JPH04104370A - Shape change register method for parts - Google Patents

Abstract

PURPOSE:To output graphic form while partially simplified by extracting the outline of the graphic shape or changing to an arbitrary shape pattern. CONSTITUTION:At first, the name of parts to deal with a certain shape as parts is decided, and the name of the parts is registered. Next, a priority (P) of the parts is decided in a step 2. The priority is expressed by the value of P, and the priority P indicates the degree for the necessity of the output to a screen or to graphic, etc. At the time of simplification, the outline is extracted and the simplification processing for the first step performing the patterning processing to the prescribed shape is performed in a step 5. Next, in a step 6, the update incrementing (+1) a shape number (n) is performed and the parts data is generated while combining the shape number (n), and the shape data to be registered as parts data in the next step 7. Thus, when outputting the graphic shape, the graphic shape can be partially simplified and outputted.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for registering shape changes of parts, and in particular, in a computer-aided design system, when outputting the shape of a part, the shape of the part is partially changed. The present invention relates to a method for registering shape changes of parts that can be output in a simplified manner.

[Conventional technology]

In a computer-aided design (CAD) system, the shape of a part is designed and the graphic data of the part shape is stored.
The stored figures can be output as drawings for various purposes. When outputting as a drawing, depending on the purpose, an overall view, a detailed view of a part, or a schematic view may be required. In this case, the CAD system performs image processing on the stored graphic data to obtain a desired drawing output.

Conventionally, to output a schematic drawing of figure data, for example,
Image processing is performed to extract the axial outline of a figure shape from the stored figure data, and a drawing is output. As a method for extracting the contour of a figure, for example, Japanese Patent Application Laid-Open No. 62-6
A method of extracting the outline of a figure as described in Japanese Patent No. 9370 is used.

[Problem to be solved by the invention]

By the way, when outputting a schematic drawing of figure data using the above-mentioned conventional technology, if a part of the drawing does not require detailed output display, either only that part is not output, or the outline of that part is output. This is handled by extracting and outputting only the data.

For example, if you do not want to disclose the details of a part of a drawing to be output, you can do this by making that part a black box, or by changing it to a different shape.

However, the CAD system does not have an automatic conversion function for converting partial data of graphic data into black pockets, an automatic conversion function for changing two partial figures, etc., and there is a problem in that the operability is poor. Additionally, there is a problem in that the CAD system becomes expensive if it is equipped with a complicated image processing function.

The present invention has been made to solve these problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a part shape change registration method that allows a computer-aided design system to partially simplify and output the shape of a part when outputting the shape of the part.

[Means to solve the problem]

In order to achieve the above object, the part shape change registration method of the present invention is a computer-aided dissection system that designs the shape of a part and stores the graphic data of the part shape. The present invention is characterized in that the shape is changed to simplify the shape, and the graphic data of the simplified graphic shape at each stage is registered along with the simplification stage number according to the stage of simplification.

[Effect]

In this part shape change registration method, shape changes are made to the shape data of the part shape to simplify the shape in stages. Register the graphic data of the graphic shape. That is, the shape of the figure is changed step by step, and the changed figure shape at each step is registered as a part in a stepwise manner. When a simplified output of a graphic shape is required, a simplification stage number is specified in accordance with the importance of the graphic shape, and registered graphic shapes are selected and displayed.

The simplification of the graphic shape is performed by extracting the outline of the graphic shape or changing it to an arbitrary shape pattern, thereby simplifying a part of the graphic shape in the drawing step by step.

Thereby, it is possible to provide a CAD system that simplifies and outputs graphic shapes that do not require detailed output.

〔Example〕

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

FIG. 1 is a flowchart 1 showing an example of a component registration process in a CAD system when implementing the component shape change registration method according to the present invention in one aspect. This component registration process shows an example of a process in which the shape of the graphic data of a component is simplified step by step from a detailed drawing, and is registered along with a simplification stage number n corresponding to the stage of simplification. In addition, here, a change in the shape of a part when outputting a figure is also registered as a priority order P related to the importance of the part.

To explain with reference to FIG. 1, in the graphic shape part registration process for graphic data, first, in step 1,
First, decide on a part name for handling a certain shape as a part, and register that part name. Next, in step 2, the priority order (P)'i of the component is determined. The priority is expressed by the value of P, and the priority P indicates the degree to which it is necessary to appear on the screen or drawing. For example, priority P=
When it is 1, it means that output to the screen or drawing is inevitable, and the priority order is P=2.3, 4.・ This shows that the need for output decreases as the process progresses.

