PROCESS FOR MANUFACTURING LAMINATED STATOR CORE

PROBLEM TO BE SOLVED: To provide a process for manufacturing a laminated stator core exhibiting excellent profile precision and electric characteristics with high yield. SOLUTION: The process for manufacturing a laminated stator core comprises a step for punching a stripe split yoke core piece where the yoke of the laminated stator core is split into two in the width direction and the outer circumferential side is developed linearly, a step for forming an outer circumferential side laminated yoke 10 by winding the core piece spirally and caulking, a step for punching a pole core piece with an inner circumferential side split yoke where the inner circumferential side of the laminated stator core is split for each magnetic pole, a step for forming a laminated magnetic pole 20 with an inner circumferential side split yoke by laminating a predetermined number of sheets of the core piece and caulking, a step for forming an intermediate assembly 30 having an annular inner circumferential side split yoke by connecting the ends of the inner circumferential side split yoke after winding the laminated magnetic pole 20, and a step for securing the laminated magnetic pole 20 with an inner circumferential side split yoke and the outer circumferential side laminated yoke 10 integrally by shrink fitting the outer circumferential side laminated yoke 10 to the outer circumference of the intermediate assembly 30. COPYRIGHT: (C)2006,JPO&NCIPI