Importance

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Abstract

Disclosed is an improved induction-heating bender comprising: conveyor means for feeding a workpiece to be bent; a pivot arm having a gripper rotatably fixed at its free end for gripping the workpiece, permitting the gripper to be set at a selected angle relative to the axial line of the pivot arm; an arm support for rotatably holding the pivot arm and for carrying the same toward the workpiece, permitting the pivot arm to be set at a controlled effective pivot-to-gripper distance; and a heating-and-cooling mechanism for induction-heating and softening the workpiece and for cooling the same. The pivot arm has its axial line offset from its pivot. The gripper can be rotatably adjusted in angular position relative to the axis of the pivot arm, thereby permitting the workpiece to be smoothly bent into the spiral or elliptical form. The heating-and-cooling mechanism comprises a plurality of cool compartments for effecting different hardenings for selected parts of workpiece.

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First Claim