JPS6076917A - Wire-cut electric spark machine - Google Patents

Abstract

PURPOSE:To permit working to a complicate shape by controlling the tilt angle of a wire electrode with respect to a workpiece and the tilt angle of the workpiece with respect to the wire electrode and positioning the facing position between the wire electrode and the workpiece. CONSTITUTION:The basic part 30 of arms 2 and 3 is arranged at right angles to a wire electrode shaft 1 between arms or in parallel to a cross slide table shifting plane with respect to a column 1. Said basic part 30 revolves around a shaft crossing at right angles to the electrode shaft, and fixed positioning is performed. The top edge part 51 of a chuck 5 onto which a workpiece 6 is fixed is revolution-controlled and fixedly positioned, and the facing angle between the electrode 4 and the workpiece 6 varies, and the working for obtaining a complicate shape is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wire-cut electrical discharge machining apparatus.

[Prior art]

In a wire-cut electrical discharge machining device, while the wire electrode is fed out from one reel and recovered by winding it onto the other reel, the wire electrode is exposed from a direction approximately perpendicular to the axis of the moving wire electrode through a pair of positioning guides. A machining gap is formed by placing the workpieces facing each other, and a machining fluid such as water or oil is supplied to this gap, and a machining voltage pulse is also supplied to generate a pulse discharge, and while this discharge is repeated, the workpiece is connected to the workpiece. Processing is carried out by relatively moving the wire electrode in a horizontal plane in the direction perpendicular to the opposite direction.

As schematically shown in FIG. 1, the wire-cut electric discharge machining apparatus uses a wire electrode 4 as a guide at the tip of a pair of arms 2 and 3 that extend in a horizontal direction from a column 1 that is erected approximately vertically on a base A. The workpiece 6 held by the chuck 5 is subjected to electrical discharge machining. In order to machine the workpiece 6 into a desired shape, it is necessary to guide and move the wire electrode 4, which is updated and moved in the axial direction, while maintaining a predetermined tension in the machining section. Arms on both sides 2.
A guide holder 7.8 is provided at the distal end of the wire electrode 4. The guide holder 7.8 is provided with a guide for positioning and guiding the wire electrode 4 therein. These guide holders 7.8 hold guides that position and guide the wire electrode 4, and also spray machining fluid coaxially with the wire electrode 4 between the wire electrode 4 and the workpiece 6. The nozzle is interspersed. The machining liquid ejected from the pair of nozzles of the guide holder 1.1 is supplied to the machining section between the workpiece 1 and the wire electrode 4 and falls downward. Further, the guide holder 7 attached to the tip of the arm 2 via the support member 71 is provided so that the support member 71 is movable up and down with respect to the arm 2, so that the distance between the guide holders 7 and 8 and the vertical It is configured so that its position can be adjusted and matched to the size and shape of the workpiece 6. The vertical movement of the support member 71 is controlled by a manual handle provided at the upper end of the arm 2 or by a motor 21.
It is carried out by Furthermore, the chuck 5 that directly fixes and supports the workpiece 6 is attached to the cross slide tables IOA and 10B via the processing table 9A in the processing tank 9. The cross slide tables 10A and 10B are moved by motors 11A and IIB, and the upper chuck 5
The workpiece 6, which is fixed to the machine, is moved in the X-axis direction and the Y-axis direction. Note that a rotary encoder 12A is provided adjacent to the motor 11A, and a cross slide table I
Although the configuration is such that the position and amount of movement of the OA can be detected,
Other motors 11B and 21 are also attached, not shown. Further, the motors 21.11A, 11B and their rotary encoder 12A are connected to the control device 113. The control device 13 controls the motor 21 . IIA, 1
1B and its rotary encoder 12A, input/output of detection signals, calculations, operation commands, control, etc., and includes motor drive control, power supply, numerical control device, etc.

In this way, the conventional wire-cut electrical discharge machining apparatus moves the cross slide tables IOA, 10B, etc. according to the processing to be performed on the workpiece c, and performs processing such as cutting and cutting out a predetermined contour shape. However, as mentioned above, most of the processing targets were cutting out plate-shaped bodies into desired shapes. Once the workpiece is fixed on the chuck,
Because the direction in which the workpiece could be moved was in the direction of X''pipi Hakujuku, it was difficult to perform complex processing on the workpiece.

Further, it is possible to add variety to the machining by interrupting the machining and changing the fixing posture of the workpiece relative to the wire electrode axis, but this is impractical as the machining takes time.

(Objective) The present invention has been made in order to improve the above-mentioned conventional problems, and it is possible to arbitrarily rotate a workpiece relatively around an axis parallel to and orthogonal to the movement plane of the cross slide table. By making it possible to control the posture of the workpiece, it is possible to perform various external shape processing, processing of coils and ring-shaped continuous bodies, and processing of various complicated processing shapes without having to change the setting of the workpiece chuck, etc. The purpose of the present invention is to provide a wire-cut electrical discharge machining device that enables wire-cut electrical discharge machining.

〔composition〕

In order to achieve the above-mentioned object, the present invention provides a wire-cut electric discharge machining apparatus equipped with a pair of arms, a column, and a workpiece mounting device, which is equipped with a chuck, a processing table, and a cross slide table. around an axis perpendicular to the wire electrode axis, the tip of the tick against the chuck base around an axis parallel to the arm rotation axis or the cross slide table movement plane, and the processing table against the cross slide table. The slide table is constructed so that it can be freely rotated around axes perpendicular to the plane of movement, and the rotation angles of these can be controlled and positioned.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a schematic diagram showing an embodiment of the present invention, and the same components or components with the same functions as those in FIG. 1 are designated by the same reference numerals. As shown in the figure, an arm 2 is provided extending parallel to the cross-slide table movement plane with respect to the column 1,
The proximal end 30 of 3 is configured to be rotatable with respect to the -column 1 around an axis perpendicular to the inter-arm wire electrode axis or parallel to the movement plane of the cross-slide table, Rotation and fixed positioning at a predetermined rotation angle are performed by a motor 31 operated at .

