Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-04-28
1990-09-18
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29598, H02K 1500
Patent
active
049569104
ABSTRACT:
An armature core subassembly and a commutator to be assembled thereon are each centered on a common axis and rotated relative to one another until a desired angular alignment is obtained between a side edge of a commutator bar and the armature core slots. This orientation is maintained while the commutator is advanced to and pressed onto the armature shaft. A commutator placing machine is described in which a tang-oriented commutator is loaded into the nosepiece of a ram assembly and the ram assembly is rotated by a stepper motor until an edge of a commutator bar is detected at a predetermined location by an optical edge detector. Prior machines for tang-orientation and orientation by insulating gaps between commutator bars are also described.
REFERENCES:
patent: 1690322 (1928-11-01), Baker
patent: 3579771 (1971-05-01), Schuette
patent: 3624890 (1971-12-01), Schuette
patent: 3818570 (1974-06-01), DelBono
patent: 3911563 (1975-10-01), Anderson
patent: 4293805 (1981-10-01), Warner
patent: 4577399 (1986-03-01), Ott
Banner Alvin C.
Clemenz Gary E.
Varecka Frank D.
Walton Ballard E.
Dybvig Roger S.
General Motors Corporation
Globe Products Inc.
Hall Carl E.
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