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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
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No.9 Gaoguannong,Daxue Road,Hangzhou,China
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meem_contribute@163.com
Abstract: Aiming at the problem of the influence of pocket geometric parameters of cylindrical roller bearing with V-shaped pocket on the frictional heat generation characteristics, the influence law of the wall inclination angle of different V-shaped pocket on the frictional heat generation characteristics of the bearing was studied. Firstly, the bearing dynamics model and frictional power loss model were established based on the multi-body dynamics theory and the tribology principle. Then, the influence of different geometric parameters of the V-shaped pocket on the frictional heat generation was analyzed, and the geometric parameters of the V-shaped pocket were optimized by the orthogonal test method. Finally, the frictional heat generation characteristics between bearing components were analyzed based on the optimized V-shaped pocket. The research results indicate that the geometric parameters of the V-shaped pocket have a significant impact on the pocket frictional heat generation. Under the same operating condition, the maximum difference in frictional power loss of the pocket with different wall inclination angles reaches 736.2 W. When the inclination angle of the pocket wall is α=40°、β=50°, the pocket frictional heat generation can be reduced effectively. In addition, the frictional heat generation of the pocket keeps increasing with the increase of rotation speed, but the increase of radial load gradually stabilizes the pocket frictional heat generation. Comparing with the optimized V-shaped pocket cylindrical roller bearing and the ordinary circular pocket bearing, the pocket frictional heat generation and total frictional heat generation of the optimized bearing under different operating conditions are lower than that of the ordinary bearing, and the contact force between the roller and pocket of the optimized bearing is also lower than that of the ordinary bearing.
Key words: rolling bearing; roller bearing; wall inclination angle of V-shaped pocket; dynamics model; frictional power loss model; geometric parameter optimization; frictional heat generation
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