Worm gear reducerIt is often used in situations where two shafts are staggered, with large transmission ratios, low transmission power or intermittent work, to transmit the movement and power between the two cross shafts.The worm wheel and the worm are equivalent to the gear and the rack in the middle plane, and the worm and the screw are similar in shape.
　　Worm gear reducerfeature is:
　　1. A large transmission ratio can be obtained, which is more compact than the cross-shaft helical gear mechanism
　　2. The meshing tooth surfaces of the two wheels are in line contact, and its load-bearing capacity is much higher than that of the cross-axis helical gear mechanism
　　3. The worm drive is equivalent to a spiral drive, which is a multi-tooth meshing drive, so the transmission is stable and the noise is small
　　4. Has self-locking.When the lead angle of the worm is smaller than the equivalent friction angle between the meshing gear teeth, the mechanism is self-locking and can realize reverse self-locking, that is, the worm can only be driven by the worm, but the worm cannot be driven by the worm.

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