ROTATING ELECTRIC MACHINE AND METHOD FOR MANUFACTURING ROTOR CORE

摘要

[Problem] To increase the efficiency of a rotating electric machine. [Solution] A rotating electric machine 1 has: a stator core 21; a rotor core 31 provided with a plurality of laminated steel sheets 37 and having an axial direction dimension Lr shorter than that of the stator core 21; and a permanent magnet 32 buried in the rotor core 31 and having an axial direction dimension Lm shorter than that of the rotor core 31. The rotor core 31 is structured by laminating the steel sheets 37 having a hardenability and been heat-treated. The stator core 21 has a plurality of teeth 23b around which stator windings 25 are wound and a connection part 23a for connecting the ends of the teeth 23b on the inner circumferential side in a cylindrical shape.