What is the difference between the working principle of gear reducer and planetary reducer?
Release time:
2024-08-08
The gear reducer realizes deceleration through direct meshing of gears of different sizes, while the planetary reducer uses the special structure of the planetary gear set to achieve the purpose of deceleration and torque increase.
The working principle of gear reducer:
The gear reducer mainly relies on the meshing of gears with different numbers of teeth to realize the conversion of speed and torque. Usually the small gear on the input shaft drives the large gear on the output shaft, or a combination of multi-stage gears to achieve a larger reduction ratio.
For example, in a simple two-stage gear reduction system, the high-speed rotation of the input shaft is driven by the first-stage pinion to drive the large gear for the first reduction, and then through the second-stage gear transmission to further reduce the speed and increase the torque. Output.
The working principle of planetary reducer:
The core structure of the planetary reducer is the planetary gear set, including the sun gear, planetary gear and ring gear. The sun gear is used as an input component, the planetary gear revolves around the sun gear while also rotating, and the inner ring gear is fixed or used as an output component.
For example, when the sun gear inputs high-speed rotation, the planetary gear revolves around the sun gear under its drive, and transmits power through the planet carrier to achieve deceleration and torque increase.
In general, gear reducers achieve deceleration through direct meshing of gears of different sizes, while planetary reducers use the special structure of planetary gear sets to achieve the purpose of deceleration and torque increase. Planetary reducer has the advantages of small size, strong carrying capacity, and high transmission efficiency, but the manufacturing process is relatively complicated and the cost is high; the gear reducer has a relatively simple structure and low cost, but in some high-precision and high-load application scenarios, Planetary reducer has more advantages.
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