Wire electrical discharge apparatus and initial hole machining method
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United States of America Patent
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Dec 4, 2018
Grant Date -
Jun 14, 2018
app pub date -
Apr 23, 2015
filing date -
Apr 23, 2015
priority date (Note) -
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Abstract
A wire electrical discharge apparatus includes a wire bobbin on which a wire electrode is wound, a straightening treatment unit to perform straightening treatment on the wire electrode fed from the wire bobbin, a machining power supply to apply a voltage between the wire electrode and a workpiece via a feed terminal set above the workpiece and contacting the wire electrode, and a control unit to control the straightening treatment unit and the machining power supply so as to apply a voltage between the workpiece and the wire electrode that has been subjected to the straightening treatment, to perform electrical discharge machining to form an initial hole in the workpiece.
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