Improved method of producing a semifinished commutator

Details Improved method of producing a semifinished commutator Improved method of producing a semifinished commutator

1983-10-21

1984-11-27

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

310235, H01R 4308

Patent

active

044843895

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 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 tangential direction into the area of the longitudinal interspaces 3.

REFERENCES:
patent: 2963774 (1960-12-01), Pike
patent: 3376443 (1968-04-01), McColl
patent: 3468020 (1969-09-01), Carlson et al.
patent: 3987539 (1976-10-01), Gravener
patent: 4216575 (1980-08-01), Carnavos et al.

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