【作者】 姬永清；

【导师】 周燕飞；

【作者基本信息】 南京航空航天大学 ， 机械电子工程， 2005， 硕士

【摘要】 激烈的市场竞争和用户需求的多样化,使多品种、单件小批生产模式成为主流,这种生产模式下企业的产品种类多、批量小、生产重复度低、工艺过程经常变更、生产计划的稳定性较差,这就迫切需要一个能满足实际要求的生产计划与管理系统。本文首先分析了多品种单件小批生产的特点以及存在的问题,在对一些生产计划模式研究的基础上,提出了将 MRP 与 JIT 相结合的包括订单任务分解与车间作业计划的两层计划体系,分析了该生产模式的特点以及计划体系中各计划层次的内容,定义了系统功能模型。论文描述了在订单任务分解中 MRP 计划分解的方法,研究了能力平衡的措施,介绍了外协处理。在分析车间作业调度内容的基础上,提出了多品种单件小批生产模式下车间级作业调度与车间内作业分配相结合的分层调度模型,阐述了该调度方法。最后开发了生产计划与管理系统的相关模块,通过企业中的应用实施,验证了该方法的可行性。对在实施过程中遇到的问题,进行了分析,提出了解决方案。更多还原

【Abstract】 Fierce market competition and customers’ diversified requirements, make themulti-categories and small batch become the mainstream of the production mode. Inthese enterprises, products are always multiple with small batch, low repeat, lowstability of production planning and scheduling. Processes are often modified. Sothese enterprises need an applicable system to meet the requirements of practice. This paper has analyzed the characteristics and the existing problems of theproduction with multi-categories and small batch. On the basis of studying aboutsome production scheduling modes, a planning system combined by MRP and JITwith two layers of production plan is put forward including order tasks resolvingand workshop tasks planning. Its characteristics and how to plan and schedule arestudied, and the systematic function model is defined. The approach of MRPresolving the tasks is described, the way of capability balanced is studied and themanufacturing agency is introduced. On the basis of analysis of workshop planningand scheduling, the two layers of scheduling mode with the scheduling of workshopand scheduling in workshop is put forward and this method of scheduling isdescribed. At last, a production planning and management system is developed, andthe feasibility of this method is verified by the implement in an enterprise. Theproblems which appeared in the course of implement are analyzed, and the solutionsare put forward.更多还原