Patent ID: 6094957
Filing Date: 2000-08-01
Classification: B21F,C21D,C22F

Abstract:
A method for shaping a coil section of a metallic wire, comprising the steps of:preparing the metallic wire of a predetermined length;holding a portion of the metallic wire where no work is to be carried out, by a conductive clamping device;bringing a first conductive pressure member into contact with a first bending work position of the metallic wire;connecting an electric power source to the first conductive pressure member and the conductive clamping device to thereby supply current through the metallic wire while applying a predetermined pressing force to the first conductive pressure member, to bend the metallic wire by a predetermined amount;locating part of the portion of the metallic wire which has been bent by the predetermined amount on a conductive rod having a circular cross-section;bringing a second conductive pressure member into contact with a second bending work position of the metallic wire;connecting an electric power source to the second conductive pressure member and the conductive rod to thereby supply current through the metallic wire while applying a pressing force to the second conductive pressure member; andcausing a relative displacement between the second conductive pressure member and the conductive rod in the bending direction of the metallic wire.