| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method for a stator core used under compression stress, in which an electromagnetic steel plate forming a stator core is subjected to surface processing for improving the efficiency of a motor, and deformation due to surface processing is prevented.SOLUTION: A stator core is formed by arranging in layers non-directional electromagnetic steel plates in which a process influence layer is caused in a back yoke 2 by performing surface processing. The surface processing is performed after at least one recessed part 4 is formed on the peripheral part of the non-directional electromagnetic steel plate, or after at least one through-hole 5 is formed within a predetermined range on the periphery side of the non-directional electromagnetic steel plate.</p> |
