【作者】 刘俊良；

【导师】 管在林；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2007， 硕士

【摘要】 准时制生产和精益生产技术等先进的制造管理模式在大批量重复型生产环境中取得了巨大的成功,而在广大中小企业中的应用推广却面临相当的困难。为实现此类多品种小批量生产环境下的精益化改造,本文探索相应的混流生产新模式,并研究其基于约束理论的运作控制新机制。在研究分析传统理论的基础上深入研究了面向多品种小批量生产环境的混流生产运作控制新模式。该模式以零部件族为生产对象,分配一定的设备产能,在物理或逻辑上形成相应的混流路径;不同混流路径间允许资源设备的共享。同时,围绕由品种相对少、单品批量相对大的通用性零部件族和品种相对多、单品批量相对少的个性化定制零部件族,分别进行生产组织;既保证效率,又兼顾灵活性。针对多品种小批量混流生产模式下混流路径的运作控制特点,引入基于约束理论的运作控制机制,借以建立基于约束理论的混流生产模式新型运作控制框架。该框架借助基于约束理论的混流路径管理技术,可以简化和均衡工厂中的物料流,并使生产过程易于控制和管理。围绕上述新型生产组织与运作控制模式的实现,研究分析了包括混流路径规划、瓶颈识别和缓存大小设置与管理等在内的若干关键技术,在对相关技术方法进行综合集成的基础上充实了基于约束管理的多品种小批量混流生产运作控制技术框架。在上述研究基础上进行了新型生产运作控制模式的仿真研究,初步验证其在多品种小批量生产环境中的优势。并就如何对其进一步完善进行了展望。更多还原

【Abstract】 JIT and other existing lean techniques achieved great success in the mass and repetitive production environment; however, they are proven difficult to apply in most Small and Medium-Sized Enterprises (SMEs). In order to apply lean production to the high-mix and low volume environment, this paper explores a new flow manufacturing model and researches its operation and control mechanism base on TOC.The research goes deep into the traditional methods and theories in order to develop a new control mode of flow manufacturing which can adapt to high-mix and low volume environment. The mode’s objects focus on parts families according to which equipments are assigned and come into physical or logical flow path. But some equipment can be shared in different flow paths. Meanwhile the productions are organized individually according to the difference between commons and customizations. So both efficiency and flexibility are guaranteed.According to the traits of flow manufacturing in the high mix and low volume environment, the operation control mechanism of DBR is introduced to establish a new production framework based on the Theory of Constraints. The framework relies on the flow path management technology which can simplify and balance the material flow in plant, and make the control and management of the production process easy.Centered on the realization of new production model, this paper analyzes some steps and key techniques including division of the flow path, identification of bottlenecks, setting of buffer size and etc. The integration of related techniques enriches the operation control framework of flow manufacturing in high mix and low volume environment.Finally, a simulation study has been carried out and shows some advantages of this proposed new mode superior to some traditional ones. The paper also points out the problems and the direction of future research.更多还原