JP3017209B1 - Wire electric discharge machine - Google Patents

Abstract

An object of the present invention is to provide a wire electric discharge machine capable of forming an NC program easily and without any increase in the amount of the program, and capable of machining a vertical different shape. A subprogram plane end point position generation means (8) constituting an upper / lower different shape generation means (7) performs a shape copying process on an input end point position of a program plane after figure conversion. Then, an end point position of the subprogram plane is generated and output to the subprogram plane graphic conversion means (9) to prepare for the creation of the shape of the subprogram plane. The subprogram plane graphic conversion means (9) performs graphic conversion for the subprogram on the end point position of the subprogram plane, obtains the end point position of the subprogram plane after the graphic conversion, and obtains the shape of the program plane. Create different subprogram plane shapes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire electric discharge machine capable of machining a workpiece to be subjected to wire electric discharge machining in which the upper surface and the lower surface have different shapes, that is, vertical and irregular shapes.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram of a conventional operating means, FIG. 10 is a partial detailed view of FIG. 9, FIG. 11 is a conventional numerical control program (hereinafter referred to as an NC program), and FIG.
FIG. 4 is a plan view showing upper and lower processing surfaces of a conventional example.

In a wire electric discharge machine, a power supply pulse is applied between a wire electrode and a work by a machining power supply to generate an electric discharge therebetween, thereby performing cutting, cutting, contouring, and the like on the work. Things.

Conventionally, this type of wire electric discharge machine has been developed as shown in FIG.
As shown in (1), it has an input unit 45, a storage unit 46, a processing command processing unit 47, an interpolation unit 48, and a servo control unit 49, and converts the setting from the NC program 41 and the operation panel 42 into a rotation command of the motor 44. The control device 43 is provided.

[0005] An outline of the control processing by the wire electric discharge machine configured as described above will be described with reference to FIG.

[0006] The NC program 41 includes a tool (not shown).
This is a program for instructing a movement command, figure conversion and various corrections. The movement command is usually a combination of a line segment, an arc, and the like, and represents a processing shape on a plane.

The graphic conversion is a function of converting a basic shape so as to obtain a desired finished shape by diverting a program (basic shape) of a certain finished shape in order to facilitate creation of an NC program. is there. For example, enlarge /
There are reduction, rotation, axis conversion, axis exchange, etc.

The various corrections are functions for correcting the whole or a part of the shape program so as to reduce errors due to the characteristics of machines and tools in order to improve the processing accuracy.
Examples include a function of correcting the arc at the corner so as to be in contact with the forward and backward movement commands, a function of correcting the interference of the tool, and the like.

The operation panel 42 can start, stop, reset, and set various operation parameters of the NC program 41. The parameter is, for example, an override value of the processing speed.

The operation of the NC program 41 and the operation panel 42 is inputted from the input means 45 to the control device 43 and stored in the storage means 46 or the processing command processing means 47
Passed directly to.

The machining command processing means 47 analyzes the operation command set by the operation panel 42 and the movement command defined by the NC program 41, and performs various conversions and corrections according to the definition stored in the storage means 46. It passes to the interpolation means 48.

The interpolating means 48 instructs the servo control means 49 for the amount of movement in each minute time period.

The servo control means 49 performs servo control so that the motor 44 follows the command from the interpolation means 48. The motor 44 operates a movable table and a vertical axis of the machine tool.

In this way, the workpiece is processed as specified by the NC program 41 and the operation panel 42.

Next, the configuration and operation of the upper / lower different-shape machining in the machining command processing means 47 will be described with reference to FIGS.
This will be described with reference to FIGS.

[0016] As shown in FIG.
Reference numeral 7 includes a semantic analysis unit 51, a graphic conversion unit 52, various correction units 53, and an interpolation data creation unit 54.

