JPH0811017A - Method and device for preparing data to manufacture electrode for and data to control electric discharge machine - Google Patents

Abstract

PURPOSE:To provide a method and a device for preparing the data to manufacture electrodes for and the data to control an electric discharge machine capable of automatically preparing the NC data required in manufacturing the electrodes and in machining a die product. CONSTITUTION:The shape type and the electrode parameters of a part 3 to be machined using an electrode 1 arc defined, the two-dimensional sectional shape of the part 3 to be machined is selected and instructed, and the coordinate position of the part 3 to be machined is instructed. Then, the three-dimensional shape of the electrode 1 is calculated based on the shape type of the part 3 to be machined, the two-dimensional sectional shape and the parameters of the electrode. The drawing of the electrode based on the three-dimensional shape of the electrode 1 is prepared, and the numerical control data in manufacturing the electrode are generated, and the numerical control data in executing the electric discharge machining are prepared based on the numerical control data in manufacturing the electrode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for generating electrode manufacturing data for an electric discharge machine and electric discharge machine control data.

[0002]

2. Description of the Related Art In recent years, an electric discharge machine has been used to machine a die product, and an electrode attached to the electric discharge machine has a three-dimensional shape corresponding to a portion to be machined of the die product. It has a shape. In general, these electrodes are manufactured by designing them manually by using a CAD / CAM device, and an operator who performs the designing and manufacturing work meticulously considers a processed part to be processed in advance. In addition, the two-dimensional cross-sectional shape of the machined part is shown while considering the electrode parameters required for EDM, that is, the electrode gap such as the discharge gap amount around the electrode, the swing gap amount, and the relief amount in the height direction. After the three-dimensional shape required by the electrode is calculated by correcting the figure data, the numerical control data (hereinafter referred to as NC data) for manufacturing the electrode is generated and then the electrode is manufactured. There is. When the required electrode is too fine and is composed of a large number of graphic data, it was obtained after designing and manufacturing an electrode of an intermediate shape with a part of the shape omitted. An electrode having a final shape is also manufactured by adding finishing processing such as sanding to the electrode.

Furthermore, the electrode manufactured according to the above procedure is attached to an electric discharge machine and then used for processing a die product. NC data for instructing the attachment of the electrodes and the operation of the electric discharge machine is required. The NC data required at this time is generally generated by the operator while individually calculating the electrode attachment position data and the like in another work that has nothing to do with the work at the time of manufacturing the electrode. Has become.

[0004]

By the way, in the above-mentioned conventional example, a series of operations required for electrode production, namely,
Since the operator performs the work of calculating the three-dimensional shape of the electrode based on the electrode parameter and the graphic data and then generating the NC data, there has been a problem that it takes a long time to manufacture the electrode.
Further, when the electrode shape is complicated, it takes a long manufacturing time and the machining accuracy is deteriorated, which requires additional machining which is troublesome. Furthermore, since the NC data of the electric discharge machine has to be generated separately, it is troublesome and the time required to start the machining of the die product is prolonged.

The present invention was devised in view of these inconveniences, and electrode production data for an electric discharge machine capable of automatically generating NC data required for electrode production and die product processing. Another object of the present invention is to provide a method and a device for generating electric discharge machine control data.

[0006]

A method of generating electrode manufacturing data for an electric discharge machine according to the present invention defines a shape type of a processed portion to be processed by using an electrode and electrode parameters,
In addition, after selecting and instructing the two-dimensional cross-sectional shape of the processed part, the three-dimensional shape of the electrode is calculated based on the shape type of the processed part and the two-dimensional cross-sectional shape and the electrode parameters, and the three-dimensional shape of the electrode is calculated. It is characterized in that numerical control data at the time of manufacturing an electrode is generated after generating an electrode drawing based on the above.

Then, the device for producing the electrode manufacturing data for the electric discharge machine selects the defining means for defining the shape type and the electrode parameters of the processed part to be processed by using the electrode and the two-dimensional cross-sectional shape of the processed part. And a shape designating means for designating,
A shape calculation unit that calculates the three-dimensional shape of the electrode based on the shape type and the two-dimensional cross-sectional shape of the processed part and the electrode parameters, a drawing generation unit that generates an electrode drawing based on the three-dimensional shape of the electrode, and an electrode. An electrode manufacturing data generating means for generating numerical control data at the time of manufacturing the electrode based on the drawings.

