3
6) is selected with the mouse 9, and then a reference point B for placement is designated by the mouse 9, and further, a placement point P 1 on the contour shape 31 is designated by the mouse 9. FIG. 4 shows a cross-sectional shape in which the arrangement is completed. The arrangement procedure is as shown in FIG.
A straight line 40 perpendicular to a tangent line 39 to the arrangement point P1 of the contour shape 31 is defined as an X1 axis, and a normal (corresponding to the Z axis) to a surface formed by the contour shape 31 is defined as a Y1 axis. Is moved so that the reference point B and the arrangement point P1 overlap.

As described above, in the embodiment of CAD /
The CAM system supports a shape definition that represents a solid in a three-dimensional space by the shape of a contour portion and a gradient portion, and a reference shape such as a line, a circle, or an arc on an arbitrary plane in the three-dimensional space. Definition command 21a for defining a shape consisting of
A shape defining means achieved by: and an original shape defined on an arbitrary plane by the shape defining means, a reference position on the reference shape of the original shape and a relative position on the moved shape. By specifying, the horizontal axis is the normal to the reference position of the reference shape, and the reference position specified on the placement plane composed of a coordinate system with the vertical axis being the normal to the surface formed from the shape continuous to the reference shape. A cross-sectional shape arranging means achieved by a cross-sectional shape arranging command 21d that moves so that the relative position overlaps with the relative position.

Therefore, the cross-sectional shape 36 and the contour shape 31 defined on an arbitrary plane using the shape definition command 21a and the reference point B using the cross-sectional shape arrangement command 21d.
When the arrangement point P1 is designated, the arrangement point P1 on the contour shape 31 and the reference point B of the cross-sectional shape 36 are moved so as to overlap each other to become the cross-sectional shape 32. Therefore, the sectional shape can be quickly moved and arranged to the arrangement point on the contour shape by a simple operation procedure.

Next, in step S14, a sectional shape 35 as shown in FIG.
A case will be described in which the movement is performed so as to be symmetrical with respect to the plane formed by the contour shape 34 as in the cross-sectional shape 41 shown in FIG. The sectional shape rotation command 21e, that is, the outline shape 34 and the cross-sectional shape 35 are designated by the mouse 9 using the sectional shape vertical rotation means.
Is selected, and the predetermined key of the keyboard 8 is pressed, whereby the outline 34 passing through the reference point P2 is rotated by 180 degrees with the normal to the reference point P2 as the rotation axis. Also,
Similarly, the sectional shape 3 shown in FIG.
5 passes through the reference point P2 like the cross-sectional shape 42 and the contour shape 3
Similarly, in the case of moving so as to rotate by 180 degrees around the normal to the surface formed in step 4, the sectional shape rotation command 21e, that is, the contour shape 34 and the sectional shape 35 are changed Is selected and a predetermined key of the keyboard 8 is pressed, so that the sectional shape 42
It is rotated as street. FIG. 7A is a diagram of a three-dimensional view of a 2.5-axis shape solid, and FIG. 7B is a diagram of a 2.5-axis shape solid viewed from above.

As described above, the CAD / data of one embodiment of the present invention
In addition to the above-described means, the CAM system further includes a sectional shape rotation command for rotating the shape arranged by the sectional shape arrangement means achieved by the sectional shape arrangement command 21d through the reference position by 180 degrees about the vertical axis. 21e means for rotating the cross-sectional shape achieved by 21e, and the cross-sectional shape arrangement command 21d
And a cross-sectional shape vertical rotation means achieved by a cross-sectional shape rotation command 21e for rotating the shape arranged by the cross-sectional shape arranging means by 180 degrees around the horizontal axis through the reference position. is there.

Therefore, in addition to the above-described procedure, when the pre-arranged cross-sectional shape 35, contour shape 34, and arrangement point (reference position) P2 are designated using the cross-sectional shape rotation command 21e, the contour shape 34 The cross-sectional shape 35 is rotated by 180 degrees about the arrangement point P2, and becomes the cross-sectional shape 42. Therefore, the sectional shape can be quickly rotated and moved with respect to the arrangement point on the contour shape by a simple operation procedure.

