gear

                                   
Gear is a mechanical component with continuous meshing of gear on the rim to transfer motion and power. The application of gears in transmission appeared very early. At the end of the 19th century, the development of the principle of tooth cutting method and the use of this principle of tooth cutting special machine tools and tools have appeared, with the development of production, the smoothness of gear operation by attention.

 

Gear is generally used in the need for compact transmission structure, variable speed, variable speed ratio, transmission power, high transmission accuracy "place". Watches, toys, elevators, automatic doors and many other aspects of daily life are used in gear, especially in cars, tractors, engineering machinery, ships, machine tools, mining machinery and other fields widely used in gear. Gears are used in almost all mechanical