Patent ID: 6223581
Filing Date: 2001-05-01
Classification: B21D,Y10T

Abstract:
A hemming device for inner hemming, the device comprising:a plurality of hemming segments each including a hemming edge and a contact surface;an adjusting drive connecting to each of said plurality of hemming segments and holding said hemming segments and moving the hemming segments simultaneously between a radially inward retracted position and radially outward extended working position for inner hemming of an inner surface of a workpiece surrounding said hewing segments, said hemming segments being positioned in said extended working position to have said contact surfaces abut each other flush and to have said hemming edges align to form a single continuous hemming edge, said adjusting drive including an adjusting drive for directly and simultaneously moving said hemming segments in a feed motion between said retracted position and said extended working position; anda stroke drive operatively connected to said segments for moving said segments in said extended position in a hemming stroke, essentially at right angles to said feed motion, said hemming stroke being essentially linear.