| 摘要 |
An apparatus for clamping a work piece on a mounting table includes a driving device mounted inside of a casing, a gear reducer connected to an output shaft of the driving device for reducing the rotational speed of the driving device, a rotatable member being rotatable by a power taking-off mechanism connected to the gear reducer, and a detent member screwably engaged with a rotatable member, in which the detent member is outwardly and inwardly movable with regard to the rotatable member by the rotation of the rotatable member to press the work piece on the mounting table at the time of that the detent member is fixed on the mounting table so as not to be rotated.
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