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The internal structure and working principle of the planetary gearbox

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The internal structure and working principle of the planetary gearbox

2021-04-09 16:42:11   |  The internal structure and working principle of the planetary gearbox

The planetary gearbox is also called the gearbox. Its structure is a mechanism in which multiple planetary gears rotate around a sun gear. It is also a mechanism that reduces the transmission speed ratio while increasing the torque of the motor proportionally.

 

planetary gears

 

Planetary gears can generally be divided into simple planetary gears and complex planetary gears. Simple planetary gears have a sun gear, an outer ring gear, a planet gear and a planet carrier. Complex planetary gears usually refer to a gear train that includes both a planetary gear train and a sun gear train.

 

Compared with simple planetary gears, complex planetary gears have the characteristics of high reduction ratio and high torque. Generally speaking, the shafts are parallel to each other, but there are also some planetary gears, such as a pencil sharpener, whose gear shafts are at a certain angle and use multiple spiral bevel gears.

 

Advantages: The advantages of planetary gears are large carrying capacity, small size, pure torque transmission, and stable operation. Moreover, multiple planetary gears can interact with each other. Disadvantages: The disadvantage of planetary gears is that their mechanical structure is relatively complex and requires certain manufacturing processes.

 

Another major disadvantage is that the efficiency of planetary gears decreases significantly as the transmission ratio increases, but this feature can be used for reduction gears.

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Noise analysis of planetary gearbox
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Planetary gearbox is an important component widely used in mechanical transmission. When a pair of gears mesh, due to the inevitable error of tooth pitch and tooth profile, meshing shock will occur during operation, which corresponds to the gear meshing frequency. Noise, friction noise also occurs due to relative sliding between tooth surfaces. Since gears are the basic parts of gearbox transmission, reducing gear noise is necessary to control gearbox noise.

Features and application of planetary gearbox
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Features and application of planetary gearbox:The planetary gearbox is also called the gearbox. Its structure is a mechanism in which multiple planetary gears rotate around a sun gear. It is also a mechanism that reduces the transmission speed ratio while increasing the torque of the motor proportionally.

Design technology of planetary gearbox reduction motor
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The planetary gearbox reduction motor has the characteristics of small size, compact structure and high transmission efficiency. At present, it has been widely used in gear transmission devices such as aero engines, lifting and transportation, and smart home kitchens. The planetary gearbox is a key part of the gearbox motor. , The production accuracy and production quality of the planetary gearbox directly affect the life of the planetary motor.

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