JP2523229Y2 - Power supply for wire electric discharge machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply for a wire electric discharge machine which can be economically used by using a conductive metal body, for example, a thin rod of iron.

[0002]

2. Description of the Related Art The power supply of a conventional electric discharge machine is a circular power supply, and discharge is performed using only one surface.

[0003]

The problem to be solved is that a part of both ends of the conductive metal rod is formed as a flat body, and the inclined surfaces are formed on the front and back surfaces, and there is a smooth surface line between the inclined surfaces on the front and back surfaces. This is the point that the discharge surface is increased on the front and back surfaces in the power supply.

[0004]

According to the present invention, an inclined surface is formed as a flat body on the front and back so that a wire can be easily inserted from either of the right and left ends of the conductive metal rod, and a smooth surface is formed between the left and right inclined surfaces. By connecting the surface wires along the longitudinal direction of the metal, a power supply that can be used on both sides and facilitates insertion of wire wires has been realized.

It is also effective to form the flat inclined surfaces formed on both ends of the conductive metal rod on the front and back surfaces with different lengths.

[0006]

The power supply is inserted into the pipe, and the wire is passed through the gap between the power supply and the nozzle by using contact discharge. Other processing is performed. Then, when the wire wire comes into contact with the power supply, a cut line is generated with respect to the power supply together with the discharge, so that the discharge is difficult to be performed.

[0007]

1 to 4 are explanatory views of a first embodiment of the present invention. FIG. 1 is a front view of the power supply 1 in which both ends are flat inclined surfaces.
The power supply 1 is formed by connecting a smooth surface line c between the inclined surfaces A and B along the longitudinal direction of the power supply 1.

FIG. 2 is similar to FIG. 1, but shows a rear view, in which both ends of the power supply are formed on flat inclined surfaces D and E, and a smooth surface line is formed between the inclined surfaces D and E. The connection is formed along the longitudinal direction of the power supply 1. In this case, the same effect can be obtained even if the inclined surfaces A, B, D, and E are formed to have different lengths.

FIG. 3 is similar to FIG. 1, but shows a side view, in which both ends of the power supply 1 are formed into flat inclined surfaces A, D, B and E, and the ends are sharpened. The smooth surface lines c and f inside the inclined surface are flat surfaces.

FIG. 4 is a drawing viewed from the end of the power supply 1, and shows an example in which the front and rear inclined surfaces are made to be different in length.

In the embodiment shown in FIG. 5, after the power feeder 1 is inserted into the nozzle 3 of the diamond die 2, the wire 4 is brought into sliding contact with the power feeder 1 to perform three discharges of spark, arc and corona. By using the electric energy, a hole having an arbitrary shape or a hard metal is cut in a short time by the wire.

FIG. 6 is a plan view of the diamond die 2 in which the wire 4 is inserted through the insertion opening 5.

FIG. 7 shows an example of an attached state of a wire electric discharge machine, in which a wire 4 is slidably contacted with a power supply 1 provided inside a die 3 of a diamond die 2 via a guide roller 6. Then, the metal workpiece 7 is pierced or cut in an arbitrary shape by the electric energy, and is collected through the lower die guide 8 and the lower roller 9 and the pigtail guide 10 to contact the collection guide portion 12. The rotation of the roller 11 and the collection pinch roller 13 stores the wire 4 in the storage box 14.

8 to 10 show a conventional power supply.

[0015]

As described above, the power supply of the present invention is made of a conductive metal rod, and a part of the left and right ends is formed as a flat body, and the inclined surfaces are formed on the front and back surfaces. When a smooth surface line is formed along the longitudinal direction of the rod between the inner ends of the front and back surfaces, and the wire line is slid along the smooth surface line to perform a discharge, the power supply and the wire line The sliding contact generates a linear groove in the power supply electrode, making it difficult to discharge, thereby hindering drilling or cutting of the workpiece. Therefore, the object to be processed can be further pierced or cut by changing the direction of the power supply to the opposite direction and sliding the wire wire on a new smooth surface line to renew the discharge. More specifically, since the electric discharge is performed on both surfaces of one power supply, it can be used twice as much as in the conventional electric discharge machining, and has the effect of being economical.

[Brief description of the drawings]

FIG. 1 is a front view of a power supply.

FIG. 2 is a back view of the power supply.

FIG. 3 is a side view of a power supply.

FIG. 4 is a plan view of a power supply.

FIG. 5 is a cross-sectional view of the diamond die showing a state of sliding contact between a power supply and a wire line.

FIG. 6 is a plan view of a diamond die.

FIG. 7 is an explanatory view showing a use state of the present invention.

FIG. 8 is a front view of a conventional power supply.

FIG. 9 is a side view of the same.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply 2 Diamond die 3 Wire wire

Claims (2)

(57) [Scope of request for utility model registration] 1. A power supply in which inclined surfaces are formed on the front and back surfaces by using a part of right and left ends of a conductive metal rod as flat bodies, and the rod is provided between front and back inner ends of the left and right inclined surfaces of the power supply metal rod. A power supply for a wire electric discharge machine in which a smooth surface line is connected and formed along the longitudinal direction so that both surfaces can be used. 2. The power supply for a wire electric discharge machine according to claim 1, wherein the front and back surfaces of the same end of the inclined surface are formed to have a uniform length.