JPH0453629A - Wire electric discharge machining device and machine using same - Google Patents

Abstract

PURPOSE:To machine a wire line form with a sharp angle without using any other thin wire in particular by installing a device, capable of forming a part of the line surface of an electrode of the wire line so sharply as an acute angle in going along the line by means of electric discharge machining(EDM), in a wire electric discharge machine. CONSTITUTION:A wire electric discharge machine with an electrode forming device makes electricity flow into a wire line from a working power source 8 through a current energizing part 9, letting water and oil flow out of a water- oil feeding guide, through which the wire line is machined by a wire forming electrode unit 10. An electrode is made to stand face-to-face with a wire in the vertical or horizontal direction and the round wire is machined into, for example a D type. With the required wire electrode formed, an object form is easily and accurately secured while requiring no other special wire line.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) FIGS. 4-11 and 4-2 show the relationship between electrodes and wires.

Next, FIG. 7-1 is a diagram showing the principle of a wire electrical discharge machine, in which a wire is fed out from a wire supply device (11) and the Uv axis (2) is controlled.The wire then passes through a wire guide (3).

A workpiece (5) is formed through a water and oil supply guide (4), and the workpiece is machined into a predetermined shape by an XY-axis control device (6). Wire winding device (7) and processing power source (8)
Machining is performed by applying a machining current.

Figure 7-2 is a diagram showing the principle of a wire electrical discharge machine with an electrode forming device.

Electricity is applied to the wire wire by passing the electric current 5 (9) through the processing electric current 5 (8), water and oil are poured from the previous water and oil supply guide, and electric current is applied to the wire by the wire forming electric device (lO). Process the lines.

Next, Figure 11-1 shows an electrical discharge machine with an electrode forming processing device.
The electrode (11) is molded using an electrode molding device (12).

The workpiece (13) is subjected to electrical discharge machining using the machined electrode (11) to obtain a predetermined shape.

The plan view 8-2 shows an example of an electrode molding device, and the second device is a device that performs electrode molding by rotating the electrode under rotatable NC control.

(Effects of the invention) Conventional thin wire electric discharge machines require thin electrode wires, but this machine does not require this and is equipped with an electrode molding device that can set a large number of molded electrodes, so the machining moving parts can be raised. It is extremely advantageous to be able to do so.

[Brief explanation of the drawing]

The drawings show an example of the present invention, and FIGS. 1 to 3 are explanatory diagrams of the shape of a wire electrode as a wire before and after electrical discharge machining, and FIG. 4 is an explanation of an example of a method of molding with a shaped electrode. 1 and 5 are explanatory diagrams showing an example of a rod-shaped electrode molding method and a processed electrode. FIG. 6 is an explanatory diagram showing the basic physical phenomenon, the wire diameter, the consumable part, and the state of the consumable part. Figure 7-1 is a diagram of the principle of a wire electrical discharge machine. Figure 7-2 is a diagram of the principle of a wire electrical discharge machine with a wire molding die of $111. Figure 8-2 is an explanatory diagram of an example of the electrode 1 & mold device. . Wire wear is at a maximum of about O,OS- with a wire diameter of 0.2-. The drawing shows the wire diameter and the worn parts. Engraving of the drawings Figure 1-1 In normal wire electrical discharge machining, the wire is in the shape of a round bar, so some of the corners are rounded as shown in Figure 1-1. When a wire electrical discharge machine equipped with an electrode forming device forms and processes a wire, a shape with sharp corners can be obtained at the corner 5-Ill-2. Figure 4-1 Figure 4-2 Figure 2 - Stage molding method (The arrow indicates the electrode advancing direction, and the electrode has a servo that advances or retreats in the direction of the arrow.) Figure 2-1 Figure 2 Figure 3 Two-stage molding method (The arrow indicates the electrode advancing direction, and the electrode is servoed to advance or retreat in the direction of the arrow.) Wire Wire Second stage Second stage Figure 3-1 Method 2 placed perpendicular to the electrodes Arranged obliquely to the electric power Basic physical phenomenon of the method (In general wire electric discharge machines, the wear of the wire is 0°, maximum 0.06-degree.) Procedural amendment (method) with a wire diameter of 2.

Claims (1)

[Scope of Claims] 1) A wire electrical discharge machine has a device that can form a part of the wire surface into a sharp shape along the line, such as an acute angle, by electrical discharge machining of the electrode of the wire wire. Processing equipment. 2) An electrical discharge machine that has a device that can mold electrodes for electrical discharge machines.