| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a laminate core and a manufacturing apparatus of the same in which an area not used for material preparation space in the conventional method can be used for the material preparation space to further improve material yield.SOLUTION: In a manufacturing method of a laminate core, materials for large diameter core plates 16A, 16B divided in a circumferential direction are got from areas 66a, 66b which are formed by punching a first annular plate 20A for a small diameter core and a second annular plate 20B for a small diameter core in a thin plate 52, and which are surrounded by: an outer peripheral circular arc part 64a of the first plate 20A for the small diameter core; an outer peripheral circular arc part 64b of the second plate 20B for the small diameter core; a center line Lc passing through the center in the width direction of the thin plate; side ends 52a, 52b of the thin plate; a first parallel line Lwhich passes through the center of the first plate 20A for the small diameter core and is parallel to the width direction of the thin plate; and a second parallel line Lwhich passes through the center of the second plate 20B for the small diameter core and is parallel to the width direction of the thin plate. |
