MANUFACTURING METHOD OF ROTOR AND ROTOR

To reduce or cancel unbalance of a rotor without affecting the performance of a motor through simplified steps.SOLUTION: A manufacturing method of a rotor including insertion holes arrayed around an axial center in a circumferential direction, magnets and resins disposed in the insertion holes inclu...

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Bibliographische Detailangaben
Hauptverfasser: KATSUME AKIHITO, MORIMOTO MASAYA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To reduce or cancel unbalance of a rotor without affecting the performance of a motor through simplified steps.SOLUTION: A manufacturing method of a rotor including insertion holes arrayed around an axial center in a circumferential direction, magnets and resins disposed in the insertion holes includes: a first step of disposing the magnets and the resins in the insertion holes of a first group among the insertion holes and rotating the rotor at a first rotation speed to identify an unbalance position of the rotor; a second step of disposing the magnets and the resins in the insertion holes of a second group, which is relatively far from the unbalance position, among the insertion holes in which the magnets are not disposed in the first step, and rotating the rotor at a second rotation speed; and a third step of disposing the magnets and the resins in the insertion holes of a third group, which is relatively close to the unbalance position, among the insertion holes, in which the magnets are not disposed in the first step, and rotating the rotor at a third rotation speed lower than the second rotation speed.SELECTED DRAWING: Figure 7 【課題】簡略化された工程で、かつモータの性能に影響を及ぼすことなくロータのアンバランスを低減または解消する。【解決手段】軸心を中心として円周方向に配列された挿入孔と、挿入孔内に配置される磁石および樹脂とを含むロータの製造方法は、挿入孔のうち第1群の挿入孔に磁石および樹脂を配置し、ロータを第1の回転数で回転させてロータのアンバランス位置を特定する第1工程と、第1工程で磁石が配置されていない挿入孔のうち、アンバランス位置から相対的に遠い第2群の挿入孔に磁石および樹脂を配置し、ロータを第2の回転数で回転させる第2工程と、第1工程で磁石が配置されていない挿入孔のうち、アンバランス位置に相対的に近い第3群の挿入孔に磁石および樹脂を配置し、ロータを第2の回転数よりも少ない第3の回転数で回転させる第3工程とを含む。【選択図】図7