【作者】 陈刚；

【导师】 吴波；

【作者基本信息】 武汉理工大学 ， 机械制造及其自动化， 2007， 硕士

【摘要】 本文围绕减速机械的维修方式决策和最佳预防维修决策的研究，提出了针对减速机械的维修策略，并根据N42蜗杆减速机的具体情况，确定其主要零部件的故障分布模型、维修方式和最佳预防维修周期。具体工作如下：1)首先从维修决策在我国制造业中的重要作用出发，介绍了可靠性维修的发展历程，系统的地分析了可靠性维修在国内外的研究现状和发展趋势，概括描述了目前维修决策在实际应用中暴露出的一系列问题，详细介绍了RCM的理论基础、原则、基本问题、关键技术和基本实施步骤，为本文针对减速机械的维修决策研究奠定理论基础。2)深入分析了N42蜗杆减速机主要部件的故障模式和影响，计算了各个零部件的致命度，建立了N42蜗杆减速机失效分析故障树。经过对N42蜗杆减速机的FMECA和FTA分析，构建了该减速机的可靠性模型和维修性模型。3)从可靠性、维修性和经济性三个方面来考虑N42蜗杆减速机中蜗轮蜗杆的维修方式，利用层次分析法对其详细的计算，决策出蜗轮蜗杆的主要维修方式。然后随机给出一组蜗轮蜗杆的故障数据，利用数理统计方法对其进行研究，确定蜗轮蜗杆的故障分布规律。最后按照有效度最大计算预防性维修周期的计算模型，对蜗轮蜗杆的维修周期进行决策。4)开发了减速机维修决策支持系统，该系统能够完成减速机械的基础信息管理，能够根据用户选择的影响因素确定减速机械的维修方式，根据用户选择的维修周期决策模型计算减速机械零部件的最佳预防维修周期。更多还原

【Abstract】 The paper revolves the research of the maintenance way decision and the best preventive maintenance decision of the reducer, proposes maintenance strategy aimed at the reducer, and according to special details of the N42 worm reducer, determines failure distribution model, maintenance way and the best preventive maintenance period of its main parts. The concrete works of the paper are summarized as follows:1) Beginning from the vital effect of maintenance decision in the manufacturing industry of our country, introduced the development course of the reliability maintenance, systematically analyzed research present situation and the development tendency of reliability maintenance in the domestic and foreign, synoptically described a series of problems at present to maintenance decision which exposed in the practical application, detailed introduced the theoretic, the principle, the basic question, the essential technology and the basic implementation step of RCM, established theoretic foundation for the maintenance decision research of the reducer.2) For the N42 worm reducer , analyzed deeply failure model and effect of its main parts, calculated the criticality of each part, established the invalidation analysis failure tree of N42 worm reducer, constructed reliability model and maintenance model from FMECA and the FTA analysis to N42 worm reducer.3) From the reliability, maintenance and economy three aspects to considered maintenance way of the worm in the N42 worm reducer, using Analytic Hierarchy Process to calculate in detail, decided main maintenance way of the worm. Then randomly produces a group of failure data of the worm, using the mathematical statistic method to research it, made sure the distributed law of the worm. Finally deferred to the biggest availability to calculate the preventive maintenance cycle, and carried on the maintenance cycle decision to the worm.4) Developed the reducer maintenance decision support system, this system can complete the reducer the basic information management, and decide the maintenance way of the reducer according to the influence factor user chooses, and calculate the best preventive maintenance period of reducer parts according to maintenance cycle decision model user chooses.更多还原