Patent ID: 7269988
Filing Date: 2007-09-18
Classification: B21D,H02K

Abstract:
1. A bending die assembly for a bending machine said bending die assembly comprising: a first fixture member for holding one end portion of a workpiece extending longitudinally thereon, a second fixture member for holding an opposite end portion of the workpiece thereon to apply a bending force to the workpiece; a rack fixed on the first fixture member, said rack extending in a longitudinal direction of the first fixture member; a bending die having an outer peripheral surface with a radius of curvature which determines a bend radius for the workpiece said bending die being secured to the second fixture member, in a position in which the workpiece is bendable around the outer peripheral surface of the bending die; a pinion gear attached fixedly and coaxially with the bending die, said pinion gear being in mesh with the rack; and a connecting means for connecting the first fixture member to the second fixture member to allow the first and second fixture members to rotate relatively so that when the first and second fixture members are moved relative to one another the bending die is moved together with the pinion gear which moves along the rack.