Brushless motor rotor is a type of motor rotor that uses permanent magnets to replace traditional brushes and electrodes. It has the advantages of high efficiency, low noise, and long life, and is widely used in various motors. When manufacturing brushless motor rotors, dynamic balancing is a very important process that can ensure the stability and lifespan of the rotor. Hangzhou Jizhi will introduce the relevant knowledge of rotor dynamic balance of brushless motors in this article.
1、 Composition of Brushless Motor Rotors
Brushless rotor mainly consists of permanent magnet, rotor core, and rotor shaft. Entre eles, permanent magnets are the main magnetic field source of the rotor, the rotor core is an important component that supports and fixes the permanent magnet, and the rotor shaft is a component that connects the rotor core and motor bearings.
2、 The principle of dynamic balancing for brushless rotors
The principle of brushless rotor dynamic balance is the same as that of traditional motor rotors, which means that by adding a correction mass to the rotor, there will be no obvious vibration during rotation. The purpose of brushless rotor dynamic balancing is to eliminate the unbalanced mass of the rotor and minimize the vibration of the rotor during operation.
3、 The process of dynamic balancing of brushless rotors
The process of dynamic balancing of a brushless rotor includes steps such as calculating and installing the correction quality, rotor vibration testing, and dynamic balancing correction. The specific process is as follows:
(1) Calculation and installation of correction mass: Em primeiro lugar, based on the geometric dimensions, material density, and other parameters of the brushless rotor, calculate the size and position of the correction mass that needs to be installed on the rotor, and then install the correction mass in the corresponding position.
(2) Rotor vibration testing: After installing and correcting the quality, conduct vibration testing on the rotor, measure the vibration amplitude and phase of the rotor, and record it.
(3) Dynamic balance correction: Based on the vibration test results, calculate the size and position of the correction mass that needs to be increased or decreased, and perform corresponding dynamic balance correction. Repeat the above steps until the vibration amplitude and phase of the rotor meet the requirements.
Importance of Dynamic Balancing of Brushless Rotors
The importance of brushless rotor dynamic balancing lies in avoiding rotor vibration and noise caused by unbalanced mass, extending the service life of the rotor, and improving the efficiency and performance of the motor. In order to control the vibration, noise, and service life of permanent magnet brushless motors, it is necessary to achieve a high level of rotor dynamic balance accuracy. Choosing the newly developed brushless rotor dynamic balancing machine by Jizhi can effectively solve the dynamic balancing problem of brushless rotors and improve production efficiency.