Electric heating – Metal heating – Cutting or disintegrating
Patent
1982-02-26
1985-03-12
Paschall, M. H.
Electric heating
Metal heating
Cutting or disintegrating
219 69C, 219 69D, B23P 108
Patent
active
045047227
ABSTRACT:
An electric discharge machining apparatus capable of automatically optimizing the machining stabilizing condition including set voltage of machining pulse, duty factor of the pulse, electrode raising period and working fluid pressure, and hence capable of being full-automated. Each machining stabilizing condition is successively changed within a predetermined range and set when the maximum effective discharge generation rate is obtained. Spark machining is effected on the basis of the set value.
REFERENCES:
patent: 3767886 (1973-10-01), Sennowitz
patent: 4071729 (1978-01-01), Bell, Jr.
patent: 4335436 (1982-06-01), Inoue
patent: 4361745 (1982-11-01), Rupert et al.
patent: 4370536 (1983-01-01), Kruth
"Micro-Computer Controlled Spark-Erosion", pp. 24-28, 9/1980, EDM Digest.
Kishi Masakazu
Suzuki Yasuo
Hitachi Seiko Ltd.
Paschall M. H.
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