Features and differences of worm gear and belt drive

Time：2020-05-24

The main difference and characteristic is that the worm gear transmission ratio is large, the belt transmission ratio is small; Worm gear transmission is vertical transmission, and belt transmission is parallel transmission; The worm gear transmission moment is small, while the belt transmission distance is large. Worm gear and worm drive efficiency is low, while belt drive efficiency is slightly higher; Worm gear and worm gear on the structure is more complex, the cost is relatively high.

The reducer worm belt transmission has the following characteristics:
1. It is self-locking. Worm helical Angle is very small, the worm can only drive the worm gear transmission, and the worm gear can not drive the worm rotation.
2. Worm transmission efficiency is low. It is generally believed that worm transmission efficiency is lower than gear transmission. Especially with self-locking worm drive, its efficiency is below 0.5, the general efficiency is only 0.7 ~ 0.9.
3, large heat, tooth surface easy to wear, high cost.
4, large transmission ratio, compact structure.
5, smooth transmission, no noise. Because the worm tooth is a continuous and uninterrupted spiral tooth, it is continuous when meshing with the worm gear tooth, and the worm tooth does not enter and exit the meshing process, so the work is smooth, impact, vibration and noise is small.

Last：The description and elaboration of the classification of gear reducer with hard tooth surface
Next：Causes of excessive vibration of planetary reducer