Gear transmission refers to a device that transmits motion and power through gear pairs. It is the most widely used mechanical transmission method among various modern equipment. It has accurate transmission, high efficiency, compact structure, reliable operation, and long service life.
Among various transmission forms, gear transmission is the most widely used in modern machinery. This is because gear transmission has the following characteristics:
1) High transmission accuracy. As mentioned earlier, belt transmission cannot guarantee accurate transmission ratio, and chain transmission cannot achieve constant instantaneous transmission ratio, but the transmission ratio of modern commonly used Involute gear is theoretically accurate and constant. This is not only a key requirement for precision machinery and instruments, but also an important condition for reducing dynamic loads and achieving smooth transmission under high-speed and heavy loads.
2) Wide application range. The power range transmitted by gear transmission is extremely wide, ranging from 0.001W to 60000 kW; The circumferential speed can be very low or as high as 150m/s, which is difficult to compare with belt and chain drives.
3) It can achieve transmission between any two axes in space such as parallel axis, intersecting axis, and staggered axis, which is also impossible for belt transmission and chain transmission.