LY联合收割机装配线平衡改善研究

发布时间：2018-11-05 10:38

【摘要】："中国制造2025"战略的提出,使得农业机械装备行业迎来了政策利好。作为农业大国,农机装备的普遍应用是农业发展的重要保障。LY公司是一家新兴农业机械装备制造企业,其产品联合收割机用途广泛、质量稳定。但随着企业自身的发展和农机装备市场的升温,现行的生产装配模式已经不能满足未来订单的需求,该公司生产装配线方面的矛盾较为突出,各工位的工作量和工作时间有较大差异,空闲时间较长、生产环节衔接配合不合理,总体装配线平衡率较低。因此,进行生产线平衡的改善是其现阶段发展的主要目标。本文将运用现有的装配线平衡改善理论和工业工程的基本方法,对LY公司联合收割机装配线进行优化,使其达到较高的装配平衡率。本文首先介绍了工业工程方法在改善装配线平衡方面的可行性,概述了国内外对装配线平衡改善研究的方法和成果,确定了本文的研究内容、研究方法与技术框架。在此基础上介绍了装配线平衡问题研究中涉及的基础理论和改善前后的评价指标。随后着重介绍了本文将要运用的程序分析法、动作分析法、作业测定法,为改善装配线平衡的实证研究打下了的理论基础。第三章是对LY公司的现状分析,研究了产品装配流程中存在的问题,包括脱粒机架总成装配时间长,不能及时供应装配线生产;各工位生产节拍差距较大,空闲时间过长,工序安排不合理;物料领用与仓储不合理等问题。第四章着重对存在的问题进行研究与分析。首先将方法研究与作业测定技术相结合,减少了操作流程,精简了不合理装配动作,改进了装配模式;其次使用仿真优化软件proplanner对作业流程进行了重排,对工位进行合并;最后通过制定物料标签卡、改变作业场地仓库布置,优化了物料管理和生产物流的问题。文章最后运用装配平衡率、空闲时间、指数平滑和平衡延迟等指标对平衡改善后装配线进行评价。并对装配现场仓储布局优化前后做了数据分析对比,从上述两方面分析证明了此次研究的意义与成果。文章第五章对本次研究进行了总结,并提出了相应的意见与建议。
[Abstract]:"made in China 2025" strategy, the agricultural machinery and equipment industry ushered in a good policy. As a large agricultural country, the widespread application of agricultural machinery and equipment is an important guarantee for agricultural development. LY Company is a new manufacturing enterprise of agricultural machinery and equipment, and its product combine is widely used and stable in quality. However, with the development of the enterprise itself and the heating up of the agricultural machinery equipment market, the current production and assembly mode can no longer meet the demand of future orders, and the contradiction in the production and assembly line of the company is more prominent. The workload and working time of each work station are quite different, the idle time is longer, the production link is unreasonably connected with each other, and the overall balance rate of assembly line is low. Therefore, the improvement of production line balance is the main goal of its current development. Based on the existing theory of assembly line balance improvement and the basic methods of industrial engineering, this paper optimizes the assembly line of combine Harvester of LY Company and makes it achieve higher assembly balance rate. This paper first introduces the feasibility of industrial engineering method in improving assembly line balance, summarizes the research methods and achievements of assembly line balance improvement at home and abroad, and determines the research contents, research methods and technical framework of this paper. On this basis, the basic theory and evaluation index before and after improvement of assembly line balance are introduced. Then it introduces the program analysis method, action analysis method and job determination method which will be used in this paper, which lays a theoretical foundation for improving the balance of assembly line. The third chapter is the analysis of the current situation of LY company, studied the problems existing in the product assembly process, including the long assembly time of the thresher rack assembly, can not supply the assembly line production in time; The production rhythm of each work station is different, the idle time is too long, the working procedure arrangement is unreasonable, the material receiving and storing are unreasonable and so on. Chapter four focuses on the research and analysis of the existing problems. Firstly, the method research is combined with the job measurement technology, the operation flow is reduced, the unreasonable assembly action is simplified, and the assembly mode is improved. Secondly, the simulation optimization software proplanner is used to rearrange the work flow and merge the work stations. Finally, the material management and production logistics are optimized by making the material label card and changing the layout of the warehouse. Finally, the assembly line after the balance improvement is evaluated by using the assembly balance ratio, idle time, exponential smoothing and balance delay. The data analysis and comparison before and after the optimization of the assembly site storage layout prove the significance and achievement of this research from the above two aspects. The fifth chapter summarizes the research and puts forward some suggestions.
【学位授予单位】：南京农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S225

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