JPH07191721A - Device for preparing nc data for sheet metal working - Google Patents

Abstract

PURPOSE:To realize a device for preparing NC data for sheet metal working capable of preparing precise NC data with ease in a short period of time. CONSTITUTION:The device is provided with a basic pattern register 10 provided with a basic pattern register processing part 11 a pattern condition storage part 12 and a pattern graphic storage part 13, and a shape editing part 20 provided with a shape data storage part 21, a shape data reading processing part 22, a pattern decision processing part 23, a shape display processing part 24, a shape editing processing part 26 and a shape data output processing part 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC data generating device for making NC data for NC cutting for cutting a sheet metal part by using a computer, and particularly for a sheet metal part having a similar shape. The present invention relates to a sheet metal working NC data generation device that generates NC data.

[0002]

2. Description of the Related Art Conventionally, CAD (Computer Aided Design)
/ CAM (Computer Aided Manufacturing) system,
In order to obtain continuous processing shape data of sheet metal products, the shape is defined by the two-dimensional elements of local cutouts and external shape elements such as straight lines, circles, and points, and the die determination and The dimensions were calculated.

[0003]

However, in the conventional NC data generator for sheet metal processing, the thickness and the developed shape of the sheet (the shape of a bent sheet metal part developed in a plane) are taken into consideration when inputting CAD data. It is necessary to create a figure or a three-dimensional figure. Further, since the display method of the graphic is displayed at a reduced scale of an actual size, when the graphic of a long object is displayed, the processed shape of small details cannot be seen. Therefore, it has been necessary to edit the shape by repeatedly reducing and enlarging the figure. Furthermore, when changing the total length, it is necessary to move the processing position of each processing portion on each surface. Further, when inputting the CAM information, it is necessary to input complicated processing conditions for each cutting processing, but this input requires skill.

In order to solve the above problems, Japanese Patent Laid-Open No.
As described in Japanese Patent No. 167932, there is one that processes data by character-based data input, but if this is used alone, there will be many input errors due to the character-based input method, and It takes time to check.

As described above, the conventional NC for sheet metal processing
In the data generation device, it is difficult to input the graphic information if the input is based on the graphic, and it is difficult to check the input error for the input based on the character. In any case, it is necessary to create the NC data. There was a problem that it required a lot of time and considerable processing know-how.

Therefore, an object of the present invention is to provide an N for sheet metal processing capable of easily and accurately producing accurate NC data in a short time.
The object is to realize a C data generation device.

[0007]

[Means for Solving the Problems] The NC for sheet metal processing of the present invention
The data generating device is a sheet metal working NC data generating device including a basic pattern registration device and a shape editing device,
The basic pattern registration device inputs a shape pattern of a typified sheet metal part, and classifies the shape pattern into information for determining the shape pattern and information for displaying, and determines the shape pattern. A pattern condition storage section for storing information for storing a pattern pattern and a pattern figure storage section for storing information for displaying a shape pattern. A shape data storage unit that stores shape patterns, external dimensions, and processing information of sheet metal parts having similar shapes as part data, a shape data read processing unit that inputs the part data from the shape data storage unit, and the input part data The pattern determination processing unit that searches the pattern condition storage unit for a shape pattern that matches the shape pattern of The information for displaying corresponding to the shape pattern is taken out from the pattern figure storage section, and based on the information, the shape display processing section for displaying the sheet metal part in the maximum size on the display means, and the displayed figure It has a shape edit processing unit that changes external dimensions and adds / changes / deletes processing information, and a shape data output processing unit that outputs the graphic processed by the shape edit processing unit to the shape data storage unit. It is characterized by being.

[0008]

The NC data generator for sheet metal processing of the present invention creates sheet metal part data from the shape data storage unit in which the data of the shape similar to the sheet metal part to be created is registered in advance. External dimensions and processing information are taken out as part data and displayed on the display means.

First, a shape pattern that has been typified in advance is
The information for identifying the shape pattern is separately stored in the pattern condition storage unit, and the information for displaying the shape pattern on the display means is separately stored in the pattern graphic storage unit.

