The planetary gear reducer is a fully hardened planetary gear reducer, with parallel shaft gear transmission for the high-speed stage, and planetary gear transmission for the intermediate and low-speed stages. The large and small gears of the planetary gear, sun gear, and parallel shaft transmission are all treated with low-carbon alloy steel carburizing quenching heat treatment and grinding processing technology. The precision of the external gear is level 6 precision, and the precision of the internal gear is level 7 precision. The tooth root is strengthened by shot blasting to improve the bending strength of the tooth root.
Main Features
Compared with ordinary gear transmission, planetary gear transmission has a series of outstanding advantages when their component materials, mechanical properties, manufacturing accuracy, working conditions, etc. are the same.
(1) Small size, light weight, compact structure, high transmission power, and high load-bearing capacity; This feature is determined by internal factors such as the structure of planetary gear transmission: ① power splitting ② reasonable application of internal meshing ③ coaxial transmission device.
(2) Large transmission ratio; As long as the type and gear matching scheme of planetary transmission are appropriately selected, a large transmission ratio can be obtained using a few gears. In planetary mechanisms primarily used for transmitting motion rather than as power transmission, their transmission ratios can reach several thousand. In addition, planetary gear transmission can achieve the synthesis and decomposition of motion, as well as complex movements such as stepped and continuously variable transmission, due to the fact that all three of its components can be transmitted.
(3) High transmission efficiency; Due to the symmetrical split transmission structure adopted by planetary gear transmission, which has several uniformly distributed planetary gears, the action is balanced with the reaction force in the center wheel and arm bearings, which is conducive to improving transmission efficiency. With appropriate selection of transmission type and reasonable structural arrangement, its efficiency can reach 0.97-0.99.
(4) Smooth movement, strong resistance to impact and vibration; Due to the use of several identical planetary gears evenly distributed around the central wheel, the inertial forces of the planetary gears and the rotating arm can be balanced with each other. At the same time, the number of teeth involved in meshing also increases, so the motion of planetary gear transmission is smooth, with strong resistance to impact and vibration, and reliable operation.
