Patent ID: 6907762
Filing Date: 2005-06-21
Classification: B21D

Abstract:
1. A method for deforming a hollow tubular workpiece, wherein the workpiece is clamped down in a clamping device, a first forming tool is placed into contact with the outer surface of the workpiece, said first forming tool is rotated about an axis of rotation relative to the workpiece and one end of the workpiece is deformed by means of said first forming tool, wherein a second forming tool is placed into contact with the outer surface of the workpiece and is rotated relative to the workpiece about an axis of rotation such that the other end of the workpiece is deformed by means of the second forming tool and that at least one of said tools is moved relative to the workpiece during said deformation and/or between deforming steps on the same workpiece, wherein the axis of rotation of at least one of said tools is translated and/or pivoted about an axis with respect to said workpiece.