Even if the worm gear operators are widely used in our daily life, most of you still do not have a clear idea about them. Many people may know that it is one of the most basic transmission devices. It is a very important mechanical part, and can be seen in many applications.

Now, let us see the second category, i.e. the helical gears. They are similar to the first category except that the worm gear operators teeth are at an angle with the axis of the gears. Besides, they are more refined than the spur gears. Compared to them, helical gears operate with less noise and vibration. At any time, the load on them is distributed over several teeth which can reduce the wear. But every coin has two sides, obviously, helical gears also have some disadvantages except those advantages. For instance, one disadvantage is a resultant thrust along the axis of the gear, which needs to be accommodated by appropriate thrust bearings, and a greater degree of sliding friction between the meshing teeth, often addressed with additives in the lubricant.

Another category of gear operatorI have to mention is the worm gear operator. A worm gear operator is used when a large speed reduction ratio is required between crossed axis shafts which do not intersect. Efficiency of worm gear drives depends to a large extent on the helix angle of the worm.
The above are the three important types of worm gear operators. All of them have their own characteristics and functions. At the same time, they are all very useful for different machines. Thus, it is quite necessary for you to learn something about them.

What is the worm gear operator? A worm gear operator is a toothed machine part, such as a wheel or cylinder that meshes with another toothed part to transmit motion or to change speed or direction. It is a transmission configuration for a specific ratio of engine to axle torque in a motor vehicle. And one advantage of this device is that the teeth of a gear operator can prevent slipping. Since they are applied in different machines such as cars, bicycles, and large equipment, there must be various kinds to meet different requirements. The following are some different types of them.

Firstly, the simplest type of worm gear operators the bevel gear operator which have straight teeth, and are mounted on parallel shafts. Sometimes, many of them are used at once to create very large gear reductions. Because this kind is so common, they can be used in many daily electrical household appliances like electric screwdriver, washing machine and clothes dryer. But to our surprise, they are rarely applied in cars. That is because worm gear operator can be really loud. Each time a gear tooth engages a tooth on the other one, the teeth collide, and this impact makes a noise. Moreover, it also increases the stress on the gear operator teeth. In order to reduce the noise and stress in them, most of gears in cars are helical.