CUTTING METHOD AND CUTTING DEVICE FOR MANUFACTURING MAGNET PIECE FOR CONSTITUTING FIELD POLE MAGNET BODY ARRANGED TO ROTARY ELECTRIC MACHINE BY CUTTING PERMANENT MAGNET BODY

摘要

PROBLEM TO BE SOLVED: To prevent abnormal crack which obliquely develops from starting position of the crack when cutting a magnet body.;SOLUTION: A cutting method for manufacturing a magnet piece 31 for constituting a field pole magnet body 80 arranged to a rotary electric machine A by cutting a permanent magnet body 30, comprises the steps of: pressing the magnet body 30 downward from above a cutting position 73 between two supporting points 71, 72 in a state where the magnet body 30 is supported by the supporting points 71, 72 so that the magnet body 30 is cut into the cutoff magnet body 30 and the magnet piece 31 which is smaller than the cutoff magnet body; and giving a moment to the magnet piece 31 in a direction reverse to a moment generated in the magnet body 30 by pressing the magnet body 30 while cutting the magnet piece.;COPYRIGHT: (C)2013,JPO&INPIT