How to choose gear parameters for planetary reducers

Release Time：

2024-09-24

selects a smaller backlash when driving pulsating rotation. If it is a relatively balanced load, a slightly larger backlash should be selected. Thus producing low-noise, high-quality planetary gearbox products.

The selection of gear parameters for planetary reducers has a significant impact on noise. Specifically, the planetary reducer uses high-quality low-carbon alloy steel through gear grinding technology to reduce noise and vibration. However, when facing pairing combinations, many operators need to pay attention to the working tooth surface hardness of the small gear being slightly lower than that of the large gear.

Spiral elevators can consider using gears of different sizes and materials to mesh with each other while meeting the strength requirements, which can also achieve the purpose of noise reduction.

1. Using a smaller pressure angle can reduce operating noise, and considering the impact of intensity, it is usually taken as 20 °.

When the structure allows, the use of helical gears should be given priority, as their vibration and noise are greatly reduced compared to spur gears. Generally, the helix angle should be selected between 8 ℃ and 20 ℃.

2. On the premise of meeting the bending fatigue strength, when the center distance of the reducer is constant, a larger number of teeth should be selected to improve the coupling degree, ensure smooth driving, and reduce noise. On the premise of meeting the driving requirements, the number of teeth of the large and small gears should be made mutually proportional as much as possible, in order to disperse and eliminate the influence of gear manufacturing errors on the driving. It is also possible to periodically mesh a certain tooth on the large and small gears to make the driving smooth and reduce noise.

3. Within the economic capacity of users, the precision level of gears should be improved as much as possible during design. Precision grade gears produce much less noise than low precision grade gears.

When producing planetary reducers, in order to reduce the noise of gear reducers,