The semantic analysis unit 51 defines the shape (FIG. 12) of both the XY plane (program plane) and the UV plane (subprogram plane) input from the storage unit 46 or the input unit 45. From the NC program 41 as shown in FIG. 11, the end point position A → B → C → D of the shape of the program surface
(FIG. 4A) and the end point position a3 of the shape of the subprogram surface
→ b3 → c3 → d3 (FIG. 6 (d)) is calculated, and the figure
Output to

The graphic conversion means 52 converts the end point positions A → B → C → D of the program plane inputted from the semantic analysis means 51 (FIG. 4).
(a)) and the end point position a3 → b3 → of the subprogram surface shape
For c3 → d3 (FIG. 6 (d)), figure conversion is performed according to the figure conversion definition stored in the storage means 46, and the end point positions A1 → B1 → C1 → D1 (FIG. 4)
(b)) and the end point position a1 → b1 → of the shape of the subprogram surface
c1 → d1 (FIG. 4D) is calculated and output to the various correcting means 53.

The various correction means 53 are provided with an end point position A1 of the program plane input from the graphic conversion means 52 after the graphic conversion.
The correction stored in the storage means 46 for each of B1 → C1 → D1 (FIG. 4 (b)) and the end point positions a1 → b1 → c1 → d1 (FIG. 4 (d)) of the subprogram plane after the graphic conversion. Various corrections are performed according to the definition, the final end point position on the upper surface and the lower surface as shown in FIG. 2A is calculated, and output to the interpolation data generating means 54.

The interpolation data creation means 54 calculates interpolation data for each axis from the input end point positions of both sides,
Output to the interpolation means 48.

[0021]

However, in this conventional machining command processing means, two upper and lower shapes are converted from one to the other according to a certain rule (graphic conversion such as enlargement / reduction, rotation, correction, etc.). In the case of the vertical irregular shape processing in which the relationship is possible, there are the following problems.

The first problem is the complexity of creating an NC program. That is, since programs having both the program plane and the subprogram plane are always required, it takes time to create an NC program.

The second problem is an increase in the amount of programs. That is, always the program side and the subprogram side,
Since programs of both shapes are required, the amount of programs is increased by that amount, and in particular, when storing in the storage means, the storage capacity is reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wire electric discharge machine provided with a machining command processing means including a vertical irregular shape generating means which solves the above problems.

[0025]

SUMMARY OF THE INVENTION A wire electric discharge machine according to the present invention is a wire electric discharge machine capable of machining a workpiece to be subjected to wire electric discharge machining in which the upper surface and the lower surface are different in shape, that is, vertical and irregular shape machining. If two shapes are in a relationship that can be converted from one to the other according to a certain rule, such as graphic conversion such as enlargement / reduction, rotation, etc., and correction, the top and bottom can be changed by using only one side shape program. It is characterized in that it can be shaped.

The wire electric discharge machine according to the present invention comprises input means, storage means, machining command processing means and interpolation means, and the machining command processing means comprises a semantic analysis means, a graphic conversion means, a vertical irregular shape generating means. It is preferable that the vertical and irregular shape generating means include a subprogram plane end point position generating means and a subprogram plane graphic converting means.

The semantic analysis means calculates the end point position of the basic shape of the program surface from the NC program supplied from the input means or the storage means, and outputs it to the graphic conversion means. The graphic conversion is performed on the end position of the basic shape of the program surface, the end position after the graphic conversion of the program surface is calculated, and output to various correction means and the sub-program surface end position generation means. The program plane end point generating means generates the end point position of the subprogram plane by performing a shape copying process on the inputted program plane end point position of the input program plane in preparation for creating the shape of the subprogram plane. And outputs it to the subprogram plane graphic conversion means, which creates the shape of the subprogram plane. Because performs geometric transformation subprogram relative end point position of the sub-program plane, it is preferable that obtaining the end position after the geometric transformation of the sub-program plane.

Incidentally, the second to fourth embodiments each having the structure according to claims 4 to 6 will be described later.

As described above, according to the present invention, the NC program can be moved up and down simply by creating either the upper surface or the lower surface of the workpiece, for example, the shape program of the program surface and the graphic conversion definition for the subprogram surface. It is possible to perform different shape processing, and as compared with the case where a program representing the shape of the upper surface and a program representing the shape of the lower surface, that is, two shape programs are conventionally required, the NC program can be easily created and the NC program capacity can be reduced. Reduction can be achieved.

