Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (5): 1628-1634.doi: 10.13229/j.cnki.jdxbgxb20200410

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Calculation of adhesive wear of involute cylindrical spur gear under low⁃speed conditions

Wei CHEN1(),Yu-long LEI1,Xing-zhong LI1,Yao FU1(),Jian-long HU2,Li-guo HOU1   

  1. 1.State Key Laboratory of Automotive Simulation and Control，Jilin University，Changchun 130022，China
    2.Qingdao Automotive Research Institute，Jilin University，Qingdao 266100，China
  • Received:2020-06-11 Online:2021-09-01 Published:2021-09-16
  • Contact: Yao FU E-mail:chenwei16@mails.jlu.edu.cn;fu_yao@jlu.edu.cn

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Abstract:

Aiming at gear wear in the transmission system of vehicles at low speeds， which affects the service life of the transmission system， a calculation method for tooth surface adhesive wear of involute cylindrical spur gears is proposed based on the load distribution coefficient model considering the depth of tooth surface wear and the Archard wear model. The wear amount of the tooth surface of the spur gear was obtained. The evolution rule of the tooth surface wear was studied， and the accuracy of the model was verified by comparison with the published paper. Meanwhile， the effects of tooth surface load and wear factor on the tooth surface wear depth were studied， and the relationship between the two factors was revealed. The tooth surface load will directly affect the wear coefficient and further affect the tooth surface wear depth. The simulation results show that： the wear amount of area near the pitch point of the involute cylindrical spur gear is almost zero； the wear of the tooth surface near the tooth root of the pinion is the most serious； the amount of wear on the tooth surface near the alternating area of single tooth meshing and double tooth meshing has abrupt changes relative to other positions.

Key words: mechanical design and theory, spur gear transmission, low-speed conditions, tooth surface load, adhesive wear

CLC Number: 

  • TH117.1

Fig.1

Involute spur gear tooth surface load distribution"

Fig.2

Schematic diagram of meshing of worn gear teeth along line of action"

Fig.3

End view of gear contact equivalent model"

Fig.4

Relative sliding distance of gear pair"

Table 1

Geometry and working parameters of involute spur gear"

齿轮几何及工作参数数值
齿数zP/zg16/24
模数m/mm4.5
压力角α0/(°)20
齿宽b/mm14
弹性模量E/Pa2.1×1011
泊松比ν0.3
主动齿轮转速nP/(r?min-1)100
主动齿轮扭矩T/(N?m)302
表面粗糙度均方根Ra_rms/μm0.3

Fig.5

Comparison of wear depth at tooth root of pinion"

Fig.6

Load sharing factor of tooth surface"

Fig.7

Wear coefficient of the gear pair"

Fig.8

Accumulated wear of tooth surface"

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