Motor rotor assembling process

Abstract

The invention discloses a motor rotor assembling process, relates to the assembling process of a motor rotor and mainly solves the problems that magnetic shoe adhesive is adhered to the rotor iron core directly and currently and the stability and position are difficult to guarantee. The process includes a, adopting a special tooling fixture to fix a rotor iron core in the middle of the fixture, fixing an aluminum ring to the fixture, and guaranteeing the concentricity of the rotor iron core and aluminum ring; b, adopting a pressing fixture to press a magnetic shoe between the rotor iron core and aluminum ring with the controlled concentricity, and allowing the magnetic shoe to fit to the external circle of the rotor iron core and the internal circle of the aluminum ring; c, integrating a rotor shaft and a magnetizer conductor composed of the rotor iron core, the magnetic shoe and the aluminum ring through an injection molding part in an injection molding manner; d, turning the external circle of the permanent magnetic rotor through a lathe after injection molding, performing dynamic balancing, adjusting the dynamic balancing scale by the material increasing method, and achieving the design requirements. The process has the advantages of high efficiency, fine performances and long service life.

Description

technical field [0001] The invention relates to a motor rotor, in particular to an assembly process of the motor rotor. Background technique [0002] At present, the manufacture of high-speed rotors by most manufacturers adopts the method of directly gluing the magnetic tiles on the rotor core. Since the permanent magnet part and the rotor core are glued together, the permanent magnet part is exposed outside the rotor. , this structure bonds the permanent magnets to the surface of the rotor core by gluing, it is difficult to ensure the firmness and position, and the adhesive colloid is likely to cause colloidal damage due to the long-term operation of the motor and the different use environments Loss of function, so that the permanent magnet part falls off. In addition, during the coating process of the colloid, it is difficult to control the thickness of each part, so it is likely to cause excessive dimensional error after the permanent magnet part is bonded and formed, re...

AI Technical Summary

Problems solved by technology

[0002] At present, the manufacture of high-speed rotors by most manufacturers adopts the method of directly gluing the magnetic tiles on the rotor core. Since the permanent magnet part and the rotor core are glued together, the permanent magnet part is exposed outside the rotor. , this structure bonds the permanent magnets to the surface of the rotor core by gluing, it is difficult to ensure the firmness and position, and the adhesive colloid is likely to cause colloidal damage due to the long-term operation of the motor and the different use environments Loss of function, causing the permanent magnet part to fall off

In addition, during the coating process of the colloid, it is difficult to control the thickness of each part, so it is likely to cause excessive dimensional error after the permanent magnet part is bonded and formed, resulting in the phenomenon of bore sweeping, which eventually leads to permanent magnet rupture or excessive friction temperature. irreversible demagnetization

Another method is to bind the permanent magnets together with insulating binding tape, which brings more problems, because the binding tape is made of plastic material, which is easy to soften at high temperature, resulting in loosening, and once loosened, it is likely to cause fixed magnets. The relative movement of the rotor is terminated, that is, the phenomenon of jamming

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