径向加载圆锥滚子轴承在高转速下的润滑

Q3 Engineering
Marcus Gärtner, C. Brecher, S. Neus, C. Recker, M. Franken, Thomas Engelmann, I. Wagler
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引用次数: 0

摘要

为了提高加工过程中的制造精度,必须提高机床主轴的刚度。一种方法是用圆锥滚子轴承代替传统使用的主轴轴承,以实现更高的刚度和承载能力。然而,这种轴承类型的速度能力是有限的,尽管可以通过充分的润滑来增强,特别是在临界负载的肋辊接触中。本文的目的是验证润滑剂对径向加载圆锥滚子轴承速度性能的影响。在各种速度阶跃运行中,基于试验台中的外圈温度和振动水平,评估了轴承在油气和油脂润滑下的运行行为。采用油气润滑,可以实现高达900000 mm/min的速度参数,而采用油脂润滑,可以达到540000 mm/min的转速参数。相比之下,主轴轴承的设置可以在润滑脂和油气润滑的情况下实现900000 mm/min的最高研究速度参数。对于润滑脂润滑的滚珠轴承,随着径向载荷的变化,温度波动会显著增加。在油气润滑的情况下,稳态温度随着油粘度的增加而提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lubrication of Radial Loaded Tapered Roller Bearings Under High Rotational Speeds
To improve the manufacturing accuracy in the machining process, the stiffness of the machine tool spindle must be increased. One approach is to replace the conventionally used spindle bearings by tapered roller bearings to achieve a higher stiffness and load carrying capacity. However, the speed capability of this bearing type is limited, though can be enhanced by sufficient lubrication, especially in the critically loaded rib-roller-contact. The objective of this paper is to validate the lubricant influence on the speed capability of radially loaded tapered roller bearings. In various speed step runs, the operating behavior of the bearings under oil-air and grease lubrication was evaluated based on the outer ring temperature and the vibration level in the test rig. With oil-air lubrication, a speed parameter up to 900,000 mm/min could be achieved, whereas with grease lubrication, a speed parameter of 540,000 mm/min could be reached. In comparison, the setup with spindle bearings can achieve the highest investigated speed parameter of 900,000 mm/min with both grease and oil-air lubrication. For grease lubricated ball bearings, significantly higher temperature fluctuations are present with variation of the radial load. In the case of oil-air lubrication, the steady-state temperature improved with increasing oil viscosity.
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来源期刊
Tribology in Industry
Tribology in Industry Engineering-Mechanical Engineering
CiteScore
2.80
自引率
0.00%
发文量
47
审稿时长
8 weeks
期刊介绍: he aim of Tribology in Industry journal is to publish quality experimental and theoretical research papers in fields of the science of friction, wear and lubrication and any closely related fields. The scope includes all aspects of materials science, surface science, applied physics and mechanical engineering which relate directly to the subjects of wear and friction. Topical areas include, but are not limited to: Friction, Wear, Lubricants, Surface characterization, Surface engineering, Nanotribology, Contact mechanics, Coatings, Alloys, Composites, Tribological design, Biotribology, Green Tribology.
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