What is the principle of gear transmission?

The principle of gear transmission is to transmit the rotational motion and torque of one gear to another through the meshing of two or more gears, thereby achieving the transmission of power and motion.

When the driving gear drives the driven gear to rotate, the teeth press and roll against each other, causing the direction of motion, speed, and torque to change in a certain proportion.

The transmission ratio of gear transmission depends on the ratio of the number of teeth of the two gears: the more teeth the driven gear has, the slower the speed, but the greater the torque. According to the relative position of the gear axes, gear transmission can be divided into cylindrical gear transmission, bevel gear transmission, and worm gear transmission, etc.

Due to precise gear meshing and small sliding, gear transmission has the advantages of high transmission efficiency, compact structure, and long service life. It is widely used in mechanical equipment such as automobile transmissions, machine tools, and wind turbines, and is one of the most important forms of modern mechanical transmission.