JPH09160625A - Nc data generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform metal mold arranging wark. SOLUTION: A figure shape deciding mechanism 11 decides a figure shape by taking figure shapes in similar relation with a figure element extracted from component expansion drawing data out of pieces of characteristic information on previously set figure shapes at a user's request. A metal mold selecting mechanism 12 has plural metal mold selection rules wherein which metal mold is selected for one shape is set according to user's requests and applies the metal mold selection rules in order to the graphic shape decided by the graphic shape deciding mechanism 11 to select a metal mold meeting conditions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC data creating device for creating NC data used in a sheet metal working machine using a die such as an NC turret punch press working machine.

[0002]

2. Description of the Related Art N used in an NC processing machine for processing parts in accordance with design drawings (part development drawing data)
It is necessary to create NC data for the C processing machine. When the NC processing machine to be used is a turret punch press, it is necessary to assign information on a die used for processing parts to all graphic elements of the parts development view data. The work of allocating die information is called die placement.

FIG. 12 is an explanatory view showing the flow of a conventional die arrangement in a CAM system. First, the figure C of the part
CA of the parts development drawing data 1 created as AD data
Read by M system. A fixed-shape figure element is discriminated by the fixed-shape discriminating mechanism 2 from the read-out parts development view data.

Here, the fixed shape discriminated by the fixed shape discriminating mechanism 2 is generally of three types such as a round hole, a square hole and a straight line, which have the same shape as a die owned by the NC turret punch press. Then, the element whose bold line is determined to be a fixed shape,
The thin line is an element determined to be out of the fixed shape. With respect to the determined fixed-shape graphic element, the fixed-shape automatic mold placement mechanism 3 automatically selects and allocates a mold from a list of molds owned by the turret punch press of the CAM system.

For the graphic elements other than the fixed shapes which are not discriminated by the fixed shape discriminating mechanism 2, the person in charge of the CAM data manually uses the manual die arranging mechanism 4 for each one of the graphic elements. Allocate molds by operation. In the manual operation of the manual die arrangement mechanism 4, the graphic elements to which the die are to be assigned are designated one by one, and then the die to be assigned is designated.

When the dies are allocated to all the graphic elements of the parts development view data, the parts processing NC data output mechanism 5 outputs the NC data for the turret punch press according to the information of the allocated dies.

[0007]

However, in the conventional NC data creating apparatus, it is not possible to automatically arrange the molds for all the graphic elements. That is, shapes other than fixed shapes such as round holes, square holes, and straight lines are not discriminated.

Further, a mold that matches the determined fixed shape,
This is because the matching die is not placed unless it is a die that is machined by one punch. Furthermore, as a substitute for a matching die, when punching with one die, that is, when performing punching a plurality of times, the selection criterion of the die to be used cannot be set based on the user's request.

Further, when performing a combination process using a plurality of molds, a combination of substitute molds cannot be set based on a user's request. Further, the selection and combination of molds when punching by one mold or when performing a combination processing using a plurality of molds vary depending on the size of the graphic element, but the selection and combination of the molds against the change in size. There is no decision mechanism of.

For these reasons, since it is not possible to automatically assign dies to all the graphic elements of the parts, most of the die placement work is done manually by the user.

[0011]

In order to solve the above-mentioned problems, the present invention provides NC data for creating NC data by allocating a die suitable for a figure shape to a figure element in the exploded view data. In the creation device, a means for storing characteristic information of a graphic shape set in advance based on a user's request, a means for extracting a graphic element for which a graphic shape is to be discriminated from the exploded view data, and the storing means. The present invention further comprises means for extracting a figure shape having a similar relationship to the extracted figure element from among the given figure shapes and discriminating the figure shape in the component exploded view data.

Further, in correspondence with the characteristic information of the graphic shape which is set in advance based on the user's request,
Means for storing a plurality of mold selection rules, which are set based on a user's request, which mold should be selected for one shape, and the stored mold for the determined figure shape And means for sequentially applying the selection rules and selecting a die that matches the conditions.

Further, a means for disassembling the figure shape and storing a plurality of die combination rules which are set based on a user's request as to how to combine the dies corresponding to the decomposed figure shape. A means for disassembling the determined figure shape, and a means for sequentially applying the stored die combination rules to the decomposed figure shape and selecting a die that matches the conditions Is.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the configuration of an NC data creating device according to a first embodiment of the present invention. In the figure, the graphic display device 6 displays parts development view data, mold information, operation results of mold placement work, and the like on a screen.