Next, in step S15, as shown in FIG. 4, the sectional shape copy command 21f, that is, the sectional shape 32 is copied to the contour shape 34 using the sectional shape copying means. By selecting the cross-sectional shape 32 and the reference shape 37 with the mouse 9 and specifying the arrangement point P2 on the contour shape 34 at the destination with the mouse 9 as well, the same relationship as the relationship between the cross-sectional shape 32 and the reference shape 37 is obtained. The cross-sectional shape 32 is copied to the arrangement point P2 on the contour shape 34 while keeping it.
The shape 35 shown in FIG. 4 is a cross-sectional shape after copying.

As described above, the CAD /
In addition to the above-described means, the CAM system further specifies a reference shape and a relative position with respect to the cross-sectional shape arranged by the cross-sectional shape arranging means achieved by the cross-sectional shape arranging command 21d, and specifies an intersection of the cross-sectional shape and the reference shape. Is the reference position, the normal to the reference position of the reference shape is the horizontal axis, and the normal to the surface formed from the shape that passes through the reference position and is continuous with the reference shape is the vertical axis. When the shape is a relative shape, the normal to the relative position of the relative shape is the horizontal axis, and the vertical line is the normal to the surface formed from the shape that is continuous with the relative shape passing through the relative position, the cross-sectional shape to be copied on the coordinate system It is provided with a cross-sectional shape copying means achieved by the copy command 21f.

Therefore, in addition to the above-described procedure, when the pre-arranged cross-sectional shape 32, outline shape 34, and arrangement point (on the coordinate system) P2 are designated using the cross-sectional shape copy command 21f, the outline shape 34 The cross-sectional shape 35 is copied to the upper arrangement point P2. Therefore, the sectional shape can be quickly copied to the arrangement point on the contour shape by a simple operation procedure.

Further, a case where the cross-sectional shape is moved as shown in FIG. 8 in order to change the design or adjust the appearance in step S16 will be described. The sectional shape movement command 21g, that is, the sectional shape 32 using the sectional shape moving means
And the reference shape 37 are selected by the mouse 9, and the arrangement point P3 on the destination contour shape 31 is designated by the mouse 9 as well.
Is moved while maintaining the same relation as the relation. The shape 43 is a cross-sectional shape after the movement.

As described above, in the embodiment of CAD /
In addition to the above-described means, the CAM system further specifies a reference shape and a relative position with respect to the cross-sectional shape arranged by the cross-sectional shape arranging means achieved by the cross-sectional shape arranging command 21d, and specifies an intersection of the cross-sectional shape and the reference shape. Is the reference position, the normal to the reference position of the reference shape is the horizontal axis, and the normal to the surface formed from the shape that passes through the reference position and is continuous with the reference shape is the vertical axis. When the shape is a relative shape, the horizontal axis is the normal to the relative position of the relative shape, and the vertical axis is the normal to the surface formed from the shape continuous to the relative shape passing through the relative position, and the cross-sectional shape moving on the coordinate system It is provided with a section shape moving means achieved by a movement command 21g.

Therefore, in addition to the above-described procedure, when the pre-arranged cross-sectional shape 32, outline shape 31, and arrangement point (on the coordinate system) P3 are designated using the cross-sectional shape movement command 21g, the outline shape 31 The cross-sectional shape 4
3 is moved. Therefore, the sectional shape can be quickly moved to the arrangement point on the contour shape by a simple operation procedure.

Next, as shown in FIGS. 9 and 10, a case will be described in which the cross-sectional shape 33 is arranged in all the reference shapes (lines, arcs, etc.) of the contour shape 31 at one time. First, in step S12, as shown in FIG. 9, the sectional shape 44 corresponding to the sectional shape 33 of FIG.
Is defined using Next, in step S17, the sectional shape 44, the reference point C, and the contour shape 31 are designated by the mouse 9 using the sectional shape collective placement command 21h, that is, the sectional shape collective placement means, so that the sectional shape 44 is contoured. It is arranged at the midpoint of all reference shapes (lines, arcs, etc.) of the shape 31. The five shapes 33 shown in FIG. 10 are the cross-sectional shapes arranged using the sectional shape collective arrangement means.

