Investigation and modelling of the operational behaviour of tapered roller bearings at high speeds

圆锥滚子轴承高速运行行为的研究和建模

• 批准号: 253855621
• 负责人: Professor Dr.-Ing. Christian Brecher
• 金额: --
• 依托单位: Forschungsbereich Werkzeugmaschinen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/253855621?language=en
• 关键词: Investigation; modelling; operational; behaviour; tapered

Despite their high load rating and stiffness compared to spindle bearings, the usage of tapered roller bearings in machine tool main spindles for heavy roughing and HPC operations is not very common. This is mainly due to their low speed rating and the limited knowledge about their high speed operating behaviour.This research project pursues two major objectives: First, algorithms to describe the high speed operating behaviour of tapered roller bearings are to be developed. Generally, modelling the rolling and sliding contacts inside the bearing forms the basis for these calculations. In detail, special emphasis has to be put on the tribologically crucial, non-Hertzian roller-rib contact. Besides describing the force, speed and temperature dependent load-displacement behaviour, these models shall form the basis for calculating the bearing friction. Analogy experiments to further analyse the load, lubrication and friction conditions in the roller-rib contact shall be carried out to support the modelling.Secondly, test rig experiments with real bearings are used to verify the calculations. Additionally, these tests are designed to prove that the new algorithms allow for the development of tapered roller bearings with considerably increased speed ratings.The methods developed in this project can form the basis for more advanced descriptions of the operating behaviour of tapered roller bearings. Additionally they will allow for the specific optimisation of such bearings for the application in new types of machine tool main spindles and other applications like high speed gears.

尽管与主轴轴承相比，圆锥滚子轴承具有高负载额定值和刚度，但在重型粗加工和HPC操作的机床主轴中使用圆锥滚子轴承并不常见。这主要是由于他们的低速度额定和有限的知识，他们的高速运行行为。该研究项目有两个主要目标：首先，要开发描述圆锥滚子轴承高速运行行为的算法。一般来说，模拟轴承内部的滚动和滑动接触形成了这些计算的基础。详细地说，必须特别强调摩擦学上至关重要的非赫兹辊-罗纹接触。除了描述力、速度和温度相关的载荷-位移行为外，这些模型应构成计算轴承摩擦的基础。为了支持建模，需要进行类比实验，进一步分析滚子-肋接触时的载荷、润滑和摩擦条件。其次，利用实际轴承的试验台实验验证了计算结果。此外，这些测试旨在证明新算法允许开发具有显着提高额定速度的圆锥滚子轴承。在这个项目中开发的方法可以形成对圆锥滚子轴承的操作行为进行更高级描述的基础。此外，它们将允许在新型机床主轴和高速齿轮等其他应用中对此类轴承进行特定优化。