JP2002361636A - Method for creating three-dimensional mold cad data, mold cad data, three-dimensional mold blueprinting program and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure that the easy blueprinting of a molding die is performed. SOLUTION: Model data on a three-dimensional finished product comprising basic shape data on a three-dimensional mold corresponding to a finished product, element shape data Dc and attribute data thereof are read. Then the three- dimensional mold is split into nest shapes 21 and 22, each on the movable part side and the cavity side part side respectively, based on the model data on a three-dimensional finished product. Next, each of reverse shape data Dd, mechanical part shape data De and worked shape data Df corresponding to the element shape data Dc are arranged to at least either of the nest shapes 21 and 22 in accordance with a mounting reference and further, main mold pattern data Da are arranged to each of the nest shapes 21 and 22, of the movable part side and the cavity side part side, where the element shape data Dc are arranged. Besides, slide mechanism pattern data Db are arranged to each of the nest shapes 21 and 22, of the movable part side and the cavity side part side, where the element shape data Dc are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating three-dimensional mold CAD data for designing a mold, for example, a mold CAD apparatus, a three-dimensional mold design program,
The present invention relates to a storage medium storing the three-dimensional mold design program.

[0002]

2. Description of the Related Art In a three-dimensional design of a mold, a three-dimensional CAD (Computer Aided Design) device is used.
Using the drawing function of the 3D CAD software, etc., by the designer's dialogue input, for example, ribs for reinforcing strength, bosses for mounting parts, claws for fixing fitting parts, side holes, bolts according to the shape of the 3D product model Holes, square holes, slots,
A mechanical component shape for forming each element shape such as a notch and a gate shape is created, and an inverted shape of these element shapes is also created. Further, hole shapes for arranging these mechanical parts are also created using the drawing function of the three-dimensional CAD software.

[0003]

As described above, three-dimensional CA
Since the designer uses the D software's drawing function, etc., to create a mechanical part shape for forming each element shape such as a rib by interactive input of the designer, or to create an inverted shape of these element shapes, the mold Knowledge and know-how specific to mold design are required.

[0004] For this reason, it is very difficult for a beginner to design a mold. Further, as the shape of the three-dimensional product model becomes more complicated, the operation of the three-dimensional CAD device becomes more difficult, and it is necessary to become familiar with the three-dimensional CAD device. In addition, when the number of element shapes is large, it is very complicated to create a mechanical component shape.

Accordingly, the present invention provides a method for creating CAD data for a three-dimensional mold and a mold CAD apparatus capable of easily designing a mold, and a three-dimensional mold design program for operating the CAD apparatus. It is another object of the present invention to provide a storage medium storing the three-dimensional mold design program.

[0006]

According to a first aspect of the present invention, there is provided at least a basic shape data of a three-dimensional mold corresponding to a product;
Reading three-dimensional product model data comprising element shape data having various functions provided in the basic shape data and having an attachment reference and attribute data of the element shape data; and reading the three-dimensional metal model data from the three-dimensional product model data. A step of dividing the mold into a plurality of nests, and arranging inverted shape data, mechanical part shape data, and machining shape data corresponding to the element shape data with respect to at least one of the nested shapes in accordance with the mounting reference; And arranging the main mold pattern data of the three-dimensional mold with respect to the plurality of nests in which the element shape data is arranged. Arranging slide mechanism pattern data constituting a three-dimensional mold. It is the type CAD data creation method.

According to a second aspect of the present invention, in the three-dimensional mold CAD data creating method according to the first aspect of the present invention, the element shape data includes at least ribs, claws, bosses, various holes, slots, notches, and gate shapes. And any one of these element shape data is arranged in at least one of the plurality of nests.

[0008] In a third aspect of the present invention, in the three-dimensional mold CAD data creation method according to the first aspect, the basic shape data, the element shape data, the inverted shape data, the mechanical component shape data, and the machining. Shape data, the main pattern data and the slide mechanism pattern data,
It is characterized by comprising shape data having the mounting criteria and dimensional parameters and the attribute data having at least a name.

According to a fourth aspect of the present invention, there is provided a main mold pattern data of a three-dimensional mold corresponding to a product, and an attachment reference corresponding to element shape data having various attachment functions and an attachment reference provided in the three-dimensional mold. A mold CAD apparatus comprising inverted shape data, mechanical component shape data, and machined shape data.