The keyboard 7 and the mouse 8 provide a user with an input means for a die placement operation. Figure processing device 9
Performs display data output to the graphic display device 6 and processing of graphic data in response to an operation input from the keyboard 7 or mouse 8. NC data processing device 10
Is the core of the NC data creation device of the first embodiment, and is composed of the following four mechanisms.

That is, the graphic shape discrimination mechanism 11 discriminates the graphic element of the parts development view data. Mold selection mechanism 12
Selects a die suitable for the shape of the graphic element determined by the graphic shape determination mechanism 11. Mold placement mechanism 13
Arranges information on the mold selected by the mold selection mechanism 12 on the graphic element having the shape determined by the graphic shape determination mechanism 11.

The NC data output mechanism 14 outputs NC data for a turret punch press for machining a part based on the part development view data and the mold information arranged in the graphic elements of the part development view data. FIG. 2 shows the graphic shape discriminating mechanism 1
2 is a block diagram showing a configuration of No. 1. The graphic shape determination mechanism 11 defines and stores a graphic shape to be determined based on a user's request, and determines whether or not the stored graphic shape and the graphic shape of the exploded view data have a similar relationship. It is a mechanism for inspecting whether or not it is composed of the following four devices.

The graphic shape defining device 15 sets the characteristics of the graphic judged by the graphic shape judging mechanism 11, for example, the conditions of the graphic elements forming the graphic based on the user's request.
The user-defined graphic shape storage device 16 stores and stores the characteristic information of the graphic shape set by the graphic shape definition device 15. The figure shape extraction device 17 extracts a figure element to be a figure shape determination target from the component development view data.

The graphic shape comparing device 18 determines that the graphic shape having a similarity relationship with the shape indicated by the graphic element extracted by the graphic shape extracting device 17 is the user-defined graphic shape storing device 1.
Check whether it is stored in 6. FIG. 3 is a block diagram showing the configuration of the user-defined graphic shape storage device 16. The user-defined graphic shape storage device 16 is a device that stores a plurality of characteristic information of graphic shapes set based on a user's request so that the graphic shape determination mechanism 11 can determine various graphic shapes.

First, the shape identification mechanism 19 is created based on the user's request. The shape identifying mechanism 19 is created one by one for each figure shape based on the user's request, and is composed of the following three elements. The shape identification name 20 and the shape identification number 21 are identification information set for the graphic element that is the shape determination target.

The shape constituent graphic element attribute 22 is an attribute of a graphic element forming a shape, and is composed of the following three elements. The graphic element shape 23 is N in this embodiment.
It is the minimum unit of the graphic element handled by the C data creation device, and is the distinction of shapes such as circles, arcs, and straight lines. The connected graphic element shape 24 indicates the shape of an adjacent graphic element.

The connected graphic element condition 25 is a condition between graphic elements that form a shape, and the angle between graphic elements, the shape condition of adjacent graphic elements, for example, the linear part of an oval hole is 1 / 2 arcs and so on. The feature of the shape identification mechanism 19 having the above-mentioned configuration is that it does not have a specific dimension value regarding the graphic element.

As a result, the graphic shape comparison device 18 described with reference to FIG. 2 is a device for inspecting whether or not the graphic shapes are similar to each other. Therefore, even when it is desired to distinguish a plurality of similar shapes having different sizes, the shape identification is performed. This can be dealt with by creating one mechanism 19. FIG. 4 is a processing flowchart of the NC data creation device according to the first embodiment described above.

First, the parts development view data reading process 26
At, a graphic element is read from the exploded view data. In the part graphic shape determination processing 27, the shape of the incorporated graphic element is determined, and the shape determination result is added to the graphic element. The part graphic shape determination processing 27 will be described in detail later.

In the optimum die selection process 28, a die usable for machining is selected from the dies possessed by the turret punch press machine according to the discrimination result of the shape added to the graphic element. In the selected mold information allocation process 29, information about the mold selected by the optimum mold selection process 28 is added to the graphic element. Further, the figure of the selected die is added to the figure element.

In the NC data output processing 30, NC data for the turret punch press is output based on the information about the die attached to the graphic element and the dimension value and the coordinate value of the graphic element. Next, details of the part graphic shape determination processing 27 will be described. Here, the part surrounded by the dotted line in FIG. 4 is a flowchart showing the details of the part graphic shape determination processing 27.

