Method of manufacturing commutators

Details Method of manufacturing commutators Method of manufacturing commutators

1987-12-10

1989-10-10

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

310235, H01R 4308

Patent

active

048722553

ABSTRACT:
Anchoring elements of commutator lamellas are formed in a manner that of the inner circumference of the commutator mantle, longitudinal ribs 2 each having two longitudinal ridges 2a are formed by deforming without cutting the material of starting outline A, such as by trenching by plowing, the material mainly moving in a radial direction, whereby between the ribs 2 the longitudinal interspaces 3 are sharply defined. Subsequently, the ridges 2a are flattened by a flattening mandrel, whereby the prevailing part of the ridge mass is deformed in a tangential direction into the area of the longitudinal interspaces 3.

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patent: 4672834 (1987-06-01), Alberto

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