B - Operations – Transporting – 23 – H
Patent
B - Operations, Transporting
23
H
327/33
B23H 7/20 (2006.01)
Patent
CA 1076654
ADAPTIVE CONTROL SYSTEM AND METHOD FOR ELECTRICAL DISCHARGE MACHINING Abstract of the Disclosure A system for controlling an electrical discharge machin- ing apparatus in which there is an electronic output switch con- nected between a power source and an electrical discharge machin- ing gap for providing to the gap machining power pulses of pre- determined on-off time. The system further includes a current limiting stage for limiting the peak current provided to the gap at certain critical combinations of on-off time ratios so that possibility of gap short circuiting is substantially eliminated. This system further includes a programmable computer operable to receive a plurality of operator provided and memory stored data inputs, including one for controlling pulse on-time and the other as a current limiting signal for the current limiting stage. The system further includes a reference signal and a sig- nal network connected to the gap for providing a feed-back of a gap voltage signal. These two aforesaid signals are processed to provide an off-time control signal whereby the off-time is suitably controlled in response to changes in gap voltage. The system further includes a means for controlling in an automatic fashion the servo-feed system of the apparatus responsive to the gap voltage signal.
269900
Colt Industries Operating Corp.
Na
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