Working principle of micro AC reduction motor

Working principle of micro AC reduction motor

The working principle of the miniature AC reduction motor can be summarized as two main parts: motor rotation and reducer deceleration. ‌The following is a detailed description of how it works:‌

Motor rotation principle

The motor used inside the miniature AC reduction motor is mainly an AC motor, and its working principle is based on the principle of electromagnetic induction. ‌When alternating current passes through the stator windings of a motor, ‌a rotating magnetic field is produced. ‌This rotating magnetic field interacts with the conductors in the motor's rotor, ‌producing induced currents (‌eddy currents)‌ in the rotor. The interaction force between the induced current and the rotating magnetic field (the Lorentz force) causes the rotor to start rotating. ‌The rotation direction of the rotor is the same as the rotation direction of the rotating magnetic field, ‌The rotation speed is related to the frequency of the power supply and the number of pole pairs of the motor. ‌

Reducer deceleration principle

The micro AC reduction motor is equipped with a gear reducer on the motor body, which is used to reduce the speed and increase the torque. ‌The working principle of the reducer is to achieve the purpose of reduction by meshing the small gear in the gear set with the large gear. ‌When the high-speed rotation of the motor passes through the reducer, ‌the small gear drives the large gear to rotate. ‌Since the large gear has more teeth than the small gear, ‌the speed of the large gear will decrease,‌and the torque will increase. ‌This reduction effect can be further enhanced by multi-stage gear transmission to meet different application requirements. ‌

Common reducer types in micro AC reduction motors include planetary gear reducers and worm gear reducers. The planetary gear reducer is composed of a sun gear, a planet gear and an internal ring gear. The deceleration is achieved through the rotation and revolution of the planet gear. ‌The worm gear reducer is composed of a worm gear and a worm. The rotation of the worm drives the worm gear to rotate, ‌ achieving the deceleration effect. ‌

The micro AC reduction motor generates rotational power through the electromagnetic induction principle of the AC motor, and reduces the rotational speed to the required range through the deceleration effect of the gear reducer, while increasing the torque output. ‌This kind of motor is very useful in applications that require low speed and ‌high torque, ‌such as automation equipment, ‌robots, ‌precision instruments and other fields. ‌

Please note that the above information is for reference only, and the specific working principles may vary depending on the motor model and manufacturer. ‌In practical applications, ‌it is recommended to refer to the technical manual of the specific product or consult the manufacturer for accurate information. ‌