Patent ID: 8443644
Filing Date: 2013-05-21
Classification: B21D,B21F,B29C

Abstract:
1. A rotary-draw bending die with eccentric clamping for bending elongate workpieces, comprising: a rotatable bending mandrel having a rotational axis; a base plate having an opening and non-rotatably attached to the bending mandrel via a hollow-cylindrical intermediate element; a rotary plate rotatable relative to and concentric to the bending mandrel, wherein the rotary plate is disposed concentrically in the opening of the base plate and is partially rotatable with respect to said bending mandrel; a pin defining a swivel axis rigidly fixed in the rotary plate, wherein the swivel axis is eccentrically offset in relation to the rotational axis of the bending mandrel; and a clamp die associated with and movable relative to the bending mandrel and freely rotatable about the swivel axis, wherein the clamp die is displaceable between its clamping position adjacent the bending mandrel and its opened position remote from the bending mandrel or vice-versa by the rotating of the rotary plate.