Working Principle Of AC Gear Motor

The working principle of AC gear motor mainly includes the generation of rotating magnetic field and energy transfer process of AC motor, and the mechanical transmission principle of gear transmission.

Generation of rotating magnetic field and energy transfer process of AC motor
The working principle of AC motor is based on electromagnetic induction and rotating magnetic field. Taking three-phase asynchronous motor and three-phase synchronous motor as examples, when the three-phase stator winding is connected to the three-phase AC power supply, a rotating magnetic field will be generated. This rotating magnetic field will interlink the stator winding and the rotor winding, thereby realizing the energy transfer and conversion from the stator to the rotor. Specifically, when a single-phase sinusoidal current passes through the stator winding, an alternating pulsating magnetic field is generated, which can be decomposed into two rotating magnetic fields with opposite rotation directions. When the rotor is stationary, these two rotating magnetic fields generate two torques of equal magnitude and opposite direction in the rotor, making the resultant torque zero, so the motor cannot rotate.

Mechanical transmission principle of gear transmission
Gear transmission is a common mechanical transmission method that transmits torque and speed through the meshing of gears. The basic principles of gear transmission include the following aspects:

‌Gear type‌: Common gear types include spur gears, helical gears and bevel gears.
‌Transmission ratio calculation‌: The transmission ratio is the ratio of the number of teeth of the driving gear to the number of teeth of the driven gear, which determines the transmission relationship between the speed and torque.
‌Failure form‌: Gear transmission may fail due to wear, fatigue, fracture, etc. These factors need to be considered during design.
‌Lubrication method‌: Proper lubrication can reduce friction, improve transmission efficiency and service life‌.