A fifth aspect of the present invention provides a three-dimensional mold main mold pattern data corresponding to a product, slide mechanism pattern data constituting the three-dimensional mold, and various functions provided in the three-dimensional mold. A database in which element shape data having an attachment reference and its inverted shape data, mechanical part shape data, and processed shape data are stored, at least basic shape data of a three-dimensional mold corresponding to a product, and the element shape data Means for reading three-dimensional product model data comprising attribute data of the element shape data;
Means for dividing the three-dimensional mold into a plurality of nests from the three-dimensional product model data, and the inverted shape data corresponding to the element shape data stored in the database for at least one of the nests; Means for reading out the mechanical part shape data and the machined shape data and arranging them in accordance with the mounting reference, and storing in the database for each of the movable side and the fixed side nests where these element shape data are arranged Means for reading and arranging the main pattern data, and the slide mechanism pattern data stored in the database for each of the movable and fixed nests on which the element shape data is arranged. And a means for reading and arranging the mold.

A sixth aspect of the present invention is executed by reading by a computer, and includes at least basic shape data of a three-dimensional mold corresponding to a product, the element shape data and attribute data of the element shape data. The three-dimensional product model data is read out, the three-dimensional mold is divided into a plurality of nests from the three-dimensional product model data, and at least one of the nests has the inverted shape corresponding to the element shape data. Data, the mechanical component shape data, and the machining shape data are arranged in accordance with the mounting reference, respectively, and the main pattern data is applied to each of the movable side and the fixed side nests where these element shape data are arranged. The slide mechanism pattern is arranged for each of the movable side and the fixed side nests on which the element shape data is arranged. Is a three-dimensional mold design program, wherein the placement of data.

According to a seventh aspect of the present invention, there is provided a storage medium readable by a computer storing the three-dimensional mold design program according to the sixth aspect of the present invention.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of a mold CAD apparatus. The mold CAD device includes a computer 1, a keyboard 2, and a display 3. The computer 1 has a hard disk 4 on which a mold three-dimensional design program F is installed via a storage medium reading device or the Internet. The hard disk 4 has a function of reading three-dimensional product model data stored in the external file 5.

The three-dimensional product model data includes basic shape data of a three-dimensional mold corresponding to a product and, for example, ribs for reinforcing strength, bosses for mounting parts, and fitting parts according to the shape of the three-dimensional product model. It consists of element shape data such as fixing nails, side holes, bolt holes, square holes, slots, notches, gate shapes and the like, and attribute data such as names of the element shape data. However, the basic shape data of a three-dimensional mold is a product outer shape obtained by subtracting element shape data from a three-dimensional product model.

Further, the hard disk 4 is provided with a database device 6. The database device 6 includes main pattern data Da of a mold,
The slide mechanism component pattern data Db, element shape data Dc, inverted shape data Dd, mechanism component shape data De, processed shape data Df, and material shape data Dg are stored.

FIG. 2 is a schematic diagram of the main pattern data. The main pattern data Da is composed of shape data and attribute data. The shape data is based on the mounting criteria Q
₁ and dimension parameters D _{1 to} D ₁₅ , R ₁ to
It has an R _3. The attribute data is composed of, for example, a name.

The main pattern data Da includes a standard mold base and a custom mold base. Of these, the standard mold base stores a mold base determined in advance as a standard mold base.

As a custom-made mold base, a mold base having a shape close to the shape of a mold to be designed is selected from a plurality of mold bases, and the dimension parameter value of the selected mold base is changed. Is a custom-made mold base. Once this custom mold base is created, it can be registered as new data in the database 6.

FIG. 3 shows the slide mechanism part pattern data.
It is a schematic diagram. This slide mechanism part pattern data D
b is composed of shape data and attribute data. shape
The data is based on the mounting criteria Q₂And dimension parameters of main dimensions
TA D₁₆~ D₂₅, R₄~ R ₆have. Attribute data
The data is composed of, for example, a name and a number.

FIG. 4 is a schematic diagram of the element shape data. The element shape data Dc includes shape data and attribute data of the element shape. The element shapes are ribs and bosses for mounting components, claws for fixing fitting components, side holes, bolt holes, square holes, slots, cutouts, gate shapes, and the like as described above.

The shape data includes the dimensions of the mounting reference _{Q 3} and major dimension parameter _{D 27 ~D 29, R 7 ~R} 9. The attribute data includes, for example, a name and a number. The shape data shown in the figure is a boss (Boss).

