| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a laminated rotor iron core having belt iron core pieces spirally wrapped, laminated, mutually caulked, and coupled which manufactures the laminated rotor iron core with the form accuracy and good productivity so as to save energy and improve an output and the efficiency. SOLUTION: The manufacturing method of the laminated rotor iron core includes a process for presenting a shape of the laminated rotor iron core linearly developed, providing a cutout formed at a side edge corresponding to an inner circumference at a predetermined interval, providing the circular side edge corresponding to the inner circumference between the adjacent cutouts and corresponding to an inner circumference of a shaft hole, and pressing a metal plate and forming the belt iron core pieces with a magnet mounting hole or a diecast metal filling hole formed in the middle in the width direction at the predetermined interval, and a process for locally pressing and expanding a side edge corresponding to an outer circumference of the belt iron core pieces, spirally wrapping and laminating the belt iron core pieces and mutually caulking and coupling the laminated belt iron core pieces. COPYRIGHT: (C)2006,JPO&NCIPI
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