JPH0238977B2 - - Google Patents

Description

[Detailed description of the invention]

[Summary] This is a manufacturing drawing creation method that improves graphic processing in drawing board files in CAD. In a CAD system that performs an input figure designating means for hitting each end point of the input figure, and a figure writing means for overwriting a desired figure specified by the input figure specifying means at a corresponding storage position in a file to be overwritten with the desired figure. and a required manufacturing drawing is created from the file to be overwritten with the required figure. [Industrial Application Field] The present invention relates to a manufacturing drawing creation method, and particularly to a CAD
This invention relates to a manufacturing drawing creation method that improves graphic processing in a drawing board file. With the development of computer systems, the technique of drawing a study drawing that includes the final shape and all the parts to be used using CAD (Computer Aided Design), and then creating various manufacturing drawings for the whole or each part from this study drawing. It has been widely adopted. Expectations for this technique are increasing, and there is a growing demand for the ability to efficiently create various drawings from study drawings. However, due to limitations inherent in the process of creating manufacturing drawings from the study drawings, conventional techniques have not been able to take full advantage of CAD functions, despite the above requirements, and CAD has been used exclusively to create manufacturing drawings. Currently, the focus is on obtaining specific manufacturing drawings through a tedious and error-prone process. [Prior art] As shown in Fig. 8, the conventional manufacturing drawing creation method copies the necessary parts of the study drawing created by CAD to the work area (S1 in Fig. 8),
Unnecessary graphical elements within that part are deleted by trial and error (S2 in FIG. 8). If you accidentally erase a necessary graphic element (S3 in Figure 8)
YES), the graphic element is input again (S4 in FIG. 8). After the deletion of unnecessary graphical elements is completed (NO in S3 of FIG. 8), necessary graphical elements to be added are added to the study drawing section after the deletion is completed to create a manufacturing drawing (No. 8). S5 in the figure). [Problem to be solved by the invention] This conventional manufacturing drawing creation method requires copying of necessary parts of the study drawing created by CAD and trial and error deletion of unnecessary graphical elements therein. It is an essential element for creating manufacturing drawings. Therefore, this method does not fully utilize the functions provided by CAD for drawing creation, and is unable to meet the above-mentioned demands. It also leads to a decline in work efficiency and an increase in mistakes. The present invention was created in view of the shortcomings of the conventional methods as described above, and provides a manufacturing drawing creation method that can easily create various manufacturing drawings from a single study drawing, with fewer errors and more efficient work. The purpose is to provide. [Means for Solving the Problems] FIG. 1 shows a block diagram of the principle of the present invention. In this figure, 10 _i is a predetermined file in which a study drawing created by the graphic processing means 13 of the CAD is written. _10j is another file into which the study diagram of the file _10i is written by the file writing means 14. 15 is a display device that displays a study drawing in another file under the control of the graphic processing means 13; 17 is a display device 15
This is an input figure specifying means for hitting each end point of each figure element within the required figure range displayed on the display screen. 10 _K is a figure writing means 1 that responds to the hit position data of the input figure element specifying means 17.
These files are files other than the above-mentioned files 10 _i and 10 _j in which the required graphics are overwritten under the control of 8 . [Operation] The study diagram created by the graphic processing means 13 is written in advance to a predetermined file _10i . Thereafter, the study drawing is written to another file _10j by the file writing means 14 and displayed on the display device 15 under the control of the graphics processing means 13. The input figure specifying means 17 hits each end point of each figure element within the displayed required figure range. The graphic writing means 18 responsive to the hit position data overwrites each graphic element on the file _10K to create a required manufacturing drawing. [Example] FIG. 2 shows a schematic configuration of a CAD for implementing the present invention. 1 is the digitizer or plotter of the graphic input/output workstation 2 (1 ₁ is a cursor); 3 and 4 are the graphic input/output workstation 2
graphic display, tablet (4 ₁
is a stylus pen. ), 5 and 6 are the character display and keyboard of the graphic input/output workstation 2. Digitizer or plotter 1 or tablet 4 has its cursor 1 ₁ ,
Alternatively, the coordinate data of a figure drawn on the drawing surface by the stylus pen ₄₁ is input to the figure processing processor 8. The graphic display 3 displays graphic data from the graphic processor 8 on its screen, and a tablet 4 is placed on the display screen. By using the stylus pen of the tablet 4, the coordinate data of the figure is input to the figure processor 8 in the same way as with the digitizer or plotter 1. The character display 5 can display figures similar to the graphic display 3 on its screen, and characters can be written using the keyboard 6 at any position within the displayed figure that can be specified with a cursor. In addition, each input/output device of these graphic input/output workstation 2 (digitizer or plotter 1, graphic display 3, tablet 4, character display 5,
Graphic input/output commands (described later) are given in an interactive manner between the keyboard 6) and the operator 7, and the graphic processing processor 8 responds to the graphic input/output commands by processing graphic data input via the graphic input/output workstation 2. The graphic data is input into the graphic data file 9, and if necessary, the graphic data is taken out from the graphic data file 9 and displayed on the displays 3 and 5 of the graphic input/output workstation 2. The graphic data file 9 is as shown in FIG.
It consists of a drawing board file 10 consisting of a predetermined number of drawing boards, for example, 256 drawing boards, and a parts file 11. The drawing board is a virtual board (layer) on which graphical elements such as study drawings, which will become clear from what will be described later, are drawn, and the component file 11 is a group of graphical elements.
Each name is given a name and registered. The drawing board is a digitizer (or plotter) 1,
The screen size may be the same as that of the graphic display 3 and character display 5, or it may be composed of a plurality of screens. This drawing board stores each piece of graphic data (bit pattern in a form that preserves the geometrical arrangement of the drawing or data indicating the geometrical arrangement positional relationship of the drawing) corresponding to the manufacturing drawing display pixels. . The CAD configured as described above is equipped with the following functions. One of them is a command input function, which allows various commands to be input from input devices such as the digitizer (or plotter) 1, tablet 4, and keyboard 6. The function for inputting coordinate parameters of commands input by this function is the various coordinate input function. This coordinate input function includes, in addition to the entity mode input function necessary in relation to the present invention, a relative orthogonal coordinate input function, a relative polar coordinate input function, an incremental orthogonal coordinate input function, and an incremental polar coordinate input function. The entity mode input function is intended to be input from the digitizer 1 or tablet 4, and a graphical element within a certain range hit on the screen with the cursor ₁₁ or stylus pen ₄₁ is input, and that graphical element is If the element is a point, coordinate values are input. In addition, there is a function to create and add figures, which allows you to create and add figures in various variations using figure elements as a unit. It will be registered in the drawing board file for future use. A function for erasing, modifying, and copying a figure created by this figure creation function is a figure operation function. In addition, groups of graphic elements that are used repeatedly among the created shapes are grouped as parts,
Give it a name and register it in the parts file 11,
There is a component file creation/utilization function that allows you to specify a name and use that component file for necessary processing when needed. In addition to this, it also has a board function. This designates one of the four states shown in Table 1 using a predetermined command among the commands described above.

