废旧机床可再制造质量评估与决策研究

发布时间：2018-03-20 18:49

本文选题：废旧机床　切入点：再制造　出处：《沈阳工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：我国拥有世界最多的机床,机床加工性能和信息化水平比较落后,未来将有一大批机床将因技术寿命或使用寿命终结而报废。对废旧机床实施再制造可实现设备材料资源循环利用、提升机床能效,符合可持续发展和绿色制造要求。由于废旧机床本身质量、使用工况、零部件剩余寿命等的不确定性和随机性,导致废旧机床可再制造质量评估困难,从而无法保证废旧机床再制造质量。本文在国家自然科学基金的资助下,从废旧机床整机可再制造质量属性评估与废旧零部件可再制造质量属性决策两个方面进行研究,提出可再制造质量评估方法和质量决策模型。主要研究内容如下:(1)根据对某机床集团再制造事业部的废旧机床再制造过程的调研,深入分析废旧机床的再制造过程,结合朱兰质量模型,提出废旧机床再制造质量模型,进而确定影响再制造机床质量的主要因素。(2)针对再制造机床质量影响因素,构建涵盖技术性、经济性、绿色性和综合性能提升四个方面的废旧机床整机可再制造质量评估体系,为系统、全面的评估废旧机床整机可再制造质量属性奠定基础。(3)针对废旧机床可再制造质量评估体系的多层次、多因素相互联系又相互制约,而且具有明显的不确定性、模糊性,提出基于G1与模糊综合相结合的废旧机床可再制造质量评价法,解决传统评价方法主观性强、一致性检验导致效率低等问题。(4)针对废旧零部件原始质量、使用工况的不确定性,划分废旧机床零件可再制造质量属性(直接重用、可修复、可再制造、报废处理),引入可拓理论论域划分原理,并结合可拓综合评价方法,实现废旧零部件可再制造质量属性的准确决策。
[Abstract]:China has the largest number of machine tools in the world, and its processing performance and information level are relatively backward. In the future, a large number of machine tools will be scrapped because of the end of their technical life or service life. Meet the requirements of sustainable development and green manufacturing. Due to the uncertainty and randomness of the quality of waste machine tools themselves, operating conditions, spare parts remaining life and so on, it is difficult to evaluate the remanufacturing quality of waste machine tools. Therefore, the remanufacturing quality of waste machine tools can not be guaranteed. In this paper, with the aid of the National Natural Science Foundation, the evaluation of the remanufacturing quality attribute of the whole machine tool and the decision making of the remanufacturing quality attribute of the waste parts are studied. Put forward the remanufacturing quality evaluation method and quality decision model. The main research contents are as follows: 1) based on the investigation of the remanufacturing process of the waste machine tool of a certain machine tool group, the remanufacturing process of the waste machine tool is deeply analyzed. Combining with Julan quality model, the paper puts forward the remanufacturing quality model of waste and old machine tools, and then determines the main factors that affect the quality of remanufacturing machine tools. Green and comprehensive performance enhancement four aspects of the waste machine tool remanufacturing quality assessment system for the system, A comprehensive evaluation of the remanufacturing quality attributes of waste machine tools lays the foundation for the multi-level evaluation system of the remanufacturing quality of waste machine tools. The multi-factors are interrelated and mutually restricted, and they have obvious uncertainty and fuzziness. A remanufacturing quality evaluation method for waste machine tools based on G1 and fuzzy synthesis is proposed to solve the problems of high subjectivity of traditional evaluation methods and low efficiency caused by consistency inspection. The attributes of remanufacturing quality (direct reuse, repairable, remanufacturing, scrap disposal) are divided. The theory of extension theory is introduced, and the extension comprehensive evaluation method is combined. To realize the accurate decision of remanufacturing quality attribute of waste parts.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG502

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