滚珠丝杠副精度保持性及加速试验方法研究

发布时间：2018-06-08 10:17

本文选题：滚珠丝杠副 + 精度保持性　；参考：《南京理工大学》2017年硕士论文

【摘要】：论文以国家科技重大专项"功能部件测试试验共性技术研究与能力建设(2016ZX04004007)"为背景,基于滚珠丝杠副精度保持性试验台,对滚珠丝杠副的精度保持性进行了研究和评估,并研究加速试验方法提高试验效率。针对国内滚珠丝杠副精度保持性及试验研究相对落后的现状,基于可靠性研究的理论,对滚珠丝杠副的精度保持性进行了分析。根据精度保持性的数学模型进行仿真计算,研究不同试验应力对精度的影响并确定试验应力及边界条件。研究精度保持性评估方法和加速试验方法。对精度保持性试验前的环境应力筛选试验进行方案设计,确定筛选方法,制定筛选流程,设计筛选应力条件及应力施加方法,对滚珠丝杠副样件进行了筛选试验,发现和排除了早期故障。基于滚珠丝杠副精度保持性试验台设计精度保持性试验方案和流程,并设计精度和预紧力在线测量方法;采用恒定应力加速方法进行了精度保持性加速试验,分析试验数据并研究威布尔分布下的精度保持性评估方法,对分布参数和不同可靠度的精度保持性时间进行分析。设计基于步进应力加速的A+A加速试验方案和数据评估方法,适用于工厂对滚珠丝杠副产品的精度保持性进行快速测定与分析。对精度保持性验收试验方法进行分析,选取合适的抽样方案和统计试验方案,运用已有的精度保持性与加速试验方法,根据生产方和接收方能够承担的验收风险等参数,对具体统计方案的案例进行分析,选择合理的验收方案号并对接收、拒收判决进行分析,并根据接收、拒收的判据对滚珠丝杠副的精度保持性进行估计。
[Abstract]:Based on the national science and technology major project "Research and capacity building of functional component test commonality technology", based on the precision retention test platform of ball screw, the paper studies and evaluates the accuracy retention of ball screw pair. The accelerated test method is also studied to improve the test efficiency. Based on the theory of reliability research, this paper analyzes the precision retention of ball screw pairs in accordance with the relative backward status of domestic ball screw pairs' precision retention and experimental research. According to the mathematical model of precision retention, the influence of different test stress on precision is studied and the test stress and boundary conditions are determined. Research accuracy retention evaluation method and accelerated test method. The environmental stress screening test before precision retention test was designed, the screening method was determined, the screening process was established, the screening stress condition and the stress application method were designed, and the screening test was carried out on the ball screw pair sample. Early failures were detected and eliminated. Based on the design scheme and flow chart of precision retention test rig for ball screw pair, the on-line measurement method of precision and preload is designed, and the precision retention test is carried out by using constant stress acceleration method. The test data are analyzed and the precision retention evaluation method under Weibull distribution is studied. The distribution parameters and the accuracy retention time of different reliability are analyzed. The A A accelerated test scheme and data evaluation method based on step stress acceleration are designed, which is suitable for the rapid measurement and analysis of the precision retention of the ball screw by-products in the factory. This paper analyzes the acceptance test method of precision retention, selects suitable sampling scheme and statistical test scheme, and applies the existing precision retention and acceleration test methods, according to the acceptance risk that the producer and receiver can bear, and so on. This paper analyzes the case of the specific statistical scheme, selects the reasonable acceptance scheme number, and analyzes the decision of receiving and rejecting, and estimates the accuracy retention of ball screw pair according to the criterion of receiving and rejecting.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG502.3

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