On the other hand, the method of generating the electric discharge machine control data defines the shape type and electrode parameters of the machined part to be machined by using the electrode, and selects and instructs the two-dimensional sectional shape of the machined part. In addition, after instructing the coordinate position of the processed part, the three-dimensional shape of the electrode is calculated based on the shape type and the two-dimensional cross-sectional shape of the processed part and the electrode parameters, and the electrode drawing based on the three-dimensional shape of the electrode. Is generated to generate the numerical control data at the time of manufacturing the electrode, and the numerical control data at the time of electric discharge machining is generated based on the numerical control data at the time of manufacturing the electrode.

Further, the electric discharge machine control data generating device selects a defining means for defining a shape type and electrode parameters of a machined part machined by using an electrode and a two-dimensional cross-sectional shape of the machined part. Shape instructing means for instructing, coordinate instructing means for instructing the coordinate position of the work part, and shape calculating means for calculating the three-dimensional shape of the electrode based on the shape type of the work part and the two-dimensional cross-sectional shape and electrode parameters. And a drawing generation means for generating an electrode drawing based on the three-dimensional shape of the electrode, an electrode manufacturing data generation means for generating numerical control data during electrode manufacturing based on the electrode drawing, and a numerical control data during electrode manufacturing. And a machining machine control data generating means for generating numerical control data at the time of electric discharge machining.

[0010]

According to the method and apparatus for generating the electrode production data for the electric discharge machine according to the present invention, the electrode to be produced based on the given shape type and two-dimensional cross-sectional shape of the processed part and the electrode parameters. Since the three-dimensional shape is calculated, the electrode drawing is generated based on the three-dimensional shape of the electrode, and then the NC data at the time of manufacturing the electrode is automatically generated based on the generated electrode drawing. Further, according to the method and the device for generating the electric discharge machine control data, the electric discharge machining required by the electric discharge machine when the electric discharge machining is performed using the manufactured electrode together with the NC data at the time of manufacturing the electrode is performed. NC
Data is also automatically generated.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an external view showing the relationship between an electrode 1 for an electric discharge machine according to an embodiment of the present invention and a work part 3 in a die product 2 produced by electric discharge machining using the electrode 1. It is a perspective view, and the mold product 2 in the drawing is shown only a part thereof. With respect to the mold product 2 in FIG. 1, the work piece 3 having a predetermined depth, which is circular in plan view, that is, a so-called hole (rotating body), is used, when the circular electrode in plan view 1 is used. Has been made. FIG. 2 is an external perspective view showing the relationship between the electrode 1 and the processed portion 3 according to another embodiment. For the mold product 2 of this embodiment, the rectangular electrode 1 in plan view is used. In addition, the processed portion 3 having a rectangular shape in plan view, that is, a so-called groove is to be produced. Further, FIG. 3 is a cross-sectional view of an essential part for explaining the electrode parameters required during electric discharge machining, and between the electrode 1 and the processed part 3 of the mold product 2, the electric discharge gap amount a and the swinging. Electrode parameters such as the gap amount b and the escape amount c are set.

First, a device for generating electric discharge machine control data will be described with reference to FIG.

FIG. 4 is a functional block configuration diagram showing an electric discharge machine control data generating apparatus. This generating apparatus is a CAD.
/ CAM device using a microcomputer. That is, this electric discharge machine control data generation device defines a definition means 5 for defining the shape type and electrode parameters of the workpiece 3 to be machined using the electrode 1, and the two-dimensional cross-sectional shape of the workpiece 3. A shape instructing means 6 for selecting and instructing, a coordinate instructing means 7 for instructing a coordinate position of the processed part 3 with respect to an origin position set on the die product 2, and a given shape type of the processed part 3. Shape calculation means 8 for calculating the three-dimensional shape of the electrode 1 based on the two-dimensional cross-sectional shape and electrode parameters, drawing generation means 9 for generating an electrode drawing based on the calculated three-dimensional shape of the electrode 1, and electrode An electrode manufacturing data generating means 10 for generating NC data at the time of manufacturing the electrode based on the drawing, and a machining machine control data generating means 11 for generating NC data at the time of electric discharge machining based on the NC data at the time of manufacturing the electrode are provided. To have.

At this time, each of the defining means 5, the shape designating means 6, and the coordinate designating means 7 is constituted by an input device including a keyboard, etc., and the shape calculating means 8, the drawing generating means 9, and the electrode fabrication. Data generation means 1
0 and each of the processing machine control data generating means 11 are composed of a central processing unit (CPU). In addition, the electric discharge machine control data generating device is configured so that the defined workpiece 3
The first storage means 12 for storing the shape type and the electrode parameter of the above, the second storage means 13 for storing the instructed two-dimensional cross-sectional shape of the processed portion 3, and the calculated three-dimensional shape of the electrode 1 are stored. Third storage means 14, fourth storage means 15 for storing the generated electrode drawing, fifth storage means 16 for storing the coordinate position of the instructed workpiece 3, and NC for producing the generated electrode. A first data storage means 17 for storing data and a second data storage means 18 for storing NC data at the time of electric discharge machining are provided, and first to fifth storage means 12 to 16, first and second storage means are provided. Data storage means 17, 1
Each of 8 and 8 is composed of a RAM.

