Process for the manufacture of the stator of an electrical machine

A process of manufacturing an electrical machine with two stator plate stacks inserted at a distance from one another in a surface cooled metal housing one after the other in an axial direction, a stator winding being inserted in slots of the stator plate stacks and cooperating with two claw pole systems which are arranged on a drive shaft supported at opposite front sides of the machine, with the stator windings having winding ends which project out at a front and are enclosed by a metal housing for conducting off heat, the process comprising the steps of positioning the two stator plate stacks carrying the stator windings first relative to one another by spacing means for insertion into a compression mold;

• guiding connection conduits of a rear stator winding through slots in a front stator plate stack;
• fastening connection parts for the stator windings at a base part of a compression mold so that they are detachable and making contact of the connection parts with connection conductors of the stator windings;
• inserting the two stator plate stacks into an outer annular wall of the compression mold at their outer diameter with the spacing means;
• receiving the stator plate stacks at their inner diameter by an inner annular wall of the compression mold with an axially guided male die;
• injecting a heat conducting plastic in hot state between the inner and outer annular wall so that the stator plate stacks, the spacing means, the winding ends and the connection parts are embedded in the heat conducting plastic to form a constructional unit.