General Electric Company

General Electric Corporation Gmbh

Vijay P Chahar

Michael A Cook

Daniel M Saban

Harold Clifton Kingrey

Robert David Sirois

James J Holich

Peter J Klug

A method for making a core for one of a rotor and a stator for use in an electric motor, the core being formed from a plurality of laminations, includes forming a predetermined number of through-material slots in a first portion of a material stock, forming at least one angled interlocking projection in the material stock, the projection having a circumferential length and being formed so that at least a portion of the projection remains integral with the material stock, cutting the material stock to define a receiving opening corresponding to the interlocking projection, the receiving opening positioned relative to the projection at an angle &phgr; that is a whole number multiple of &bgr;, where &bgr; is an angle defined as a ratio of 360 degrees to the number of slots and cutting the material stock to form a first substantially circular lamination. Second and third laminations are formed in kind. The second lamination is rotated relative to the first lamination and positioned on the first lamination such that the projection from the first lamination engages the receiving opening in the second lamination. The third lamination is positioned on and rotated relative to the second lamination in kind to form the core.

Method for forming motor with rotor and stator core paired interlocks

A motor rotor or stator core is formed of a plurality of stacked generally circular laminations. The stack defines at least one inner lamination having laminations positioned adjacent to both sides of the lamination. Each lamination has a predetermined number of circumferentially equally spaced slots or bar elements extending radially at about an edge thereof. The inner laminations include at least one interlocking projection formed in one of the surfaces at a predetermined radial distance from the center of the lamination. The laminations further define at least one projection receiving region formed therein to engage the projection when the laminations arc in the stacked formation. The projection receiving region is spaced from the interlocking projection by an angle .phi. that is a whole number multiple of .beta., where .beta. is an angle defined as a ratio of 360 degrees to the number of slots. A method for making the stacked core is also disclosed.

Motor with rotor and stator core paired interlocks

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Fort Wayne, IN, United States of America

Vijay P Chahar