EDM Pulse generator with a variable output inductor for producin

Details EDM Pulse generator with a variable output inductor for producin EDM Pulse generator with a variable output inductor for producin

1981-04-23

1984-04-03

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69P, B23P 108

Patent

active

044410050

ABSTRACT:
An electrical discharge machine having a non-storage type power supply for generating working pulses to be applied across a gap between an electrode and a workpiece for cutting the workpiece comprises an induction coil for reducing the sharpness of the leading edge of the working pulses supplied from the power supply to obtain working pulses with a gradual rise. When electrical discharge machining is carried out using such pulses, the resulting concave portion produced by each pulse is shallower in depth and larger in diameter than those produced by conventional working pulses. As a result, the roughness of the machined surface becomes small.

REFERENCES:
patent: 3283116 (1966-11-01), Scarpelli
patent: 3419754 (1968-12-01), Schierholt
patent: 4242555 (1980-12-01), Delpretti

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