Rotor core, rotor, rotor assembly and motor

Abstract

The invention relates to the technical field of motors, and discloses a rotor core, a rotor, a rotor assembly and a motor. The rotor core includes a first rotor core body and second rotor core bodiesrespectively disposed on both sides of the first rotor core body in an axial direction of the rotor core, wherein the second rotor core body includes a plurality of second rotor punching sheets capable of being taken and placed and axially stacked, each second rotor punching sheet is provided with a plurality of circumferentially spaced openings, the openings in the plurality of stacked second rotor punching sheets form axially extending dynamic balance body placement space of the second rotor core body. After the rotor core is disposed on a rotating shaft, the number of the second rotor punching sheets on both sides of the first rotor core body can be adjusted correspondingly, a rotor such as a large-outer diameter and short-axis length can be changed to an easy-to-adjust dynamic balanceassembly at an initial motor manufacturing stage, the time can be saved, and the dynamic balance adjustment precision is improved.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a rotor core, a rotor, a rotor assembly and a motor. Background technique [0002] The rotor of the motor is arranged on the rotating shaft, and the rotating shaft is arranged on the motor housing through the bearings at both ends, so that the rotation of the rotor drives the rotating shaft to rotate, thereby outputting the rotating power. The motor will vibrate during actual operation. [0003] The unbalanced rotor is one of the main causes of excessive vibration and noise of the motor, which will directly affect the working performance and service life of the motor. Therefore, it is very necessary to adjust the dynamic balance of the rotor. At present, there are mainly two ways to adjust the dynamic balance of the rotor, one is to remove weight, and the other is to increase weight. Regardless of adding weight or removing weight, it is necessary to find the dynamic and...

AI Technical Summary

Problems solved by technology

On the basis of not changing the rotor structure, it is difficult to adjust the dynamic balance to meet the requirements. Often the same rotor needs to be adjusted multiple times to meet the accuracy requirements, resulting in a waste of time and personnel. At the same time, it is difficult to guarantee the dynamic balance accuracy.

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