Study on Lubrication Characteristics of Novel Forced Wave Generator of Harmonic Drive without Flexible Bearing

被引：4
作者：
Jia, Hongli [1 ]
Xin, Hongbing [1 ]
机构：
[1] Beijing Technol & Business Univ, Sch Artificial Intelligence, Beijing 100048, Peoples R China
来源：
MATERIALS | 2022年 / 15卷 / 01期
关键词：
harmonic drive; flexible bearing; elliptical sliding bearing; hydrodynamic lubrication; computational fluid dynamics (CFD); DESIGN; PERFORMANCE; CAVITATION;
D O I：
10.3390/ma15010215
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In contrast to the conventional forced wave generator which consists of cam and flexible bearing in harmonic drive, the novel forced wave generator retains cam but cancels flexible bearing. In this article, the lubrication characteristics of the novel forced wave generator in harmonic drive is studied. First, an elliptical sliding bearing (ESB) model of simplified structure between the novel forced wave generator and the flex spline is established. Further, the computational fluid dynamics (CFD) method is employed to study the effect of some factors on the lubrication characteristics of the ESB model including elliptical gap ratio, width, and rotational speed. According to the analysis, the elliptical gap ratio has a great impact and its optimal value is 3, which is used in the design of the novel forced wave generator. Last, the practical design of the novel forced wave generator in harmonic drive is given, which can provide a basis for design and optimization of a forced wave generator without flexible bearing of the harmonic drive.
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页数：15
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