JPH0540512A - Cad/cam device - Google Patents

Abstract

PURPOSE:To generate an NC program through the use of the data of a scale discordant graphic obtained at the time of design. CONSTITUTION:The correspondence relation information of a dimension line and a graphic element is generated (S1), and the graphic dimension of the graphic element in which the ratio of the graphic dimension and a dimension value does not coincide with the drawing scale of the whole graphic is changed so that this ratio is made coincide with the drawing scale of the whole graphic (S4). The graphic elements to be affected by the change of the dimension line are found out based on the correspondence-relation information, and the positions and the sizes of these graphic elements are changed in accordance with dimension line data after the change (S6). Thus, the NC program can be generated by using the data of the scale discordant graphic obtained at the time of the design. Therefore, the generating manhour of the NC program is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD / CAM apparatus, and more particularly to a CAD / CAM apparatus suitable for supporting sheet metal design / sheet metal processing.

[0002]

2. Description of the Related Art In a design drawing of a sheet metal design, the size of a processed portion of a product is usually extremely smaller than the size of the entire product. Therefore, if you draw the whole figure of the product on the same scale, the size of the processed part will be very small,
Drawings are often difficult to see. Therefore, in general, when drawing a drawing, the shape of the processed portion is drawn larger than the size of the entire product so that the shape and dimension line of the processed portion can be easily seen.

For example, in the case of a product as shown in FIG. 7, if the whole figure is drawn so as to match the drawing scale, the processed portion (arc-shaped notch, etc.) becomes very small, and its shape and dimension line. Becomes difficult to understand. Therefore, as shown in FIG. 6, the processed portion is drawn larger than the overall drawing scale.

A conventional CAD / CAM device used for such sheet metal design and sheet metal processing has the following configuration. FIG. 10 is a hardware configuration diagram of an example of a conventional CAD / CAM device.

In FIG. 10, a conventional CAD / CAM device (50) includes a CPU (50a) and a memory (50b).
A CRT display device (50c) and an auxiliary storage device (50
d), mouse (50e), keyboard (50f)
And a plotter (50 g). These elements (50a) (50b) (50c) (50d)
(50e) (50f) (50g) are connected to each other via a bus (50h).

The CPU (50a) controls the whole and creates / changes graphic data based on various input data.
Performs various tasks such as creating NC programs.

The memory (50b) stores various data such as a system program, created graphic data, and processing condition data.

The CRT display device (50c) displays various input data, created graphic data, processing conditions, processing routes, input request messages, and the like.

The auxiliary storage device (50d) is used to store the created graphic data, NC program and the like in a storage medium such as a floppy disk.

The mouse (50e) is a CRT display device (5
0c) is used for designating the graphic elements of the graphic displayed in 0c) and for instructing and selecting menus.

The keyboard (50f) is used to input numerical data and character data such as data necessary for creating a figure and processing conditions.

The plotter (50g) is used to output the created figure on paper and print it.

FIG. 9 shows the conventional CAD / C shown in FIG.
It is a functional block diagram of AM apparatus (50). The figure creating means (51), based on various data inputted by the operator via the mouse (50e) or keyboard (50f), has a ratio of figure dimensions and dimension values as shown in FIG. Create a figure that includes figure elements that do not match the drawing scale (hereinafter referred to as scale mismatch figure).

That is, when the graphic data is input through the mouse (50e) or the keyboard (50f), the input data are combined to perform various processes, and the graphic elements such as points, lines, arcs, etc. are processed according to the input data. Data, dimensional line data attached to those graphic elements, dimensional value data attached to these dimensional lines, auxiliary data such as notes indicating cautions for processing, etc. are created. Then, based on these created data, figures, characters, etc. are displayed on the CRT display device (50c). These created data are sequentially stored in the memory (50b).

The operator operates the CAD / CAM device (5) via the mouse (50e) or the keyboard (50f).
0) inputting appropriate data, and checking the contents displayed on the CRT display device (50c) according to the input to confirm whether or not there is an error, and the desired scale-mismatching figure or dimension line is displayed on the CRT display device. Repeat the input until it is displayed at (50c).

The printing means (56) is a graphic forming means (5
The data of the scale mismatch graphic created in 1) is stored in the memory (5
0b), output to a plotter (50g), and print the scale mismatch graphic on paper.

Based on various data input by the operator, the machining route information creating means (57) sets the ratios of the graphic dimensions of all the graphic elements and the dimension values to the drawing scale of the entire graphic as shown in FIG. A matched figure (hereinafter referred to as a scale-matched figure) is created, and machining path information is created based on the obtained data. The procedure is the same as in the case of creating a figure. The created machining path information is stored in the memory (50b). The scale of the scale matching figure is usually 1/1.

