학술논문
Motor for Injection Molding Machine, Rotor of Buried Magnet Motor
Document Type
Patent
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Source
Subject
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Abstract
There are provided a motor for an injection molding machine, and a rotor of a buried magnet motor. In a plate 22 constituting the rotor 20 of a servo motor, a columnar portion 25 formed between adjacent holding holes 24, 24 serves, at a portion between the inner circumferential end 25a and the intermediate portion 25c, as a holding portion 30 coming into line contact with a permanent magnet 23, which is thereby locked even during acceleration/deceleration of the servo motor. Consequently, the permanent magnet 23 does not butt against a specific part of the columnar portion 25. The gap between the holding portion 30 of the columnar portion 25 and the permanent magnet 23 may be filled with a filler to close the gap between them. Consequently, the permanent magnet 23 does not move in the holding hole 24 even during acceleration/deceleration of the servo motor.