As described above, CAD /
The CAM system includes, in addition to the means described above, an original shape,
By specifying one or more of the reference shape and the reference position, a sectional shape batch arrangement command 21h for arranging a sectional shape on all shapes continuous with the designated reference shape under the same conditions as the sectional shape arranging means. And means for collectively arranging cross-sectional shapes to be achieved. Therefore, in addition to the above-described procedure, when the cross-sectional shape 44, the reference point C, and the contour shape 31 are designated, the cross-sectional shape 44 is changed to all the reference shapes (lines / arcs) of the contour shape 31 by using the cross-sectional shape batch arrangement means. etc)
Is located at the midpoint. Therefore, a plurality of cross-sectional shapes can be quickly arranged on a contour shape by a simple operation procedure.

Next, a case where all the cross-sectional shapes 32 and 33 arranged in the contour shape 31 are deleted will be described with reference to FIGS. Section shape deletion command 2
1i, ie, by selecting the outline shape 31 on which the cross-sectional shapes 32 and 33 shown in FIG. 32 and 33 are deleted. FIG. 11 shows the state after the deletion.

As described above, the CAD /
In addition to the above-described means, the CAM system further specifies the reference shape in which the cross-sectional shape is arranged by the cross-sectional shape arranging means or the cross-sectional shape collective arranging means, so that the CAM system is arranged continuously to the reference shape. And a section shape deletion means which is achieved by a section shape deletion command 21i for deleting all the cross section shapes. Therefore, in addition to the above-described procedure, all the cross-sectional shapes arranged in the designated reference shape are deleted by using the cross-sectional shape deleting means. Therefore, a plurality of cross-sectional shapes can be quickly deleted by a simple operation procedure.

In the above-described embodiment, the present invention has been described with respect to the case where the 2.5-axis shape is defined. However, the present invention also applies to other shape definitions in the same relationship as the positional relationship between the cross-sectional shape and the contour shape. Can also be applied to the shapes in

[0045]

As described above, the CAD of claim 1 is used.
According to the / CAM system, the original shape defined on an arbitrary plane is defined by the shape defining means, and the reference position of the original shape on the reference shape and the relative position on the moved shape are determined by the sectional shape arranging means. when specified, the normal to the horizontal axis, the normal to the surface that can be from continuous shape to the reference shape in a coordinate system and the vertical axis on the placement plane formed with respect to the reference position on the plane of the reference shape The designated reference position and the relative position are moved so as to overlap. This eliminates the need for complicated movement amount calculation and rotation angle calculation for the cross-sectional shape movement arrangement, and greatly simplifies the operation procedure, thereby reducing the time required for arrangement and calculating the movement amount and rotation angle. In this case, it is possible to reduce the chance of a calculation error occurring at the time of (1).

According to the CAD / CAM system of the second aspect, the original shape defined on an arbitrary plane by the shape defining means is moved to the reference position on the reference shape of the original shape by the sectional shape arranging means and after the movement. When the relative position on the shape of
The horizontal axis is the normal to the reference position on the plane of the reference shape, and the vertical axis is the normal to the surface formed from the shape continuous to the reference shape. The reference position and the relative position are moved so as to overlap. The cross-sectional shape thus moved is rotationally moved by the cross-sectional shape vertical rotation means and the cross-sectional shape horizontal rotation means. This eliminates the need for complicated movement amount calculation and rotation angle calculation for the cross-sectional shape movement arrangement and rotation of the cross-sectional shape, and greatly simplifies the operation procedure. It is possible to reduce the chance of a calculation error occurring when calculating the rotation angle.

