Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-02-06
1990-04-24
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
29736, H02K 1502
Patent
active
049188020
ABSTRACT:
This disclosure relates to a method and apparatus for assembling a rotor for a rotating electric machine, the rotor including a plurality of permanent magnet segments, and an outer sleeve or cylinder. A thin-walled metal cylinder is fashioned and arcuate magnet segments are positioned in angularly spaced relation against the interior surface of the cylinder. The segments are displaced radially outwardly to stretch or expand the outer cylinder, and the segments are then supported in the outwardly displaced positions. The segments may be displaced by a variety of devices including an expanding mandrel, a tapered part of a shaft and a tapered ring.
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Eley Timothy V.
Franklin Electric Co. Inc.
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