| 摘要 |
A machine tool circular cutting supplementary apparatus comprises an upright support vertically slidably and horizontally rotatably mounted in the worktable of a machine tool, a locating block fastened to the top of the upright support, a horizontal rod slidably inserted through a transverse through hole in the locating block and locked with lock means, and a positioning member mounted on one end of the horizontal rod member and provided with a tip being engaged with the center of the circle drawn on the workpiece to be cut by the machine tool.
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