US 7,451,538 B2Granted

Method for fabricating rotor assembly

AssigneeReliance Electric Technologies, LLC

InventorWilliam P. Pizzichil

Life of this patent

Estimating the term…

Loading patent…

Abstract

In accordance with one embodiment, the present technique provides an apparatus for assembling a rotor. The exemplary apparatus includes a base that has a central aperture and a seating surface for receiving the rotor. An arbor then extends through the central aperture, the arbor having a longitudinal axis that is substantially orthogonal to the seating surface, and including threaded ends opposite with respect to one another. The exemplary apparatus also includes at least one member of a family of fixtures coupleable to the arbor, the family including a pressure fixture that has first and second piston assemblies disposed at diametrically opposite locations to one another, the family also including a support fixture coupleable the arbor and having members extending axially therefrom, the members being configured to support securing members of the rotor. Advantageously, the exemplary apparatus provides for a mechanism through which a securing member may be symmetrically installed with respect to the rotor core, thus improving rotor performance and construction.

Claims7

Dependent claims

A method of assembling a rotor having a plurality of rotor laminations disposed between first and second end rings, comprising:

supporting the rotor on a seating surface of a base structure having a arbor extending from the base structure such that the arbor extends through a shaft chamber of the rotor;
providing insertion forces to a first set of diametrically opposite securing members positioned with respect to the first end ring to drive securing members axially inward with respect to the rotor, about conductor bars of the rotor and into end slots of the first end ring;
and
providing insertion forces to a second set of diametrically opposite securing members positioned with respect to the first end ring to drive securing members axially inward with respect to the rotor about conductor bars of the rotor and into end slots of the second end ring;
wherein each of the securing members has an interior section dimensioned to receive the conductor bar with a press fit to secure the conductor bar to the securing member, and an exterior section dimensioned to be press fit in the end slots of the end ring to secure the securing member to the end rings.

2 more elements

Dependencies are inferred from the claim text.