The part graphic shape discrimination processing 27 is shown in FIGS.
This is an automatic discrimination process of the shape of the part performed by using the figure shape discrimination mechanism 11 described in the above. First, as a preparation for the automatic shape determination processing, the graphic shape definition processing 31 is executed. In the figure shape defining process 31, the shape to be discriminated based on the user's request is set in the shape discriminating mechanism 19 by using the user-defined figure storing device 16 constituting the figure shape discriminating mechanism 11.

The shape identifying mechanism 1 determines the figure shape that the user determines to be necessary by the figure shape defining process 31 described above.
By setting it to 9, it is possible to distinguish various shapes. Next, in the graphic shape extraction processing 32, the graphic element to be the placement destination of the mold is extracted from the component development view data. In the graphic shape comparison processing 33, it is possible to automatically discriminate various shapes by inspecting whether a shape having a similar relationship to the shape indicated by the extracted graphic element is set in the shape identification mechanism 19.

As described above, in the NC data creating apparatus according to the first embodiment of the present invention, a mechanism for creating the graphic shape of the shape identifying mechanism 19 in the graphic shape determining mechanism 11 based on the user's request is used. It is possible for the NC data creation device to discriminate free-form shapes that are not shapes. FIG.
FIG. 6 is a block diagram showing a configuration of a mold selection mechanism as a second embodiment of the present invention.

In the second embodiment, a mechanism for inputting a user's request is added to the mold selection mechanism 12 described in the first embodiment with reference to FIG. First, the user mold selection defining device 34 can set a mold selection rule based on a user's request. User mold selection device 3
5 is an optimum die for the figure element extracted from the figure shape extracting device 17 according to the die selection rule set by the user die defining device 34 from among the dies owned by the turret punch press machine. Select a type.

FIG. 6 is a block diagram showing the configuration of the user mold selection device 35. The user mold selection device 35 sets a plurality of mold selection rules by assigning a priority to each shape range of a graphic shape and a size range of a graphic element based on a user's request, and conventionally selects one shape. 1 mold can be made
Although it was a type, it is a device that allows selection of molds from various conditions.

With this apparatus, it is possible to automatically arrange the molds for the graphic shape under the condition where the molds could not be arranged automatically. First, the shape-specific mold selection mechanism 36 is created for each type of graphic shape based on a user's request. The shape-specific mold selection mechanism 36 is composed of the following three elements for selecting a mold.

The shape identification number 37 is the shape identification number 21 of the shape identification mechanism 19 described in FIG. 3 added to the graphic element by the graphic shape determination mechanism 11 described in FIG. Is information that correlates. For the same figure shape, the selected mold may be changed depending on the dimension value. For this reason, the same shape identification dimension 38 is used to identify which shape-specific die selection mechanism 36 corresponds to a pair with the shape identification number 37 when the die selection rules are divided even though they have the same shape. Information.

The mold selection rule 39 sets conditions of a mold to be selected for a specified shape, for example, the shape of the mold, the attributes of the mold, and the overlapping condition of the molds. A plurality of mold selection rules 39 can be set for one shape. FIG. 7 is a processing flow chart of the mold selection mechanism 12 showing a processing flow of the NC data creation system according to the second embodiment.

First, in the figure shape extraction process 40, the figure element having the same value of the shape identification number 21 added to the figure element by the part shape discrimination process 27 of FIG. 4 is extracted from the parts development view data. Next, in the shape / dimension inspection processing 41, the shape and size of the graphic element extracted in the graphic shape extraction processing 40 from the shape-specific mold selection mechanism 36 created in advance based on the user's request are applicable. One of the shape-specific mold selection mechanisms 36 to be selected is selected.

In the mold selection process 42, a mold matching the condition of the mold selection rule 39 set in the selected shape-specific mold selection mechanism 36 is selected from the molds owned. Here, only when a plurality of mold selection rules 39 are set, the condition is changed to the next set mold selection rule 39 until a mold matching the conditions of the mold selection rule 39 is found. And select the mold.

FIG. 8 is an explanatory view showing an example of making the shape-specific die selection mechanism 36. Here, an application example will be described in which the shape-specific mold selection mechanism 36 is created as shown in FIG. 8 based on a user's request. Example 1: The shape-specific die selection mechanism 36 applied to a round hole having a radius of 50 mm is the top of the table, and the corresponding die selection rules 39 are applied in the order of (1) and (2).

