| 摘要 |
PROBLEM TO BE SOLVED: To provide a stator stacked core which improves caulking accuracy and dimensional accuracy at dual take of a rotor core piece and a stator core piece, without deteriorating the magnetic property of a magnetic pole piece, when forming a thin part and drawing the magnetic pole piece. SOLUTION: In the stator stacked core 10, which is constituted by stacking stator core pieces 17 that are punched, being aligned with rotor core pieces 36, out of a magnetic metallic plate 32 from which the rotor core pieces 36 are punched out, the magnetic pole shank piece 20 of each stator core piece 17 is provided with a concentric thin part 24, which is elongated flatly inward in its radial direction by pressing it from its thickness direction, and besides, the thickness of the thin part 24 is in the range of 50-95% of the thickness of the magnetic metallic plate 32, and the radial width of the thin part 24 is in the range of 30-100% of the radial length of the magnetic shank piece 20. COPYRIGHT: (C)2011,JPO&INPIT |