〔Effect of the invention〕

As described above, according to the present invention, various manufacturing drawings can be created from a single study drawing. The manufacturing drawings can be created efficiently and with fewer input errors.

[Brief explanation of drawings]

Figure 1 is a block diagram of the principle of the present invention, Figure 2 is a schematic diagram of the CAD system for implementing the present invention, Figure 3 is a diagram showing a more detailed configuration of the figure data file in Figure 2, and Figure 4 is a diagram showing a more detailed configuration of the figure data file in Figure 2. Converting drawing board file study drawings into components,
FIG. 5 is a diagram schematically showing the registration of the component in the component file. FIG. 5 is a diagram schematically showing the arrangement of each component from the component file to the drawing board file.
The figure is a diagram schematically showing overwriting of graphical elements, Figure 7 is a diagram diagrammatically showing the process for creating formal manufacturing drawings, and Figure 8 is a flowchart for explaining the conventional method. . 1 to 6, 10 _i , 10 _j , 1
0 _K is a file (drawing board file 10, component file 11), 13 is a figure processing means (figure processing processor 8), 14 is a file writing means (command input function, figure addition function, command input function),
15 is a display device (graphics display 3, tablet 4); 17 is an input figure specifying means (stylus pen 4 ₁ , cursor 1 ₁ ,
Reference state setting function, entity mode input function), 18 is a figure writing means (new definition function,
Active state setting function, entity mode input function).

Claims (1)

[Claims] 1. In a CAD that performs graphic processing, a file writing means 14 inputs a study drawing created in a predetermined file into another file, and a file writing means 14 for inputting a study drawing created in a predetermined file into another file, and a file writing means 14 for inputting a study drawing created in a predetermined file into another file, and Input figure designating means 17 for hitting each end point of each graphic element in the required figure range in the study drawing, and the correspondence in the file to be overwritten of the required figure elements of the required figure elements specified by the input figure specifying means 17. 1. A manufacturing drawing creation method, comprising: a graphic writing means 18 for causing overwriting in a storage position, and creating a required manufacturing drawing from the file to be overwritten with the required graphic elements.