Manufacture of yokes for dynamo electric machines

Details Manufacture of yokes for dynamo electric machines Manufacture of yokes for dynamo electric machines

1977-10-27

1979-05-15

Larson, Lowell A.

Metal deforming

Process

Tube making or reshaping

72401, 72402, B21K 126

Patent

active

041540824

ABSTRACT:
A method of manufacturing a yoke for a dynamo electric machine wherein a transversely divided two-part mandrel is inserted into a hollow ferromagnetic sleeve of wall thickness and diameter equal to that of the required yoke. The mandrel defines the shape of the poles to be produced on the yoke and a plurality of punches are driven radially inwardly towards the yoke to deform the material of the sleeve into the dies defined by the recesses of the punches.

REFERENCES:
patent: 760086 (1904-05-01), Storey
patent: 1816859 (1931-08-01), Linders
patent: 2070906 (1937-02-01), Kruse

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