What is a worm?

Worm is a common mechanical transmission device, which is composed of worm gear and rod parts. It has self-locking and deceleration functions, and is widely used in mechanical equipment in various industries.

Worm drive is a transmission mode that transmits the rotating motion of the drive shaft to the driven shaft through the worm gear. A worm consists of a rod-shaped part with a helical shape and a worm gear engaged with it. In the transmission process, the worm rotation drives the worm gear to rotate, making the driven shaft output at a lower speed. The worm drive is self-locking and keeps the position of the output shaft stable even when the rotation is stopped.

The deceleration ratio of worm drive is usually larger, which can reach more than 10:1. This means that after the high-speed rotation of the input shaft passes through the worm drive, the speed of the output shaft will be significantly reduced. Therefore, worm drive is widely used in the need to reduce speed and increase torque occasions, such as machine tools, lifting equipment, conveying machinery and so on. Worm drive also has the advantages of compact structure, multi-stage transmission and good stability, which plays an important role in industrial production.

Worm drive can not only achieve deceleration drive, but also achieve reverse rotation. By changing the relative position of the input shaft and the output shaft, the worm drive can realize the self-locking function of the fixed shaft. This makes worm drive has great flexibility and reliability in mechanical equipment. However, worm drives are less efficient and subject to friction and heat loss, so they need to be selected carefully in applications where high efficiency is required.

In summary, worm is a common mechanical transmission device, consisting of worm gear and rod parts. It has self-locking and deceleration functions, and is widely used in mechanical equipment in various industries. Worm drive has the advantages of compact structure, multistage transmission and stability, which can realize the high-speed rotation of the input shaft to the low-speed output shaft, and can realize the self-locking function of the fixed shaft. However, the efficiency of worm drive is relatively low, and it needs to be comprehensively considered according to the specific situation in application. With the continuous development of technology, worm drive will be further improved and applied in engineering design.