Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (05): 170-177.doi: 10.13475/j.fzxb.20210600108

• Machinery & Accessories • Previous Articles     Next Articles

Research on modification of planetary gear transmission system used in textile machineries

MO Shuai1,2(), LIU Zhipeng1,2, LUO Bingrui1,2, CEN Guojian3, XU Jiake3, GAO Hanjun4   

  1. 1. School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
    2. Tianjin Modern Electromechanical Equipment Technology Key Laboratory, Tianjin 300387, China
    3. Ningbo Zhongda Leader Transmission Equipment Co., Ltd., Ningbo, Zhejiang 315301, China
    4. State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing 100191, China
  • Received:2021-06-01 Revised:2022-02-06 Online:2022-05-15 Published:2022-05-30

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Abstract:

In order to meet the requirements of high transmission efficiency and low noise of the planetary reducer for textile machineries, a three-dimensional digital prototype of the planetary reducer was constructed, and on this basis, the contact analysis and tooth surface modification research of the second-stage planetary gear transmission system of the reducer were carried out. The gear transmission error, meshing stiffness, and tooth surface normal force were used as evaluation indexes to study the modification of the planetary gear. By changing modification parameters to analyze its influence on the modification index parameters, the best modification plan of the planetary gear system was finalized. Studies show that the peak transmission error of the planetary gear transmission system is reduced from 0.68 μm before modification to 0.25 μm after modification, reducing by about 63%. The normal force of the tooth surface and the meshing rigidity of the gear teeth are reduced to varying degrees and improved. The impact of the planetary gear meshing in and out is effectively improved, and the transmission efficiency of the planetary gear transmission system is effectively improved, and it provides a reference for the vibration and noise reduction of the planetary gear transmission system.

Key words: planetary transmission, gear modification, transmission error, tooth surface normal force, meshing stiffness, textile machinery

CLC Number: 

  • TH132

Fig.1

Tooth profile modification diagram"

Fig.2

Tooth modification diagram"

Tab.1

Parameters of the second stage planetary gear"

齿轮 齿数 模数/mm 压力角/(°) 螺旋角/(°) 齿宽/mm
太阳轮 30 0.85 20 12 17
行星轮 30 0.85 20 12 16
内齿轮 90 0.85 20 12 18

Fig.3

Precision planetary reducer"

Fig.4

Transmission error (a) and mean square error of transmission error (b) under different modification curves"

Fig.5

Transmission error and normal force of different tooth profile modification. (a) Sun gear-planetary gear transmission error; (b) Planetary gear-ring gear transmission error; (c) Transmission error of the secondary planetary gear train; (d) Mean square error of planetary gear train transmission error; (e) Sun gear-planetary gear normal force; (f) Planetary gear-inner gear ring normal force"

Fig.6

Sun gear-planetary gear meshing stiffness"

Fig.7

Planetary gear-ring gear meshing stiffness"

Fig.8

Transmission error and normal force of different tooth modification amount. (a) Sun gear-planetary gear transmission error; (b) Planetary gear-ring gear transmission error; (c) Transmission error of the secondary planetary gear train; (d) Mean square error of planetary gear train transmission error; (e) Sun gear-planetary gear normal force; (f) Planetary gear-inner gear ring normal force"

Fig.9

Transmission error and normal force of comprehensive modification with different modification amount. (a) Sun gear-planetary gear transmission error; (b) Planetary gear-ring gear transmission error; (c) Transmission error of the secondary pla-netary gear train; (d) Mean square error of planetary gear train transmission error; (e) Sun gear-planetary gear normal force; (f) Planetary gear-inner gear ring normal force"

Fig.10

Contact area of planetary gear"

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