Therefore, the mold to be selected is (1) "direct" of the mold selection rule 39, and the radius is 50 m.
The round mold of m is selected as the optimum mold. 50mm radius
If the round die is not owned, it becomes the (2) “nibbling” of the die selection rule 39, and a round die having a radius of 50 mm or less and capable of nibbling is selected as the optimal die.

Example 2; The shape-specific mold selection mechanism 36 applied to a square hole of X = 50 mm and Y = 20 mm is the third from the top of the table, and the corresponding mold selection rule 39 is (1). , (2), (3) in that order. Therefore, the mold to be selected is (1) “direct” of the mold selection rule 39, and X = 50 mm, Y = 20.
The mm square is selected as the optimal mold.

When the square mold of X = 50 mm and Y = 20 mm is not owned, it becomes (2) "One-step overtaking" of the mold selection rule 39, and the die that can overtake X = 50 mm or less and Y = 20 mm. Is selected as the most suitable mold. Further, if the die that does not have the punching ability of X = 50 mm or less and Y = 20 mm is owned, (3) “Multiple punching” of the die selection rule 39 is performed, and X = 50 mm or less,
A die capable of overtaking with Y = 20 mm or less is selected as the optimal die.

As in the above example, a mechanism capable of defining a plurality of mold selection rules 39 as required enables the selection of the optimum mold from among the molds in possession, and the automatic optimization of various shapes. The mold can be arranged. As described above, according to the second embodiment of the present invention, the shape-specific mold selection mechanism 36 is created in the user mold selection device 35 based on the user's request, and the manufacturing know-how is obtained. Automatic placement of molds is possible.

Further, since the mold selection rule 39 can be set as required based on the user's request, it is possible to automatically select the mold which the user considers to be optimal for various conditions of the figure shape. . Next, a third embodiment of the present invention will be described. In the third embodiment, a combination of a plurality of molds can be selected based on a user's request.

FIG. 9 is a block diagram showing the configuration of a user mold selecting device as the third embodiment of the present invention. In the third embodiment, a mechanism for selecting and arranging a plurality of mold combinations based on a user's request is added to the user mold selecting device 35 described in the first embodiment with reference to FIG. ing.

The shape-specific die selection mechanism 36 is created for each shape and each dimension based on the user's request, as in the second embodiment. Then, the mold selection mechanism 3 for each shape
6, the figure shape decomposing device 43 and the die combination rule 4
4 has been added. The figure shape decomposing device 43 decomposes the figure shape, for example, by decomposing an oval-shaped hole into an arc portion and a straight portion in order to determine a combination of dies.

Here, the specification of how to decompose the graphic shape also complies with the user's request. The mold combination rule 44 specifies what kind of mold should be selected for each decomposed figure shape. The die combination rule 44 can be created in a one-to-one relationship with the die selection rule 39, and a plurality of die combinations can be set.

FIG. 10 is a process flow chart of the user mold selection device 35 showing the flow of the process of the NC data creation device of the third embodiment. First, the graphic shape extraction processing 40
Then, the graphic element having the same value of the shape identification number 21 added to the graphic element by the part shape discrimination processing 27 described in FIG. 4 is extracted from the exploded view data.

Next, the shape / dimension of the graphic element previously extracted from the shape-specific mold selection mechanism 36 created in advance based on the user's request by the shape / dimension inspection processing 41 is applicable. One of the shape-specific mold selection mechanisms 36 is selected. In the selected shape-specific die selecting mechanism 36, the figure shape decomposing process 46 decomposes a figure shape according to a combination of dies based on a preset user request.

Then, in the mold selection process 42, according to the mold selection rule 39 and the mold combination rule 44 set in advance based on the user's request.
Select a mold that can be placed from the molds you own. Here, the mold combination definition process 45 is a process of creating a condition of a mold to be combined as a mold combination rule 44 based on a user's request.

FIG. 11 is an explanatory view showing an example of making the shape-specific die selection mechanism 36. Here, in the table shown in FIG. 11, a rule for an oval hole is set, and the shape of the oval hole is decomposed into a circular arc portion and a straight line portion by the graphic shape decomposition processing 46. The dimension of the straight part is 20 mm
In the case of the oval hole of No. 1, from the mold selection rule 39 (1) and the mold combination rule 44 (1), as the highest priority candidate,
Select an oval type in which the radius of the circular arc portion is the same in the straight portion 20 mm.

