Reduction motors are a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. Adding gear components to ordinary DC motors can easily improve the speed conversion. Generally speaking, the speed of the motor output is fixed, but the speed can be adjusted by a reducer composed of gears and shafts.
Common reduction motor classifications are as follows:
1) Planetary reduction motors are characterized by a relatively compact structure, small return clearance, high precision, long service life, and a large rated output torque, but the price is slightly expensive.
2) The main feature of the worm gear reducer is that it has a reverse self-locking function, can have a large reduction ratio, and the input shaft and output shaft are not on the same axis or on the same plane. However, it is generally larger in size, has low drive efficiency, and low precision.
3) The harmonic drive of the harmonic reduction motor uses the controllable elastic deformation of the flexible element to transmit motion and power. It is small in size and has high precision, but the disadvantage is that the flexible wheel has a limited life, is not impact-resistant, and has poor rigidity compared to metal parts.
Gear motors are generally used for low-speed and high-torque driving equipment. The purpose of deceleration is achieved by meshing the gear with fewer teeth on the input shaft of the gear motor with the large gear on the output shaft to reduce the speed of the electric motor, internal combustion engine or other running power. Ordinary gear motors will also have several pairs of gears with the same principle to achieve the ideal deceleration effect. The ratio of the number of teeth of the large and small gears is the drive ratio.
