Patent ID: 9350217
Filing Date: 2016-05-24
CPC Classification: H02K,Y10T

Claim Text:
1. A method of forming a rotor, wherein the rotor includes a plurality of conductor bars each joined to a shorting ring, the method comprising: stacking a plurality of conductive lamination layers adjacent one another to define a faying interface between each pair of adjacent conductive lamination layers and thereby form the shorting ring; wherein each of the plurality of conductive lamination layers defines a plurality of cavities therethrough, and wherein the shorting ring has an outer edge, a mating surface, and an exterior surface spaced apart from the mating surface; wherein the rotor is rotatable about an axis of rotation and further wherein the exterior surface extends along a plane that is perpendicular to the axis of rotation; after stacking, aligning each of the plurality of cavities of one of the plurality of conduction lamination layers with each of the plurality of cavities of every adjacent conductive lamination layer to thereby define a plurality of channels through the shorting ring, wherein each of the plurality of channels extends from the mating surface to the exterior surface through an entire thickness of the shorting ring and the channels are spaced apart from one another along the outer edge; after aligning, disposing: assembling a steel lamination assembly, wherein the steel lamination assembly includes: after disposing, deforming the end of each of the plurality of conductor bars so that the end face is flat, extends along the plane, and does not protrude from the exterior surface; and after disposing, brazing the end of each of the plurality of conductor bars to the shorting ring to form the rotor, wherein brazing includes depositing a braze material within each of the plurality of channels so that the braze material abuts the shorting ring and abuts and extends along the outer surface of each of the plurality of conductor bars within each of the plurality of channels.