精实生产简介.ppt

1、精密生产简介，Lets define Lean Manufacturing精密生产定义，our discussion，We will define Lean Manufacturing as the process of identifying and在这次课程讨论中，我们具体定义了在生产、设计和管理工作中寻找和消除浪费的过程。Evolution of the manufacturing system，the process of manufacturing and supplying products has evolved from simple Craft production to a

2、 fafacerespons ibilities distributed over many people。个人控制少，责任分散在所有人身上。time and resources force transition时间和资源推动了变化。customer demand is the universal driver in change所有变化的驱动因素是客户需求，客户订单，Waste浪费，X，产品交付，时间，时间正确的生产有助于缩短客户的订单和交货时间。conditions that were satis factory yesterday are not acceptable today . T

3、om orrows demands will be even greater。昨天满足的条件今天可能不被接受。明天的需求甚至会更大。X，Product Shipment交付，why make the change to lean manufacturing？为什么要转向裙带生产？lean manufacturing implementation has been shown to aid companies in the following areas :精确生产用于以下范畴之一：提高Improved productivity生产效率people not wasting effort on n

4、on-value added tasks人们不会将时间浪费在没有价值的事情上predictable and stabile environment已知且稳定的环境Greater Qu Ality assetsGreater Flexibility灵活性提高quicker response to changes in customer orders减少快速响应的需求成本成本以满足客户需求，So，what is Lean Manufacturing？那么，什么是精密生产？Remember our definition表示：“the process of identifying and elimin

5、ating waste within our operations including manufacturing，er For this在这里，将讨论限制在生产面。如何定义how should we determine what“waste”is :浪费？Waste defined:浪费定义为waste-anything that takes time，resources or space but does not add to the value of the product or service dime operators at subsequent stations waste ti

6、me waiting，thereby adding cost to the product and adding product Further more，rework may be required 此外，产品可能需要返工或报废。If a defect occurs in assembly，additional labor is required to disassemble and additional parts are required to reassemble。如果整形出现问题，需要另一个新对象进行重组。Conveyance Waste of Conveyance运输浪费，For

7、Example示例：raw material being stored away from the place of use。远离现场的物料存储结果：We must inform tracking personnel where to pick up map We will need additional storage location other than point of use，需要在现场外准备存储Processing Waste流程的浪费，performing operations that are not required to manufacture or assemble th

8、e product to the customers，Waste of Motion作业的与产品价值增加无关的时间应尽可能消除“Movement does not necessarily indicate value-added work”。移动不一定是提高价值的工作。Categories of Work任务分类value added-something the customer will pay for for增值-客户愿意支付额外的Incidental-something which has to be done费用Work、motion、waste from over-productio

9、n过度生产造成的浪费、created by producing goods above the amount required by the market过度生产、Extra dee正如生产过剩所说，超量存储需要额外的费用来维持excess inventory also covers problems in the operation。超量存储也是操作问题，调度不良，机器故障，质量问题，运输路径太长。供应商交货、行不平衡、设置、每个单个流程单独生产，然后传送到下一个流程。this is commonly referred to as the push system。这是典型的推式系统。移动材料

10、(cont.)移动材料(继续)，The push system makes adapting to change very difficult。推送系统使接受更改变得非常困难the result is extra inventories of parts not needed accumulating in the product And shortages of parts that are needed in the downstream product And shortages of parts.下游工序物料短缺，物料移动(cont.)物料移动(继续)，in com A pull sy

11、stem provides that only the downstream process receives the schedule。相反，拉式系统根据计划的生产日程表提供下游工艺对象。each upstream process maintains a standard“in-process”stock level that the subsequent process with draws from .上一道工序是遵循下一道工序所必需的。this pull triggers The department to produce parts to replenish The stock le