Wire electric discharge machining apparatus
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United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Jun 23, 2010
filing date -
Sep 24, 2009
priority date (Note) -
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Abstract
A wire electric discharge machining apparatus is constructed in such a manner as to include: a wire electrode having a plurality of cutting wire portions that are separated from one another in parallel and are opposed to a workpiece; a machining power supply that generates a pulsed machining voltage; a plurality of power feed contact units that are electrically connected to the cutting wire portions and apply the machining voltage between the cutting wire portions and the workpiece; and a nozzle that ejects machining liquid from an ejection opening toward an electrode gap along the cutting wire portions.
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