Method of connecting a stack of laminations for electric motors

Details Method of connecting a stack of laminations for electric motors Method of connecting a stack of laminations for electric motors

1990-07-20

1990-12-25

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

295221, 29609, 29736, 29738, H02K 1502

Patent

active

049792857

ABSTRACT:
A method of retaining a series of plates together in a stacked relationship, using integral projections and mating recesses formed by punching dies. As each plate is added to the stack, a restriking die is driven against the exposed face of the newly added plate to form transverse notches in the plate surface. The plate is thus deformed so that material flows into previously formed notches in a subjacent plate. The displaced material acts as a frictional interlock with the subjacent plate.

REFERENCES:
patent: 2254589 (1941-09-01), Williams
patent: 2975312 (1961-03-01), Ploran
patent: 3202851 (1965-08-01), Zimmerle et al.
patent: 4280275 (1981-07-01), Mitsui
patent: 4760632 (1988-08-01), Rapp

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