ROTOR, MOTOR AND METHOD FOR MANUFACTURING ROTOR

• Main Authors: KAMBE JUMPEI, KUWABARA MASANAO, NAKANISHI TORU
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a rotor having a configuration in which balance can be easily corrected, a motor, and a method for manufacturing the rotor.SOLUTION: After balance of a rotor 10 is measured, a balance correction step of providing a first end plate 11 with a first recess portion 115 for balance correction is executed based on a balance measurement result. In the balance correction step, in a state where a rotation center axis line L510 of a cutting tool 510 such as an end mill having a blade on an outer peripheral surface thereof is set in parallel to a first end surface 114 of the first end plate 11, a cutting tool 510 and a rotor 10 are moved relatively to each other in a direction orthogonal to the rotation center axis line L510, and the first recess portion 115 is provided in a region surrounded by a chord of a circle constituting the outer peripheral edge of the first end plate 11 and an arc of an angular range corresponding to the chord. At that time, air surrounding the cutting tool 510 is sucked.SELECTED DRAWING: Figure 8 【課題】バランスを修正しやすい構成のロータ、モータ、およびロータの製造方法を提供すること。【解決手段】ロータ１０のバランスを測定した後、バランスの測定結果に基づいて、第１端板１１にバランス修正用の第１凹部１１５を設けるバランス修正工程を行う。バランス修正工程では、外周面に刃が設けられたエンドミル等の切削工具５１０の回転中心軸線Ｌ５１０を第１端板１１の第１端面１１４に対して平行に設定した状態で切削工具５１０とロータ１０とを回転中心軸線Ｌ５１０に直交する方向に相対移動させて、第１端板１１の外周縁を構成する円の弦と弦に対応する角度範囲の円弧とに囲まれた領域に第１凹部１１５を設ける。その際、切削工具５１０の周りを吸気する。【選択図】図８