Worm gear is a common transmission mechanism, which is widely used in industrial production. Its simple structure, high transmission efficiency,
long service life, so it is favored. This paper will introduce the characteristics of worm gear structure in detail from three aspects.
First, the first feature: high transmission efficiency
1.1 Principle of worm gear structure
Worm gear and worm are a pair of meshing elements, wherein worm gear is a shape of the ellipsoid of rotation, the number of teeth is less;
The worm is a rack shaped as a rotating cylinder, and the number of teeth is more. When the two engage, due to the action of friction and rolling friction,
large deceleration can be achieved when rotating at different angles.
1.2 Reasons for high transmission efficiency
Since only a gear with a small number of teeth and a small diameter engages with a rack with a large number of teeth and a large diameter during operation,
friction and rolling friction reduce transmission losses. At the same time, there is a small gap between the two at work,
so that the "backlash phenomenon" common in other mechanical drives can be avoided, thereby improving the transmission efficiency.
Second, the second feature: simple structure
2.1 Composition of worm gear structure
The worm gear structure is composed of worm gear, worm and support frame. The worm gear and worm are the main meshing elements, and the
support frame is used to fix and support the entire transmission mechanism.
2.2 Advantages of simple structure
Because of its simple structure, low manufacturing cost, easy maintenance, and no additional equipment such as lubricating oil, it is widely used
in industrial production.
Third, the third feature: long service life
3.1 Wear resistance of worm gear structure
Since only a gear with a small number of teeth and a small diameter engages with a rack with a large number of teeth and a large diameter during operation,
friction and rolling friction reduce transmission losses. At the same time, there is a small gap between the two at work, so that the "backlash
phenomenon" common in other mechanical drives can be avoided, thereby reducing wear.
3.2 Reasons for long service life
Because the worm gear structure has high transmission efficiency, simple structure and small friction loss, it has a long service life. At the same time, in
the working process, because there is no backlash phenomenon, it will not produce noise and vibration problems.
In summary, the worm gear structure has three characteristics, such as high transmission efficiency, simple structure and long service life.
These characteristics make it widely used in industrial production.