The processing condition setting means (54) specifies processing conditions such as a processing method and processing accuracy for the processing path information created by the processing path information creating means (57) in response to an instruction from the operator. .. The processing path information with the processing conditions thus added is stored in the memory (50b). In addition, the processing conditions are specified by the mouse (50e) and the keyboard (50
f).

The NC program creating means (55) reads out machining path information with machining conditions from the memory (50b), and creates an NC program based on the information. The created NC program is output to the auxiliary storage device (50d) and stored in a storage medium such as a floppy disk. When processing, the storage medium is set on the NC machine tool.

[0020]

As described above, in the conventional CAD / CAM device (50), the scale-mismatched figure created by the figure creating means (51) is once printed on paper, and the printed figure is printed. The operator inputs the data again while watching the operation instruction information. For this reason, there is a problem that not only is it troublesome to create the NC program, but it also takes a lot of time.

Therefore, an object of the present invention is to provide a CAD / CAM device capable of creating an NC program by utilizing the data of the scale mismatch graphic obtained at the time of design.

[0022]

CAD / CA of the present invention
The apparatus M is a figure creating means for creating a figure including a figure element in which the ratio of the figure size and the dimension value does not match the drawing scale of the entire figure, and the figure whose ratio of the figure size and the dimension value does not match the drawing scale of the entire figure. Change the graphic size of an element so that the ratio of the graphic size and the dimension value of the graphic element matches the drawing scale of the whole graphic. And an NC program creating means for creating an NC program based on a figure matched with a drawing scale.

The graphic changing means calculates correspondence information indicating a correspondence between a dimension line and a graphic element whose position and / or size changes when the length of the dimension line is changed. Correspondence information calculation means, dimension line length changing means for changing the length of the dimension line attached to the figure element in which the ratio of the figure size and the dimension value does not match the drawing scale of the whole figure, and the dimension line length It is preferable to include graphic element changing means for changing the position and / or size of the graphic element based on the correspondence information when the length of the dimension line is changed by the changing means.

[0024]

In the CAD / CAM apparatus of the present invention, the ratio of the figure size and the dimension value does not match the drawing scale of the whole figure. The figure size of the graphic element is changed so as to match the drawing scale of the whole figure. Even if the data is not input again, the data of the scale-mismatched figure can be obtained from the data of the scale-mismatched figure.
By pouring out the machining path information from the data of the scale matching figure, the NC program can be immediately created.

Further, since the length of the dimension line attached to the graphic element usually corresponds to the dimension of the graphic element, the ratio of the length of the dimension line to the dimension value should match the drawing scale of the whole graphic. If the length of the dimension line is changed and the position and size of the corresponding graphic element are changed accordingly, the data of the scale matching graphic can be obtained. Therefore, the NC program can be created by extracting the machining path information from the data of the scale matching figure.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS CAD of the present invention will be described below with reference to the accompanying drawings.
An example of the / CAM device will be described. FIG. 3 is a hardware configuration diagram of an embodiment of the CAD / CAM device of the present invention.

Referring to FIG. 3, CAD / CAM of the present invention
The device (10) is the conventional CAD / CAM device (50) shown in FIG. 10 except that the plotter (50g) is not provided.
It has the same configuration as. Incidentally, corresponding elements are given corresponding reference numerals.

FIG. 1 shows the CAD / CAD of the present invention shown in FIG.
It is a functional block diagram of a CAM device (10). In FIG. 1, a CAD / CAM device (10) according to the present invention includes a figure creating means (11), a figure changing means (12), a machining path information extracting means (13), and a machining condition setting means (14).
And an NC program creating means (15).

The figure creating means (11) is a conventional CAD /
It has the same configuration as the figure creating means (51) of the CAM device (50) and has a mouse (10e) or keyboard (10f).
Based on various data input via, a scale mismatch graphic as shown in FIG. 6 is created. The created data of the scale disagreement pattern is stored in the memory (10b).

The graphic changing means (12) is a memory (10
Read the data of the figure that does not match the scale from b), change the dimension data of the figure element whose ratio of the figure dimension and the dimension value does not match the drawing scale of the entire figure, and change the figure dimension of the figure element to the dimension value. Match the overall drawing scale. The data of the scale matching figure thus obtained is stored in the memory (10b).
Remember. The scale matching figure obtained by changing the figure in FIG. 6 is as shown in FIG. The scale of this scale-matching graphic is, for example, 1/1.