Next, the part data is extracted from the shape data storage unit, and the matching shape pattern is searched from the pattern condition storage unit using the shape pattern included in the extracted part data as a key. When a matching shape pattern is found, information for display corresponding to the shape pattern is taken out from the pattern figure storage unit. next,
The external dimensions of the part data and the size of the processing information are separately changed in the X and Y directions so as to match the size of the extracted information to be displayed and displayed on the display means. On the display means, the external dimensions and processing information included in the component data are displayed by the menu, and the external dimensions are enlarged / reduced and the processing information is added / changed / deleted by a pointing device, for example. The component data that has undergone various processes is re-registered in the shape data storage unit.

In this way, an accurate N can be obtained in a short time.
It is possible to realize an NC data generation device for sheet metal processing that can create C data.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of an NC data generator for sheet metal processing according to the present invention. The apparatus of FIG. 1 includes a basic pattern registration apparatus 10 that registers a basic shape pattern, a shape editing apparatus 20 that reads part data, displays and edits a corresponding basic pattern, and re-registers it as new part data. Composed of.

First, the basic pattern registration device 10 will be described. A shape basic pattern is input from the outside by a basic pattern registration unit 10 in advance, and the input graphic information is divided into information for determining the shape and information for displaying the shape, and the pattern condition storage unit 12 and the pattern are stored respectively. It is registered in the graphic storage unit 13. In this embodiment, FIG.
Five basic shape patterns P1 to P shown in (a) to (e)
It is assumed that 5 is prepared. The content of the pattern condition storage unit 12 corresponding to this is shown in FIG. The patterns P1 to P5 correspond to the pattern numbers 1 to 5 shown in FIG. 7B, respectively. In the pattern figure storage unit 13,
For each pattern number described above, various external display sizes for displaying the pattern on the display screen in full length and width are stored.

Next, the shape editing device 20 will be described. First, the shape data read processing unit 22 reads the component data from the shape data storage unit 21 and stores it in a computer memory (not shown).

Here, the component data will be described with reference to FIGS. 4 and 5. 4A and 4B are a front view and a side view showing the shape of a certain component having a three-dimensional structure. This part has a total length in the X direction of 400
The length in the direction is 100, and the faces M32, M31, M0
It is composed of five surfaces 0, M11 and M12. Surface M0
0 includes a processed portion M51 and a processed portion M53, and the surface M32 includes a processed portion M52. FIG. 5 shows the part data of this part. The external dimensions, the bending information, and the processing information of the major items in FIG. 5 correspond to the length, the surface, and the processed portion of the entire component described above, respectively. The X dimension of the small item of the external dimension corresponds to the length of the entire component in the X direction, the Y dimension of the small item corresponds to the length of the entire component in the Y direction, and the bending information 1 to 5 is shown in FIG. The surfaces M32, M31 shown in (b),
Corresponding to each of M00, M11, M12, the surface number of the sub-item is the identifier of the surface, 32, 31, respectively.
11 and 12. The bending height and the bending angle of the bending information indicate the length of the surface and the bending direction of the surface, respectively. For example,
The surface M00 is described by the bending information 3, but since the bending height is 40 and the bending angle is 0, the length is 4
At 0, it can be seen that this is the basic surface when bending this part. Next, although the surface M31 is described by the bending information 2, since the bending height is 50 and the bending angle is −90, it can be seen that the surface M31 has a length of 50 and is bent in the Z direction ( See FIG. 4B). Next, although the surface M32 is described by the bending information 1, since the bending height is 30 and the bending angle is 90, it can be seen that the surface M32 has a length of 30 and is bent in the X direction (Fig. 4 (b)). The surface number and the bending angle in the bending information are set by the pattern determination processing unit 23, which will be described later, in the pattern condition storage unit 12.
It is referred to as a key when searching inside.

