| 摘要 |
A tool holder having a shank receivable in a machine tool spindle, a tool mounting shell securedly connected to the shank and adjustably movably carrying a cutting tool in a radial direction thereof, and a pair of contact detection members respectively protruded from the outer surface of the mounting shell in opposite directions. The tool holder, when used while received in the machine tool spindle, operates not only to make a bore in a workpiece, but also to be a measuring probe in measuring the diameter of the bore so that a machine tool using the tool holder is able to successively perform boring and measuring operations of the bore. Further, the tool holder incorporates a tool position adjusting mechanism therein.
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