[0030]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of operating means of an embodiment of a wire electric discharge machine according to the present invention, FIG. 2 (a) is a model perspective view showing upper and lower surfaces to be machined according to this embodiment,
FIG. 3B is a perspective view showing a program surface on the lower surface of FIG. 4A and a subprogram on the upper surface based on the lower surface. FIG. 3 is an example of an NC program applied to the embodiment, FIG. 3A is a plan view showing upper and lower processing surfaces on which the graphic in FIG. 2 is processed by the NC program in FIG. 3;
Is the lower surface of the basic shape, (b) is the lower surface after figure conversion,
(C) is the upper surface according to (b), and (d) is the upper surface after figure conversion.

Referring to FIG. 1, in the present embodiment, input means 1, storage means 2, machining command processing means 3, and interpolation means 4
And

The storage means 2 stores NC programs and definitions of various conversions and corrections described later.

The input means 1 receives an NC program from an operation panel (not shown) or the like.

The interpolating means 4 converts the interpolation data for each axis for each minute time period by the amount of movement in that period.

The processing command processing means 3 comprises a semantic analysis means 5, a graphic conversion means 6, a vertically different shape generation means 7, various correction means 10, and an interpolation data creation means 11.

The semantic analysis means 5 receives the input of the NC program from the input means 1 or the storage means 2 and calculates the end point position of the basic shape on the program surface.

The graphic conversion means 6 performs graphic conversion for the input end point position in accordance with the graphic conversion definition stored in the storage means 2.

The various correction means 10 performs various corrections on the input end point position in accordance with the correction definition stored in the storage means 2.

The interpolation data creating means 11 calculates interpolation data for each axis from the input end point position.

The vertical irregular shape generating means 7 comprises a subprogram plane end point position generating means 8 and a subprogram plane graphic converting means 9.

The sub-program plane end point generating means 8 comprises:
By copying the input end point position of the program plane on the subprogram plane (shape copy processing), the same end point position as the program plane is generated on the subprogram plane.

The subprogram plane graphic conversion means 9 performs graphic conversion on the input end point position of the subprogram plane in accordance with the subprogram plane graphic conversion definition stored in the storage means 2, and as a result, the program plane And calculates an end point position having a different shape.

Next, the operation of this embodiment will be described with reference to FIGS. 1, 2, 3 and 4. FIG.

The semantic analysis means 5 calculates the end point position A of the basic shape of the program plane from the NC program shown in FIG. 3 which defines the shape of the XY plane (program plane) input from the storage means 2 or the input means 1. → B → C → D (FIG. 4 (a)) is calculated and output to the graphic conversion means 6.

The graphic conversion means 6 calculates the end point position A → B → C → D of the basic shape of the program plane input from the semantic analysis means 5.
(FIG. 4 (a)) is subjected to graphic conversion according to the graphic conversion definition stored in the storage means 2, and the end point positions A1 → B1 → C1 → D1 of the program plane after the graphic conversion (FIG. 4 (b)) Is calculated,
It outputs to various correction means 10 and subprogram plane end point position generation means 8.

The subprogram plane end point generating means 8
The end point position A1 → B1 → C1 → D1 (FIG. 4 (b)) of the program plane input from the graphic conversion means 6 after the graphic conversion is obtained by referring to FIG.
By performing the shape copying process as shown in FIG. 4, the end point position A1 → B1 → C1 → D1 (FIG. 4)
(b)) The end point position of the subprogram plane representing the same shape as that of (b))
a → b → c → d (FIG. 4 (c)) is calculated and output to the subprogram plane figure conversion means 9.

The subprogram plane graphic conversion means 9 stores the subprogram plane end point positions a → b → c → d (FIG. 4C) inputted from the subprogram plane end point position generation means 8. The graphic conversion is performed according to the graphic conversion definition for the subprogram stored in the subprogram 2, and the end point positions a 1 → b 1 → c 1 → d 1 (FIG. 4 (d)) of the sub program plane after the graphic conversion are calculated. Output.