The machining path information extracting means (13) reads the data of the scale-matching graphic changed / created by the graphic changing means (12) from the memory (10b) and extracts the machining path information from the data. This extraction method uses the conventional CAD
/ CAM device (50) processing route information creating means (57)
Is the same as that performed in. The extracted machining path information is stored in the memory (10b). FIG. 8 shows an example of the machining path information extracted from the figure of FIG.

The processing condition setting means (14) is a conventional CA.
It has the same configuration as the processing condition setting means (54) of the D / CAM device (50). The machining path information is read from the memory (10b), and the mouse (10
e) or processing conditions such as processing accuracy and processing accuracy are specified based on various data input via the keyboard (10f). The machining route information for which the machining conditions are specified is
It is stored in the memory (10b).

The NC program creating means (15) has the same structure as the NC program creating means (55) of the conventional CAD / CAM device (50). The machining path information with the machining conditions is read from the memory (10b), and the NC program is created based on the information. The created NC program is stored in the memory (10b), further output to the auxiliary storage device (10d), and stored in the storage medium.

Next, the configuration of the figure changing means (12) will be described in detail. FIG. 2 is a functional block diagram showing the configuration of the figure changing means (12). Figure changing means (12)
Includes a correspondence information calculating means (12a), a dimension line length changing means (12b), and a graphic element changing means (12c).

The correspondence information calculation means (12a) calculates the correspondence information between the graphic element and the dimension line for the data of the scale mismatch graphic. This correspondence information is information that clarifies the correspondence with a graphic element that is deformed or moves under the influence of a change in the length of a certain dimension line.

The dimension line length changing means (12b) changes the lengths of the dimension lines attached to the graphic elements in which the ratio of the graphic dimension and the dimension value does not match the drawing scale of the entire graphic, and all the dimension lines are changed. Make sure that the ratio of the length to the dimension value matches the drawing scale of the whole figure.

The graphic element changing means (12c) is based on the correspondence information obtained by the correspondence information calculating means (12a) when the length of the dimension line is changed by the dimension line length changing means (12a). And change the graphic element corresponding to the changed dimension line. That is, the graphic element is enlarged or reduced according to the change (enlargement or reduction) of the length of the dimension line,
Furthermore, it is moved so as to match with other graphic elements.

Next, the operation of the figure changing means (12) will be described. FIG. 4 is a flowchart showing the operation of the figure changing means (12).

In step S1, first, the relationship between the graphic element data of each graphic element and the dimension line data is examined for the data of the graphic pattern that does not match the scale created by the graphic creating means (11), and the drawing of the entire graphic pattern that does not match the scale is performed. Correspondence information that clarifies which figure element's position or size changes when the length of any dimension line is expanded or reduced to match the scale (eg, 1/1) create. The obtained correspondence information is stored in the memory (10b).
Remember.

An example of correspondence information about the graphic shown in FIG. 5 is as follows. Dimension line (D1) -dimension auxiliary line (H11) side-constituent points (P1), (P4) Dimension auxiliary line (H12) side-constituent points (P2), (P3) Dimension line (D2) -dimension auxiliary line ( H21) side-constituent point (P2), (P1) Dimension auxiliary line (H22) side-constituent point (P3), (P4) Line segment (L1) -Constituent point (P1), (P2) Line segment (L2) -Composition point (P2), (P3) Line segment (L3) -Composition point (P3), (P4) Line segment (L4) -Composition point (P4), (P1)

In the correspondence information, for example, when the length of the dimension line (D1) is changed, the constituent points affected by it are (P1) (P4) (P2) (P3). As is clear from above, the line segment (L1) (L
2) (L3) and (L4) are these constituent points (P1) (P
4) Since it is configured by combining (P2) and (P3), the graphic elements that need to be deformed and moved with the change in the length of the dimension line (D1) are line segments (L1) (L2) ( L
3) (L4). In this way, line segments (L1) (L2) (L3) (L
If you transform or move any of the graphic elements such as 4),
It is possible to know whether a scale matching figure can be obtained.

In step S2, the dimension line data and the dimension value data of each graphic element are compared, and it is determined whether or not the ratio does not match the drawing scale of the entire graphic, that is, whether or not there is a dimension line that does not match the scale. In the example of FIG. 5, for example, it is determined whether or not the ratio of the length of the dimension line (D1) of the line segment (L1) and the dimension value attached thereto matches the drawing scale of the entire figure. .. If it is determined that there is a dimension line that does not match the scale, the process proceeds to step S3. If it is determined that there is no dimension line that does not match the scale, the process jumps to step S6.

