滚动直线导轨副可靠性与加速试验方法研究

发布时间：2018-05-30 17:11

本文选题：滚动直线导轨副 + 可靠性试验　；参考：《南京理工大学》2017年硕士论文

【摘要】：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)"中关于滚动直线导轨副可靠性的内容为背景,根据目前国内外的研究现状,结合加速试验方法,挖掘了导轨的可靠性指标,结合案例进行导轨的故障分类;设计了导轨可靠性与加速试验,选取定时截尾试验方式设计了导轨验收试验方案,最后对试验结果进行了分析和评估。建立了一套完整的适用于滚动直线导轨副可靠性与加速试验及其分析的流程,并验证了其可行性,为此类研究提供了依据。首先对试验的设备、应力条件、环境条件、维护条件等进行说明,制定试验剖面后,抽取导轨样件,进行导轨环境试验和筛选试验,为可靠性与加速试验的开展做好准备。总结归纳了一套针对滚动直线导轨副的可靠性与加速试验的方法,开展试验,制定了各类风险水平下的验收方案,选用定时截尾的试验方案进行研究。为提高滚动直线导轨副的可靠性水平提供了完整的试验方法。基于试验结果,对导轨平均故障间隔时间(MTBF)指标测定进行深入挖掘;对导轨质量水平进行无故障评判,分析了国内外导轨产品的可靠性水平差异;选取加速寿命试验案例,结合威布尔分布和图估计等方法进行评定,验证了估计方法的准确性。完善了试验评估体系,具有较强的工程意义。
[Abstract]:Based on the content of reliability of rolling linear guideway pair in the National Science and Technology Project "General Technology Research and capacity Building of functional component Test Test", according to the current research situation at home and abroad, combined with accelerated test method, the reliability of rolling linear guideway pair is considered as the background. The reliability index of the guide rail is excavated, the fault classification of the guide rail is carried out in combination with the case, the reliability and acceleration test of the guide rail is designed, and the acceptance test scheme of the guide rail is designed by selecting the method of the timing truncation test. Finally, the test results are analyzed and evaluated. A complete set of flow chart for reliability and acceleration test and analysis of rolling linear guideway pair is established, and its feasibility is verified, which provides a basis for this kind of research. First, the test equipment, stress condition, environment condition and maintenance condition are explained. After drawing up the test section, the guide rail sample is extracted, and the guide rail environmental test and screening test are carried out, so as to prepare for the development of reliability and acceleration test. This paper summarizes a set of methods of reliability and acceleration test for rolling linear guideway pairs, carries out tests, formulates acceptance schemes under various risk levels, and selects the test scheme of timing truncation to carry out research. A complete test method is provided for improving the reliability level of rolling linear guideway pair. Based on the test results, the average fault interval time (MTBF) index of guideway is deeply excavated, the quality level of guideway is judged without fault, and the reliability level difference between domestic and foreign guideway products is analyzed, and the accelerated life test case is selected. The accuracy of the estimation method is verified by combining Weibull distribution and graph estimation. The test evaluation system is improved and has strong engineering significance.
【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】：TH132

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