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Lifetime influence of cage pocket wear in transfer lubrication of solid-lubricated roller bearings

固体润滑滚子轴承传递润滑中保持架兜孔磨损对寿命的影响

基本信息

批准号：
335747258
负责人：
Professor Dr.-Ing. Bernd Sauer
金额：
--
依托单位：
Lehrstuhl für Maschinenelemente und Getriebetechnik (MEGT)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/335747258?language=en
关键词：
Lifetime influence cage pocket wear

项目摘要

Typically the main components of rolling bearings are the inner and outer race, the rolling element complement as well as the bearing cage ensuring the rolling element spacing. For various reasons the cage pockets may have different diameters. Recent research into solid-lubricated rolling bearings has shown major influence of cage pocket diameter variations on the frictional energy within the rolling element-cage-contact thus affecting the power dissipation of the overall bearing as well as cage dynamics. This project aims at analyzing the impact of cage pocket wear of solid-lubricated rolling bearings on the frictional energy within each individual cage pocket and the entire cage dynamic. Besides keeping the rolling elements apart, the cage of solid-lubricated rolling bearings provides additional lubrication. Lubricant transfer from the cage pocket to the rolling contact significantly affects the bearing life time. Thus reduced cage pocket wear just about the sufficient level for the required contact lubrication may lead to increased bearing life-time and utilization.Initially tribometer tests are used to achieve relevant friction as well as wear parameters of the used material pairings. Those results are the necessary basis for the simulation models enabling a detailed contact analysis within the bearing. In addition component tests are used to achieve experimental validation of the simulation models.

通常，滚动轴承的主要部件是内圈和外圈、滚动件组件以及确保滚动件间距的轴承保持架。由于各种原因，笼袋可能具有不同的直径。最近对固体润滑滚动轴承的研究表明，保持架口袋直径的变化对滚动元件-保持架接触内的摩擦能有很大影响，从而影响整个轴承的功率消耗和保持架动力学。本课题旨在分析固体润滑滚动轴承保持架磨损对各保持架内摩擦能及整个保持架动态性能的影响。除了使滚动元件分开外，固体润滑滚动轴承的保持架还提供额外的润滑。润滑剂从保持架口袋转移到滚动接触极大地影响轴承的使用寿命。因此，减少的保持架磨损刚好达到所需接触润滑所需的足够水平，可能会增加轴承的寿命和利用率。最初使用摩擦仪试验来获得所用材料配对的相关摩擦和磨损参数。这些结果是实现轴承内详细接触分析的仿真模型的必要基础。此外，还使用组件测试来实现对仿真模型的实验验证。