JPS60255321A - Machining center for electric discharge machining - Google Patents

Abstract

PURPOSE:To effectively conduct electrical discharge machining for any work in response to its form and its purpose of processing by properly selecting rod- shaped and tuft-shaped electrodes and electrode units, and employing them in a combination in response to the form and conditions of the processing in question. CONSTITUTION:A chuck 6 is opened and closed by a control device 22, and cross slide tables 15, 16, and a turn table 17 are controlled in movement in the X and Y axis direction and in turning respectively, by means of a processing tank 8. A tool exchanging device 21 receives and delivers rod-shaped electrodes 11, tuft-shaped electrodes 12, 13 or an electrode unit 14 from the chuck 6 in accordance with a prescribed program. In exchanging the tuft-shaped electrode 7 mounted on the chuck 6 when prescribed processing is completed, the processing is once stopped, the main shaft 4 is pulled up by rotating the motor 5 through the control device 22, and thereby the chuck 6 is opened to return the electrode 7 to a magazine 10. With such arrangement, any work can effectively be subjected to electrical discharge machining.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a machining center for electrical discharge machining.

[Conventional technology]

There are various methods for machining a desired shape using electrical discharge machining.

One method is to first create a machining electrode with a shape corresponding to the desired machining shape, and then perform machining using this electrode.

However, since the above-mentioned machining electrodes are consumed by electric discharge, many electrodes of the same shape must be made in advance.

Another method is to use a simple shaped electrode such as a rod and numerically control the machining feed of the electrode to perform machining into a desired shape. In this method, the electrode may have a simple shape, but processing requires a high-grade numerical control device, and it is also necessary to create an NC program according to the shape to be processed.

Another method is to attach a wire-shaped, tape-shaped, heald-shaped, or net-shaped electrode made of metal or other electrical discharge machining electrode material to the molded surface of the guide body formed in the machined shape, which faces the workpiece. This is a method in which the electrodes covering the molding surface of the guide body are replaced as the electrodes wear out, and processing is performed while replacing the electrodes covering the molding surface of the guide body. This method has the advantage that the guide body does not wear out, but there is a problem in that the shape of the guide body is severely restricted.

These three methods described above each have their own advantages and disadvantages, so it is not true that any one of them is the best, but rather they complement each other. However, an apparatus that can appropriately select the above-mentioned processing methods using a single apparatus has not yet been developed.

[Problems to be solved by the present invention] The present invention has been proposed in view of the above points, and is a machining center for electrical discharge machining. Alternatively, the electrode of the clamping die and the electrode unit that attaches the electrode to the molding surface facing the workpiece of the guide body and performs machining while updating the electrode are appropriately selected, and the shape and purpose of machining can be adjusted for any workpiece. It is an object of the present invention to provide a machining center for electric discharge machining that can effectively perform machining according to the conditions.

[Means for solving problems]

The above purpose is to provide a plurality of rod-shaped electrodes of various shapes and dimensions, a plurality of total electrodes formed in various machining shapes, and a molding surface of the guide body facing the workpiece for electrical discharge machining of metal, etc. A plurality of electrode units for electric discharge machining that carry out machining by attaching wire-shaped, tape-shaped, belt-shaped, or net-shaped electrodes made of electrode materials; an electrode magazine that accommodates electrode guide bodies for the electrode units; and the electrode magazine. An electrical discharge machining device that can perform electrical discharge machining using various electrodes and electrode units in the electrode magazine, and a rod-shaped electrode, a total electrode, an electrode unit for electrical discharge machining, and an electrode guide for the electrode unit in the electrode magazine can be attached and detached. This is achieved by a machining center for electrical discharge machining that includes an automatic tool changer and a control device that collectively controls the operations of each of the above components.

[For production]

As mentioned above, since the rod-shaped electrode, the total electrode, and the electrode unit can be selected at any time, the optimal processing method can always be adopted depending on the shape of the workpiece, etc., and the desired processing can be performed accurately and quickly. becomes.

〔Example〕

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.

The drawing is an explanatory diagram showing one embodiment of a machining center for electric discharge machining according to the present invention.

In the figure, 1 is a base, 2 is an arm base fixed on the base, 3 is a column, 3A is an arm, 4 is a main shaft supported by the arm 3A so as to be able to rise and fall, and 5 is the main shaft 4. A motor for vertical movement, 6 a chuck attached to one end of the main shaft 4, 7 a total electrode supported by the chuck 6, 8
9 is a processing tank, 9 is a workpiece accommodated in the processing tank 8, IO is a rod-shaped electrode 11, total electrodes 12 and 13 formed into a processing shape, and at least a part of the forming surface of the guide body is elongated. A tool magazine to which an electrode unit 14 is attached, which is covered with electrodes that are fed and renewed, and in which machining is performed while the electrodes are being renewed as the electrodes are consumed; 14a is a guide body that is attached to the electrode unit 14 via a chuck 14b; , 15 and 16 are cross slide tables, 1
7 is a turntable mounted on the cross slide table 15, 18, 19 and 20 are motors that drive the cross slide table 15, 16 and the turntable 17, and 21 is a rod-shaped electrode between the tool magazine 10 and the chuck 6. , an automatic tool changer for transferring the total amount of electrodes or electrode units, and 22 a control device for collectively controlling each part according to a predetermined program.

Thus, the arm base 2 is fixed on the base 1, and
A support 3 stands up on the arm base 2.

A motor 5 is attached to the arm 3 extending from the support 3 toward the cross-slide table side of the base 1, and as the motor 5 rotates, the main shaft 4, which is attached to the arm 3 so as to be able to rise and fall, moves up and down. be forced to move.

A chuck G is attached to a portion of the main shaft 4 facing the base 1, and the chuck 6 is opened and closed based on signals from a control device 22.

