| 摘要 |
A chuck mechamism for holding a workpiece during a machining operation comprising a frame, a stop block secured to the frame and an annular jaw slidably mounted within an annular channel in the frame. The jaw is movable between a clamping position in which a workpiece is held between the jaw and the stop block, and a nonclamping position. Preferably, the jaw includes a first sector and a second sector secured together by interlocking but spaced apart flanges. The flanges permit limited annular movement between the sectors.
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