摘要：对于一个企业而言，在制品管理的优良极为重要，在制品各种批量设置合理与否决定了一个企业库存费用、生产批量、加工批量、甚至调度费用的大小和整个生产运作总体效率。在制品批量确定影响着生产系统的整体效率和流畅性，如过高的在制品加工批量设置，会导致库存费用增加，资金占用增多等问题。在制品批量设置不合理也有可能会导致在制品跟不上下一工序的进行，产生“饥饿”效应，从而使得下一工序的生产机器不得不等待，这就降低了机器的利用率。同时也增加了整改生产流程的总时间，进而降低了生产效率。本论文就从在制品批量确定的方向出发，结合笔者所实习的“四洋柴油机厂”中所存在的在制品批量确定设置问题进行研究，结合TOC约束理论，找出生产系统的瓶颈工序，利用DBR缓冲设置等理论方法，运用推拉结合模式，来使得在制品批量设定达到一个合理的数量，进而通过与该工厂现有相关总费用状况的对比，得出该在制品批量确定管理的方法的可行性。

关键词：在制品批量确定；TOC约束理论；瓶颈；推拉结合

The determination of Si Yang Diesel engine factory's invent- ory batches on the TOC push-pull model

Abstract：For an enterprise, the excellent inventory management is extremely important, inventory management determines the quality of a business inventory, production volume, processing volume, and even the size of the cost of  scheduling  and the overall efficiency of the entire production operations. In the inventory management, in-process inventory management is a very important part. In-process inventory affects the overall efficiency and fluency of the production system, and the excess in-process inventory can lead to an increase in inventory costs and an increase in capital occupation. And in the product too little, it will lead to the products can not keep up with the next process, resulting in "hunger" effect, so that the next process of production machines have to wait, which reduces the machine utilization, but also increased Rectification of the total production process time, thereby reducing the production efficiency. In this paper, based on the inventory management of goods in the direction of the inventory management, combined with the author of the practice of "four foreign diesel engine factory" in the inventory problems in the study, combined with TOC constraint theory to find the bottleneck of the production system, the use of DBR buffer The use of push-pull combined model of in-process inventory management methods to make the inventory of goods to a reasonable number, and then through the factory's existing inventory of goods in the state of the comparison, the product inventory management Method of feasibility.

Key words: in-process inventory; TOC constraint theory; bottleneck; pull-push

目 录

1绪论 1

1.1选题背景与研究意义 1

1.2国内外研究综述 2

1.3研究内容与技术路线 3

2相关理论基础 4

2.1TOC的主要思想和方法 5

2.2生产系统瓶颈的识别 6

2.3缓冲的设置 6

2.4推式生产系统及拉式生产系统 7

3四洋柴油机厂在制品批量确定现状 8

3.1公司主要产品介绍 9

3.2380J及485J型柴油机油底壳介绍