Method of making an electromagnetic coupling disc

Details Method of making an electromagnetic coupling disc Method of making an electromagnetic coupling disc

1987-12-14

1989-04-04

Hall, Carl E.

Electric heating

Metal heating

By arc

29607, 192 84PM, 21912167, B23K 2600, H01F 4102

Patent

active

048188409

ABSTRACT:
A method of forming slots in the coupling disc (e.g., the armature or rotor) of an electromagnetic coupling such as a clutch or brake. The method is carried out by effecting relative movement between the coupling disc and a laser beam in such a manner as to cause the beam to trace the perimeter of the slot to be formed and to cut a slug of material from the disc. Also disclosed are coupling discs in which opposing side walls of the slots converge toward one another and in which the side walls are concentric but obliquely inclined.

REFERENCES:
patent: 4187939 (1980-02-01), Silvestrini et al.
patent: 4317023 (1982-02-01), Gryskiewicz
patent: 4625093 (1986-11-01), Chyssolouris
patent: 4635774 (1987-01-01), Sekiguchi et al.
patent: 4685202 (1987-08-01), Booth

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