Method and apparatus for electric motor assembly with bearing pr

Details Method and apparatus for electric motor assembly with bearing pr Method and apparatus for electric motor assembly with bearing pr

1993-02-05

1993-12-28

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29469, 29732, H02K 1502, H02K 1510

Patent

active

052728030

ABSTRACT:
A press fit machine for assembling an electric motor which includes a hub having an upper bearing and a stator assembly having a lower bearing, includes an upper and lower press fit fixtures for holding the hub and stator respectively in a preloaded condition prior to motor assembly and for a predetermined period of time afterward. The machine press fits the two halves of the motor together while maintaining appropriate preloads on the upper and lower bearings to prevent excess looseness in the bearings or excessive stiffness. The preload ensures that the bearing will function correctly after assembly because it is maintained during a period of time that the glue joining the hub and stator assembly together sets.

REFERENCES:
patent: 3538598 (1970-11-01), Wightman et al.
patent: 4048717 (1977-09-01), Piette

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