The processing information 1 to 3 is the processing portion M shown in FIG.
It corresponds to 52, M52, and M53. The surface number of the small item corresponds to the surface number of the surface including the processed portion, and the reference positions X and Y indicate the position of the processed portion with reference to the surface including the processed portion. The processing code is an identifier of the processing portion. The processing sizes X and Y indicate the processing sizes in the X and Y directions. For example, the processed portion M51 is described by the processing information 1, but since the surface number is M00, it is known that it is included in the surface M00,
Since the reference positions X and Y are 0 and 10, it can be seen that the reference position X and Y are displaced from one end of the surface M00 by 0 in the X direction and 10 in the Y direction (see FIG. 4A).

Next, the pattern determination processing unit 23
It is determined by the algorithm as shown in FIG. 6 which shape basic pattern in the pattern condition storage unit 12 the shape data stored in the computer memory matches, and when they match, the pattern number is acquired. (See FIG. 3).

Now, the algorithm shown in FIG. 6 will be described. The pattern determination processing unit 23 sets the data read by the shape data reading processing unit 22 in the input table as shown in FIG. 7A for the surface number and the bending angle (step S1). Next, data of one pattern number is obtained from the pattern condition storage unit 12 (see FIG. 7B) (step S2), and the set surface number and bending angle are compared with the data (step S3). ). If they do not match, the process proceeds to step S2 to obtain the data of the next pattern number. If they match, the pattern number is obtained. In this comparison, the bending surfaces 1, 2,
Regardless of the storage order of 3 and 4, if the angles with respect to each surface number match, it is regarded as table match. In this case, the obtained pattern number is 2 (step S4).

Next, by using the obtained pattern number as a key, the shape display processing section 24 retrieves information corresponding to the number from the pattern figure storage section 13. As described above, this information includes various external display sizes for full-width and vertical display on the display screen. The shape display processing unit 24 corrects the size of the component data based on this information and displays it on the display (CRT) 25. A method for correcting this size is shown in FIG.
A description will be given with reference to (a) and (b).

9 (a) and 9 (b) show display images of the information and the component data taken out from the pattern / graphic storage unit 13, respectively. First, the shape display processing unit 24
Reads out the external display size (A'x, A'y) from the information extracted from the pattern figure storage unit 13 (step S70). Next, from the component data, the external dimensions (Ax, A
y) is read (step S71), and from the external display size (A'x, A'y) and the external dimensions (Ax, Ay),
Display magnification in X direction and Y direction α _x = A′x / Ax, α _Y
= A'y / Ay is obtained (step S72). Further, the reference position (Bx, By) of the processing portion and the processing size (Cx, Cy) are read from the part data (step S73),
Display positions (B'x, B'y) in the X and Y directions are
B′x = α _x × Bx, B′y = α _Y × By,
Also, the display processing size (C′x, C ′ in the X and Y directions)
y) is obtained as C′x = α _x × Cx, C′y = α _Y × Cy (step S74). External display size (A'x, A'y) obtained above, display position (B'x, B '
y), the shape is displayed on the display 25 using the display processing size (C'x, C'y) (step S75).
Here, in FIGS. 10 (a) and 10 (b), an example in which the display size is separately corrected according to the present invention as described above, and an example in which the display dimensions in the X and Y directions are displayed at the actual scale according to the related art. Show. As shown in FIG. 10 (b), when a long object that is long in the Y direction is displayed, conventionally, small processed parts K1, K
2, K3 became smaller and hard to see,
According to the present invention, as shown in FIG. 10A, it is possible to display the shape on the entire screen by taking different scales in the X and Y directions so that the outer shape display size corresponds to the part data. it can.

Next, the shape editing processing unit 26 performs processing for adding / deleting / changing the processed portion or changing the outer dimensions of the displayed component data.

