JPS6333189B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a CAD (Computer Aided Design) system having a graphic data meaning table.

[Conventional technology and problems]

A CAD system is a system that uses a display device to perform drafting work interactively, but in current CAD systems, the logical meaning of graphic data can only be recognized within the program. Therefore, all processes requiring logical meaning of figures had to be performed by creating separate programs.

[Purpose of the invention]

The present invention is based on the above considerations, and includes:
The purpose of the present invention is to provide a CAD system that can universally assign meaning to graphic data by creating a table.

[Structure of the invention]

Therefore, the CAD system of the present invention
Parts library 1 that stores symbol information of shapes
2, a figure database 11 that stores figures and drawings, and a model structure table file 13 that stores information on a plurality of model structure definition tables and information on figure DB/business DB interface tables.
a business database 15 that stores information such as parts prices and parts inventory, and a model structure definition table 2 that includes a model definition section 26, a drawing definition section 27, and a figure definition section 28.
4. Graphic DB/Business DB that associates graphic database keys with business database keys.
a graphic data meaningful table 22 consisting of an interface table 25; a graphic database access means 20 for accessing the graphic database 11 and the parts library 12 based on the data in the graphic data meaningful table 22; and a graphic data meaningful table 22. a business database access means 23 that accesses the business database 15 based on the data of 22; a table file access means 19 that controls data transfer between the model structure definition table file 13 and the graphic data semantic table 22; The model definition section 26 stores model information that specifies the product, drawing type information that specifies the drawing used when creating the product, and inter-drawing information that indicates the relationship between the drawings. The drawing definition section 27 stores drawing information for specifying drawings, drawing type information for specifying figures included in the drawings, and inter-figure information for indicating relationships between figures, and the figure definition section 28 stores: , graphic information specifying a graphic and graphic information indicating a relationship between the graphics are stored.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram for explaining the model structure in the present invention, FIG. 2 is a diagram for explaining the outline of one embodiment of the CAD system of the present invention, and FIG. 3 is a diagram for explaining the graphic data meaning table in the present invention. It is.

In Figure 1, 10 is a model and 11 is a figure.
DB and 12 each indicate a component library. Note that DB means database. When making one product, multiple drawings are required, and a collection of drawings for one product is called a model. In the example of FIG. 1, the model 10 is composed of drawings 1, 2...n. In drawing n, a figure 1, a figure 2, a figure 3, and a figure symbol are drawn. The figure DB 11 stores various figure information and drawing information, and the parts library 12
stores various graphic symbol information.

FIG. 2 is a diagram showing an overview of the CAD system of the present invention, and FIG. 3 is a diagram explaining a graphic data meaning table in the present invention. Figures 2 and 3
In the figure, 13 is a model structure definition table file, 14 is a user application, 15 is a business DB, 16 is a display work file, 17
18 is a graphics display, 18 is a graphics input device, 19 is a table file access routine, 20 is a graphic DB access routine, and 21 is a display work file.
access routine, 22 is a graphic data meaning table, 23 is a business DB access routine,
24 is a model structure definition table, 25 is a figure
DB/Business DB interface table, 26
is a model definition section, 27 is a drawing definition section, 28 is a figure definition section, 29 is a figure DB key index section,
30 is a business DB key/index section, 31 is a graphic DB key/business DB key correspondence table, and 32 is interface table control information.

The model structure definition table file 13 stores a plurality of model structure tables and graphic DB/business DB interface tables. The user application 14 includes a table file access routine 19, a graphic DB access routine 20, a display work file access routine 21, a graphic data meaning table 22, and a business DB access routine 23.
It includes various controls for CAD. The table file access routine 19 is for accessing the model structure definition table file 13, and is for accessing the model structure definition table file 13.
The access routine 20 is for accessing the figure DB 11 and the parts library 12.
Display work file access routine 2
1 is for accessing the display work file 16. The figure data meaning table 22 includes the model structure definition table 24 and the figure data meaning table 22.
It has a DB/business DB interface table 25. Business DB access routine 23
is for accessing the business DB 15. The business DB 15 stores information such as parts prices and parts inventory. Display work・
The file 16 contains graphic information read from the graphic DB 11, graphic symbol information read from the parts library 12, and the graphic display 1.
Information regarding the drawing currently displayed on the screen of 7 is stored. The graphic display 17 is for displaying figures, and the graphic input device 18 is for inputting figures and various control information. As the graphics input device 18, a tablet, light pen, or joystick can be used.

