| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost of manufacture.SOLUTION: In a method of manufacturing a lamination iron core 10, a plurality of annular iron core pieces 14 each configured by a plurality of arcuate iron core pieces 12 arranged annularly are laminated while shifting phase in a circumferential direction to manufacture a lamination iron core main body 16. Next, at a plurality of portions (a plurality of welding parts 18) arranged in the circumferential direction at an inner peripheral part or an outer peripheral part of this lamination iron core main body 16, the arcuate iron core pieces 12 phase-shifted in the circumferential direction, of each layer, are welded in the lamination direction. Thereby, because the arcuate iron core pieces 12 of each layer can be integrally coupled, a dedicated facility for simultaneously performing caulking and lamination is not required. As a result, the cost of manufacture can be reduced. |