According to the CAD / CAM system of the third aspect, the original shape defined on an arbitrary plane by the shape defining means is moved to the reference position on the reference shape of the original shape by the sectional shape arranging means and after the movement. When the relative position on the shape of
The horizontal axis is the normal to the reference position on the plane of the reference shape, and the vertical axis is the normal to the surface formed from the shape continuous to the reference shape. The reference position and the relative position are moved so as to overlap. The cross-sectional shape thus moved is copied and moved by the cross-sectional shape copying means. This eliminates the need for complicated movement amount calculation and rotation angle calculation for the cross-sectional shape movement arrangement and cross-section shape copy, and greatly simplifies the operation procedure. It is possible to reduce the chance of a calculation error occurring when calculating the rotation angle.

According to the CAD / CAM system of the fourth aspect, the original shape defined on an arbitrary plane by the shape defining means is moved to the reference position on the reference shape of the original shape by the sectional shape arranging means and after the movement. When the relative position on the shape of
The horizontal axis is the normal to the reference position on the plane of the reference shape, and the vertical axis is the normal to the surface formed from the shape continuous to the reference shape. The reference position and the relative position are moved so as to overlap. The cross-sectional shape thus moved is moved by the cross-sectional shape moving means. This eliminates the need for complicated movement amount calculation and rotation angle calculation for the cross-sectional shape movement arrangement and cross-sectional shape movement, and greatly simplifies the operation procedure. It is possible to reduce the chance of a calculation error occurring when calculating the rotation angle.

According to the CAD / CAM system of the fifth aspect, the original shape defined on an arbitrary plane by the shape defining means is moved to the reference position on the reference shape of the original shape by the sectional shape arranging means and after the movement. When the relative position on the shape of
The horizontal axis is the normal to the reference position on the plane of the reference shape, and the vertical axis is the normal to the surface formed from the shape continuous to the reference shape. The reference position and the relative position are moved so as to overlap. The moved and arranged cross-sectional shapes are collectively arranged by the cross-sectional shape collective arrangement means. This eliminates the need for complicated movement amount calculation and rotation angle calculation for cross-sectional shape movement arrangement and cross-sectional shape batch arrangement, and greatly simplifies the operation procedure, thereby reducing the time required for arrangement and moving amount. And the chance of calculation errors occurring when calculating the rotation angle can be reduced. In particular, by using the sectional shape batch arrangement means, a plurality of identical sectional shapes can be arranged by simple designation, so that the operation time required for the arrangement can be drastically reduced.

According to the CAD / CAM system of the sixth aspect, the original shape defined on an arbitrary plane by the shape defining means is moved to the reference position on the reference shape of the original shape by the sectional shape arranging means and after the movement. When the relative position on the shape of
The horizontal axis is the normal to the reference position on the plane of the reference shape, and the vertical axis is the normal to the surface formed from the shape continuous to the reference shape. The reference position and the relative position are moved so as to overlap. The moved and arranged cross-sectional shapes are collectively arranged by the cross-sectional shape collective arrangement means. A plurality of these cross-sectional shapes arranged are deleted at once by the cross-sectional shape deletion means. This eliminates the need for complicated movement amount calculation, rotation angle calculation, and designation of a plurality of cross-sectional shapes for cross-sectional shape movement arrangement, cross-sectional shape batch arrangement, and cross-sectional shape deletion, thereby greatly simplifying the operation procedure, and thus necessitating the arrangement. The time can be reduced, and the chance of calculation errors occurring when calculating the moving amount and the rotation angle can be reduced. In particular, since a plurality of cross-sectional shapes can be deleted at once by using the cross-sectional shape deleting means,
The operation time required for deletion can be drastically reduced.

[Brief description of the drawings]

FIG. 1 is a CAD / CA according to an embodiment of the present invention.
1 is an overall configuration diagram of an M system.

FIG. 2 is a CAD / CA according to an embodiment of the present invention.
It is a flowchart which shows the procedure of M system.

FIG. 3 is a CAD / CA according to an embodiment of the present invention.
It is the figure which looked at the three-dimensional immediately after the outline shape and sectional shape definition of M system.

FIG. 4 is a CAD / CA according to one embodiment of the present invention.
It is the figure which looked at the cross-sectional shape arrangement | positioning and the cross-sectional shape copy of the M system three-dimensionally.

