| 摘要 |
Workpiece stop structure is provided for workpieces to be supported from and rotated by adjustable jaw chucks and collets. The stop structure may be used to great advantage in that successive workpieces may be tooled or cut to the same length dimensions with a minimum of effort. Further, the stop structure includes several different forms, all of which may be readily adjusted to accommodate workpieces of different lengths and the disclosure further includes an insertion tool for facilitating proper insertion of an expandable plug portion within a supportive hollow cylindrical member.
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