As shown in FIG. 5, the name and number of at least one of inverted shape data, mechanical component shape data, and machined shape data are registered in the list of attribute data relating to the element shape.

FIG. 6 is a schematic diagram of the inverted shape data. The inverted shape data Dd is, for example, inverted shape data of the boss shown in FIG. 4 and includes shape data and attribute data of the element shape. Shape data includes a mounting reference _{Q 4} and dimensional parameters of the major dimension given by the variable type _{D 30 ~D 32, R 10 ~R} 12 corresponding to the mounting reference _{Q 3} included in the element shape data. Dimensional parameters _D 30 _{to D} of these major dimension _{32, R} 10 to R
_{Numeral 12} changes according to the dimensional parameters of the main dimensions of the corresponding element shape.

The attribute data includes, for example, a name and a number. The names and numbers of the attribute data match the names and numbers of the inverted shape data registered in the attribute data list for the element shapes shown in FIG.

FIG. 7 is a schematic diagram of the mechanical part shape data. The mechanical component shape data De includes shape data and attribute data of the element shape. Shape data have a size major dimension given in attached reference _{Q 5} and variable type parameter _{D 33 ~D 35, R 13,} R 14. Dimension parameters D _{33 to} D of these main dimensions
₃₅ , R ₁₃ , and R ₁₄ are variable according to dimensional parameters of main dimensions of the corresponding element shape.

The attribute data includes, for example, a name and a number. The names and numbers of the attribute data match the names and numbers of the inverted shape data registered in the attribute data list for the element shapes shown in FIG.

FIG. 8 is a schematic diagram of the processing shape data. This
The processing shape data Df of the
It consists of attribute data. The shape data is
Quasi-Q ₆And the dimension parameters of the main dimensions given in variable types
TA D₃₆~ D₃₉, R₃₅, R₁₆have. this
Parameter D of the main dimensions₃₆~ D₃₉, R₃₅,
R₁₆Is the dimension parameter of the main dimension of the corresponding element shape.
It is variable according to the parameters.

The attribute data includes, for example, a name and a number. The names and numbers of the attribute data match the names and numbers of the inverted shape data registered in the attribute data list for the element shapes shown in FIG.

The computer 1 executes the mold three-dimensional design program F stored in the hard disk 4 to read the data, the dividing means 8, the first arranging means 9, and the second arranging means. 10 and the third arrangement means 11.

The reading means 7 reads from the external file 5 at least three-dimensional product model data including the basic shape data of the three-dimensional mold corresponding to the product, the element shape data and the attribute data of the element shape data. have.

The dividing means 8 converts the three-dimensional mold into a first nested shape (movable side) 20 based on the three-dimensional product model data based on the material shape data Dg having the standard block size as shown in FIG. And second nesting shape (fixed side)
21 is provided.

The first arranging means 9 comprises inverted shape data Dd corresponding to element shape data Dc stored in the database 6 for at least one of the nested shapes 20 or 21 on the movable side or the fixed side; The data De and the processed shape data Df are read out, and the respective mounting criteria Q
₃ to Q ₆ in accordance with and has a function to place.

The second arranging means 10 stores the element shape data D
The main pattern data Da stored in the database 6 is read out for each of the movable side and fixed side nested shapes 20 and 21 on which the c, inverted shape data Dd, mechanical component shape data De, and processed shape data Df are arranged. It has a function to arrange.

The third arranging means 11 outputs the element shape data D
The slide mechanism pattern data Db stored in the database 6 is read for each of the movable side and fixed side nested shapes 20 and 21 on which the c, inverted shape data Dd, mechanical component shape data De, and machining shape data Df are arranged. It has a function to arrange.

Next, a method of three-dimensionally designing a mold using the apparatus configured as described above is shown in FIG.
The description will be given according to the dimension design flowchart.

First, in the initial value input process of step # 1, the designer operates the keyboard 2 in an interactive manner to obtain the block size, the shrinkage ratio and shrinkage reference point of the resin used for the mold, and the main mold pattern. , Input the slide mechanism pattern.

The block size designates vertical, horizontal, and height dimension values.

