WPX250,WPDX50,WPDX60,WPDX70,WPDX80 Planetary gear reducer is a device widely used in the field of mechanical transmission, and its core part is the gear transmission system. Its transmission principle is based on the basic principle of gear meshing, which achieves power transmission and deceleration through the rotation of planetary gears. The following will provide a detailed introduction to the transmission principle of planetary gear reducers.
1、 The rotation of planetary gears
The planetary gear reducer mainly includes an inner ring gear and a planetary gear system. The planetary gear system consists of several planetary gears evenly distributed on a ring gear, which are supported on the planetary shaft by needle roller bearings or ball bearings. When power is input into the planetary gear system, the planetary gear will rotate around the inner ring gear, thereby achieving power transmission.
2、 The meshing of gears
In a planetary gear reducer, the inner ring gear is fixed and the planetary gear transmits power through meshing with it. The meshing process of gears includes three stages: tooth surface contact, tooth surface sliding, and tooth surface withdrawal. During the contact stage, the tooth surface gradually approaches and generates a certain amount of pressure; In the sliding stage, the pressure between the tooth surfaces gradually increases, and relative sliding occurs between the tooth surfaces, forming frictional force; In the exit stage, the tooth surface gradually separates and the friction force gradually decreases.
3、 Power transmission
Each planetary gear in a planetary gear system is an independent transmission unit, with power input from the input shaft, transmitted through the planetary gear system, and ultimately output to the output shaft. During the transmission process, the power passes through the meshing of multiple planetary gears, achieving deceleration and torque increase of the power.
4、 Calculation of transmission ratio
The transmission ratio of a planetary gear reducer is equal to the ratio of the speed of the input shaft to the output shaft multiplied by the ratio of the number of planetary gears to the number of inner ring teeth. Specifically, if the input shaft speed is n1, the output shaft speed is n2, the number of planetary gears is z1, and the number of inner ring teeth is z2, then the transmission ratio i=n1/n2 x z1/z2.
In summary, the transmission principle of planetary gear reducers is to transmit and reduce power through the rotation of planetary gears and the meshing of gears. It has the characteristics of high transmission efficiency, high load-bearing capacity, and high precision, and is widely used in fields such as machinery, chemical industry, and petroleum.