The various correcting means 10 calculates the end point position A1 → B1 of the program plane input from the graphic converting means 6 after the graphic conversion.
→ C1 → D1 (FIG. 4 (b)) and the end point positions a1 → b1 → c1 → d1 (FIG. 4 (d)) of the subprogram plane input from the subprogram plane graphic conversion means 9 after the graphic conversion. for,
Various corrections are performed in accordance with the correction definitions stored in the storage unit 2, the final end point positions on the upper surface and the lower surface as shown in FIG. 2A are calculated, and output to the interpolation data generation unit 11.

In the above description, a case has been described in which the shape of the subprogram surface can be represented by performing a rotational graphic conversion on the shape of the program surface. However, the conversion for the shape of the program surface is not limited to rotation. Without expanding /
What is necessary is just to be converted according to a certain rule such as reduction.

Next, a second embodiment of the present invention will be described.

FIG. 5 is a structural view of the operating means of the second embodiment, FIG. 6 (a) is a perspective view of the basic shape of the upper and lower working surfaces in the present embodiment, and (b) is (a) (C) is a plan view of the basic shape of the upper surface, and (d) is a perspective view after conversion.
It is a top view after conversion of (c).

Referring to FIG. 5, this embodiment is the same as FIG.
Instead of the graphic conversion means 6 in the processing command processing means 3, the program plane graphic conversion means 16
In that it is configured in parallel with the vertical and different shape generating means 7 between the correction means 10 and the various correcting means 10.

The program plane graphic conversion means 16 performs graphic conversion on the end point position of the input basic shape of the program plane according to the graphic conversion definition stored in the storage means 2. Other components are the same as those in the first embodiment.

The operation of this embodiment will be described with reference to FIGS. 5, 2, 3, 4, and 6. FIG.

The semantic analysis means 5 calculates the end position A of the basic shape of the program plane from the NC program shown in FIG. 3 which defines the shape of the XY plane (program plane) input from the storage means 2 or the input means 1. → B → C → D (FIG. 4A) is calculated and output to the program plane figure conversion means 16 and the subprogram plane end point position generation means 8.

The program plane figure conversion means 16 stores the end point positions A → B → C → D (FIG. 4A) of the basic shape of the program plane inputted from the semantic analysis means 5 in the storage means 2. Figure conversion is performed according to the defined figure conversion definition, and the end point position A1 → B1 → C1 → D1 (FIG. 4)
(b)) is calculated and output to various correction means 10.

The subprogram plane end point generating means 8
The end point position A → B → C → D of the basic shape of the program surface that has not been subjected to graphic conversion and is input from the semantic analysis means 5 (FIG. 4)
(a)) is subjected to a shape copying process as shown in FIG. 6 (a), so that the end point position A → B →
An end point position a2.fwdarw.b2.fwdarw.c2.fwdarw.d2 (FIG. 6C) representing the same shape as that of C.fwdarw.D (FIG. 4A) is generated and output to the subprogram plane figure conversion means 9.

The subprogram plane figure conversion means 9 stores the subprogram plane end point positions a2 → b2 → c2 → d2 (FIG. 6 (c)) input from the subprogram plane end point position generation means 8. The graphic conversion is performed according to the graphic conversion definition for the subprogram stored in the subprogram 2, and the end point positions a3 → b3 → c3 → d3 (FIG. 6 (d)) of the subprogram surface after the graphic conversion are calculated. Output.

The various correction means 10 are provided with the end points A1 → B1 → C1 → D1 (FIG. 4 (b)) of the program plane inputted from the program plane graphic conversion means 16 after the graphic conversion, and the subprogram plane graphic conversion means. For each of the end point positions a3 → b3 → c3 → d3 (FIG. 6 (d)) of the subprogram plane input from FIG. 9 after the graphic conversion, various corrections are performed in accordance with the correction definition stored in the storage means 2, and FIG. 6 (b) to calculate the final end point position on the upper surface and the lower surface,
Output to 1.

In the present embodiment, the subprogram graphic shape conversion is performed on the subprogram surface shape obtained by performing the shape copying process on the basic shape before the program surface graphic conversion, and the basic shape of the program surface is converted. Has a new effect that independent graphic conversion can be performed on the program plane and the subprogram plane, respectively.

Next, the third embodiment (the fifth embodiment) will be described.