In the next step 3, the shape data (original shape) of the part is registered. To register the shape data of this original shape, n=
Add the number o and register.

The simplification stage number n indicates the stage of simplification, and also serves as a part shape data number, and also serves as an instruction number for specifying part data. In the next step 4, it is determined whether or not to perform the next step of simplification in response to an instruction input from the operator. In other words, the input request for whether or not to simplify the shape of the part is
This is done through interactive processing using a display screen for the operator, and the operator instructs the operator to input whether or not to simplify the process.

This simplification instruction input and judgment process can also be configured to automatically issue simplification instructions depending on the complexity of the part shape. For example, if the shape of a part has a configuration that exceeds the number of arbitrarily set line segments or contact points,
Automatically issue simplification instructions.

In the case of simplification, the process proceeds to step 5, where a one-step simplification process is performed in which an outline is extracted and patterned into a predetermined shape.

Next, in step 6, the shape number (fIllf abbreviated stage number) is updated by incrementing (+1), and the shape number n and the shape data (f@simplified shape data) are combined to generate part data. , in the next step 7, it is registered as part data.

Returning to the next step 4, it is determined whether the instruction input is to further simplify the shape of the part. If the shape of the part is to be further simplified, the process from step 5 is repeated. Further, if the shape of the part is not simplified up to this point, the process ends after the process.

Through such part shape simplification processing and part data registration processing, the graphic data of the part shape is simplified step by step and registered as part data. That is, the contour is extracted or changed to an arbitrary shape, the first stage of simplification is performed, and the shape data is registered with a number n=1 assigned to the shape data. At this time, the part data of the first stage simplification becomes (shape data after 1,1 simplification operation), and this part is registered. moreover.

When the shape of this part is simplified, it becomes part data of the second stage of simplification, and the part data at this time becomes (shape data after two or two simplification operations). In this way, the simplified part data is successively registered until the part shape simplification is completed.

FIG. 2 is a diagram showing an example of the data structure of component data registered through the component registration process. As shown in Figure 2,
In the registered part data 2o, the part name 21 is stored in the first part of the part data, and the priority (P) is stored in the next part.
22 is stored. Subsequently, part data of a set of shape number (simplification stage number) n value 23a=7 and corresponding shape data 2 and 3b are stored in sequence. That is, part data of a set of n=o and original shape data is stored, and then part data of a set of n-1 and shape data that has been simplified once is stored. Next, part data of a set of n=2 and the shape data that has been simplified twice are stored, and sequentially up to part data of a set of n=n and the shape data that has been simplified n times.

The registered component data 20 stores shape data in which the shape of the component is successively simplified as n increases.

FIG. 3 is a diagram illustrating the correspondence between the output figure selection criteria and the shape number n of the part data to be selected when a figure is output from the registered part data.

As shown in Fig. 3, when outputting the detailed shape of the output drawing, the value of the shape number n is selected as rr Ou, and when outputting in a simplified manner, the value of the shape number n is selected as LL I
Select I+. When further simplifying and outputting, the value of the shape number n is selected as rr 2 u. Furthermore, in the case of selecting not to output a figure, the value of the shape number n is also not selected.

In other words, when outputting the detailed shape of the output figure, n=
Select the original shape which is the shape data of o. When outputting a simplified shape of the output figure, define n=1 and
Select the shape data when =1. As a result, the part when the simplification operation is performed once is selected. To further simplify the output figure and output it, define n=2,
Select the shape data when . As a result, the part when the simplification operation was performed twice is selected. If you do not define anything for n when you do not want to output a figure, no part will be selected and will not be output.

In this way, by selecting the shape number n for each part data or for all parts, it is possible to select the shape of the output figure and output the figure.

Next, a specific example of shape data in which component data is simplified step by step will be described.

FIG. 4 is a diagram showing an output example of a detailed drawing of a drive device, which is an example of part data created by a CAD system. The detailed drawing of the drive device of the part data shown in FIG. 4 is the original shape data with the shape number (wi abbreviation stage number) n value 000". Each shape data of the data includes a gear assembly including a motor 44, various gears operated by the motor power, and a gear shaft 45 in the gear box 41, and an external drive device connecting portion 43 and the drive shaft 42 connected to the gear box 41. Assembly relay: Shape data of gears connected.Each piece of shape data is registered as a part.

