Electrical discharge machining method and apparaus with non-load time calculation
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United States of America Patent
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Aug 13, 1996
Grant Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Mar 9, 1994
priority date (Note) -
Expired
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Abstract
An electrical discharge machining method includes the steps of intermittently applying a voltage pulse to an electrical discharge machining gap between a machining electrode and a work in accordance with predetermined ON and OFF times to generate discharge, relatively moving the machining electrode and the work during generation of discharge to perform electrical discharge machining, detecting a discharge frequency during electrical discharge machining, calculating a nonload time by subtracting the predetermined ON and OFF times from a discharge repetition period based on the detected discharge frequency, and controlling a relative position between the machining electrode and the work on the basis of the calculated nonload time.
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