JPS63165971A - Metallic mold designing device - Google Patents

Abstract

PURPOSE:To shorten designing job period of a metallic mold by carrying out consistently such jobs for production of a product model, a metallic mold, a 3-sided drawing, etc. CONSTITUTION:A metallic mold is designed in the following processes A-H. That is, a process drawing is produced in the form of a 2-dimensional drawing by means of a video display device in a preparatory designing process A. Then a 3-dimensional product solid model is produced together with a parting line set in a product model production process B. A metallic mold piece model is produced with the interference checked between the metallic mold piece models in a metallic mold model production process C. A cross sectional drawing production model is produced and preserved for the pieces needed for a sectional drawing in a section production process D. Then a detailed form of the metallic model model is added in an attribute adding process E and the designed metallic model is changed into a 3-sided drawing in a 3-sided drawing production process F. Then a process sheet where the processing information are collected is outputted in a process sheet production process G and finally a development of the metallic mold model is produced in a development production process H.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to a mold design device for designing a mold for a product.

(Prior art) Conventionally, in mold design using a three-dimensional solid model, a product model is created and a mold model is created.

Work such as creating three-view drawings was done independently and could not be done consistently in an orderly manner.

Therefore, there are disadvantages in that complicated operations are involved until the mold design is completed, which is time-consuming and time-consuming.

Chamfering, etc.) could not be supported.

[Purpose of the invention]

The purpose of the present invention is to eliminate the drawbacks of the above-mentioned prior art, and it is possible to perform mold design work consistently, and furthermore, when creating a mold model using a three-dimensional solid model, surface,
The present invention provides a mold design device that can add detailed shapes to two lines.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIG. 1 is a system block diagram showing an embodiment of the present invention, FIG. 2 is a hardware configuration diagram showing an embodiment of the present invention, and FIG. 3 is a video display device 5 shown in FIGS. 1 and 2. It is a figure showing an example.

In FIGS. 1 and 2, 1 is a main processor that performs all control in mold design; 2.3 is a magnetic tape and magnetic disk device; a three-dimensional solid model of a product model; a mold piece model to be created; It stores information such as the three-view diagram of the y8 model. 4 is a video display device for displaying two-dimensional data such as a three-dimensional view, 5 is a video display device for displaying three-dimensional data such as a solid model, and the display device 8 shown in FIG. Keyboard 9. It consists of a lever 10° for rotating and moving the solid model, a lever 11° for inputting model position and commands, and an auxiliary function keyboard 12.

6 is a plotter for drawing drawings of the created piece models, and 7 is a printing device.

The mold design steps in this example are roughly divided into 8 steps (AN) (as shown in Fig. 4), including pre-design preparation A, creation of a three-dimensional product solid model, and parting line (PL). Create a product model to be set, create a mold piece model, and check for interference between mold piece models.Mold model creation.C1 Cross section creation to create and save a model for creating a cross-sectional view for the pieces that require a cross-sectional view. Attribute addition E for adding detailed shapes (hereinafter referred to as attributes) of the mold model;
Three-view drawing F that creates a three-view drawing of the designed mold model, Process sheet creation G that outputs a process sheet that summarizes processing information used during processing, and Development diagram creation H that creates a development diagram of the mold model. be.

5 to 8 show details of each step (A to H), and these will be explained below.

In pre-design preparation A, first, a process diagram of the product is created in a two-dimensional drawing using the video display device 4. When it is determined in step S2 that the creation of the process diagram has been completed, attributes to be added to the mold solid model are organized based on the created process diagram.

Note that the attributes will be explained in detail in attribute addition E. After arranging the attributes, the operator inputs commands such as shrinkage rate, center basket difference exchange, etc.

Based on this input, the main processor 1, in step S8, converts the process diagram created based on the shrinkage rate and center tolerance deviation that occur when the product is taken out from the mold, and converts the dimensions.

Next, referring also to FIG. 9, step SIO to step Sta
I will explain about it.

In step S10, a three-dimensional product basic solid model is created based on the two-dimensional product figure. Note that no attributes are added to the product basic solid model. Then, in step 512, the product model created here is stored in the storage device as three-dimensional data, that is, (X, y*z) data. This is to preserve the original model since the product model will be divided after this step.

Next, in step S14, it is determined whether the parting line (PL) determined by the operator has been input. The parting line is used when creating mold pieces and serves as a standard for determining where to divide the product model.

Once the parting line is input, the process advances to step S16. In step 316, the input parting line is added to the product model.

Once the parting line is added, the process proceeds to step S18, where the surface of the product model is divided based on the parting line, and a mold model (piece) is created using the surface.

In step S20, the created mold model is stored in a storage device as three-dimensional data.

Note that steps 318 to 320 are repeated for the number of pieces, that is, until it is determined in step S22 that all pieces have been created.

Next, an interference check command is input by the operator, and when the input is determined in step S28, the process proceeds to step S30, and the created mold is checked for interference. Interference checks include static checks to check for "bites" and "gaps" when products and pieces are assembled, dynamic checks to check for slight gaps when the mold is moved, and checks to check for gaps between adjacent pieces. Attribute check 3 to check the consistency of attributes
In step S30, two checks are performed: a static check and a dynamic check.

The attribute check is performed after the attribute addition in step S46.

