METHOD OF MANUFACTURING LAMINATED ROTOR CORE

摘要

A method of manufacturing a laminated rotor core, including inserting permanent magnets into magnet insertion portions of an iron core formed by laminating plural core sheets; and thereafter to fix the magnets, injecting resin into the magnet insertion portions from a resin reservoir part in a die holding the iron core; the method comprising: a first process of placing a segment dummy plate between the body and the die, the plate covering one or more of the plural magnet insertion portions individually and including a resin injection hole continuing thereto; a second process of injecting the resin from the resin reservoir part of the die through the resin injection hole of the plate to the corresponding magnet insertion portions; and a third process of detaching the dummy plate with excess resin after the resin injected to the magnet insertion portions is cured; and the method improving a resin sealing process.