| 摘要 |
The present invention provides a workholder and a method for securing a work piece by engaging either a bore contained in the work piece or by gripping the edge of the bore of the work piece. The workholder includes a support platform, and a bore clamping device that is mounted to the support platform. The clamping device has a cylindrical, expandable arbor extending upwardly from the support platform for positioning in and engaging the bore or for gripping an outer edge of the bore.
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