FIG. 7 is a block diagram of the operating means of the third embodiment.

This embodiment is an example in which the configuration of the first embodiment (FIG. 1) is modified, and various program plane correction means 20 and subprogram plane various correction means 30 are incorporated.

The vertical irregular shape generating means 17 comprises a subprogram plane end point position generating means 8, a subprogram plane graphic converting means 9, and various subprogram plane correcting means 30.

The subprogram plane various correction means 30 adjusts the end point position of the subprogram plane input from the subprogram plane graphic conversion means 9 after the graphic conversion according to the subprogram various correction definitions defined in the storage means 2. hand,
Make various corrections.

The program surface various correction means 20 according to the program various correction definitions defined in the storage means 2
Various corrections are performed on the end point position of the program plane input from the graphic conversion means 6 after the graphic conversion.

The other components are the same as in the first embodiment.

In this embodiment, a new effect is obtained in that various independent corrections can be made to the end point position of the program plane after the graphic conversion and the end point position of the subprogram plane after the graphic conversion. For example, the arc correction at the corner can be performed only on the subprogram plane. Next, a fourth embodiment (described in claim 6) will be described.

FIG. 8 is a block diagram of the operating means of the fourth embodiment.

This embodiment is an example in which the configuration of the second embodiment (FIG. 5) is modified, and various program plane correction means 20 and subprogram plane various correction means 30 are incorporated.

The program surface various correction means 20 according to the program various correction definitions defined in the storage means 2
Various corrections are made to the end position of the program plane input from the program plane graphic conversion means 9 after the graphic conversion.

The upper and lower irregular shape generating means 17 is the same as that of the third embodiment, and the other components are the same as those of the second embodiment.

In this embodiment, different graphic conversions and various corrections can be independently performed on each of the program plane and the subprogram plane.

[0075]

As described above, the present invention is provided with machining command processing means and the like including upper and lower different-shape generating means, so that the program for the shape of the program surface and the shape of the program surface and the subprogram surface are provided. First, the shape of the subprogram surface can be generated from the conversion definition representing the difference between the subprogram surface and the NC program.
Secondly, it is easy to create a program, and secondly, there is no need for a program for defining the shape of the sub-program surface in the NC program, and there is an effect that a wire electric discharge machine can be provided that reduces the program capacity.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of operating means of an embodiment of a wire electric discharge machine according to the present invention.

FIG. 2A is a model perspective view showing upper and lower surfaces to be machined according to the embodiment, and FIG. 2B is a program surface of a lower surface of FIG. 2A and a sub surface of an upper surface based on the lower surface. It is a perspective view showing a program.

FIG. 3 is an example of an NC program applied to the embodiment;

4A and 4B are plan views showing upper and lower machining surfaces on which the graphic of FIG. 2 is processed by the NC program of FIG. 3, wherein FIG. 4A is a lower surface of a basic shape, FIG. (C)
Is an upper surface according to (b), and (d) is an upper surface after figure conversion.

FIG. 5 is a configuration diagram of operating means according to a second embodiment.

6A is a perspective view of the basic shape of the upper and lower processing surfaces in the embodiment, FIG. 6B is a perspective view after the conversion of FIG. 6A, and FIG. FIG.
It is a top view after conversion of (c).

FIG. 7 is a configuration diagram of operating means according to a third embodiment.

FIG. 8 is a configuration diagram of operating means of a fourth embodiment.

FIG. 9 is a configuration diagram of a conventional operating means.

FIG. 10 is a partial detailed view of FIG. 9;

FIG. 11 shows a conventional NC program.

FIG. 12 is a plan view showing upper and lower processing surfaces of a conventional example.

