单元生产下装配型企业期量标准制定问题研究
毕业论文关键词：单元；期量标准；批量；生产提前期
Research on the Standard of Scheduled Time and Quantity Based on Cell Production
Abstract With the development of the economy, most orders of assembly enterprise appear the trend of multi-variety and small-batch, which forces them to improve the flexibility and speed of fast responding. This paper is set on an assembly enterprise and investigates the sales volume to transform the traditional flow lines to the cell production and sets about the improvement and simulation of production site in the laboratory. One of the core problems of cell production is the study of scheduled time and quantity, the key problem of which is batch and lead time. Therefore, this paper applies BP neural net to predict the demand of short period in future, which is superior to other methods. Otherwise, the standard cycle time is established with the help of double-e software in order to determine the standard of time. Based on predicted demand and standard cycle time, the paper applies the optimal production technology to decide the number of production batch, the transferring batch also being confirmed At the same time, the model of shortest lead time is set up under the background of one piece flow. With the aid of scheduled time and quantity, the assembly time will be reduced remarkably and dead-time will be shortened, which will lead to production balance.
Key words： Cell production, Standard of scheduled time and quantity, Batch, Lead- time
目录
1.绪论 1
1.1 问题提出的背景及意义. 1
1.1.1问题提出及背景 . 1
1.1.2意义 . 1
1.2 研究综述. 2
1.3 研究内容和技术路线. 3
1.3.1研究内容 . 3
1.3.2技术路线图 . 4
1.4 本章小结. 4
2.相关理论基础 5
2.1 单元生产. 5
2.2 期量标准. 5
2.2.1批量和生产间隔期 . 6
2.2.2生产提前期 . 9
2.3 标准作业 10
2.3.1标准作业介绍 10
2.3.2达宝易软件 10
2.4 神经网络 11
2.4.1神经网络的结构 11
2.4.2 BP神经网络的算法实现 . 12
3.企业计划现状及问题分析 13
3.1 实际问题 14