Method of manufacture of a magnetic rotor core member for a rota

Details Method of manufacture of a magnetic rotor core member for a rota Method of manufacture of a magnetic rotor core member for a rota

1984-01-23

1985-12-17

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Electrical device making

72377, H02K 1502

Patent

active

045585113

ABSTRACT:
A method of manufacture of a magnetic rotor core member for a rotating-field dynamoelectric machine, particularly a small alternator, including the steps of: hot forging a segment of steel bar stock into a core blank approximating the external configuration desired for the rotor core member; de-burring the core blank; coining the core blank into closer conformation to the desired core member configuration; cooling the core blank; cold punching a shaft aperture through the central part of the core blank and simultaneously cold-compressing the core blank into closer conformity with the required dimensions for the finished rotor (or rough machining of a shaft aperture and rough machining of some elements of the blank); and, finally, cold-compressing the core blank to finished form as a rotor core member.

REFERENCES:
patent: 3271604 (1962-11-01), Priddy
patent: 4041754 (1977-08-01), Otani
Melvin H. Verson, "The Ford Sandusky Project, Nov. 2, 3 and 4, 1965, pp. 8-10.

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