GRINDING APPARATUS AND GRINDING METHOD
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United States of America Patent
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Issued Date -
Apr 4, 2013
app pub date -
Sep 12, 2012
filing date -
Sep 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided a grinding apparatus including: an upper surface plate; a lower surface plate disposed facing the upper surface plate and rotating in an opposite direction to the upper surface plate; a sun gear rotated by a same rotational shaft as the upper surface plate and the lower surface plate; an internal gear rotated by the same rotational shaft as the upper surface plate and the lower surface plate; and a planetary carrier in which a holding hole that holds a workpiece is formed and which revolves while rotating in engagement with the sun gear and the internal gear. The holding hole in the planetary carrier is provided with a cutaway in a side of the holding hole that contacts a side surface of the workpiece when the planetary carrier rotates.
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