Abstract: A bending apparatus has a die, a first clamp for clamping an elongate work piece into engagement with the die forward of the transverse center line of the die on one side of the die and a second clamp for clamping the elongate work piece into engagement with the die forward of the transverse center line of the die on the other side of the die. The first and second clamps are rotatable around the axis of the die to bend the elongate work piece. The first and second clamps are each movable between a retracted position in which the clamp is separated laterally from the die and is located below the plane in which the work piece is to be bent and an engaged position in which the clamp is in clamping engagement with the die.

Abstract: A collet assembly for a bending apparatus has a support ring the support ring being connected coaxially to a tubular support member, five jaws being pivotally connected to the free end of the support ring by means of parallelogram linkages, each of the parallel linkages having a pair of links one disposed radially inwardly of the other to permit movement of the jaws transverse to the axis of the support rings, the jaws being spaced angularly around the circumference of the support ring; an actuating assembly has an outer ring connected to a control sleeve slidably mounted on the tubular support member and an inner ring disposed on the internal diameter of the support ring, the inner ring defines a cam formation for engagement with corresponding formations on the inner link of each parallelogram linkage, the inner ring of the actuating assembly being connected to the outer ring through elongate slots in the support ring, so that the actuating assembly may be moved axially with respect to the support ring betwe