Wire electric discharge machining apparatus
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United States of America Patent
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Aug 23, 2016
Grant Date -
May 14, 2015
app pub date -
Oct 30, 2012
filing date -
Oct 30, 2012
priority date (Note) -
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Abstract
A wire electric discharge machining apparatus that machines a workpiece by using a wire supported between a lower arm and an upper arm. The apparatus includes a surface plate that has a vacant inner area in which the wire moves and supports part of the workpiece with an outer area thereof. The apparatus further includes a bellows that extends through a side surface of a casing of a machining bath, enclosing part of the lower arm, wherein a first end of the bellows that is on a side of the machining bath is attached to the lower arm so that the bellows does not get in under the inner area, at whatever position the wire machines the workpiece.
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