Apparatus for retaining a workpiece, and methods of use and manufacture thereof
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United States of America Patent
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app pub date -
May 4, 2015
filing date -
May 4, 2015
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Abstract
Some embodiments are directed to a fixing apparatus that includes a threaded adaptor, an arbor having a flange portion and a shaft portion, and a draw cylinder disposed such that rotation of the threaded adaptor moves the draw cylinder in axially upward and downward directions. A collet can be disposed around a periphery of the arbor so as to be coaxial with the draw cylinder, such that movement of the draw cylinder in the axially downward direction causes the draw cylinder to contact the collet and thereby cause the collet to also move in the axially downward direction. The collet can include axially extending channels that define fingers therebetween and interior coaxial surfaces that are configured to communicate with exterior coaxial surfaces of the arbor such that axially downward movement of the collet moves the fingers in a radially outward direction to thereby increase an exterior diameter of the collet.
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