A large transmission ratio can be obtained, which is tighter than the staggered shaft helical gear mechanism
The meshing tooth surfaces of the two wheels are in line contact, and its bearing capacity is much higher than that of the staggered shaft helical gear mechanism
Worm transmission is equivalent to screw transmission, which is multi tooth meshing transmission, so the transmission is stable and the noise is very small
Self locking. When the lead angle of the worm is less than the equivalent friction angle between the meshing teeth, the mechanism has self-locking and can realize reverse self-locking, that is, the worm gear can only be driven by the worm.
The worm cannot be driven by the worm gear. Such as the self-locking worm mechanism used in its heavy machinery, its reverse self-locking can play a role in safety protection.
Low transmission efficiency and serious wear. In worm gear meshing transmission, the relative sliding speed between meshing teeth is large, so the friction loss is large and the efficiency is low.
