Method for producing a yoke for an electric machine

摘要

The method involves guiding a trapezoidal wedge (12) into trapezoidal openings (19) passing through laminations (5) of a yoke. An upper side of the wedge is arranged at a distance from a side of each opening. A spring element is fitted between the upper side and the side of each opening. Force is exerted on the wedge perpendicular to an axial direction (Z). Inclined edges of the wedge are pressed against inclined edges of each opening. The wedge is welded with ribs (6a). The spring element is removed after welding. An independent claim is also included for a yoke of an electrical machine.