Optimal Pre-stressing the Surface of a Component by Superfinish Hard Turning for Maxium Fatigue Life

通过超精硬车削对部件表面施加最佳预应力，以实现最大疲劳寿命

• 批准号: 9713748
• 负责人: C. Richard Liu
• 金额: $ 30.69万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713748&HistoricalAwards=false
• 关键词: Optimal; Pre; stressing; Surface; Component

This research project is to study and optimize the fatigue life for surfaces machined by superfinish hard turning. This will be accomplished by: (1) modeling the relationship between machining conditions, tool wear, surface integrity, and fatigue life of the superfinish hard turned surface, and (2) developing a methodology enabling optimal pre-stressing, through the optimal residual stress distribution generated by the best cutting conditions for fatigue life. The research results could lead to the replacement of grinding and superfinishing by single-point machining, benefiting the manufacturing industries that make bearings, gears, cams, shafts, tools, dies, etc. The research is fundamental and could lead to a significant improvement in the fatigue life of superfinish hard turned surfaces. A major strength of the project is its strong industry participation and support.

本研究计画系针对超精硬态车削加工表面之疲劳寿命进行研究与最佳化。 这将通过以下方式实现：（1）对超精硬车削表面的加工条件、刀具磨损、表面完整性和疲劳寿命之间的关系进行建模，以及（2）开发一种方法，该方法通过由疲劳寿命的最佳切削条件产生的最佳残余应力分布来实现最佳预应力。 研究结果可能导致单点加工取代磨削和超精加工，使轴承，齿轮，凸轮，轴，工具，模具等制造业受益。 这项研究是基础性的，并可能导致超精硬车削表面的疲劳寿命显着改善。 该项目的一个主要优势是其强大的行业参与和支持。