DEVICE HAVING ADJUSTABLE STROKE AND ENGAGING WORKPIECE

摘要

PROBLEM TO BE SOLVED: To adjust a stroke of a clamp device or a similar device thereto and engaged with a workpiece by an adjustment mechanism. SOLUTION: An actuator having a first piston 42 and a second piston 44 is provided in a body 22 and the stroke can be adjusted by the adjustment of the interval between the pistons. An adjustment screw rod 48 rotatable and non-slidable to the first piston is screwed with a hollow piston rod 46 fixed to the second piston, a driver 54 rotated by an Allen wrench 67 is engaged with the adjustment screw rod, and the interval between the both pistons is adjusted by the selective rotation of the adjustment screw rod. An arm 34 engaged with the workpiece is connected to the tip of the piston rod via a link 28.