The shrinkage of the resin is used to correct shrinkage of the product shape in consideration of shrinkage during molding. In order to give the contraction rate, first, a reference point of contraction is specified, and thereafter, a magnification is input. At this time, in the case where enlargement / reduction is performed at the same magnification in both the XYZ directions, the user inputs a magnification by designating a uniform value from a menu item displayed on the display 3. If the magnification to be expanded / contracted is different in the XYZ directions, a non-uniform value is designated from the menu and the magnification in each of the XYZ directions is set to the X component.
Input is made in the form of Y component and Z component.

The master pattern and the slide mechanism pattern are selected and designated from menu items displayed on the display 3 respectively. At this time, the slide mechanism pattern specifies the arrangement direction and the number.

Next, in the material shape data creation process of step # 2, the designer interactively enters the keyboard 2
To read the material shape data Dg from the database 6, set the block size input in step # 1, and place it on the workspace. At this time, the direction is specified for the material shape based on the basic shape data for the product (for example, if the material shape is a rectangular parallelepiped, 3
It is preferable to specify the XYZ directions with respect to the axis), so that the first and second nesting shapes (movable side, drive side) are uniquely determined (for example, plus along the Z axis direction). The direction may be a first nested shape, and the minus direction may be a second nested shape.

It is to be noted that the set block size can be modified as needed, and the dimension after modification can be rewritten as new material shape data.

Next, in the product model reading process of step # 3, the designer interactively enters the keyboard 2
To read the three-dimensional product model data stored in the external file 5 by the reading means 7.

The three-dimensional product model data includes a basic shape that forms the three-dimensional product model, shape data of an element shape, and attribute data indicating an attribute unique to the shape data. Further, the three-dimensional product model data has a list of attribute data relating to element shapes shown in FIG.

When the three-dimensional product model data is read, the computer 1 adds the resin shrinkage entered in the above step # 1 to the entire three-dimensional product model data, and corrects the shape of the three-dimensional product model. .

Next, in the mold basic shape creation step of step # 4, the designer operates the keyboard 2 in an interactive manner to transfer the corrected three-dimensional product model data to the material shape arranged on the workspace. Arrange to match any position in

Thereafter, the dividing means 8 of the computer 1
An operation is performed to subtract a part corresponding to the basic shape part of the three-dimensional product model from the material shape. Then, the dividing means 8 sets a parting line and a parting surface of the three-dimensional product model, and based on the parting line and the parting surface, nests on the movable side as shown in FIGS. The shape is divided into a shape 20 and a nested shape 21 on the fixed side.

Next, in the inverted shape arranging step of step # 5, the computer 1 reads a list of attribute data relating to element shapes shown in FIG. The first positioning means 9 of the computer 1 reads a reverse shape data Dd indicating the list of the attribute data about an element shape element shape data in FIG. 6 corresponding to the example bosses, and fit to the mounting reference Q _4, Further, the dimension value of the inverted shape data Dd is changed in accordance with the dimension value of the element shape data, and is arranged on the movable side or fixed side nested shape 20 or 21 shown in FIGS. FIG. 12 shows inverted shape data D.
It is the figure which arranged and merged d on the fixed side nest shape 21.

Next, in the mechanical component arranging step of step # 6, the computer 1 reads a list of attribute data relating to element shapes shown in FIG. The first positioning means 9 of the computer 1 reads a mechanism part shape data De shown in FIG. 7 corresponding from a list of attribute data about an element shape element shape data, and fit the mounting reference Q _5, further elements The dimensional value of the mechanical component shape data De is changed according to the dimensional value of the shape data, arranged on the movable or fixed nested shape 20 or 21 shown in FIGS. 11A and 11B, and merged. FIG. 13 is a diagram in which the mechanical component shape data De is arranged on the nested shape 21 on the fixed side.

Next, the machining shape arranging process of Step # 7 is performed.
Here, the computer 1 relates to the element shape shown in FIG.
Read the list of attribute data to be read. And the computer
The first arrangement means 9 of the data 1
8 corresponding to the element shape data from the data list.
Read the machining shape data Df, and set its attachment criteria Q ₆
To the dimension value of the element shape data.
Then, the dimension value of the processing shape data Df is changed, and FIG.
(b) nested shape 20 or 21 on the movable or fixed side
Place on top and cut out. Fig. 14 shows the machining shape data.
FIG. 14 is a diagram in which the tab Df is arranged on the fixed side
You.

