| 摘要 |
The present invention relates to a method for reshaping a workpiece, in which a reshaping force is exerted on the workpiece by means of a reshaping tool and the workpiece is heated during or before the reshaping of the workpiece, wherein the heating of the workpiece is performed by the at least partial absorption of an ultrasonic vibration in the workpiece. In order to provide a method and a device for reshaping a workpiece that avoids the aforementioned. disadvantages, in particular when reshaping materials with a highly temperature-dependent damping constant, it is proposed according to the invention that, before the reshaping force is applied to the workpiece, at least a first portion of the workpiece is brought to a temperature which differs from the temperature of a second portion of the workpiece that comes into contact with the reshaping tool. |
