worm wheel

Worm gears are often used when large quickness reductions are needed. The decrease ratio is determined by the number of begins of the worm and number of teeth on the worm gear. But worm gears have sliding get in touch with which is quiet but will produce heat and have relatively low transmission efficiency.
As for the materials for production, in general, worm is made of hard metal while the worm gear is made from relatively soft metallic such as aluminum bronze. This is since the number of the teeth on the worm gear is relatively high in comparison to worm using its number of starts being generally 1 to 4, by reducing the worm gear hardness, the friction on the worm the teeth is reduced. Another feature of worm manufacturing is the need of specialized machine for gear cutting and tooth grinding of worms. The worm gear, on the other hand, may be made with the hobbing machine utilized for spur gears. But because of the various tooth shape, it isn’t possible to cut many gears simultaneously by stacking the gear blanks as can be done with spur gears.
The applications for worm gears include equipment boxes, angling pole reels, guitar string tuning pegs, and in which a delicate speed adjustment by utilizing a large speed reduction is necessary. When you can worm wheel china rotate the worm gear by worm, it is generally extremely hard to rotate worm utilizing the worm gear. That is called the self locking feature. The self locking feature cannot always be assured and a separate method is recommended for accurate positive reverse prevention.

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