| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a laminated iron core obtaining sufficient caulking strength and preventing generation of defective parallelism and interlayer spaces of the laminated iron core even with a large iron core constituted of thin sheet iron core pieces. SOLUTION: In the manufacturing method in which iron core pieces 14 punched by a punch 13 are successively caulked and laminated by using a press-retaining ring 15 to support the iron core pieces by pressing them from the periphery and a receiving block 16, when the iron core piece 14 is caulked and laminated on the preliminarily punched iron core piece 14, the caulking-lamination is performed by providing the force in the direction opposite to the pressing direction of the punch 13 to the iron core pieces 14 by an elastic member 23 arranged on a loading block 22 below a supporting plate 24 with the iron core pieces 14 stacked thereon, and the loading block 22 is lowered by the lowering amount of the supporting plate 24 before the punch 13 is elevated. The manufacturing device 10 has a control means to lower the loading block 22 according to the movement of the supporting plate 24 detected by a distance sensor 26. COPYRIGHT: (C)2006,JPO&NCIPI
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