Manufacture method and manufacturing device for manufacturing magnet piece constituting magnet body for field pole disposed on rotating electric machine

A manufacturing device for manufacturing a magnet piece constituting a magnet body for a field pole disposed on a rotating electric machine by cleaving a permanent magnet body, comprising:

• a support portion supporting the permanent magnet body of which a surface is coated with a coating film for deterioration prevention on two fulcrums on both sides of a scheduled cleavage portion of the permanent magnet body;
• cleaving unit configured to cleave the magnet body into a cleaved magnet body and the magnet piece by pressing the scheduled cleavage portion of the permanent magnet body between the both fulcrums;
• and
• coating-film cutting unit configured to cut the coating-film between the cleaved magnet body and the magnet piece by pressing an end portion of the cleaved magnet piece from a pressing side of the scheduled cleavage portion, the end portion being on a side opposite to a cleavage surface side.