Further, although not shown in the drawing, the generating device is provided with a ROM or a ROM storing various graphic data designed in advance so as to match the two-dimensional cross-sectional shape of the workpiece 3 to be selected and designated. A display device such as a display for displaying graphic data and instruction contents, or an output device such as a printer for outputting the generated electrode drawing and various NC data is also provided. In the above description, the coordinate instruction means 7 and the fifth storage means 16, the processing machine control data generation means 11 and the second data storage means 18 are described.
It is said that the device for generating electric discharge machine control data is configured by including and, but if these means are not provided, the device is configured only as a device for generating electrode manufacturing data for an electric discharge machine.

Next, a method of generating electric discharge machine control data will be described with reference to the flow chart shown in FIG.

First, the electrode 1 after being manufactured by the defining means 5
The shape type and the electrode parameters of the processed portion 3 to be processed are input and defined using (S1). That is,
At this time, whether it is a hole or a groove as shown in FIG. 1 or FIG.
The discharge gap amount a, the swing gap amount b, and the relief amount c in the height direction shown in FIG. 3 are defined as the electrode parameters, and the defined shape type of the processed portion 3 and the electrode parameters are 1 is stored in the storage unit 12. Then, it is judged whether or not the defined shape type of the processed portion 3 is a hole (S2), and if it is judged that the hole is a hole, the figure data previously designed by CAD is One of the two-dimensional cross-sectional shapes showing a hole is selected from among them by the shape designating means 6 and designated (S3).

Further, when it is judged that the defined shape type of the processed portion 3 is not the hole but the groove as shown in FIG. 2, the figure data also designed by CAD is selected. Two two-dimensional cross-sectional shapes showing the groove, for example, two two-dimensional cross-sectional shapes in the x direction and the y direction in FIG. 2 are selected by the shape designating means 6 and then designated (S4, S5). Then, the instructed work piece 3
The two-dimensional cross-sectional shape of is stored in the second storage unit 13. Further, depending on the coordinate designating means 7, the mold product 2
X, Y of the work part 3 with respect to the origin position set above,
The coordinate position in the Z direction is designated (S
6) It is determined whether or not the coordinate position instruction is completed (S7). That is, at this time, the processed portion 3 to be electric discharge machined using the electrode 1 which is currently being manufactured.
Since there may be multiple points, the coordinate position can be repeatedly specified. Then, the coordinate position of the instructed work part 3 is stored in the fifth storage part 16.

Subsequently, depending on the shape calculation means 8, the shape type and the two-dimensional cross-sectional shape and the electrode parameter of the processed portion 3 are read from the first and second storage means 12 and 13, and the offset conversion of the discharge gap amount is performed. After the conversion of the swing gap amount, the three-dimensional shape of the electrode 1 is automatically calculated based on the above various data (S8). Then, the calculated three-dimensional shape of the electrode 1 is stored in the third storage unit 14. Further, the drawing generation means 9 automatically generates an electrode drawing based on the three-dimensional shape by reading the three-dimensional shape of the electrode 1 from the third storage means 14 and then giving the dimensions, and the fifth storage unit 16 is also provided. The coordinate position of the processed portion 3 is read from and written in the electrode drawing (S
9). When it is necessary to newly add or change the edit data in the electrode drawing, for example, the coordinate position of the processed portion 3, the edit data is instructed in S10. The electrode drawings thus generated are as illustrated in FIGS. 6 and 7, respectively, and are stored in the fourth storage unit 15.

Further, the electrode production data generating means 10 automatically generates NC data at the time of electrode production based on the electrode drawing read from the fourth storage section 15 (S11), and also the processing machine. Control data generation means 11
In some cases, the NC data at the time of electric discharge machining is automatically generated based on the NC data at the time of manufacturing the electrode (S12). Then, the NC data at the time of manufacturing the electrode generated at this time is the first
While being stored by the data storage means 17, the NC data during electric discharge machining is stored by the second data storage means 18. After that, the electrode 1 is manufactured using the NC data at the time of manufacturing the electrode generated according to the above procedure, and the mold product 2 after the manufactured electrode 1 is attached to the electric discharge machine The processed part 3 is manufactured.

