Are the Rotation Directions of Worm and Worm Wheel the Same?

[KinsleyLynn]

The rotation directions of the worm and worm wheel must be the same when they are meshed; only with the same rotation direction can they engage and make contact. Below is an extended introduction about the meshing of worm and worm wheel: Principle of Worm and Worm Wheel Meshing: When the teeth of the two meshing gears come into contact, the action and reaction forces between the tooth surfaces generate contact stress on the working surfaces. Due to the changing position of the meshing point and the periodic motion of the gears, the contact stress varies in a pulsating cycle. Characteristics of Worm and Worm Wheel: It can achieve a large transmission ratio, which is more compact than crossed helical gear mechanisms. The meshing tooth surfaces of the two gears are in line contact, significantly increasing their load-bearing capacity compared to crossed helical gear mechanisms. Worm gear transmission is equivalent to screw transmission, involving multi-tooth meshing, resulting in smooth operation and very low noise. It has a self-locking feature; when the lead angle of the worm is smaller than the equivalent friction angle between the meshing teeth, the mechanism can achieve self-locking, enabling reverse self-locking.