滚动功能部件可靠性试验、分析及评估方法研究

发布时间：2019-01-24 12:38

【摘要】：本课题以国家科技重大专项“高速、重载、精密滚珠丝杠与直线导轨”为背景,针对国产高端滚动功能部件在精度保持性和疲劳寿命可靠性方面与NSK、THK等同类产品的差距,对多种不同类型滚动功能部件的可靠性试验、分析及评估方法进行研究,为国产滚动功能部件的改进与提高提供检验手段与设计依据。对与滚动功能部件可靠性有关的指标、概念以及关键技术进行了分析总结,给出了滚动功能部件可靠性研究的路线。对滚珠丝杠副可靠性工程试验与分析方法进行了研究。提出了精密滚珠丝杠副恒定应力加速试验的方法,进行了可靠性工程试验,并对精度和摩擦力矩的变化情况、故障情况以及磨损寿命进行了分析研究；提出了高速滚珠丝杠副性能综合试验方法,采用此方法对性能指标进行了检测,同时对空心和实心高速滚珠丝杠副的各项性能指标进行了对比分析；提出了重载滚珠丝杠副恒定应力加速试验的方法,进行了可靠性工程试验,并对反向间隙、摩擦力矩以及疲劳寿命进行了分析研究。对滚动直线导轨副可靠性工程试验与分析方法进行了研究。提出了基于步进加载的重载滚动直线导轨副可靠性试验方法,进行了可靠性工程试验,并对精度和摩擦力变化情况、失效情况以及疲劳寿命进行了分析研究；提出了高速精密滚动直线导轨副可靠性试验方法并进行了试验,对其精度、摩擦力变化情况以及滚动直线导轨副寿命进行了分析研究。对滚动功能部件可靠性测定试验与评估方法进行了研究。针对滚动功能部件特点,提出了一种结合小子样试验与加速寿命试验的可靠性测定试验方法,并采用虚拟增广子样理论和超过概率权重矩法建立了精密滚珠丝杠副磨损寿命的三参数威布尔模型和重载滚动直线导轨副疲劳寿命的三参数威布尔模型。在此基础上,从进一步提高滚动功能部件可靠性出发,对滚动功能部件可靠性设计方法进行了研究,并对滚动功能部件可靠性管理的流程与措施进行了总结。
[Abstract]:Based on the national science and technology major project "high speed, heavy load, precision ball screw and linear guide rail", this paper aims at the gap between the precision retention and fatigue life reliability of domestic high-end rolling function components and NSK,THK and other similar products. The reliability test, analysis and evaluation methods of various kinds of rolling function components are studied, which provide the test means and design basis for improving and improving the rolling function components made in China. The indexes, concepts and key technologies related to the reliability of rolling functional components are analyzed and summarized, and the research route of reliability of rolling functional components is given. The reliability engineering test and analysis method of ball screw pair are studied. The method of accelerating the constant stress test of precision ball screw is put forward, the reliability engineering test is carried out, and the variation of precision and friction moment, failure and wear life are analyzed and studied. A comprehensive test method for the performance of high speed ball screw pair is put forward. The performance index is tested by this method, and the performance indexes of hollow and solid high speed ball screw pairs are compared and analyzed. The accelerated test method of constant stress of heavy-duty ball screw is put forward, the reliability engineering test is carried out, and the reverse clearance, friction moment and fatigue life are analyzed and studied. The reliability engineering test and analysis method of rolling linear guideway pair are studied. The reliability test method of heavy load rolling linear guideway pair based on step loading is put forward, and the reliability engineering test is carried out, and the variation of precision and friction force, failure situation and fatigue life are analyzed and studied. The reliability test method of high speed precision rolling linear guideway pair is put forward, and the precision, friction change and the life of rolling linear guide rail pair are analyzed and studied. The reliability test and evaluation method of rolling function parts are studied. According to the characteristics of rolling function parts, a reliability test method combining small sample test and accelerated life test is proposed. The three parameter Weibull model of the wear life of the precision ball screw pair and the three parameter Weibull model of fatigue life of the heavy load rolling linear guide rail pair are established by using the virtual augmented subsample theory and the method of excess probability weight moment. On this basis, the reliability design method of rolling functional components is studied in order to further improve the reliability of rolling functional components, and the process and measures of reliability management of rolling functional components are summarized.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133

【引证文献】