EDM Process and apparatus for machining a workpiece by means of

Details EDM Process and apparatus for machining a workpiece by means of EDM Process and apparatus for machining a workpiece by means of

1979-04-02

1981-04-14

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 69M, B23P 102

Patent

active

042621852

ABSTRACT:
An EDM process and apparatus for effecting a cut in an electrode workpiece by means of an electrode tool wire, wherein consecutive current pulses are caused to flow through a machining gap between the electrode wire and the workpiece, and the electrode wire is maintained under traction in the machining zone and is displaced longitudinally and fed laterally through the machining zone. The electrical resistance of the wire is measured through the portion of the wire disposed in the machining zone, and the machining current or the force stretching the wire by exerting a traction thereon, or both, is adjusted such as to maintain the electrical resistance within a predetermined range. This adjustment insures a continuous control of the mechanical and thermal constraints exerted on the electrode wire as well as preventing rupture of the wire.

REFERENCES:
patent: 4052583 (1977-10-01), Inoue

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