LAMINATED ROTOR AND MANUFACTURING METHOD FOR LAMINATED ROTOR

摘要

A manufacturing method for a laminated rotor includes inserting a bridge member into a magnetic flux leakage suppression hole, thus allowing a tip of the bridge member to project from an end surface of the laminated steel sheet, and bringing a die surface of a die member into pressure contact with an end surface of the laminated steel sheet and filling a molten resin into a gap between a magnet hole and a magnet body in a state where an opening of the magnet hole is closed. A length of the bridge member is larger than a thickness of the laminated steel sheet. The die member includes a housing portion. The housing portion houses the tip of the bridge member projecting from an end surface of the laminated steel sheet.

主权项

1. A manufacturing method for a laminated rotor, in which the laminated rotor includes a laminated steel sheet, a magnet body, and a nonmagnetic bridge member, the laminated steel sheet has a magnet hole and a magnetic flux leakage suppression hole for suppressing magnetic flux leakage, the manufacturing method comprising:
inserting the magnet body into the magnet hole; inserting the bridge member into the magnetic flux leakage suppression hole so a tip of the bridge member projects from an end surface of the laminated steel sheet, the bridge member having a length larger than a thickness of the laminated steel sheet; bringing a die surface of the die member into pressure contact with the end surface of the laminated steel sheet; and filling a molten resin in a gap between the magnet hole and the magnet body in a state where an opening of the magnet hole is closed, the die member including a housing portion, the housing portion housing the tip of the bridge member projecting from the end surface of the laminated steel sheet.