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Tribological behaviour of turn-milled surface structures for high loaded lubricated rolling contacts

高负载润滑滚动接触面车铣表面结构的摩擦学行为

基本信息

批准号：
266371735
负责人：
Professor Dr.-Ing. Dirk Bartel, since 11/2016
金额：
--
依托单位：
Fachgebiet Fertigungsverfahren
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/266371735?language=en
关键词：
Tribological behaviour turn milled surface

项目摘要

Contrary to rolling-element bearings with cage in full complement rolling-element bearings the inappropriate kinematic conditions between the rolling elements (200% slippage) cause that no lubricating films between the rolling elements are generated. Consequently high wear occurs at the rolling elements, reducing reliability and lifetime of the bearings. The development of functional surfaces, providing high wear resistance and low friction under adverse lubricating conditions, offers potential for improvement. Modern manufacturing methods like turn-milling are suitable for optimizing the surfaces in contact. The aim of the research project is to create a suitable turn-milled microstructure on the highly loaded rolling element surfaces. For this purpose the process parameters during turn-milling in correlation with friction and wear behaviour determined in a two-roller test rig are systematically investigated. The fundamental insights will provide conclusions for tribological adversely loaded rolling contacts and generate new possibilities for finishing functional surfaces in highly stressed lubricated contacts exposed by slippage, like gearings, ball-, spherical roller- and axial cylinder roller bearings, cam-tappet-pairing and ball-screw-spindles. All of this can improve significantly the economic and ecological efficiency in manufacturing and driving such machine components. The close cooperation of tribology and manufacturing technology is essential for achieving the objectives of this research project.

与满载滚动件轴承中带有保持架的滚动件轴承相反，滚动件之间不适当的运动条件(200%滑移率)导致滚动件之间不会产生润滑膜。因此，滚动元件磨损严重，降低了轴承的可靠性和寿命。功能性表面的开发，在不利的润滑条件下提供高耐磨性和低摩擦，提供了改进的潜力。像车削这样的现代制造方法适用于优化接触的表面。该研究项目的目的是在高载荷的滚动元件表面上创建合适的车削组织。为此，系统地研究了车削过程中的工艺参数与在双辊试验台上测定的摩擦磨损性能之间的关系。这些基本见解将为摩擦学反向加载的滚动接触提供结论，并为在滑动暴露的高应力润滑接触中精加工功能表面带来新的可能性，如齿轮、滚珠、球面滚子和轴向圆柱滚子轴承、凸轮挺柱配对和滚珠丝杠主轴。所有这些都可以显著提高制造和驱动此类机器部件的经济和生态效率。摩擦学和制造技术的密切合作对于实现本研究项目的目标至关重要。