Vibration is a very critical performance index requirement for motor products, especially for some precision equipment and places with high environmental requirements, the performance requirements for motors are more stringent or even severe.

Regarding the vibration and noise of the motor, we have also had many topics, but there are always some new or personalized information input from time to time, which triggers our analysis and discussion again.

In the process of motor production and processing, the dynamic balance of the rotor, the static balance of the fan, the balance of the large motor shaft, and the accuracy of the machined parts have a great impact on the vibration performance of the motor, especially for high-speed motors, the accuracy and appropriateness of the balance equipment It has a great influence on the overall balance effect of the rotor.

Combined with the case of the faulty motor, it is necessary for us to summarize and summarize some problems existing in the dynamic balancing process of the rotor. Most of the cast aluminum rotors are dynamically balanced by adding weight on the balance column. During the balancing process, the matching relationship between the balance block hole of the counterweight and the balance column, and the reliability of the balance and fixation must be controlled in place; Some rotors that are suitable for use of balance weights, most manufacturers use balance cement for balancing. If the balance cement is deformed or displaced during the curing process, it will cause the final balance effect to deteriorate, especially for motors that are put into use. Serious vibration problem with the motor.

The installation of the motor has a great influence on the vibration performance. The installation reference of the motor should ensure that the motor is in a stable state. In some applications, it can be found that the motor is in a suspended state and even has the adverse effect of resonance. Therefore, for the motor installation reference requirements, the motor manufacturer should communicate with the user as necessary to reduce and eliminate such adverse effects. It should be ensured that the installation datum has sufficient mechanical strength, and the matching relationship and positional relationship between the installation datum and installation effect of the motor and the driven equipment should be guaranteed. If the foundation of the motor installation is not firm, it is easy to cause vibration problems of the motor, and in severe cases, the foot surface of the motor will break.

For the motor in use, the bearing system should be regularly maintained according to the use and maintenance requirements. On the one hand, it is the performance of the bearing, and on the other hand, it is also the lubrication condition of the bearing. Damage to the bearing system will also cause the vibration of the motor.

The control of the motor test process should also be based on a reliable and firm test platform. For the problems of uneven platform, unreasonable structure, and even unreliable platform foundation, the vibration test data will be distorted. This problem must be caused by the test organization. of high attention.

During the use of the motor, check the fastening of the fixing points between the motor and the foundation, and add necessary anti-loosening measures when tightening.

Similarly, the operation of the driven equipment has a direct impact on the operation of the motor. Therefore, for the vibration problem of the motor that occurs during the use process, the state verification of the equipment should be used for screening, so as to analyze and solve the problem in a targeted manner.

In addition, the different shaft problems that occur during the long-term operation of the motor also have a great impact on the vibration performance of the motor. Especially for large-scale suspended motors, regular maintenance and maintenance are the key to preventing vibration problems.