| 摘要 |
<p>A self-equalizing clamp (10) brings one of a pair of clamp arms (60, 62) into engagement with a workpiece (20) at the actual position of the workpiece (20). In one embodiment, one end (66, 92) of each clamp arm (60, 62) is pivotally connected to a drive cylinder (26) and to a piston rod (27) of the cylinder (26), respectively, for pivoting the opposite ends (64, 90) of the clamp arms between a first, spaced apart position and a second workpiece engaging position. Adjustment of clamp arm (62) causes the opposite clamp arm (60) to correspondingly move. Alternatively, a biasing member (168) disposed between a pair of slidable plates (136) automatically adjusts the positional relationship of the plates (136). Alternately, a clamp (170) is adjustable relative to a fixed support by adjustment screws in displaceable plates (172, 176).</p> |
