Worm gear reducer is a power transmission mechanism that uses gear speed converters to reduce the number of revolutions of a motor (motor) to the required number of revolutions and obtain a larger torque. Among the mechanisms used to transmit power and motion, the worm gear reducer has a wide range of applications. It can be seen in the transmission system of all kinds of machinery, from ships, automobiles, locomotives, heavy machinery used in construction, processing machinery and automated production equipment used in the machinery industry, to common household appliances in daily life , Clocks and so on.

In the transmission mode of the worm gear reducer, the worm gear transmission has the characteristics that other gear transmissions do not have, that is, the worm can easily rotate the worm wheel, but the worm wheel cannot rotate the worm. This is because the structure and transmission of the worm gear is achieved through friction. The self-locking function of worm gear transmission is very useful in mechanical applications, such as winches, conveying equipment and so on. However, it is also because of the frictional transmission method of the worm gear that the transmission efficiency of the worm gear is much lower than that of gear transmission. Not all worm gear reducers have good self-locking function, and the self-locking function of worm gear can be realized only when a certain speed ratio is achieved. This is related to the lead angle, that is, the self-locking function of the worm gear with a small speed ratio is not so ideal.