Method of manufacturing a magnetic rotatable member for an elect

Details Method of manufacturing a magnetic rotatable member for an elect Method of manufacturing a magnetic rotatable member for an elect

1985-12-30

1987-06-02

Crane, Daniel C.

Metal deforming

With cutting

Machining after final metal-deforming

72348, 29159R, 29602R, 192 12D, 192 84C, B21D 5300, B21D 5326

Patent

active

046692959

ABSTRACT:
An electromagnetic clutch includes a first rotatable member of magnetic material having an axial end surface and a hollow portion in which an annular electromagnetic device is disposed in a stationary position. A second rotatable member, such as a drive shaft, is provided within the first rotatable member. A hub is secured on the second rotatable member and a magnetic armature plate is supported on and around the hub. The magnetic armature plate, which faces the axial end surface of the first rotatable member at a predetermined axial air gap, is capable of limited axial movement and is attracted to the first rotatable member when the electromagnetic device is energized to frictionally engage the first rotatable member. In particular, in the electromagnetic clutch of this invention, the first rotatable member includes an outer cylindrical member, an inner cylindrical member and an axial end plate member which has an axial end surface connected therebetween, with the outer diameter of the axial end plate member exceeding the diameter of the outer cylindrical member and the inner diameter being smaller than the diameter of the inner cylindrical member.

REFERENCES:
patent: 3672042 (1972-06-01), Jaeschke
patent: 4314472 (1982-02-01), Saegusa et al.
patent: 4445606 (1984-05-01), Van Laningham
patent: 4526257 (1985-07-01), Mueller
Jones, Franklin D., Die Design and Diemaking Practice, The Industrial Press, London, Second Ed., 1941, pp. 582-585.

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