| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated iron core capable of effectively preventing generation of defective products while employing a laminate bonding method along with a rotating lamination process, and to provide its manufacturing method and apparatus. SOLUTION: In a rotating lamination process, an iron core sheet 2 is laminated on a top surface of an iron core sheet group 3 with a torque being given by a rotating die, and there may be some remaining torque (rotational inertia) at lamination. However, in this system, when the iron core sheet 2 sits on the top surface of the iron core sheet group 3, a caulking protrusion portion K2 formed on a bottom surface of the iron core sheet 2 fits into a caulking recess portion K3 (or a metering hole K1) formed on the top surface of the another iron core sheet 2 which lies on the top of the iron core sheet group 3, thus preventing an overrun from a normal position of the iron core sheet 2. COPYRIGHT: (C)2007,JPO&INPIT
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