Aimed setting of coefficient of static friction via finishing by turn-milling

通过车铣精加工有针对性地设定静摩擦系数

• 批准号: 411688125
• 负责人: Professor Dr.-Ing. Erhard Leidich
• 金额: --
• 依托单位: Professur Konstruktionslehre
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/411688125?language=en
• 关键词: Aimed; setting; coefficient; static; friction

Increasing power densities in current technical systems as well as lightweight requirements demand the transmission of higher specific forces or torques respectively. One aim of the project is to generate adequate surface properties during the finishing process without additional coating or microstructuring processes. Several publications and own investigations show, that a selective microstructuring of the surface can increase the coefficient of static friction significantly.Within the project, correlations between the process parameters, the substrate micro topography and the coefficient of static friction shall be analyzed and understood. A time dynamic simulation tool should be developed to determine the influence of process parameters and tool geometry on the micro topography. The experimental design will be done by means of methods of the statistical design of experiments (DoE). Furthermore, the influence of tribological parameters such as the contact pressure, the mating materials, the lubrication and the properties of the counterpart on the coefficient of static friction shall be analyzed and understood. Analyses of the tool wear should provide information on the occurring wear types and their influence on the surface topography and the coefficient of static friction. Based on the findings, surfaces with a high coefficient of static friction can be manufactured by turn-milling.

在当前的技术系统中，不断增加的功率密度以及轻量化要求分别要求更高的比力或扭矩的传输。该项目的一个目标是在精加工过程中产生足够的表面性能，而无需额外的涂层或微结构处理。一些出版物和自己的研究表明，选择性的表面微结构可以显着增加静摩擦系数。在项目中，需要分析和了解工艺参数、基材微观形貌和静摩擦系数之间的相关性。为了确定工艺参数和刀具几何形状对微形貌的影响，需要开发一种时间动态仿真工具。实验设计将采用实验统计设计（DoE）的方法。此外，还应分析和了解接触压力、配合材料、润滑和对应物性能等摩擦学参数对静摩擦系数的影响。对刀具磨损的分析应提供有关发生的磨损类型及其对表面形貌和静摩擦系数的影响的信息。基于研究结果，车削可以制造出具有高静摩擦系数的表面。