| 摘要 |
<p>A gripper with leaf springs having fingers near their ends to engage and disengage workpieces, uses an actuating mandrel including a rod, for converging/diverging the leaf springs. The springs are in an annular array and are converged by a mandrel rod to disengage the work. Near its outer end the rod has a conical cam surface which engages cooperative internal cam-follower surfaces on the springs to diverge the springs when the actuator is in advanced pisition. The nose has a skirt which engages the outer ends of the springs, i.e. the fingers, to converge the springs near the ends when the actuator is in retracted position. The range of the flexing in each direction is within the elastic limit of the material of the joint. Thus the leaf springs remain resilient and fatigue as a result of repeated flexing of the joints is precluded.</p> |
