Wire EDM for detecting discharge concentrations using inductance

Details Wire EDM for detecting discharge concentrations using inductance Wire EDM for detecting discharge concentrations using inductance

1983-08-02

1985-12-17

Albritton, C. L.

Electric heating

Metal heating

Cutting or disintegrating

219 69C, 219 69S, 219 69P, B23P 108

Patent

active

045594325

ABSTRACT:
A wire type electric discharge machining device monitors the location of discharges occurring within the gap between a wire electrode and workpiece. The location is determined as a function of the inductance between the discharge point and the power supply, which inductance is determined by examining the discharge current waveform. When an excessive number of consecutive discharges occur at the same location in the gap, the device regulates the value of the pulse voltage applied to the machining gap, or the quiescent time thereof.

REFERENCES:
patent: 3778579 (1973-12-01), Takarada
patent: 3816692 (1974-06-01), Ratmansky
patent: 3916138 (1975-10-01), Pfau
patent: 4321451 (1982-03-01), Inoue
patent: 4350863 (1982-09-01), Inoue
patent: 4456960 (1984-06-01), Wakai

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