System and method for selectively machining a D.C. motor

Details System and method for selectively machining a D.C. motor System and method for selectively machining a D.C. motor

1992-09-21

1994-01-11

Albritton, C. L.

Electric heating

Metal heating

By arc

21912174, 2191218, B23K 2614

Patent

active

052783863

ABSTRACT:
Apparatus and method for undercutting the insulation material below the surface of adjacent commutator bars on the armature of a direct current motor. A focused laser beam is directed substantially normal to the commutator surface. The beam can be delivered to the surface of the commutator by several different beam focusing and shaping technologies. The high energy beam is scanned over the surface as the armature is held in a fixture and allowed to rotate about its axis to cause the ablation of a predetermined amount of insulative material from between the commutator bars. A high pressure air nozzle is directed at the surface of the armature to remove particles ablated from the surface of the armature by the process.

REFERENCES:
patent: 3388314 (1968-06-01), Gould
patent: 4329564 (1982-05-01), Hazelton et al.
patent: 4339655 (1982-07-01), Lauroeach
patent: 4417124 (1983-11-01), Benedite et al.

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