The graphic data meaning table 22 has a model structure definition table 24 and a graphic DB/business DB interface table 25. The model structure definition table 24 includes a model definition section 26, a drawing definition section 27, and a figure definition section 28. The model definition section 26 has model information, drawing type information, inter-drawing information, and user-defined information. Model information consists of model type and attributes. Model type indicates the type of product.
The attribute indicates the model name of the model belonging to the product type. The drawing type information indicates the name of the drawing used to make the product. The inter-drawing information indicates the relationship (adjacency, inclusion, hierarchy, logical connection, group) between drawings. The drawing definition section 27 includes drawing information, figure type information, and figure related information. The drawing information consists of a drawing name and attributes. This attribute represents the attribute of the product part shown in the drawing, such as color. The figure type information indicates the name of the figure used in the drawing. The graphic relationship information indicates the relationship between each graphic. The graphic definition section 28 has graphic information and graphic related information. The graphic information consists of a graphic name and attributes. The attribute indicates, for example, the size of a figure. The graphic relationship information indicates relationships between graphics (adjacency, inclusion, hierarchy, logical connection, group). The model definition section 26 and the drawing definition section 27 are associated with each other by a drawing name, and the drawing definition section 27 and the figure definition section 28 are associated with each other by a figure name. shapes
The DB key/index section 29 is used when accessing the drawing DB key/business DB key correspondence table 31 using the graphic DB key as a key.
is drawing DB key/business DB key correspondence table 3
1 is used when accessing using the business DB key as a key. Graphic DB key/business
The DB key correspondence table 31 has multiple entries E, and each entry E has mutually related figures.
The DB key and business DB key are entered. shapes
A DB key is, for example, a drawing name or figure name, and
The DB key is the model number of the product or part. The interface table control information 32 contains the graphic DB
It includes information indicating the number of parts registered in the business DB interface table 25, free space information, etc.

The system of FIG. 2 operates, for example, as follows. When an operator wishes to create a similar design for a certain product, the operator inputs the model type, model name, and drawing name from the graphics input device 18. Then, the user application 14 downloads the model structure definition table and figure specified from the model structure definition table file 13.
The DB/business DB interface table is taken out and set in the graphic data meaning table 22. Then, by referring to the model definition section 26 of the model structure definition table 24, the specified drawing is retrieved from the graphic DB 11, and this drawing is displayed on the graphic display 17. If the specified drawing is not stored in the figure DB 11, the user application 14 refers to the drawing definition section 27 and the figure definition section 28, and stores related figures in the figure DB 11 and the parts library 1.
2 to create a specified drawing and display it on the screen of the graphic display 17. The operator looks at the drawing displayed on the screen of the graphic display 17 and makes a similar design. Graphic display 17
When the similar design on the screen is completed, necessary information is added to the model structure definition section 22, and the similar design drawing on the screen is registered in the graphic DB 11 as necessary.

A specific example is shown below. Here, we will take a similar design of a medicine can as an example. The design involves searching for blueprints for medicine cans that have already been designed, making the shape of the knob on the lid of the medicine can larger, and changing the material from plastic to wood.

