Rotor processing method capable of reducing motor vibration and noise

A processing method and rotor technology, applied in the direction of adjusting/balancing the rotor, manufacturing the stator/rotor body, etc., can solve the problems that are difficult to achieve low vibration intensity and low structural noise

Inactive Publication Date: 2013-04-03
SHANGHAI ELECTRICAL APP RES INST +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, for low-noise motors, the above-mentioned processes are difficult to mee

Method used

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Embodiment Construction

[0016] In order to make the present invention more comprehensible, preferred embodiments are described in detail as follows.

[0017] The invention provides a rotor processing method for reducing motor vibration and noise, the steps of which are as follows:

[0018] The first step, the first coarse grinding: In order to meet the requirements for the surface roughness of the bearing bracket support during the first calibration of the rotor, the first rough grinding is carried out on the bearing bracket and the outer circle of the iron core of the rotor, and the second A machining allowance of 0.15-0.20mm is left for the second fine grinding.

[0019] The second step, the first dynamic balance calibration: when the mass of the rotor is not greater than 300kg, the residual unbalance is controlled within 0.50-1.00g (inclusive); when the mass of the rotor is greater than 300kg, the residual unbalance is controlled within 1.00-1.50g ( Inclusive). The purpose is to make the rotor i...

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Abstract

The invention provides a rotor processing method capable of reducing motor vibration and noise. The processing method is characterized by including step one, performing coarse grinding on a bearing retainer of a motor and an external circle of an iron core; step two, performing a first dynamic balance correction; step three, performing a second fine grinding on the rotor; and step four, performing a second dynamic balance correction. Grinding and dynamic balance correction are performed twice for the rotor processing, compared with grinding and dynamic balance correction which are performed once, the motor vibration severity is improved by at least one standard grade, structural noise is reduced by 3-5dB, different motors have different specific circumstances, air noise is reduced due to reduction of the vibration severity and the structural noise, and therefore vibration and noise reduction effects are obvious.

Description

technical field [0001] The invention relates to a rotor processing method for twice grinding and twice calibrating dynamic balance for reducing motor noise and vibration, and belongs to the technical field of motor manufacturing. Background technique [0002] The cast aluminum rotor of the motor is generally a rigid body, and the wound rotor can also be a rigid body after being fixed by the winding brackets at both ends. In order to reduce the noise and vibration of the motor, the rotor processing needs to meet: ①The roundness of the bearing gear, the dimensional accuracy and the surface roughness meet the high-precision requirements specified in the drawing; ②The residual unbalance of the rotor meets the high-precision dynamic balance accuracy requirements. [0003] The motor industry usually adopts the rotor processing technology of grinding once and calibrating the dynamic balance, which basically meets the vibration and noise requirements of general motors. However, for...

Claims

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Application Information

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IPC IPC(8): H02K15/02H02K15/16
Inventor 叶丽花何兵赵佳敏韩素芳杨超
Owner SHANGHAI ELECTRICAL APP RES INST
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