METHOD FOR WELDING A BOLT ONTO A WORKPIECE AND A BOLT-WELDING DEVICE

摘要

The invention relates to a method for welding a bolt (19) onto a workpiece, using a bolt-welding device and to a bolt-welding device. A force is applied to the drive shaft (11) using a switchable unit (29), said force exerting a resistance against a displacement of the drive shaft (11). The drive shaft (11) is moved by an electromagnetic linear drive (5) acting in an axial direction. The unit (29) can prevent the movement of the drive shaft (11) and can fix t he latter in position, in such a way that the linear drive (5) can be switched to a currentless state. In addition, the unit can dampen the movement of the drive shaft (11).