| 摘要 |
A method of producing a laminated variant-shaped core 10, comprising: Step A of punching out a required number of core sheets 12-14 for each of plural types, from a strip 11 to be processed, to form the outlines of the core sheets 12-14, and push back the punched out core sheets 12-14 into the strip 11; Step B of forming cutouts 28, 30 and 32 reaching outer peripheries of outer plates 27, 29 and 31, the outer plates 27, 29 and 31 being the same in outer shape and respectively containing thereinside the core sheets 12-14, the cutouts 28, 30 and 32 having inner edges respectively in contact with the core sheets 12-14; Step C of forming caulking portions 21 in each of the core sheets 12-14 and caulking portions 33 in each of the outer plates 27, 29 and 31; Step D of punching out the outer plates 27, 29 and 31 from the strip 11 to form the outlines of the outer plates 27, 29 and 31, and laminating and interlocking the core sheets 12-14 to form the variant-shaped laminated core 10 and laminating and interlocking the outer plates 27, 29 and 31; and Step E of removing the outer plates 27, 29 and 31 located outside the laminated and interlocked variant-shaped core 10. The method permits dramatic productivity improvement when compared with conventional methods.
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