[Explanation of symbols]

 1,45 input means 2,46 storage means 3,47 processing command means 4,48 interpolation means 5,51 semantic analysis means 6,52 figure conversion means 7,17 vertical and different shape generation means 8 subprogram plane end point position generation means 9 Sub-program surface figure deformation means 10, 53 Various correction means 11, 54 Interpolation data creation means 16 Program plane figure conversion means 20 Program surface various correction means 30 Sub-program surface various correction means 41 NC program 42 Operation panel 43 Control device 44 Motor 49 Servo control means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirotaka Sato 1-1-25 Shinurashima-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Within the NEC Robotics Engineering Co., Ltd. (72) Inventor Kenji Miyake Mimasu, Aikawa-cho, Aiko-gun, Kanagawa Prefecture 359-3 Makino Milling Machine Co., Ltd. (72) Inventor Masahiro Nakamura 359-3 Makino Milling Machine Co., Ltd., Aikawa-cho, Aiko-gun, Kanagawa Prefecture 359-3 Makino Milling Machinery Co., Ltd. (72) Inventor Mamoru Hirono 5-7-1 Shiba, Minato-ku, Tokyo No. 1 NEC Corporation (56) References JP-A-6-337711 (JP, A) JP-A-11-239922 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) B23H 1/00-7/32 G05B 19/18-19/46

Claims (6)

(57) [Claims] 1. A wire electric discharge machine capable of performing different shapes of an upper surface and a lower surface of a workpiece to be subjected to wire electric discharge machining, that is, upper and lower different shapes, from one side to the other. A wire electric discharge machine characterized in that the upper and lower different shapes can be machined using only a shape program of one of the upper surface and the lower surface when there is a relationship that can be converted according to a certain rule such as graphic conversion or correction. . 2. The wire electric discharge machine comprises an input means (1), a storage means (2), a machining command processing means (3) and an interpolation means (4), wherein the machining command processing means (3) , Semantic analysis means (5),
It comprises a figure converting means (6), a vertical irregular shape generating means (7), various correcting means (10), and an interpolation data generating means (11), wherein the vertical irregular shape generating means (7) is a subprogram plane end point position. 2. A wire electric discharge machine according to claim 1, comprising a generating means (8) and a subprogram plane graphic converting means (9). 3. The semantic analysis means (5) calculates an end point position of a basic shape of a program surface from an NC program supplied from an input means (1) or a storage means (2), and calculates a figure conversion means ( The figure conversion means (6) performs figure conversion on the end point position of the basic shape on the program plane, calculates the end point position of the program plane after figure conversion, and performs various corrections. Means (10) and a subprogram plane end point position generation means (8). The subprogram plane end point position generation means (8) outputs the input program plane in preparation for forming the shape of the subprogram plane. The end point position of the subprogram plane is generated by performing the shape copying process on the end point position after the graphic conversion of (1), and is output to the subprogram plane figure conversion means (9). The subprogram plane graphic conversion means (9) performs graphic conversion for the subprogram on the end point position of the subprogram plane in order to create the shape of the subprogram plane, and determines the end point position of the subprogram plane after the graphic conversion. The wire electric discharge machine according to claim 2, which is obtained. 4. The wire electric discharge machine comprises an input means (1), a storage means (2), a machining command processing means (3) and an interpolation means (4), wherein the machining command processing means (3) , Semantic analysis means (5),
It comprises a program plane figure conversion means (16), a vertical irregular shape generating means (7), various correction means (10), and an interpolation data generating means (11). The wire electric discharge machine according to claim 1, further comprising an end point position generating means (8) and a subprogram plane figure converting means (9). 5. The wire electric discharge machine comprises an input means (1), a storage means (2), a machining command processing means (3) and an interpolation means (4), wherein the machining command processing means (3) , Semantic analysis means (5),
It comprises a figure converting means (6), a vertical irregular shape generating means (17), a program surface various correcting means (20) and an interpolation data generating means (11). 2. The wire electric discharge machine according to claim 1, further comprising an end point position generating means, a subprogram plane graphic converting means, and a subprogram plane various correcting means. 6. The wire electric discharge machine comprises an input means (1), a storage means (2), a machining command processing means (3) and an interpolation means (4), wherein the machining command processing means (3) , Semantic analysis means (5),
The vertical and irregular shape generating means (17), the program plane graphic converting means (16), the program surface various correcting means (20), and the interpolation data creating means (11). The wire electric discharge machine according to claim 1, further comprising a program plane end point generating means (8), a subprogram plane graphic converting means (9), and various subprogram plane correcting means (30).