Wire electrical discharge machine and electrical discharge machining method
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United States of America Patent
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Dec 27, 2022
Grant Date -
Apr 23, 2020
app pub date -
Oct 17, 2019
filing date -
Oct 23, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A wire electrical discharge machine includes: a gap voltage detector for detecting a voltage across an electrode gap; a first voltage control unit for applying a first voltage to the electrode gap; a discharge determiner for determining whether or not the electrode gap is in a discharging state during application of the first voltage; and a second voltage control unit for supplying a machining current through the electrode gap when the electrode gap is in a discharging state. After a supply of the machining current to the electrode gap, even when a discharge is induced by the next application of the first voltage to the electrode gap, the second voltage control unit prohibits application of a second voltage to the electrode gap.
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