What Are The Selection Requirements Of The Gear Motor?

Deceleration motor is a power transmission mechanism, which reduces the high speed of the motor (such as AC motor, DC motor, etc.) to the required low speed, and at the same time increases the output torque.

Working principle

The reducer motor is mainly composed of two parts: the motor and the reducer. The electric motor provides the power source and produces high-speed rotational motion. The reducer decelerates the speed of the motor through gears, worm gears or planetary gears and other transmission devices. For example, in a geared motor, deceleration is achieved by meshing gears of different sizes with each other. The pinion is connected to the motor shaft, and the big gear is connected to the output shaft. According to the gear ratio, when the pinion drives the big gear to rotate, the speed of the output shaft will be reduced.

 

The selection secret of the deceleration motor is: the power of the motor, the output speed, the torque of the motor and the deceleration ratio, and the model of the deceleration motor can be determined by clarifying the above four points.

 

The output speed of the reducer motor is closely related to the input speed of the motor and the reduction ratio of the reducer. The reduction ratio is the ratio of the input speed of the reducer to the output speed. Let the input revolution of the motor be n1 and the reduction ratio be i, then the output revolution of the reduction motor n2=n1/i.

 

The manner in which the reduction ratio is determined

The size of the reduction ratio depends on the gear configuration inside the reducer or the parameters of other transmission devices (such as worm gear, planetary gear, etc.). In a gear reducer, the reduction ratio is equal to the ratio of the number of teeth of the driving gear to the number of teeth of the driven gear. If it is a multi-gear reduction, the total reduction ratio is the product of the reduction ratio of each gear.

 

Torque is a special moment that causes an object to rotate. For the deceleration motor, according to the law of conservation of energy, the input power is equal to the output power when the energy loss is ignored. The relationship between power (P), torque (T) and speed (w) is, where w=2πn (n is the speed, in rps, that is, revolutions per second)