Synchronization--Chinese全解.ppt

Shanghai YFJC Guangzhou Branch * 提高座椅滑道同步率 上海xxxxxx公司 倡导者: xx 过程所有人: xx 黑带: xx 黑带大师: xx Sigma Trac ID # xxx 项目时间进度 定义阶段: 06/24/03 衡量阶段: 07/23/03 分析阶段: 09/23/03 改进阶段: 11/07/03 控制阶段: 12/23/03 确认阶段: 03/23/04 xx xx xx xx 项目小组成员 0 Recognize project chance. Identify what’s important to the customer. 2003年6月份客户抱怨情况 啊？不同步问题的比率这么高呀，让我们一起请6sigma帮忙吧！ Identify what’s important to the customer. Define project scope. 1 Define 问题描述 Background: 某新车型于2003年6月批产 客户要求座椅必须符合客户的相应标准 此前的车型对于座椅没有相应要求 Problem: 客户于 2003年6月中旬, 抱怨很大比例的座椅不符合同步性要求 These were the original data Define 1 Identify what’s important to the customer. Define project scope. 初始状态 1 Identify what’s important to the customer. Define project scope. 从以上两个P图可以得出结论：初始过程是稳定的 Measure 进程图 Measure Measure Determine what to measure (Y) and validate the measurement system. 2 YC = Customer audit result of Sunny (Average synchronization rate) YP = YFJC audit result of Sunny (Average synchronization rate) 客户处的衡量系统无法进行分析 由此属性数据衡量系统分析结果可知：96.67%，我公司内的衡量系统是可接受的 Analyze Cause Effect Plot—For possible main effect selection 1 5 4 2 3 6 Will not discuss this cause of design 潜在原因如下: X1: 在客户处座椅装车时装车方法不当 X2: 夹具精度不同 X3: 装配座椅时装配方法不当 X4: 前靠骨架开档尺寸偏小 X5: 高度调节器铆接间隙过大 3 Identify causes (Xs) of variation and defects. Analyze Which were the real root causes? 4 Cause validation and improve action for X1 Analyze Improve X1:在客户处座椅装车时装车方法不当 客户处初始装车方法: 按图1所示车身孔顺序一次性拧紧螺栓 我们向客户建议的装车方法: 先用手预拧螺栓，然后按图1所示车身孔顺序拧紧螺栓，利用图3所示工具确保滑道位置正确 2 3 4 1 Inside Front Rear Picture no.1 Outside 1 3 4 2 Inside Front Rear Picture no.2 Outside Picture no.3 Which one is better? 4 Cause validation and improve action for X1 Analyze Improve Test and CI for Two Proportions Sample X N Sample p 1 10 30 0.333333 2 19 30 0.633333 Estimate for p(1) - p(2): -0.3 95% CI for p(1) - p(2): (-0.541228, -0.0587719) Test for p(1) - p(2) = 0 (vs not = 0):