First, the addition / deletion / change processing of the processed portion will be described with reference to the flowchart of FIG. Figure 1
In 1, the menu or the like is displayed on the display to select the editing surface (step S90), and whether it is the addition of the processed portion (step S91), the change of the processed portion (step S92), or the deletion of the processed portion. (Step S
93). If a machining portion is to be added, a menu or the like that displays machining types such as round holes, ellipses, and square holes is displayed, and the machining type is selected with a mouse or the like (step S
94). Next, a processing pattern is selected (step S9).
5). FIG. 12 shows a menu for displaying the machining type and a screen when the round hole is selected as the machining type. Next, the reference position is newly input (step S96), and the processing size is also newly input (step S97). The input component data is added to the component data on the computer memory (step S98). If the machining portion is to be changed, a menu or the like for displaying the machining type such as a round hole, an ellipse, and a square hole is displayed, and the machining type is selected with a mouse or the like (step S99). Next, the reference position is changed and input (step S100), and the processing size is also corrected and input (step S101). FIG. 13 shows a screen for changing the reference position and the processing size. The changed component data is re-registered in the component data on the computer memory (step S102). If you want to delete the processed part,
A menu or the like for displaying the machining type such as a round hole, an ellipse, and a square hole is displayed, and the mouse is used to select the machining type (step S1.
03), the component data is deleted from the component data on the computer memory (step S104). After the work of any of the above is completed, the part data is displayed again (step S109), and the process is completed.

Next, the process of changing the outer dimensions by the shape editing processing unit 26 will be described with reference to the flowchart of FIG. First, the change of the external dimension is selected from the menu or the like, and the external dimension of the portion to be changed is input (step S121). The screen at this time is shown in FIG. FIG. 15 shows that the size of the portion A is being input.
If the input external dimension is changed in the X direction (step S122), the change position (extended position) in the X direction is instructed with a mouse or the like (step S123). This extension position designation screen is shown in FIG. The broken line in FIG. 16 indicates the changed position (extended position) selected by the mouse. The X component value of the reference position of all the processing parts on the right side of the X coordinate of the changed position selected with the mouse is the difference between the above two values if the input external dimensions are larger than the original external dimensions. If the input external dimension is smaller than the original external dimension, it is subtracted from the original value by the difference between the above two values and displayed on the screen (step S124). FIG. 17 shows the screen when the input external dimensions are larger than the original external dimensions, that is, after being enlarged. As shown in FIG. 17, the reference position X of the processing portion included in the shaded portion, that is, the change target surface
The component values are uniformly added by the difference between the above two values, and each processed portion is displayed. On the other hand, if the input external dimensions are changed in the Y direction (step S12)
5) Instruct the extension position in the Y direction with a mouse or the like (step S126). If the input external dimensions are larger than the original external dimensions, the Y component values of the reference positions of all the processed parts on the lower side from the designated Y coordinate are the original values and only the difference between the above two values. If the external dimensions are smaller than the original external dimensions, the difference between the two values is subtracted from the original value and the result is displayed on the screen (step S127). After that, the changed external dimensions and the value of the reference position of the processed portion included in the changed area are re-registered after the component data on the computer memory is corrected (step S128). Then, the part data is displayed again (step S129). Thus, the edited figure is confirmed by displaying it on the display 25 as needed.

Next, the part data on the computer memory is output to the shape data storage unit 21 by the shape data output processing unit 28.

The part data output to the shape data storage unit 21 is, for example, the sheet metal working data generation device 30 shown in FIG.
Entered in. The sheet metal processing data generation device 30 is described in Japanese Patent Application Laid-Open No. 4-167932. The NC data conversion processing unit 31 included in the sheet metal processing data generation device 30 adds processing know-how of each NC machine tool, for example, each turret punch press, based on the input part data, converts the NC data into NC data. It is stored in the storage unit 32. By replacing the sheet metal processing data generation device 30 with each NC data processing machine, it can be applied not only to the turret punch press but also to a laser processing machine, a combined machine of turret punchless and laser processing machines, a plasma processing machine, etc. Is.

As is clear from the above description, according to the present invention, it is possible to display the shapes of sheet metal parts of various sizes and shapes on the screen as an easily recognizable pattern. In addition, by adding / deleting / changing the processing information by selecting the menu and changing the external dimension by specifying the extension position, the shape editing work can be performed with the minimum necessary input. further,
After confirming the edited result on the screen immediately,
C data can be created.

Therefore, it is possible to easily create error-free NC data in a short time without inputting complicated graphic information or processing know-how.