Next, in the mold base forming step of step # 8, the second placement means 10 of the computer 1
Reads the main pattern data Da (standard mold base or custom mold base) shown in FIG. 2 from the database 6 in accordance with the block size and main pattern input in the initial value input step of the above step # 1. The main pattern data Da is arranged on the work space in conformity with the movable side nesting shape 20 and the fixed side nesting shape 21 created in the mold base shape creation step of step # 4.

Further, the movable side mold plate and the fixed side mold plate are cut out according to the dimensions of the movable side nesting shape 20 and the fixed side nesting shape 21, and the movable side nesting is performed. Shape 20 and nested shape 2 on the fixed side
1 is created.

Next, in the slide mechanism creation step of step # 9, the third arranging means 11 of the computer 1
The slide mechanism pattern data Db stored in the database 6 is read in accordance with the slide mechanism pattern input in the initial value input step of step # 1, and the block size and main pattern data input in the initial value input step are read. The dimensional values of the dimensional parameters of the main dimensions are varied in accordance with the dimensional value of Da, and the mechanical part shape data created in the mechanical part arranging step of step # 6 and the mold basic shape creating step of step # 4 are created. Nesting shape 20 on the movable side and nesting shape 21 on the fixed side
Place it on the workspace according to the mounting standard of.

Next, in the assembling process of step # 10, the computer 1 merges the inverted shapes corresponding to the element shapes in the inverted shape arranging process of step # 5, and performs the machining shape arranging process of step # 7. The movable-side nesting shape 20 and the fixed-side nesting shape 21 created in the mold base shape creation step of step # 4 cut out with the processed shape, and the mechanical parts created in the mechanical part placement step of step # 6 above. The shape data De, the main pattern data Da created in the mold base creation step in step # 8, and the slide mechanism pattern data Db created in the slide mechanism creation step in step # 9 are assembled.
FIG. 15 is a view showing the assembled mold.

As described above, in one embodiment,
The 3D product model data including the basic shape data of the 3D mold corresponding to the product, the element shape data, and the attribute data of the element shape data is read, and the 3D mold is moved from the 3D product model data to the movable side. And the nested shapes 21 and 22 on the movable side and the fixed side, and the inverted shape data Dd and the mechanical part shape data De corresponding to the element shape data Dc for at least one of the nested shapes 21 or 22 on the movable side or the fixed side And the main shape pattern data Da are arranged for the nested shapes 21 and 22 on the movable side and the fixed side on which the element shape data are arranged, respectively. Nested shapes 21 and 22 on the movable side and the fixed side where
Since the slide mechanism pattern data Db is arranged, the mechanism part shape for forming each element shape such as the rib by the interactive input of the designer using the drawing function of the three-dimensional CAD software or the like as in the conventional case. Even if you do not have knowledge and know-how specific to the design of molds that create or create inverted shapes of these element shapes, and are not familiar with 3D CAD equipment, molds can be easily and automatically created. Can be designed.

It should be noted that the present invention is not limited to the above-described embodiment, and that various modifications can be made in the implementation stage without departing from the scope of the invention.

Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the problem described in the column of the effect of the invention can be solved. In the case where the effect is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

For example, tool information having a tool type and a tool diameter, and machining information having a machining condition and a machining type may be added to the list of attribute data relating to the element shape shown in FIG. 5 as machining data. Thereby, automation of NC data creation for each of the nested shapes 21 and 22 on the movable side and the fixed side can be applied. By performing this processing in the mold die three-dimensional design program F, a mold die three-dimensional model is completed, and NC data is created, so that man-hours and work time can be reduced.

If measurement information including tolerance information, a measurement location and a measurement method is added as measurement data, automatic measurement of a mold part and a molded product of a three-dimensional product model becomes possible, and the measurement time can be reduced. Further, in the processing and assembling process, the influence of the reading error of the tolerance can be minimized.

By adding material data, the creation of a purchase list can be automated, and the purchase process can be accelerated and mistakes can be avoided.

[0061]

As described above in detail, according to the present invention, a three-dimensional mold CAD data creating method and a mold CAD apparatus capable of easily designing a mold, and operation of the mold CAD apparatus. And a storage medium storing the three-dimensional mold design program.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a mold CAD apparatus according to the present invention.

