| 摘要 |
PURPOSE:To hold accuracy of a bend angle and bend height even if there are variations in thickness of a plate material, and to prevent the surface of a product from being flawed by a die, by providing a die so as to be freely movable in the left and right directions. CONSTITUTION:A main roll 3 holds a prescribed interval (a) against a punch 1 and is supported by a supporting body 5 so as to freely idle-rotatable. An adjusting part 7 of bend-pressure applied on a base material A interposes urethane between a back wall 8a of a placing plate 8 and the supporting body 5 so that the main roll can move slightly in the left and right directions. Bending of the base material A is executed by lifting and lowering one of the placing plate 8 or a base material holding part. |
