Worm gears are often used when large acceleration reductions are needed. The decrease ratio is determined by the number of begins of the worm and amount of the teeth on the worm equipment. But worm gears have sliding contact which is peaceful but tends to produce heat and have relatively low transmission efficiency.
Many worm gears have an interesting property that no other gear established has: the worm can easily turn the gear, but the gear cannot turn the worm. This is because the angle on the worm is so shallow that when the gear attempts to spin it, the friction between the equipment and the worm keeps the worm in place.
This feature is useful for machines such as for example conveyor systems, in which the locking feature can act as a brake for the conveyor when the motor isn’t turning. An added very interesting usage of worm gears is utilized on some high-performance cars and trucks.
For the materials for production, in general, worm is constructed of hard metal as the worm gear is made from relatively soft metal such as aluminum bronze. This is because the number of the teeth on the worm gear is relatively high compared to worm with its number of begins being generally 1 to 4, by reducing the worm gear hardness, the friction on the worm tooth is reduced. Another feature of worm manufacturing may be the need of specific machine for gear reducing and tooth grinding of worms. The worm gear, however, may be made out of the hobbing machine utilized for spur gears. But due to the different tooth shape, it is not possible to cut many gears simultaneously by stacking the apparatus blanks as can be carried out with spur gears.
The applications for worm gears include equipment boxes, fishing pole reels, guitar string tuning pegs, and in which a delicate acceleration adjustment by utilizing a huge speed reduction is necessary. When you can rotate the worm equipment by worm, it is usually not possible to rotate worm utilizing the worm gear. This is called the self locking feature. The self locking feature cannot always be assured and another method is preferred for accurate positive reverse prevention.
Also there is duplex worm gear type. When using these, it is possible to adjust backlash, as when one’s teeth put on necessitates backlash adjustment, without needing a change in the center distance. There aren’t too many producers who can generate this kind of worm.
The worm equipment is additionally called worm wheel.
Duplex Worm Gear
· Custom production according to customer request
· Diameter from 15 to 300 mm, axial distances from 17 to 210 mm, module from 0.5 to 10, shaft length up to 500 mm
· Materials selection according to consumer requirements (steel, bronze, fabric laminate or plastic-type material)
· All process steps (turning, hobbing, annealing, flank grinding, grinding, measuring) from an individual source
micro worm gear set
Ever-power manufactures worm gear sets, which are comprised of a worm and worm wheel, for make use of in a number of industries including aerospace and military instrumentation, medical, dental, oil and gas exploration, robotics, optical and commercial handles. Our precision worm gear sets can be manufactured to meet the latest AGMA/ISO specs up to the same as AGMA Q14 per AGMA 390. 03.
We offer an comprehensive collection of precision worm equipment collection options including:
Greatest Hand Worm and Worm Wheels
(Left hand on demand)
Anti-Backlash Worm Wheels
Pin Hub and Split Hub Worm Wheels
Browse our assortment of stainless- metal worms and bronze worm wheels. You may expect many regular sizes and also have the appearance expertise to manufacture tailor made worm tires to printing. Both our regular and customized worm tires are available several pitches, diameters, begins and ratios
worm gear pinion