First, the operator inputs the model type "Medicine Can", the model name "Small Medicine Can", and the drawing name "Knob".
The application program 14 extracts the information of the model structure definition table specified by the model type "Medicine can" and the model name "Small medicine can" from the model structure definition table file 13, and stores it in the model structure definition table 24. Store. At the same time,
Information on the corresponding graphic DB/business DB interface table is also extracted from the model structure definition table file 13 and stored in the graphic DB/business DB interface table 25. Since the specified drawing name is "knob", the drawing DB 11 is searched based on the contents of the drawing definition section of "knob", and the searched drawing is displayed on the display 17. At this time, if the specified "knob" drawing does not exist, the "knobs" as a part is searched for from the parts library 12 based on the data in the drawing definition section, and a "knob" drawing is created. do.
Next, the operator changes the shape of the "knob" displayed on the screen. Also, when the material is changed from plastic to wood, the drawing definition section is changed. When the modification of the drawing is completed, if the user wants to register a new model medicine can, input the new model name "wooden knob medicine can" and register it in the figure DB 11.

When the operator wishes to calculate the cost of a certain product, the operator uses the graphic input device 18 to instruct that he wishes to perform cost calculation, and also inputs the model type and model name. Then, the user application 14 refers to the corresponding model structure definition table 24 to retrieve the graphic DB keys related to cost accounting, refers to the graphic DB/business DB interface table 25, and retrieves these graphic DB keys. The corresponding business DB keys are found, the business DB 15 is read based on these business DB keys, the cost of each part is found, and the cost of each part is totaled to calculate the cost of the product.

Here, a specific example will be shown using a medicine can as before. The operator inputs the model type "medicine can" and the model name "wooden knob medicine can." Then, the application program 14 specifies the model type and model name, retrieves the corresponding model structure definition table information from the model structure definition table file 13, and stores it in the model structure definition table 24. Also, at this time, the figures stored in the model structure definition table file 13
Information on the DB/business DB interface table is also retrieved at the same time and stored in the graphic DB/business DB interface table 25. Next, the application program 14 refers to the figure DB/business DB interface table 25 based on the figure name (such as "wooden knob") in the figure definition section of the model structure definition table 24, and updates the business DB. Get the key. Business DB1 based on this business DB key
Calculate the parts cost from step 5 and perform aggregation processing.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is no longer necessary to assign meaning to graphic data in a program that designs a specific product, making it possible to create a versatile CAD system. .

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the model structure in the present invention, FIG. 2 is a diagram for explaining the outline of one embodiment of the CAD system of the present invention, and FIG. 3 is a diagram for explaining the graphic data meaning table in the present invention. It is. 1... Model, 11... Figure DB, 12... Parts library, 13... Model structure definition table/file, 14... User application, 15... Business DB, 16... Display work file.
File, 17... Graphics display, 18... Graphics input device, 19
...table file access routine,
20... Graphic DB access routine, 21...
display work file access routines,
22... Graphic data meaning table, 23...
Business DB access routine, 24... Model structure definition table, 25... Graphic DB/Business DB interface table, 26... Model definition section, 27... Drawing definition section, 28... Graphic definition section,
29...Figure DB key index section, 30...
...Business DB key index section, 31...Graphics
DB key/business DB key correspondence table, 32...
Interface table control information.

Claims (1)

[Claims] 1. A parts library 12 that stores symbol information of figures, a figure database 11 that stores figures and drawings, and information on a plurality of model structure definition tables and a figure DB/business DB interface. Model structure table file 13 that stores table information
a business database 15 that stores information such as parts prices and parts inventory, and a model structure definition table 2 that includes a model definition section 26, a drawing definition section 27, and a figure definition section 28.
4. Graphic DB/Business DB that associates graphic database keys with business database keys.
a graphic data meaningful table 22 consisting of an interface table 25; a graphic database access means 20 for accessing the graphic database 11 and the parts library 12 based on the data in the graphic data meaningful table 22; and a graphic data meaningful table 22. a business database access means 23 that accesses the business database 15 based on the data of 22; a table file access means 19 that controls data transfer between the model structure definition table file 13 and the graphic data semantic table 22; The model definition section 26 stores model information that specifies the product, drawing type information that specifies the drawing used when creating the product, and inter-drawing information that indicates the relationship between the drawings. The drawing definition section 27 stores drawing information for specifying drawings, drawing type information for specifying figures included in the drawings, and inter-figure information for indicating relationships between figures, and the figure definition section 28 stores: , a CAD system characterized by storing figure information that specifies figures and figure information that indicates relationships between figures.