In addition, each check is based on the three-dimensional data of the product and piece (x
, y, z). For example, when performing a static check, if a product and a piece (mold model) are assembled and "bite-in" (the product and piece or pieces collide with each other) occurs, the respective data will be updated to correct this. Calculate while comparing (x, y, z). Then, the mold model (piece) is corrected in step 53'2 based on the result of the interference check, and when it is determined that the interference check command is finished in step S34, step S
Proceed to step 36 and save the corrected mold model in the storage device again.

Step S40. Step S42 is for creating a model for creating a cross-sectional view and saving the model, and is performed when creating a cross-sectional view is selected in step S3B. In this example, a three-dimensional solid model is used for the products/pieces, so any cross-sectional view can be displayed.In this step, as a preliminary step, a model for creating a cross-sectional view is created for the products/pieces that require a diagram. It is something to preserve.

Furthermore, in this embodiment, it is possible to add the detailed shape or attribute to one point of a surface or line of the mold model. When adding attributes, if it is necessary to add attributes to a part of a solid surface, a part of an edge line, etc., a separate line is added to the solid model as a preliminary preparation. In addition, multiple attributes can be displayed in the same image.

It can also be added to a single point on a line.

If it is determined in step S44 that the above-mentioned preliminary preparation has been completed, the process proceeds to step S46, where attributes are added based on the operator's input. Items that are subject to attribute addition include:
Surface slope, fillet, chamfer, screw, shading line, gear,
There is a keyboard 9. Add using Ben 11.

FIG. 10(a) shows an example in which a surface slope is added. This is done by displaying a piece on the display, selecting the slope of the surface of the piece using the keyboard 9, and specifying the surface using the bevel 11.

After adding attributes in step S46, consistency of attributes is checked in step 348 for adjacent pieces.

This is done by adding attributes to the piece's data (x,
Since the contents of y, z) change, this is done to ensure consistency with other surrounding pieces. □′ Also, in this step, you can specify a piece and restore all the attributes added, so you can check the presence or absence of attributes or check for omissions.

It is also easy to check for duplicates, etc.

Based on the attribute check in the next step 348, attributes are modified (added, deleted) in step S50, and the completed mold model is saved in step S52.

Incidentally, steps 346 to S52 are repeated for the number of pieces.

If the operator selects to create an NC tape, the process proceeds to step S58, where an NC tape for the machine tool used when actually creating a mold model is created.

Step S60 and subsequent steps are for creating a two-dimensional drawing. First, in step S60, it is determined whether a command indicating the projection direction when converting the solid model into a two-dimensional drawing has been input, and if the command is input, the step Proceed to S62.

Then, in step S62, the three-dimensional solid model is converted into two-dimensional data based on the input projection direction command. In step S64, a projection direction necessary for converting one piece into a three-view drawing is selected, and an original drawing of the three-view drawing is created. Next, the opening frame of the drawing is set in step 368, and once the opening frame is set, three views are created in step 370.

Attribute information added to the pieces can be attached to the three-view diagram, and, for example, slope information can be displayed as shown in FIG. 10(b) (the figure is one of the three-view diagrams). Step S7
2 is a drawing that takes attributes into consideration.

For example, dimensions and notes are added to modify the drawing.

Incidentally, the symbol ■ in FIG. 10(c) indicates that the gradient attribute is added. Next, as shown in FIG. 10(d), the attribute information added to the drawing is deleted in step S74, and the drawing is saved in step S76.

Incidentally, steps S64 to S76 are repeated for the number of pieces.

Further, the model for creating the cross section stored in step S42 can be attached to the three-view diagram created here.

In step S80, a process sheet is created. The process sheet includes, for example, hole positions.

Processing information such as hole shape is compiled and used during processing.

Also, since the three-view diagram mentioned above is drawn using a projection method, if you want to display information on the placement of major notches, cams, screws, etc. on the cylinder,
In step S86, a developed view is created and displayed.

In this way, according to this embodiment, the mold design period can be shortened by performing the mold design work in an orderly and consistent manner.
The mold manufacturing period can also be shortened by using the C-tape process sheet.

Furthermore, by inputting the attribute addition of the mold model, the attribute information can be easily visualized graphically.

〔Effect of the invention〕

As explained above, by using the present invention, it is possible to perform mold design work consistently, and furthermore, the detailed shape (attributes) can be added when creating a mold model. be.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a hardware configuration diagram showing an embodiment of the invention, Fig. 3 is a diagram showing a video display device, and Figs. FIG. 8 is a diagram showing the procedure of the example, FIG. 9 is a diagram showing the flow of piece creation, and FIG. 10 is a diagram showing the drawing of the mold model. In the figure, 1 is a main processor, 2 is a magnetic tape device, 3 is a magnetic disk device, and 4.5 is a video display device.

Claims (2)

[Claims] (1) means for creating a three-dimensional solid model from two-dimensional drawing data representing a product model; means for creating several mold models based on the three-dimensional solid model; A mold design device comprising means for checking interference between mold models and correcting the mold models, and means for adding detailed shape data such as gradients and chamfers to the mold models. (2) A mold design device according to claim 1, which is capable of displaying a three-dimensional solid model of a product and a cross-sectional shape of a mold model.