Clamping apparatus for fixing a collet to a chuck
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United States of America Patent
Stats
-
Sep 30, 2008
Grant Date -
Nov 10, 2005
app pub date -
Apr 26, 2005
filing date -
May 4, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A clamping apparatus comprises a chuck member and a collet member that includes, at its rear side, a peripheral shoulder. The top side of this shoulder is provided with a thrust surface adapted to engage radially displaceable clamping balls of the chuck member. The bottom side of the shoulder is provided with four centering grooves that cooperate with four centering cams provided in the chuck member. Upon clamping the collet member to the chuck member, the collet member is positioned in X- and Y-directions as well as regarding the angular orientation around the Z-axis by means of the centering cams of the chuck member engaging the centering grooves of the collet member. The collet member is provided with an annular rear surface adapted to rest on Z-reference surface portions of the chuck member upon clamping the collet member to the chuck member.
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