公开(公告)号：US20240322658A1

公开(公告)日：2024-09-26

申请号：US18603618

申请日：2024-03-13

Applicant: MITSUI HIGH-TEC, INC.

Inventor： Yasunari MITSUI ,  Yusuke HASUO ,  Shinichiro ONO

IPC: H02K15/02 ,  H02K1/06

CPC classification number: H02K15/02 ,  H02K1/06 ,  H02K2215/00

Abstract: A manufacturing method for a laminated iron core, the manufacturing method includes: a punching process of punching a metal sheet to form a plurality of punched members including a first punched member and a second punched member; and a laminating process of forming a laminated body by laminating the plurality of punched members while changing a rotational lamination angle each time one or more punched members are laminated. In the laminating process, the plurality of punched members are laminated such that the rotational lamination angle is the same between the first punched member and the second punched member adjacent to each other in a boundary portion between two or more of the first punched members that are continuously laminated and two or more of the second punched members that are continuously laminated.