Patent ID: 7516635
Filing Date: 2009-04-14
Classification: B21D

Abstract:
1. A method for deforming a workpiece by a tool having one or more forming rollers, the method comprising: rotating the workpiece and/or the tool about an axis relative to each other; moving the tool relative to the workpiece through one or more deforming curves wherein at least part of the workpiece is deformed; measuring values of one or more coordinates of a position of an extreme edge of the workpiece during the deforming process; and changing a position and/or a shape of one or more of the deforming curves being passed through during the deforming process, a feeding rate and/or a rotational speed with which the tool and the workpiece are rotated relative to each other on the basis of said measurement or measurements, with the proviso that, if the shape of one or more of the deforming curves is changed, no locally reduced portions will be imposed on the deformed portion.