STROKE ADJUSTING DEVICE OF PRESS MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a stroke adjusting device having a means of removing the unbalance of a rotating system in a press. ;SOLUTION: This stroke adjusting device comprises an eccentric bush 21 fixed to an eccentric shaft, and a rotation balance weight 26 which is joined with the eccentric bush 21 by the interference fit and a rotational balance weight 26 having a weight portion 25 which removes the unbalance of the rotating system. A pressure oil is passed through an oil passage 4B, and the rotational balance weight 26 is elastically deformed to open the interference fit, and the eccentricity of the rotational balance weight 26 can be changed corresponding to the change in the eccentricity for turning an eccentric portion 1A, i.e., for adjusting the stroke.;COPYRIGHT: (C)2001,JPO