Patent ID: 8205320
Filing Date: 2012-06-26
Classification: H02K,Y10T

Abstract:
1. A method of manufacturing a rotating electric machine, the method comprising: forming a rotor by fixing a rotor core having p number of magnetic poles around a shaft which is a rotational axis, forming m number of split cores by stacking a plurality of split core members each of which includes a yoke portion and one magnetic pole tooth portion protruding from the yoke portion inward in a radial direction, and forming a stator by winding a coil around the respective split cores to be arranged in an annular shape around an outer circumference of the rotor, wherein the m number of split cores are formed by: punching m number of split core members from steel sheets so that a plurality of split core members punched from one sheet are arranged relative to each other to form an annular pattern as they are punched from the one sheet, stacking the punched split core members by a predetermined thickness while maintaining the annular pattern to form n number of (where n≧2) annularly arranged laminates, matching an i-th annularly arranged laminate among the n number of annularly arranged laminates with a first annularly arranged laminate at a location of the magnetic pole tooth portions, and stacking the i-th annularly arranged laminate by rotating the i-th annularly arranged laminate by a predetermined angle αi (where 0<αi<2π and i=2 to n) with respect to the first annularly arranged laminate, and wherein the stator is formed by: arranging the m number of split cores formed in this manner in the annular pattern in a stack of the annularly arranged laminates.