WORK CLAMPING DEVICE

PROBLEM TO BE SOLVED: To eliminate an interruption of working due to the change of hands, even if works have various sizes and forms, and clamp the works with sufficient clamping force by making it possible to adjust space of clamping claws mounted on the fingers of a four point contact type parallel two finger hand. SOLUTION: Clamping claws 5 of a claw space varying mechanism 4 provided on the opposed surface sides at each tip of two fingers of a robot hand 1 vertically move for the moving directions of the fingers in a surface in which all the clamping claws 5 exist and are mounted to have sharp edges from the claw space varying mechanism 4 toward the inside. When a robot hand 1 clamps a work 11 whose clamping side length is long, the clamping claws 5 are located near the end of each of two clamping surfaces of the work 11 and the work 11 can be surely clamped by widening claw space (d) by the claw space varying mechanism 4. When a work 12 whose clamping side length is short is clamped, proper claw space of the clamping claws 5 to clamp the work 12 can be maintained by narrowing the claw space (d) by the claw space varying mechanism 4.