PUNCH PROCESSING METHOD FOR LAMINATED IRON CORE AND METHOD FOR MANUFACTURING LAMINATED IRON CORE

摘要

A punching method for a laminated iron core according to the present invention is a method for punching a plurality of steel plates continuously into a mold and punching a plurality of steel plates in a stacked state in a plurality of steps formed in the metal mold A method of punching a plurality of superposed portions (F _A ) located at the outer side of a closed curve (L) corresponding to the outermost periphery of a laminated iron core and a fixed portion (F _B ) And a step of punching the outermost periphery of the laminated iron core after fixing each steel sheet to each other.