Steel sheets for stator cores, stator cores with the steel sheets and munufacture thereof

PROBLEM TO BE SOLVED: To reduce the loss in a steel strip, so as to eliminate the deformation of a stator core itself by arranging caulking sections at specific locations of a member for stator core and, after punching the caulking sections, providing cut sections on the outer periphery of the member for stator core, corresponding to the punched caulking section by punching the outer periphery of the member for stator core. SOLUTION: Cut sections (e), and (g), (f) and (h) are provided perpendicular to center lines (c) and (d), connecting the center of a member 8(1) for stator core and members 7(2) and 8(2) for stator core which are brought into contact with the member 8(1), by leaving cutting margins at the locations where the lines (c) and (d) intersect the outer periphery of the member 8 (1), and caulking sections Ke, Kf, Kg, and Kh are provided perpendicular to the lines (c) and (d) on the outer edge of the member 8(1), corresponding to the cut sections (e), (f), (g), and (h). Since the entire outer periphery of the member 8(1) is punched, including the cut sections (e), (f), (g), and (h) after the caulking sections Ke, Kf, Kg, Kh, etc., arranged at specific positions have been punched, a narrow steel strip can be used.