[0022]

As described above, according to the method and the apparatus for generating the electrode manufacturing data for the electric discharge machine according to the present invention, the shape type and the two-dimensional cross-sectional shape and the electrode parameters of the given workpiece are given. After the three-dimensional shape of the electrode to be manufactured is calculated based on the above, and the electrode drawing is generated based on the three-dimensional shape of the electrode, the NC data at the time of manufacturing the electrode is automatically generated based on the generated electrode drawing. Is generated. Therefore, it is not necessary to design and manufacture the electrodes manually by an operator, which takes a lot of time and labor, and the time required for manufacturing the electrodes can be shortened, and even if the electrodes have complicated shapes, they can be accurately manufactured. The effect that it can be produced is obtained.

Further, according to the electric discharge machine control data generating method and generating apparatus, the electric discharge required by the electric discharge machine when the electric discharge machining is performed using the manufactured electrode together with the NC data at the time of manufacturing the electrode. Since the NC data at the time of machining will also be automatically generated, it is not necessary for the operator to separately generate the NC data at the time of electric discharge machining by another work, and before the machining of the die product is started. There is also an effect that the time required can be significantly shortened.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a relationship between an electrode for an electric discharge machine according to an embodiment of the present invention and a processed portion of a die product manufactured by electric discharge machining using the electrode. is there.

FIG. 2 is an external perspective view showing a relationship between an electrode and a processed portion according to another embodiment.

FIG. 3 is a main-portion cross-sectional view for explaining electrode parameters.

FIG. 4 is a functional block diagram showing a device for generating electric discharge machine control data.

FIG. 5 is a flowchart showing a method for generating electric discharge machine control data.

FIG. 6 is an explanatory diagram showing an example of a generated electrode drawing.

FIG. 7 is an explanatory diagram showing another example of a generated electrode drawing.

[Explanation of symbols]

 1 Electrode 2 Mold product 3 Worked part

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshihiro Mohri 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Sharp Corporation (72) Inventor Toshio Nemoto 4-133, Atobe Honcho, Yao-shi, Osaka Corporate Manufacturing Systems Co., Ltd. (72) Inventor Tsunehiko Imoto 4-133, Atobe Honmachi, Yao City, Osaka Prefecture Corporate Manufacturing Systems Co., Ltd.

Claims (4)

[Claims] Claim: What is claimed is: 1. After defining a shape type and electrode parameters of a processed portion to be processed using an electrode, and selecting and instructing a two-dimensional cross-sectional shape of the processed portion, a shape type of the processed portion and A discharge characterized by calculating a three-dimensional shape of an electrode based on a two-dimensional cross-sectional shape and an electrode parameter, generating an electrode drawing based on the three-dimensional shape of the electrode, and then generating numerical control data when manufacturing the electrode. A method for generating electrode manufacturing data for a processing machine. 2. Definition means for defining a shape type and electrode parameters of a portion to be processed using an electrode, shape indicating means for selecting and instructing a two-dimensional cross-sectional shape of the portion to be processed, and a portion to be processed. Shape calculation means for calculating the three-dimensional shape of the electrode based on the shape type and the two-dimensional cross-sectional shape and the electrode parameters, drawing generation means for generating an electrode drawing based on the three-dimensional shape of the electrode, and based on the electrode drawing And an electrode manufacturing data generating means for generating numerical control data during electrode manufacturing. 3. A shape type and electrode parameters of a processed part to be processed by using an electrode are defined, and a two-dimensional cross-sectional shape of the processed part is selected and designated, and a coordinate position of the processed part is determined. After instructing, the three-dimensional shape of the electrode is calculated based on the shape type of the processed part and the two-dimensional cross-sectional shape and the electrode parameters, and the electrode drawing based on the three-dimensional shape of the electrode is generated to perform numerical control during electrode production. A method for generating electric discharge machine control data, which comprises generating data and generating numerical control data during electric discharge machining based on numerical control data during electrode production. 4. A defining means for defining a shape type and electrode parameters of a processed part to be processed by using an electrode, a shape designating means for selecting and instructing a two-dimensional sectional shape of the processed part, and a processed part. Coordinate indicating means for indicating the coordinate position of the electrode, shape calculating means for calculating the three-dimensional shape of the electrode based on the shape type and the two-dimensional cross-sectional shape of the processed part and the electrode parameters, and based on the three-dimensional shape of the electrode Drawing generation means for generating an electrode drawing, electrode production data generation means for generating numerical control data during electrode production based on the electrode drawing, and numerical control data during electrical discharge machining based on the numerical control data during electrode production An electric discharge machine control data generation device, comprising: a machining machine control data generation unit that generates the electric discharge machine control data.