Electrode wire EDM apparatus

Details Electrode wire EDM apparatus Electrode wire EDM apparatus

1979-04-02

1980-12-16

Kozma, Thomas J.

Electric heating

Metal heating

Cutting or disintegrating

B23P 108

Patent

active

042399521

ABSTRACT:
An arrangement for connecting the terminals of the pulse generator of an EDM apparatus across an electrode wire and an electrode workpiece for effecting a cut applied in the machining zone between the electrode wire and the electrode workpiece. The machining current pulses are fed across the machining zone through a pair of sliding contacts, a capacitor being connected across the sliding contacts. One of the sliding contacts is engaged with the electrode wire and the other is connected to the workpiece. The capacitor is alternatively charged by the pulse generator and discharged through a low inductance circuit, thus providing in the machining zone current pulses each of short duration and having a sharp and steep leading edge.

REFERENCES:
patent: 3671705 (1972-06-01), Raznitsyn
patent: 4084074 (1978-04-01), Gilleland et al.
patent: 4163887 (1979-08-01), Buhler et al.

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