Method for manufacturing an armature for an electric motor
AssigneeVacontec
InventorsEugen Gstohl, Hans-Gerd Hoeptner
Life of this patent
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Abstract
An armature for an electric motor with a shaft, a stack of laminations arranged on the shaft, a commutator likewise arranged on the shaft and comprising several commutator segments and a plastic filling, and a wire winding wound around the stack of laminations and welded to the commutator is manufactured by first fixedly arranging a commutator blank without plastic filling by means of an auxiliary assembly device on the shaft, then attaching and welding the wire winding to the commutator blank, subsequently filling the assembly consisting of commutator blank, stack of laminations and wire winding with plastic and uniting it into an inherently stable, compact unit, and, finally, removing the auxiliary device again.
Claims16
A method for manufacturing an armature for an electric motor comprising the steps of:
- a) securing a commutator blank to an auxiliary assembly device and mounting the auxiliary assembly device onto a shaft;
- b) winding wire conductors onto a stack of laminations positioned on the shaft and welding the wire conductors to the commutator blank;
- c) enclosing the conductors, laminations, and commutator blank within a mold in which the auxiliary assembly device defines a section of the mold wall;
- d) filling the mold with plastic to form a rigid assembly;
- e) withdrawing the rigid assembly from the mold;
- f) removing the auxiliary assembly device from the shaft;
- and
- g) dividing the commutator blank into a plurality of commutator segments.
A method for manufacturing an armature for an electric motor comprising the steps of:
- a) securing a plurality of commutator segments to an auxiliary shaft by encircling the segments with an auxiliary assembly device;
- b) winding wire conductors onto a stack of laminations positioned on the auxiliary shaft and welding the wire conductors to the commutator segments;
- c) enclosing the conductors, laminations, and commutator segments within a mold in which the auxiliary assembly device defines a section of the mold wall;
- d) replacing the auxiliary shaft with an armature shaft;
- e) filling the mold with plastic to form a rigid assembly;
- f) withdrawing the rigid assembly from the mold;
- and
- g) removing the auxiliary assembly device from the commutator segments.
Dependencies are inferred from the claim text.