Wire electrical discharge machine and wire electrical discharge machining method
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United States of America Patent
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Aug 15, 2023
Grant Date -
Sep 17, 2020
app pub date -
Mar 6, 2020
filing date -
Mar 12, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A wire electrical discharge machine performs electrical discharge machining on a workpiece by applying voltage across an electrode gap formed between a wire electrode and the workpiece to thereby generate electrical discharge while moving the wire electrode relative to the workpiece along a path specified by a machining program. The wire electrical discharge machine includes: a voltage detector for detecting a gap voltage across the gap; a facing area calculation unit for calculating, as a facing area, the area of a surface of the workpiece contained within a predetermined distance from the center axis of the wire electrode; an axis feed rate determination unit for determining an axis feed rate based on the gap voltage value detected by the voltage detector, and the facing area; and a movement control unit for performing control so that the wire electrode moves relative to the workpiece at the axis feed rate.
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