FIG. 5 is a CAD / CA according to an embodiment of the present invention.
It is explanatory drawing which shows the relationship between the tangent and the normal at the arrangement | positioning point on the reference | standard shape of M system.

FIG. 6 shows a CAD / CA according to an embodiment of the present invention.
It is explanatory drawing which shows a mode that the cross-sectional shape of M system rotates longitudinally.

FIG. 7 is a CAD / CA according to one embodiment of the present invention.
It is explanatory drawing which shows a mode that the cross-sectional shape of M system rotates sideways.

FIG. 8 is a CAD / CA according to an embodiment of the present invention.
It is explanatory drawing which shows a mode that the cross-sectional shape of M system moves.

FIG. 9 shows a CAD / CA according to an embodiment of the present invention.
It is explanatory drawing which defines the cross-sectional shape for sectional shape collective arrangement | positioning of M system.

FIG. 10 is a diagram showing a CAD / image according to an embodiment of the present invention.
It is the figure which looked at three-dimensionally immediately after the sectional shape batch arrangement of the CAM system.

FIG. 11 is a diagram showing a CAD / image according to an embodiment of the present invention.
It is a figure immediately after deletion of the section shape of a CAM system.

FIG. 12 is an overall configuration diagram of a conventional CAD / CAM system.

FIG. 13 is a flowchart showing a procedure of a conventional CAD / CAM system.

FIG. 14 is a finished diagram defined and created with a 2.5-axis shape in the CAD / CAM system according to the related art and one embodiment of the present invention.

FIG. 15 is a plan view of a CAD / CAM system according to the related art and one embodiment of the present invention immediately after shape definition.

FIG. 16 is a three-dimensional view immediately after the conventional shape definition.

FIG. 17 is an explanatory view following FIG. 16 showing a state in which the cross-sectional shape rotates around the X axis as the rotation axis.

FIG. 18 is an explanatory diagram subsequent to FIG. 17 showing a state in which a cross-sectional shape moves to an arrangement point.

FIG. 19 is an explanatory view subsequent to FIG. 18 and shows a state in which a section is rotated around a straight line parallel to the Z-axis as a rotation axis.

FIG. 20 is an explanatory view following FIG. 19, showing how a cross-sectional shape is arranged in a contour shape.

FIG. 21 is a diagram showing a cone.

FIG. 22 is an explanatory diagram showing the cone of FIG. 21 in a 2.5-axis shape.

FIG. 23 is a view showing the 2.5-axis shape in FIG.
It is an explanatory view showing the state seen from (axial direction).

FIG. 24 is a diagram illustrating a box-shaped solid.

FIG. 25 is an explanatory diagram showing a 2.5-axis shape of a box-shaped solid.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Central processing unit (CPU) 2 Main storage device 4 Bus 21 Command group 21 a Shape definition command 21 d Cross-sectional shape arrangement command 21 e Cross-sectional shape rotation command 21 f Cross-sectional shape copy command 21 g Cross-sectional shape movement command 21 h Cross-sectional shape batch arrangement command 21 i Cross-sectional shape deletion Command 22 Database 31, 34, 35 Contour shape 32, 33 Cross-sectional shape 37 Reference shape B, C Reference point P1, P2 Arrangement point

Claims (6)

