METHOD OF MANUFACTURING ROTOR OF ROTARY ELECTRIC MACHINE

• Main Authors: HAMAZAKI MITSUMASA, TERAMOTO MASAYA
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a method of manufacturing a rotor of a rotary electric machine, that is capable of improving magnetic force as well as mechanical strength by increasing a compression load, while suppressing cost by integrally molding a magnet and a shaft via compression molding.SOLUTION: A method of manufacturing a rotor of a rotary electric machine comprises: a shaft processing step of performing processing so as to form a plurality of grooves parallel to an axial direction of a shaft on an outer-periphery of the cylindrical shaft; a magnet molding step of manufacturing a magnet assembly via integral-molding by intrusion of cylindrical magnets arranged on the outer-periphery of the shaft into the plurality of groves, and solidification thereof; and a rotor assembly assembling step of manufacturing a rotor by attaching a first ring member arranged on one end face side and a second ring member arranged on the other end face side of the magnet in the axial direction of the shaft to the magnet assembly manufactured by the magnet molding step.SELECTED DRAWING: Figure 2 【課題】圧縮成形による磁石とシャフトの一体成形で、コストを抑制しながら、圧縮荷重を上げることで磁力および機械的強度の向上が得られる回転電機のローターの製造方法を提供する。【解決手段】円柱形のシャフトの外周にシャフトの軸方向に平行な複数の溝を形成するように加工するシャフト加工工程と、シャフトの外周に配置された円筒形の磁石が複数の溝に入り込んで固着して一体に成形して磁石アセンブリを製造する磁石成形工程と、磁石成形工程によって製造した磁石アセンブリに、シャフトの軸方向における磁石の一端面側に配置された第一のリング部材と他端面側に配置された第二のリング部材を取り付けてローターを製造するローターアセンブリ組立工程を備えた。【選択図】図２