Patent ID: 6215085
Filing Date: 2001-04-10
Classification: B23K

Abstract:
A stud welding device comprising an axially displaceable adjusting element for displacement from a front position into a rear position and back, in which a magnetic field generated by a fixed magnet and a moveable coil interact in such a way that, when the moveable coil is connected to a controllable current source, an axial force is produced in order to displace the adjusting element, the movement of which is transmitted to a stud holder, the moveable coil being rigidly arranged on a hollow body which is connected to the adjusting element and axially movably in an air gap between a magnetized core and a magnetizable sheath of the fixed magnet, the magnetic field being conveyed via at least one yoke connecting the magnetizable core and the magnetizable sheath while passing radially through the moveable coil, the moveable coil exerting on the adjusting element an axial force acting only in one direction as a function of the direction of current during current control.