FIG. 2 is a schematic diagram of main pattern data in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 3 is a schematic diagram of slide mechanism component pattern data in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 4 is a schematic diagram of element shape data in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 5 is a schematic view showing a list of attribute data relating to an element shape in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 6 is a schematic diagram of inverted shape data in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 7 is a schematic diagram of mechanical component shape data in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 8 is a schematic diagram of processing shape data in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 9 is a schematic diagram of material shape data in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 10 is a flowchart of a three-dimensional design in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 11 is a diagram showing a movable-side nested shape and a fixed-side nested shape divided into two in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 12 is a view showing a state in which inverted shape data is arranged on a fixed-side nested shape and merged in one embodiment of the mold CAD apparatus according to the present invention.

FIG. 13 is a view showing a state in which mechanical component shape data is arranged on a fixed-side nested shape in one embodiment of a mold CAD apparatus according to the present invention.

FIG. 14 is a view showing a state in which processing shape data in a mold CAD apparatus according to an embodiment of the present invention is arranged on a fixed nested shape and cut out.

FIG. 15 is a view showing an assembled mold in one embodiment of the mold CAD apparatus according to the present invention.

[Explanation of symbols]

 1: computer 2: keyboard 3: display 4: hard disk 5: external file 6: database device 7: reading unit 8: dividing unit 9: first arranging unit 10: second arranging unit 11: third arranging unit 20 : Nested shape on movable side 21: Nested shape on fixed side

Claims (7)

[Claims] At least the basic shape data of a three-dimensional mold corresponding to a product, element shape data having various functions provided in the basic shape data and having an attachment reference, and attribute data of the element shape data. Reading the three-dimensional product model data; dividing the three-dimensional mold into a plurality of nests from the three-dimensional product model data; corresponding to the element shape data for at least one of the nested shapes Arranging inverted shape data, mechanical part shape data, and machined shape data according to the mounting reference, respectively, and the main mold pattern data of the three-dimensional mold with respect to the plurality of nests in which these element shape data are arranged. And arranging the three-dimensional mold for each nested shape in which the element shape data is arranged. 3D mold CAD data generating method characterized by comprising the steps of: placing a ride mechanism pattern data. 2. The element shape data is at least ribs, claws, bosses, various holes, slots, notches, and gate shapes, and any one of these element shape data is included in at least one of the plurality of nests. 2. The method for creating CAD data of three-dimensional mold according to claim 1, wherein the CAD data is arranged. 3. The basic shape data, the element shape data, the inverted shape data, the mechanical component shape data, the processed shape data, the main pattern data, and the slide mechanism pattern data are respectively based on the mounting reference and 2. The method according to claim 1, comprising: shape data having a dimension parameter; and the attribute data having at least a name. 4. A main mold pattern data of a three-dimensional mold corresponding to a product; inverted shape data having an attachment reference corresponding to element shape data having various functions provided in the three-dimensional mold and having an attachment reference; A mold CAD apparatus comprising mechanical part shape data and machining shape data. 5. A three-dimensional mold main mold pattern data corresponding to a product, a slide mechanism pattern data constituting the three-dimensional mold, and various functions provided in the three-dimensional mold and having an attachment reference. A database in which element shape data and its inverted shape data, mechanical component shape data, and processed shape data are stored; at least, basic shape data of a three-dimensional mold corresponding to a product; the element shape data and the element shape data Means for reading three-dimensional product model data consisting of attribute data of: a means for dividing the three-dimensional mold into a plurality of nests from the three-dimensional product model data; and at least one of these nests in the database. The inverted shape data, the mechanical component shape data, and the processed shape data corresponding to the stored element shape data. Means for reading out the data and arranging them in accordance with the mounting reference; and for the nests on the movable side and the fixed side on which these element shape data are arranged, the main pattern data stored in the database is stored. Means for reading and arranging; and means for reading and arranging the slide mechanism pattern data stored in the database for each of the movable and fixed nests on which the element shape data is arranged. A mold CAD apparatus characterized in that: 6. A three-dimensional product model which is executed by reading by a computer and includes at least basic shape data of a three-dimensional mold corresponding to a product, said element shape data and attribute data of said element shape data. Data from the 3D product model data.
The two-dimensional mold is divided into a plurality of nests, and the inversion shape data, the mechanical component shape data, and the machining shape data corresponding to the element shape data are obtained for at least one of the nests according to the mounting reference. The main pattern data is arranged for each of the nests on the movable side and the fixed side on which the element shape data is arranged, and each of the movable side and the fixed side on which the element shape data is arranged. A three-dimensional mold design program for arranging the slide mechanism pattern data in a nest. 7. A storage medium readable by a computer storing the three-dimensional mold design program according to claim 6.