Patent ID: 6092277
Filing Date: 2000-07-25
Classification: H02K,Y10T

Abstract:
A method for reducing movement of a rotor cage relative to a rotor core in a rotor assembly, said rotor assembly including a) a hollow rotor core of substantially cylindrical shape having an outer surface, said rotor core having a plurality of substantially longitudinally extending slots formed in said outer surface; b) a rotor bar positioned within at least some of said slots, each rotor bar having an exposed longitudinal surface; and c) end rings secured to said rotor bars, comprising:positioning the rotor cage on the rotor core;applying a swage tool against a portion of the exposed longitudinal surface of said rotor bar; andforming at least one depression in at least one of said rotor bars to displace material, thereby deforming a portion of said rotor bar adjacent said depression, and causing a portion of said rotor core adjacent said depression to deform, said rotor bar deformation with said rotor core deformation substantially fixing said rotor bar into a desired position with respect to said rotor core.