Patent ID: 7275410
Filing Date: 2007-10-02
Classification: B21D,B21K

Abstract:
1. A work transfer device employed in a multi-process press machine for sequentially transferring a work from one process step to another, comprising: a drive unit that is operated synchronously with an operation of the multi-process press machine for moving a metal die thereof up and down; a cam shaft provided vertically with respect to a horizontal plane, which is rotatably driven by the drive unit and has a plurality of cams coaxially attached thereto; a cam mechanism attached to the cam shaft so as to be operated on the horizontal plane, which is formed of three cams including an X-axis feed cam that serves to move a feed bar provided with a work holding fitting for holding the work toward its longitudinal direction as an X-axis direction, a Y-axis feed cam that moves the feed bar toward a Y-axis direction perpendicular to the X-axis direction in parallel on the same plane as that of the X-axis feed cam, and a Z-axis feed cam that serves to move the feed bar in parallel toward a direction vertical to the horizontal plane as a Z-axis direction; three types of swing levers each having a cam follower engaged with each of the cams that constitute the cam mechanism in an intermediate portion of the respective swing levers so as to be swingably operated at predetermined support points; and a link mechanism connected to each end portion of the swing levers so as to drive the feed bar toward one of the X-axis direction, the Y-axis direction, and the Z-axis direction.