When there is no oval die that meets the above conditions, (2) of the die selection rule 39 and the die combination rule 44
From (2) of No. 2, a nibbling round shape having the same radius as the arc portion is selected. Furthermore, if there is no corresponding mold,
Mold selection rule 39 (3) and mold combination rule 4
From (3) of 4, a round die capable of nibbling the arc portion, and a square die capable of punching out with the diameter of the oval hole arc portion and the height of the die matched are selected.

By using the mold selection rule 39 and the mold combination rule 44 as in the above example, it becomes possible to automatically arrange the molds and the combination of molds based on the user's request. . As described above, according to the third embodiment of the present invention, the user mold selection device 35 using the mold combination rule 44 automatically selects the combination of molds based on the user's request. It has become possible.

In the first, second, and third embodiments described above, an example of the NC data creating apparatus for the turret punch press working machine is shown, but a laser compound machine using a die is also used. It is also applicable to other NC data creation devices for sheet metal working machines. Further, the figure shape discrimination mechanism 11 in the first embodiment can be applied to the figure processing function in the CAD device as a pattern collating function of a designated figure shape.

[0053]

As described above, according to the present invention, the characteristic information of the graphic shape is set based on the user's request, and the graphic shape is discriminated according to the characteristic information. It is possible to discriminate the figure according to the user. In addition, the rule of which mold to select for a certain figure shape is set based on the user's request, and the mold is selected according to this mold selection rule.
The most suitable mold can be selected according to the mold the user has.

Furthermore, the rule of how to disassemble the figure shape and how to combine the dies in correspondence with the decomposed figure shape is set based on the user's request, and the dies are combined according to the die combination rule. Since the mold is selected, it is possible to select the optimum mold within the range of the mold held by the user, even for the shape that cannot be used by the mold held by the user alone.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an NC data creation device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a figure shape determination mechanism.

FIG. 3 is a block diagram showing the configuration of a user-defined graphic shape storage device.

FIG. 4 is a processing flowchart of the NC data creation device according to the first embodiment.

FIG. 5 is a block diagram showing a configuration of a mold selection mechanism as a second embodiment of the present invention.

FIG. 6 is a block diagram showing the configuration of a user mold selection device.

FIG. 7 is a processing flowchart of a mold selection mechanism showing a processing flow of the NC data creation device according to the second embodiment.

FIG. 8 is an explanatory diagram showing an example of creating a shape-specific mold selection mechanism according to the second embodiment.

FIG. 9 is a block diagram showing a configuration of a user mold selection device as a third embodiment of the present invention.

FIG. 10 is a processing flowchart of a user mold selection device showing a processing flow of the NC data creation device according to the third embodiment.

FIG. 11 is an explanatory diagram showing an example of making a shape-specific mold selection mechanism according to the third embodiment.

FIG. 12 is an explanatory diagram showing a flow of a conventional die arrangement in the CAM system.

[Explanation of symbols]

 11 Graphic Shape Discrimination Mechanism 16 User Defined Graphic Shape Storage Device 17 Graphic Shape Extraction Device 18 Graphic Shape Comparison Device

Claims (3)

[Claims] 1. An NC data creation apparatus for creating NC data by allocating a die suitable for a graphic shape to a graphic element in the exploded view data, and a graphic preset according to a user's request. A means for storing the characteristic information of the shape, a means for extracting a graphic element to be a discrimination object of the graphic shape from the exploded view data, and a similar relationship with the extracted graphic element from the stored graphic shapes. An NC data creating apparatus, comprising: means for extracting a certain figure shape to determine the figure shape in the exploded view data. 2. The NC data creation device according to claim 1, wherein which mold is selected for one shape in correspondence with characteristic information of a graphic shape that is preset based on a request from the user. Means for storing a plurality of mold selection rules set based on the user's request, and the stored mold selection rules are sequentially applied to the determined figure shape to meet the condition. An NC data creating apparatus comprising: a means for selecting a mold. 3. The NC data creating apparatus according to claim 2, wherein a figure shape is disassembled, and how to combine the dies corresponding to the decomposed figure shape is set based on a user's request. Means for storing a plurality of mold combination rules, means for disassembling the determined graphic shape, and sequentially applying the stored mold combination rules to the decomposed graphic shape to meet the conditions. An NC data creating apparatus comprising: a means for selecting a mold.