Process and apparatus for gap control of an EDM apparatus

Details Process and apparatus for gap control of an EDM apparatus Process and apparatus for gap control of an EDM apparatus

1981-07-20

1983-09-13

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69M, 219 69D, B23P 108

Patent

active

044044488

ABSTRACT:
A process and apparatus for accurately controlling the dimensions of a workpiece machined by EDM, by developing a linear function of the average value of the delay between the application of voltage pulses and the flow of electrical discharges through the gap between an electrode tool and an electrode workpiece. The function is linear and is an inverse function of the machining gap width to the logarithm of the average delay time. Two measures effected under well-determined machining conditions permit to develop the function with precision under such conditions, and it is thus possible to instantaneously know the real machining gap width by determining only the average value of the triggering delay.

REFERENCES:
patent: 3420759 (1969-01-01), Inoue
patent: 4049942 (1977-09-01), Balleys et al.

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