Patent ID: 8322187

Claim:
A bending device having a bending mechanism for holding an elongated workpiece between a bending die and a clamping die revolvable around the bending die, and revolving the clamping die, to thereby bend the workpiece, the bending device comprising: a fixing base on which the bending mechanism is mounted, an articulated robot on which a chuck mechanism for holding the workpiece is mounted and which moves the chuck mechanism; and a control unit that is configured to calculate a moving amount and a transfer operation speed of the chuck mechanism from bending conditions, and to move the chuck mechanism holding the workpiece, by the moving amount and at the transfer operation speed, in a longitudinal direction of the workpiece by means of the articulated robot when bending the workpiece by revolving the clamping die by means of the bending mechanism; wherein the control unit is further configured to calculate a bending operation speed for revolving the clamp die around the bending die, and wherein the bending operation speed is the same as the transfer operation speed.