Robert Boschgmbh

Friedrich Behrens

Stefan Ossenkopp

Hans Deierling

Peter Franz

Martin Schwerdtle

Claus Pollack

Winfried Brettmann

Ludwig Reisnecker

Martin Schwertle

Siegfried Hauptmann

The invention relates to a method for producing a commutator ring ( ) for a commutator of an electrical machine, in which the laminas ( ) of the commutator ring and fastening means ( ) are formed out of a band material ( ), and a selectable number of laminas ( ) are then closed to form the commutator ring. The fastening means are produced with a special tool ( ) in the form of dovetail grooves ( ) by means of a so-called furrowing operation, which is done simultaneously from both face ends of the laminas ( ).

Method of producing a commutator of an electrical machine

A roll commutator for electric motors has a plurality of bars adjacent to one another and produced from a continuous metal section. The metal section already has projections on one of its sides before the production of the bars, which projections serve as anchoring claws after rolling up the line portions produced from the metal section. Additional tools and processing steps are not needed since it is not necessary to process the claws when manufacturing the roll commutator.

Roll commutator for electric motors and dynamos, and method of

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Diekholzen, Germany

Friedrich Behrens