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.

该研究项目是研究和优化超级硬盘加工的表面疲劳寿命。 这将通过：（1）建模超级硬盘表面的加工条件，工具磨损，表面完整性和疲劳寿命之间的关系，以及（2）开发一种方法，通过最佳的疲劳寿命，通过最佳切割条件产生的最佳残留应力分布，从而实现最佳的预压力。 该研究结果可能导致通过单点加工替换磨削和超级磨削，从而使制造轴承，齿轮，凸轮，轴，轴，工具，模具等的制造业受益。这项研究是基本的，可以显着改善超级固定硬盘表面的疲劳生活。 该项目的主要优势是其强大的行业参与和支持。