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Technical Brief

Gear Reverse-Order Meshing—Phenomenon, Analysis, and Application

[+] Author and Article Information
Shi Zhaoyao

Beijing Engineering Research Center of Precision
Measurement Technology and Instruments,
Beijing University of Technology,
Beijing 100124, China
e-mail: shizhaoyao@bjut.edu.cn

Shu Zanhui

Beijing Engineering Research Center of Precision
Measurement Technology and Instruments,
Beijing University of Technology,
Beijing 100124, China
e-mail: shuzanhui2006@163.com

Yu Bo

Beijing Engineering Research Center of Precision
Measurement Technology and Instruments,
Beijing University of Technology,
Beijing 100124, China
e-mail: dr_yubo@126.com

Wang Tao

Beijing Engineering Research Center of Precision
Measurement Technology and Instruments,
Beijing University of Technology,
Beijing 100124, China
e-mail: wangtao8979@163.com

Wang Xiaoyi

Beijing Engineering Research Center of Precision
Measurement Technology and Instruments,
Beijing University of Technology,
Beijing 100124, China
e-mail: wxy2.0@163.com

1Corresponding author.

Contributed by the Power Transmission and Gearing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received December 11, 2016; final manuscript received July 18, 2017; published online October 3, 2017. Assoc. Editor: Qi Fan.

J. Mech. Des 139(12), 124502 (Oct 03, 2017) (8 pages) Paper No: MD-16-1821; doi: 10.1115/1.4037799 History: Received December 11, 2016; Revised July 18, 2017

The gear drive is theoretically a normal-order meshing process to transmit movement and power. When temperature variation, misalignment, manufacture error, or deformation occurs, the normal-order meshing will be destroyed. Under certain conditions, the contact point moves in the opposite direction to the normal order on the surface of the tooth. This process is called gear reverse-order meshing. The gear reverse-order meshing will lead to gear impact and generate noise during the transmission. In the study, with gear pairs with base pitch deviation as the study object, we further studied this process and expanded the application scope of the process to kinematics and dynamics. The transmission error of the gear reverse-order meshing process was deduced. Both the speed error and acceleration error were obtained. Based on the curves of these three variables, the influence of gear reverse-order meshing on gear transmission characteristic was analyzed to explore the causes for the meshing impact phenomenon. Although the gear reverse-order meshing process has some disadvantages, it could also be applied in some fields. Due to the feature of gear reverse-order meshing, it is applied to gear integrated error (GIE) measuring technique and tooth-skipped gear honing process effectively.

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Copyright © 2017 by ASME
Topics: Gears , Errors
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References

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Figures

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Fig. 1

Gear meshing process with pitch deviation: (a) positive pitch deviation and (b) negative pitch deviation

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Fig. 2

Reverse-order meshing during the engaging-in process: (a) normal-order meshing and (b) reverse-order meshing

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Fig. 3

Reverse-order meshing during the engaging-out process: (a) normal-order meshing and (b) reverse-order meshing

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Fig. 4

Transmission error curves of gear with positive base pitch deviation

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Fig. 5

Transmission error curves of gear with negative base pitch deviation

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Fig. 6

Curves of fφ2(φ), Δω, and Δε when engaging-in impact happens

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Fig. 7

Relationship between Δfpb and δω2: Z1=55 Z2=25 m=2

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Fig. 8

Curves of fφ2(φ), Δω, and Δε when engaging-out impact happens

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Fig. 9

Relationship between Δfpb and δω2#: Z1=55 Z2=25 m=2

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Fig. 10

Integrated error unit curves

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Fig. 11

Trace of the contact points during tooth-skipped gear honing

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