| 摘要 |
<p>A workpiece clamp has a mounting block (2, 3, 31) for mounting the clamp to a workpiece support carriage, a projecting support member (4) carrying a lower jaw (11) at its free end, an elongate upper jaw (14) pivoted intermediate its ends on the support member (4) and arranged at one end to cooperate with the lower jaw (11) to clamp a workpiece, the other end of the upper jaw (14) carrying a cylinder assembly (17) operative to cause rotation of the upper jaw (14) relative to its pivot (7) to clamp a workpiece, a datum face (23) between the jaws which a workpiece abuts during clamping, resilient means (9 and 10) restricting the pivotal movement of the upper jaw (14) and spring-biassed sensing means (24, 25, 26, 27) associated with the datum face to identify whether or not the workpiece is in abutment with the datum face. </p> |