Motors 18 drive the cross slide tables 15 and 16 and turntable 17 placed on the base 1.
．． 19 and 20, the machining tank 8 mounted on the turntable 17 is moved in the X-axis and Y-axis directions and rotated.

The automatic tool changer 21 includes a rotating part 21 b that is rotatably provided with respect to a body part 21 a, and a rotating part 21
An arm 21 c that is rotatably and extendably provided with respect to b.
and a grip portion 21d rotatably attached to its tip.
It is configured to remove the rod-shaped electrode, paper-type electrode, or electrode unit from the chuck 6 according to a predetermined program, and to transfer the rod-shaped electrode, paper-type electrode, or electrode unit to and from the tool magazine 1o. It is composed of

When electric discharge machining has finished machining a predetermined machining area and the paper-shaped electrode 7 attached to the chuck 6 is to be replaced, the machining is temporarily stopped and the control device 2
2 rotates the motor 5 and pulls the main shaft 4 upward. At the same time, the chuck 6 is opened, and the paper-shaped electrode 7 is removed from the chuck 6 by the automatic tool changer 21 and returned to a predetermined position in the tool magazine 10.

When the return operation of the paper-shaped electrode 7 is completed, the automatic tool changer 21 returns the predetermined rod-shaped electrode 11 from the tool magazine 1o.
When a paper type electrode 12, 13 or electrode unit 14 is selected and the electrode or electrode unit is attached to the chuck 6, the main shaft 4 is lowered to a position where the electrode or electrode unit has a predetermined machining gap with the workpiece 9. At the same time, a voltage pulse is supplied from a power supply circuit (not shown) between the N pole or electrode unit and the workpiece 9, and electrical discharge machining is started again while machining feed is applied by the cross slide tables 15 and 1G and the turntable I7. be done.

As explained above, the above-mentioned series of operations are performed in accordance with a program inputted into the control device 22 which centrally controls the entire machining center.

Although not shown in the drawings, the tool magazine 10 also accommodates various guide bodies of different shapes and sizes to be attached to the electrode unit 14.
4 through a chuck 14b.
A is also configured to be automatically replaced as appropriate depending on the machining state or machining shape. Also, if necessary,
A plurality of electrode units each having a guide body I4a of different size and shape are provided, and furthermore, half of the electrode units are wire electrodes, and the remaining ones are set with belt-shaped electrodes and the like. Also good.

〔Effect of the invention〕

Since the present invention is constructed as described above, according to the present invention, a rod-shaped electrode, a paper-shaped electrode, or an electrode unit can be selected at any time, so that the optimum method can always be adopted depending on the shape of the workpiece, etc. , it becomes possible to perform desired processing accurately and quickly. Furthermore, as described above, each part is controlled according to a program input to the computer of the control device 22 that centrally controls the entire machining center, so long-term unmanned operation is possible.

Note that the configuration of the present invention is not limited to the above-mentioned embodiments. That is, for example, in this embodiment, the main shaft is raised and lowered by a motor, but it is also possible to raise and lower it by hydraulic pressure. Further, the same effect can be achieved by configuring the tool magazine and processing tank to be fixed and moving the main shaft in the X-axis, Y-axis, and Z-axis directions. In addition, the type and shape of the electrode or guide body accommodated in the tool magazine, the method of attaching the electrode to the spindle, the method of controlling each part, etc. can be freely changed within the scope of the purpose of the present invention. Therefore, the present invention encompasses all of them.

The present invention has an electrode unit having a wire-shaped or belt-shaped electrode guide, and is disclosed in, for example, JP-A-54-28.
The electrode unit is different from that described in Japanese Patent Application Laid-Open No. 56-453, for example.
Publication No. 28, Publication No. 56-45330 and Japanese Patent Application No. 1983-
No. 70105, No. 59-30353, No. 59-4-4
No. 082, No. 59-67351, No. 59-67352
Those listed in the No. 1, etc. can be used as appropriate.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing one embodiment of a machining center for electric discharge machining according to the present invention. 1------・-1---------------------------Base 2------------------Arm Base 3'----------------------1 pillar 38-:------------1--
-----Arm 4---------------
------One main shaft 5.1B, 19.20-11----
-Motor 6.14 b------------
−Chuck 7−−−−−−−−−−−−−−−
---One full type electrode 8-----
−−−−Processing tank 9−−−−−−−−−−−−−−
−−−−−−−−−One workpiece 1o −−−−−−−−
-l----,-----Tool magazine 11----
---' ---------------- Rod-shaped electrode 12.13--------------
1. Full type electrode 14---------------・----
1---Electrode unit 15.16--------- ”-
Cross slide table 17--11--------
-------------One turntable 21--
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
- Control device patent applicant Inoue Japax Research Institute Agent (7524) Shotabe Mogami

Claims (1)

[Scope of Claims] A machining center for electrical discharge machining comprising the components described in items a) to d) below. a) A plurality of rod-shaped electrodes of various shapes and sizes, a plurality of clamping electrodes formed into various machining shapes, a wire-shaped electrode material for electric discharge machining made of metal or the like on the molded surface of the guide body facing the workpiece; , a plurality of electrical discharge machining electrode units to which tape-shaped, heald-shaped, or mesh-shaped electrodes are attached and which perform machining, and an electrode magazine containing electrode guide bodies for the electrode units. b) An electric discharge machining device capable of performing electric discharge machining using various electrodes and electrode units in the electrode magazine. C) An automatic tool changer capable of attaching and detaching the rod-shaped electrode, the clamping electrode, the electrode unit for electrical discharge machining, and the electrode guide for the electrode unit in the electrode magazine to and from the electrical discharge machining apparatus. d) A control device that collectively controls the operations of each of the above components.