In step S3, the data of the dimension line which does not match the scale is taken out, and in step S4, the data of the dimension line taken out is changed so that the ratio of the length of the dimension line to the dimension value becomes the whole drawing scale. Try to match. In this way, a dimension line conforming to the scale is obtained. In the example of FIG. 5, for example, when the ratio of the length of the dimension line (D1) and the dimension value does not match the overall drawing scale, the data of the dimension line (D1) is extracted and its length is set. Change to match the overall drawing scale.

In step S5, the length data of the new dimension line (matching the scale) obtained in step S4 is stored in the memory (10
It is stored in b), and then the process returns to step S2. Figure 5
Speaking of the example, for example, after storing the length data after the change of the dimension line (D1), the process returns to step S2.

Thereafter, steps S2 to S5 are repeated in the same manner, and the lengths of the dimension lines are similarly changed for all the graphic elements whose ratio of the length of the dimension line to the dimension value does not match the drawing scale of the entire graphic.

In step 6, the changed length data of the dimension line is read from the memory (10b), and the affected graphic element is found on the basis of the correspondence information created in step S1 to find the changed dimension. The position data and size data of the graphic element are changed so as to correspond to the length of the line. In this way, a figure in which the drawing scales of all the figures match, that is, a scale-matching figure is obtained.

In step 7, the position data and size data of the new graphic element obtained by changing the position and size are stored in the memory (10b).

In step 8, the CRT display device (10
The scale-mismatching figure is deleted from c), and the scale-matching figure obtained in step S7 is displayed.

In step 9, data relating to the scale mismatch graphic is deleted from the memory (10b).

In step 10, the scale-matching graphic is displayed on the CRT display device (10c) instead of the scale-mismatching graphic erased in step S8.

As described above, the scale matching figure is the CRT.
Since it is displayed on the display device (10c) and the data is stored in the memory (10b), the operator
If a machining route is input with the mouse (10e) or the like while looking at the graphic displayed on the CRT display device (10c), the machining route information extracting means (13) will be stored in the memory (10b).
Calculation is performed using the data stored in. In this way, the processing route information is obtained.

[0052]

According to the CAD / CAM apparatus of the present invention, it is possible to create an NC program by using the data of the scale mismatch graphic obtained at the time of design. For this reason,
It is not necessary to re-input the data to create the scale matching figure, and the NC program creation man-hour is reduced.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of a CAD / CAM device of the present invention.

FIG. 2 is a functional block diagram of figure changing means of an embodiment of a CAD / CAM device of the present invention.

FIG. 3 is a hardware configuration diagram of an embodiment of a CAD / CAM device of the present invention.

FIG. 4 is a flow chart showing the operation of the figure changing means of one embodiment of the CAD / CAM device of the present invention.

FIG. 5 is an explanatory diagram showing correspondence information between dimension lines and graphic elements.

FIG. 6 is a diagram showing an example of a designed scale mismatch graphic.

7 is a diagram showing a scale-matching figure obtained from the scale-mismatching figure of FIG. 6;

8 is a diagram showing an example of processing route information extracted from the figure of FIG.

FIG. 9 is a functional block diagram of an example of a conventional CAD / CAM device.

FIG. 10 is a hardware configuration diagram of an example of a conventional CAD / CAM device.

[Explanation of symbols]

 10 CAD / CAM device 10a CPU 10b Memory 10c CRT display device 10d Auxiliary storage device 10e Mouse 10f Keyboard 11 Graphic creation means 12 Graphic modification means 12a Correspondence information calculation means 12b Dimension line length modification means 12c Graphic element modification means 13 Processing path Information extracting means 14 Machining condition setting means 15 NC program creating means

Claims (2)

[Claims] 1. A figure creating means for creating a figure including a figure element in which a ratio of a figure size and a dimension value does not match a drawing scale of the whole figure, and a ratio of the figure size and the dimension value does not match a drawing scale of the whole figure. A figure changing means that changes the figure size of a figure element so that the figure size and dimension value ratio of that figure element matches the drawing scale of the whole figure, and the figure size and dimension value ratio of all figure elements is the whole figure A CAD / CAM device comprising: an NC program creating means for creating an NC program based on a figure matched with the drawing scale of FIG. 2. The graphic changing means creates correspondence information indicating correspondence between a dimension line and a graphic element whose position and / or size changes when the length of the dimension line is changed. Correspondence information calculating means for calculating, dimension line length changing means for changing the length of the dimension line attached to the figure element in which the ratio of the figure size and the dimension value does not match the drawing scale of the entire figure, and the dimension line The graphic element changing means for changing the position and / or the size of the graphic element based on the correspondence information when the length of the dimension line is changed by the length changing means. CAD / CAM device described in 1.