Apparatus and methods for making and using slot closure wedges a

Details Apparatus and methods for making and using slot closure wedges a Apparatus and methods for making and using slot closure wedges a

1978-11-27

1980-11-18

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

295646, 295648, 29734, 493360, 493442, H02K 1510

Patent

active

042337291

ABSTRACT:
Apparatus includes pinch wheels that both advance wedge material stock and also substantially permanently form the stock material to precise dimensional tolerances by reducing the material thickness; means by which the formed material is retained in the formed configuration thereof; wedge severing means; and means for loading severed wedges into a wedge magazine. One of the pinch wheels is driven through a clutch-brake system arranged so that it may be driven unidirectionally only from a reciprocating drive arm. The wedges have precisely controlled dimensional tolerances and dimensional stability, with the result that the wedges lie squarely in stator core slots (when the wedges are inserted into such slots), and "wire over wedge" problems associated with skewed wedges in stator core slots are overcome.

REFERENCES:
patent: 3324536 (1967-06-01), Hill
patent: 3447225 (1969-06-01), Eminger
patent: 3579818 (1971-05-01), Arnold et al.
patent: 3626432 (1971-12-01), Fohl
patent: 3758937 (1973-09-01), Ott
patent: 3805357 (1974-04-01), Peters
patent: 3829953 (1974-08-01), Laner et al.
patent: 3831255 (1974-08-01), Smith et al.
patent: 3872568 (1975-03-01), Morr
patent: 3909902 (1975-10-01), Peters
patent: 4136433 (1979-01-01), Copeland et al.
MPC Publication, S/N, 8-3652-1.

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