精益生产推行之江森制造系统简介.pptVIP

The Hidden Factory * The Hidden Factory * Inventory Turns Definition:定义 Inventory Turns are a measure of our effectiveness in minimizing this investment required for us to do business. 库存周转率衡量我们在用最少的投资做业务方面的有效性 Higher is better. 较高的库存周转率是比较好的 Calculation:计算 Cost of Sales for One Year 一年的销售成本 Cost of the Inventory Held 持有库存成本 Inventory Turns Inventory Turns库存周转率 The Hidden Factory * Your widget is manufactured with the 5 man assembly line but also equipment that includes an internal injection molding machine in another area of the plant. The molding machine is expensive. It is also used to produce parts for other products and customers. It takes an average of 2.5 hours to change over from one product to another, including the time to change tools and to purge materials. In order to maximize efficiency the molding machine makes the parts in one day that you require for an entire week. Occasionally emergency exceptions occur and special runs are made when the customer demands for a particular color are exceptionally high such as when they are producing police cruisers, or when our scrap runs high for a particular version. With 3 days buffer stock for each color our goal is to have 8 days of the molded part after they produce our parts for the week. 你的产品由一条5个人工的装配线以及一个同在一个车间但是不同区域的注塑机生产. 注塑机很贵,它同时也为其他客户的别的产品生产零件.因此平均需要2.5小时来转换产品生产, 包括换工具和换注塑材料的时间.为使效率最大化,注塑机一天就把整个星期客户需要的零件生产完.偶尔会有一些紧急状况或者客户特殊要求的产品量增大, 例如他们需要生产警车时要求特别的颜色, 或者当我们生产一个特别的版型而报废率很高时, 我们的目标是在一星期的量完成以后,每种颜色再多生产三天的缓冲库存,以保证8天的产量. Exercise #2: 练习二: The Hidden Factory * Question #1 问题一 What would the average number of days of inventory be for the molded part? What would it’s inventory turns be? 注塑件平均应该保持几天库存? 库存周转量是多少? What would the average be if the molding area could produce our parts every day, maintaining 3 days buffer for each color? 如果注塑区能够每天生产我们需要的零部件, 每种颜色3天的缓冲量,平均库存会是多少?. What would the average be if we produced daily while maintaining a one day buffer? 如果保持一天的缓冲库存, 平均库存