[0028]

According to the present invention, it is possible to realize a sheet metal working NC data generating device capable of easily and accurately generating accurate NC data in a short time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an NC data generation device for sheet metal processing of the present invention.

FIG. 2 is a block diagram showing another embodiment according to the present invention.

FIG. 3 is a front view showing a basic shape pattern.

FIG. 4 is a front view and a side view for explaining component data.

FIG. 5 is a chart showing part data.

FIG. 6 is a flowchart for explaining the operation of a pattern determination processing unit.

FIG. 7 is a chart showing input data extracted by a pattern determination processing unit and data in a pattern condition storage unit.

FIG. 8 is a flowchart for explaining the operation of the shape display processing unit.

FIG. 9 is a front view for explaining the outer shape display size stored in the pattern figure storage unit and the outer size of the component data stored in the shape data storage unit.

FIG. 10 is a diagram showing a display screen according to the present embodiment and a display screen according to the related art.

FIG. 11 is a flowchart for explaining an operation of adding / changing / deleting processing information in the shape edit processing unit.

FIG. 12 is a diagram showing a display screen when processing information is added.

FIG. 13 is a diagram showing a display screen when changing a processing dimension.

FIG. 14 is a flowchart for explaining an operation of changing a processing dimension in the shape edit processing unit.

FIG. 15 is a diagram showing a display screen when changing a processing dimension.

FIG. 16 is a diagram showing a display screen when an extension position is designated when changing a processing dimension.

FIG. 17 is a diagram showing a display screen after the change when the processing dimension is changed.

[Explanation of symbols]

 10 basic pattern registration device 11 basic pattern registration processing unit 12 pattern condition storage unit 13 pattern figure storage unit 20 shape editing device 21 shape data storage unit 22 shape data reading processing unit 23 pattern determination processing unit 24 shape display processing unit 25 display 26 shape Edit processing unit 27 Mouse 28 Shape data output processing unit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G06F 17/50 // B21D 28/00 Z 7623-5L G06F 15/60 310

Claims (4)

[Claims] 1. An NC data generating device for sheet metal processing, comprising a basic pattern registration device and a shape editing device, wherein the basic pattern registration device inputs a shape pattern of a typified sheet metal part, and its shape A basic pattern registration processing unit that classifies information for discriminating a pattern and information for displaying, a pattern condition storage unit that stores information for discriminating the shape pattern, and a display unit for displaying the shape pattern. And a pattern figure storage unit for storing information, wherein the shape editing device displays a shape pattern and an external dimension of a sheet metal part having a shape similar to the shape pattern of the typified sheet metal part, and processing information. A shape data storage unit that stores the part data, a shape data read processing unit that inputs the part data from the shape data storage unit, The pattern determination processing unit that searches the pattern condition storage unit for a shape pattern that matches the shape pattern of the generated component data, and extracts the information corresponding to the matched shape pattern for displaying from the pattern graphic storage unit. A shape display processing unit for displaying the sheet metal part in a maximum size in a graphic form on the display means based on the information, and changing the external dimensions of the displayed graphic and adding / changing / deleting the machining information. NC data generation for sheet metal processing, comprising: a shape edit processing unit for performing the above; and a shape data output processing unit for outputting the graphic processed by the shape edit processing unit to the shape data storage unit. apparatus. 2. The shape display processing unit displays the external dimensions and processing information of the component data at different scales for each of the X and Y directions based on the information to be displayed. Item 1. The NC data generation device for sheet metal processing according to Item 1. 3. The shape edit processing unit displays, on the display means, the addition of the processing information by a menu and displays the processing information and selects the menu, and the modification / deletion of the processing information is performed by a pointing device. The sheet metal working NC data generation device according to claim 1, wherein the NC data generation device is performed by designating. 4. The shape editing processing unit specifies all the dimensions on the surface to be modified by designating the modification of the dimension on the display means by designating only the modified dimension and the modification start position. The sheet metal working NC data generation device according to claim 1, wherein the value of the processing position of the processing information is changed by an amount corresponding to the change of the outer dimension, and the changed figure is displayed.