轴向间隙对圆锥滚子轴承表面引发剥落的影响

IF 2.2 3区 工程技术 Q2 ENGINEERING, MECHANICAL
Ken Takahashi, Takafumi Nagatomo
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引用次数: 1

摘要

滚动轴承疲劳寿命的计算方法以Lundberg和Palmgren理论为基础。额定寿命由轴承的额定动载荷与等效动载荷的比值确定。然而,在实际应用中,剥落损坏可能发生在该额定寿命之前。例如,由于润滑剂中的污染,可能会发生表面引发的剥落。此外,轴承内部间隙的差异也被认为会影响表面引发的剥落的发生。本研究旨在研究不同内部间隙对圆锥滚子轴承表面引发剥落的影响。首先,在不同于标准条件的几个轴向间隙下,对带有凹陷滚道的组合圆锥滚子轴承进行了旋转试验。其次,对试验前后轴承的表面轮廓进行了比较,以研究剥落面积的分布与轴向间隙之间的关系。此外,通过旋转试验结果之间的比较,阐明了轴向间隙对表面起始剥落寿命的影响。最后,对理论寿命和实验寿命进行了比较。结果发现,当轴向间隙过大时,剥落的分布偏向外滚道的大直径侧。此外,已经证明轴承寿命在很大程度上受到轴向间隙的影响,并且轴承寿命随着轴向间隙的增加而缩短。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Axial Clearance on Surface Initiated Flaking in Tapered Roller Bearings
The calculating method for fatigue life of rolling bearings is based on the theory of Lundberg and Palmgren. The rated life is determined from the ratio of the dynamic load rating of the bearing to the dynamic equivalent load. However, in actual applications, flaking damage may occur earlier than this rated life. For example, surface initiated flaking may occur due to contamination in the lubricant. In addition, differences in the internal clearance of bearings are also thought to influence the occurrence of surface initiated flaking. This study aims to investigate the effect of different internal clearance on surface initiated flaking in tapered roller bearings. Firstly, rotating tests were conducted on combination tapered roller bearings with dented raceways under several axial clearances different from the standard condition. Secondly, the surface profiles of the bearings before and after the tests were compared to investigate the relationship between the distribution of flaking area and the axial clearance. Furthermore, the effect of axial clearance on the surface initiated flaking life was clarified from the comparison between the results of the rotating tests. Finally, the theoretical and experimental lives were compared. As a result, it has been found that when the axial clearance is excessively large, the distribution of flaking is biased toward the large diameter side of the outer raceway. In addition, it has been demonstrated that the bearing life is substantially affected by the axial clearance, and that the bearing life shortens as the axial clearance increases.
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来源期刊
Journal of Tribology-transactions of The Asme
Journal of Tribology-transactions of The Asme 工程技术-工程:机械
CiteScore
4.20
自引率
12.00%
发文量
117
审稿时长
4.1 months
期刊介绍: The Journal of Tribology publishes over 100 outstanding technical articles of permanent interest to the tribology community annually and attracts articles by tribologists from around the world. The journal features a mix of experimental, numerical, and theoretical articles dealing with all aspects of the field. In addition to being of interest to engineers and other scientists doing research in the field, the Journal is also of great importance to engineers who design or use mechanical components such as bearings, gears, seals, magnetic recording heads and disks, or prosthetic joints, or who are involved with manufacturing processes. Scope: Friction and wear; Fluid film lubrication; Elastohydrodynamic lubrication; Surface properties and characterization; Contact mechanics; Magnetic recordings; Tribological systems; Seals; Bearing design and technology; Gears; Metalworking; Lubricants; Artificial joints
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