Then, by rotating the base end portion 30, the arm 2.
3 is similarly rotated so that the wire electrode 4 between the guides can be rotated and tilted about said perpendicular or parallel axes so that the axial attitude of the wire electrode 4 relative to the workpiece 6 can be controlled or set. There is. Further, the tip portion 51 of the chuck 5 to which the workpiece 6 is fixed is configured to be rotatable with respect to the base portion 52 around an axis parallel to the arm rotation axis or the cross slide table movement plane. Rotation control and fixed positioning are performed by a connected motor 53. Therefore, the facing angle between the wire electrode 4 and the workpiece 6 can be changed. Further, a turntable 90 is provided between the cross slide table 10A and the processing table 9A in the processing tank 9, and the processing tank 9 and the processing table 9A are fixed to the upper surface of the turntable 90. The cross slide table is rotatable around an axis perpendicular to the movement plane. This turntable 9
Rotation control and fixed positioning are also performed by a motor 91 connected to the control section 13. Therefore, when the axis of the chuck 5 that directly fixes the workpiece 6 is at a predetermined position perpendicular to the cross-sliding table movement plane, preferably when the axis of the wire electrode 4 between the pair of guides coincides with the vertical line. can be rotated about the axis of the wire electrode. The base end 30 of the arm 2.3 is movable up and down the column 1 along an axis perpendicular to the plane of movement of the cross slide table, usually a vertical axis.
The motor 3 is attached to the controller 13 and connected to the control unit 13.
2, the elevating and lowering position is set to limit i8. Instead of this base end portion 30, the chuck 5 may be configured to move up and down with respect to the processing table 9A.

Since the wire-cut electrical discharge machining apparatus of the present invention is configured as described above, it can process, for example, a columnar body that has not been processed conventionally, as shown in FIG. 3, into a thin plate of a desired shape. It is something that can be done. In this processing, a cylindrical workpiece 6 is processed to obtain a processed product that is a pentagonal thin plate. In order to process a cylinder into a pentagonal prism, it is necessary to make cuts with different inclinations as shown in the figure, and by rotating the tip 51 of the chuck 5 or the base end 30 of the arm 2.3, the cutting line is cut. It can be easily processed by matching the slope of ■ to ■. If the roughly obtained pentagonal prism 61 is cut with ■, a pentagonal thin plate 62 will be obtained.
can be provided. The pentagonal prism mentioned above is processed into a pentagonal pyramid shape,
Processing and cutting out pentagonal plates of different sizes can be easily carried out, and it goes without saying that the above-mentioned processing can be combined with the usual conventional punching or punching of a desired contour shape. Therefore, for example, it is possible to easily perform punching and punching of a punching die, processing the outside shape and dimensions of the die to obtain the desired die, etc. It is possible to change or expand the concept of machining and manufacturing molds and parts using electrical discharge machining.

〔effect〕

As explained above, according to the present invention, the inclination angle of the wire electrode with respect to the workpiece, and the opposing position and inclination angle of the workpiece with respect to the wire electrode can be changed I11 control and positioning, which is unprecedented. It is possible to process products with complex shapes. In particular, the rotation of the workpiece can be controlled at three points: the tip of the chuck, the processing table, and the cross slide table. Once the workpiece has been positioned, it can be machined into the desired shape without having to reposition it many times. It is something that can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional device, FIG. 2 is a configuration diagram showing an embodiment of the present invention, and FIG. 3 is a perspective view showing an example of processing of the device of the present invention. 1...Column, 2.3...Arm, 4...Wire electrode, 5...Chuck, 6...Workpiece, 9... Processing tank, 9A... Processing table, 10A, 10B... Cross slide table,
51...Chuck tip. Applicant Inoue Japax Research Institute Co., Ltd. Agent Patent Attorney Toshi 1) Takeo

Claims (1)

[Scope of Claims] 1. A pair of substantially parallel arms having wire electrodes disposed opposite to the workpiece stretched across both at their tips, and a part of the apparatus main body to which these arms are attached. a chuck to which the workpiece is fixed at the tip; a processing table to which the chuck is fixed and which has a processing tank that receives the processing liquid supplied to the processing section of the workpiece; A wire-cut electrical discharge machining apparatus equipped with a cross-slide table that holds a table movably in the X-axis and Y-axis directions, wherein the arm is rotated with respect to the column around an axis perpendicular to the wire electrode axis between the arms. The tip of the chuck is freely rotatable about an axis parallel to the arm rotation axis with respect to the chuck base, and the processing table is rotated with respect to a cross slide table about an axis perpendicular to the movement plane of the cross slide table. A wire-cut electrical discharge machining apparatus, characterized in that the arm, the tip of the chuck, and the machining table are configured to be rotatable around the arm, and the rotation angles of the arm, the chuck tip, and the processing table can be controlled. 2. A wire-cut electrical discharge machining apparatus characterized in that the arm and the tip of the chuck are configured to rotate around the same horizontal axis, and the processing table is configured to rotate around the same vertical axis as the vertical axis of the wire electrode. .