(57) [Claims] 1. A CAD / CAM system for supporting a shape definition in which a solid in a three-dimensional space is represented by shapes of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of one or more reference shapes of a line, a circle, and an arc on an arbitrary plane in a three-dimensional space; and a shape defined on an arbitrary plane by the shape defining means. When a certain original shape is designated with a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; CA characterized by comprising:
D / CAM system. 2. A CAD / CAM system for supporting a shape definition in which a solid in a three-dimensional space is represented by the shape of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of one or more reference shapes of a line, a circle, and an arc on an arbitrary plane in a three-dimensional space; and a shape defined on an arbitrary plane by the shape defining means. When a certain original shape is designated with a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; A cross-sectional shape horizontal rotation means that passes the shape arranged by the cross-sectional shape arrangement means through a reference position and rotates 180 degrees around a vertical axis; and a horizontal axis that passes the shape arranged by the cross-sectional shape arrangement means through the reference position. And a vertical rotation means for a cross-sectional shape that rotates 180 degrees around the center of the CAD / CAM system. 3. A CAD / CAM for supporting a shape definition in which a solid in a three-dimensional space is represented by a shape of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of one or more reference shapes of a line, a circle, and an arc on an arbitrary plane in a three-dimensional space; and a shape defined on an arbitrary plane by the shape defining means. When a certain original shape is designated with a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; The cross-sectional shape arranged by the cross-sectional shape arranging means is designated.
The intersection of the cross-sectional shape and the reference shape together with the reference shape and the relative position is set as the reference position, the normal to the reference position of the reference shape is set as the horizontal axis, and the shape that passes through the reference position and is continuous with the reference shape. When the shape passing through the relative position of the cross-sectional shape on the coordinate system with the normal to the surface as the vertical axis is taken as the relative shape, the normal to the relative position of the relative shape is taken as the horizontal axis, passing through the relative position. A CAD / CAM system comprising: a cross-section shape copying unit for copying a coordinate on a coordinate system having a vertical axis as a normal to a surface formed from the shape continuous with the relative shape. 4. A CAD / CAM for supporting a shape definition in which a solid in a three-dimensional space is represented by shapes of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of one or more reference shapes of a line, a circle, and an arc on an arbitrary plane in a three-dimensional space; and a shape defined on an arbitrary plane by the shape defining means. When a certain original shape is designated with a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; The cross-sectional shape arranged by the cross-sectional shape arranging means is designated.
The intersection of the cross-sectional shape and the reference shape together with the reference shape and the relative position is set as the reference position, the normal to the reference position of the reference shape is set as the horizontal axis, and the shape that passes through the reference position and is continuous with the reference shape. When the shape passing through the relative position of the cross-sectional shape on the coordinate system with the normal to the surface as the vertical axis is taken as the relative shape, the normal to the relative position of the relative shape is taken as the horizontal axis, passing through the relative position. A CAD / CAM system comprising: a cross-sectional shape moving unit that moves on a coordinate system whose vertical axis is a normal to a surface formed from the shape continuous with the relative shape. 5. A CAD / CAM for supporting a shape definition in which a solid in a three-dimensional space is represented by a shape of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of one or more reference shapes of a line, a circle, and an arc on an arbitrary plane in a three-dimensional space; and a shape defined on an arbitrary plane by the shape defining means. When a certain original shape is designated with a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; When one or more of the original shape, the reference shape, and the reference position are specified, a cross-sectional shape is arranged on all the shapes continuous with the specified reference shape under the same conditions as the cross-sectional shape arranging means. A CAD / CAM system comprising: means for arranging cross-sectional shapes collectively. 6. CAD / CAM for supporting a shape definition in which a solid in a three-dimensional space is represented by shapes of a contour portion and a gradient portion.
In the system, a shape defining means for defining a shape composed of a reference shape such as a line, a circle, and an arc on an arbitrary plane in a three-dimensional space, and an element which is a shape defined on an arbitrary plane by the shape defining means. When the shape is designated as a reference position on the reference shape of the original shape and a relative position on the shape after the movement, a normal to the reference position on the plane of the reference shape is defined as a horizontal axis,
A cross-sectional shape arranging unit that moves so that the reference position and the relative position specified on an arranging plane configured by a coordinate system having a vertical axis with respect to a surface formed from a shape continuous from the reference shape are overlapped with each other; When one or more of the original shape, the reference shape, and the reference position are specified, a cross-sectional shape is arranged on all the shapes continuous with the specified reference shape under the same conditions as the cross-sectional shape arranging means. By specifying a reference shape in which the cross-sectional shape is arranged by the cross-sectional shape collective arrangement means and the cross-sectional shape arrangement means or the cross-sectional shape collective arrangement means, A CAD / CAM system comprising: a cross-sectional shape deleting unit for deleting a cross-sectional shape.