| 摘要 |
In the feed handle mechanism of a machine tool a handle is integrally fitted to a handle shaft. An operating member is rotatably and axially movably attached to the handle shaft. Clamping structure selectively secures the handle solidly to the operating member. A worm wheel is rotatably supported by the handle shaft, and a worm engaging the worm wheel is equipped at one end with an operator knob. Connecting structure connects the operating member to the worm wheel for fine feeding when the operating member is axially shifted in one direction. Dead stop structure is brought into play by shifting the operating member in the other axial direction to thereby control the rotation of the operating member. Switching between dead stop machining and fine feed machining is effected by axial shifting of the operating member.
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