Wire electrode supplying apparatus for wire electric discharge m

Details Wire electrode supplying apparatus for wire electric discharge m Wire electrode supplying apparatus for wire electric discharge m

1990-04-20

1991-07-30

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6914, B23H 710

Patent

active

050361740

ABSTRACT:
A wire electrode supplying apparatus for a wire electric discharge machine to effect the machining of a workpiece by inserting a wire electrode through the workpiece and allowing electric discharge to take place between the workpiece and the wire electrode. In this apparatus, a wire electrode feeding section is provided for inserting the wire electrode through the workpiece, as well as a feeding-side guide section and a receiving-side guide section are provided with the workpiece placed therebetween for the positioning of the wire electrode. The wire electrode is formed of a small-diameter wire, and the feeding-side guide section and the receiving side guide section are respectively provided with small openings for constraining the direction of its movement. The passage of the wire electrode through the small openings is aided by reducing the speed of feeding the wire electrode when the wire electrode passes through the small openings. A vertically movable jet nozzle is provided for allowing a working fluid to be jetted from the vicinity of the feeding-side guide section toward the receiving-side guide section so that the wire electrode after passing through the feeding-side guide section heads toward the receiving-side guide section. By starting the jetting of the working fluid after passing through the jet nozzle, the wire electrode is guided positively.

REFERENCES:
patent: 4814572 (1989-03-01), Aso et al.

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