FIG. 5 is a diagram showing an example of a drawing output obtained by partially simplifying and outputting the drawing output of the component data of the drive device shown in FIG. 4. The simplified drawing of the drive device of the component data shown in FIG. 5 is, for example, shape data that has been simplified once, with the value of the shape number ([simplification stage number) n] being It I It. In the gear box 41 of the gear assembly, the detailed shape inside the shape data of the motor 46 is erased and simplified shape data is displayed with only the outline. Further, the shape data of the gear shaft 47 is simplified shape data in which the gear teeth of a part of the gear are deleted and simplified.

FIG. 6 is a diagram showing an example of a drawing output obtained by further simplifying the partially simplified drawing of the drawing output of the drive device component data shown in FIG. 5. The simplified drawing of the drive device of the component data shown in FIG. 6 is shape data that has been simplified three times, with the value of the shape number (simplification stage number) n being, for example, rr 3 u. The shape data of the parts in the gear box 41 of the gear assembly is simplified shape data in which the motor, gear shaft, and gear are all deleted. Also, the outside of the gear box 41 is shown as simplified shape data with a portion of the gear removed.

In order to output figures as shown in FIGS. 4, 5, and 6, shape numbers n are set to n2O, n=1, and so on, respectively, as output conditions. and n=3.

By the way, as shown in Fig. 2, the parts data 2 to be registered
Since a priority P indicating the degree to which output to a screen or a drawing is necessary is set and stored in 0, the priority P can also be used to determine output conditions for output figures. In this case, the output conditions are determined using a selection control table in which shape numbers of component data to be selected are predetermined in accordance with the priority order P.

FIG. 7 is a diagram showing an example of a selection control table when drawings are output based on the priority order of parts.

In this selection control table, when the component priority P is 2 or less, that is, when P=1 and P=2, data with component shape data number n=o is selected, and when P=3, n=1 When the data is P-4 or higher, n indicates that nothing is selected.

By using the selection control table defined in this way, it becomes possible to select the shape to be output based on the value of the priority P.

The above V@processing concave figure output processing is performed through interactive processing by an operator, but it is also possible to use an automatic program]2.

As described above, according to this embodiment, when outputting a figure shape by simplifying it step by step and registering a simplified shape in a CAD system, the figure shape is partially transformed into an M-packet and output. can. In this case, step-by-step simplification of the figure shape is performed by extracting the outline of the figure shape or by changing it to an arbitrary figure shape. Register the graphic data of the simplified graphic shape.

As a result, it is possible to step-by-step simplify a part of the graphic shape in the drawing, and it is possible to provide a CAD system that simplifies and outputs the graphic shape that does not require detailed output.

The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As described above, according to the present invention, when outputting one drawing, it is possible to easily simplify or hide a part of the drawing and avoid outputting details of the part that is not desired to be made public. effective. Further, if it is not necessary to output all the parts in the output drawing and only a part needs to be understood, the output time can be shortened by simply displaying or not displaying the parts other than that part. Further, in this case, since there is no need to output unnecessary figures, it is possible to output clear and easy-to-read figures.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing an example of a component registration process in a CAD system when implementing the component shape change registration method according to the present invention in one aspect, and FIG. 2 is a flowchart showing part data registered by the component registration process. A diagram showing an example of the structure; FIG. 3 is a diagram illustrating the correspondence between the output shape selection criteria and the shape number n of the selected part data when outputting a shape from registered part data; FIG. A diagram showing an output example of a detailed drawing of a drive unit, which is an example of part data created with a CAD system. Figure 5 is a partially simplified version of the output of the part data of the drive unit shown in Figure 4. FIG. 6 is a diagram showing an example of a drawing output obtained by further simplifying the partially simplified drawing of the drive device component data shown in FIG. 5, and FIG. 7 is a diagram showing an example of the drawing output. 2 is a diagram showing an example of a selection control table when outputting a drawing based on the priority order of parts. In the figure, 20... Parts data, 21... Parts name, 22
. . . Priority order, 23a . . . Shape number (simplification stage number), 23b . . . Shape data.

Claims (1)

[Claims] 1. In a computer-aided design system that designs the shape of a part and stores the graphical data of the part shape, the graphical data is modified to simplify the graphical shape step by step.
A method for registering a shape change of a part, characterized in that, according to the stage of simplification, graphic data of a simplified graphic shape at each stage is registered together with a simplification stage number.