文档介绍：Lead Time Reduction
缩短制造周期
© 1998 General Motors Corporation. All rights reserved.
10/12/98 1

Purpose of Lead Time Analysis
分析制造周期的目的
• To document all steps in a process
记录过程中的每一个步骤
• To quantify the time and distance of each step in a process 测
量过程中每一个步骤所需的时间和距离
• To identify where value is being added to the process
识别过程的增值步骤
• To understand how non-value added activities drive cost in a
process 了解非增值步骤是怎样增加过程成本的
• To learn that reducing Lead Time contributes directly to
improving Q,S,T, P and Customer Satisfaction. 理解制造周期
. 和客户的满意程度
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© 1998 General Motors Corporation. All rights reserved.
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Lead Time -Oil Change周期-更换机油
Car Dealer A汽车经销商A Car Dealer B汽车经销商B Quick Lube快速换机油
• Call: make appointment • Drive into lube area • Drive into lube area
电话预约开车至换油处开车至换油处
• Take car in 将车开来• Write up order写定单• Write up order while
• Write up order写定单• Pay cashier付款 oil is being changed
• Wait for shuttle等待周转• Wait等候写定单同时换油
• Call: See if car is done • Pick up car取车• Pay cashier付款
电话询问• Drive off开走• Drive off开走
• Get ride back to dealer
再次前来
• Check with service
检查服务
• Pay cashier付款
• Look for your car找车 Improved改进之后 Ideal理想状态
• Check oil检查机油• 29 Minutes29分钟• 10 Minutes10分钟
• Drive away开走
Traditional传统方式
• 8 Hours8小时
© 1998 General Motors Corporation. All rights reserved.
10/12/98 4

Lead Time Reduction
缩短制造周期
Eliminates waste because the more time it takes to
complete a product or service:
要消除浪费是因为完成产品或服务所花的时间越长,则:
Cost
成本
Quality
质量
© 1998 General Motors Corporation. All rights reserved.
10/12/98 5

Lead Time
制造周期
Definition:定义:
Total time required plete one unit of a
product or service. 完成一个产品或提供一项服务
所需的总时间。
Lead Time制造周期
Start Finish
开始完成
© 1998