控制图的制作知识培训

1、控制图的制作知识培训控制图的制作知识培训 G-2 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department2如何制作常规控制图如何制作常规控制图Section- II控制图判定准则及注意事项控制图判定准则及注意事项Section- III回顾柏拉图回顾柏拉图Section- I问题问题Section- IVG-3 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department3回顾柏拉图回顾

2、柏拉图Section- IG-4 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department4做柏拉图前提首先要有什么？做柏拉图前提首先要有什么？ 提示：提示：SPC七工具之一七工具之一G-5 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department5G-6 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engine

3、ering Department6DC Ionizer Redlight-awers main problems(total about 60%): Red alarm :13eaIonizer fan broken: 12eaFan noise: 10eaG-7 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department7如何制作常规控制图如何制作常规控制图Section- IIG-8 2008 SAE Magnetics (HK) LimitedPresented by SAE Indu

4、strial Engineering Department8 1.1 定義：控制圖又叫管理圖。它是用于分析和判斷工序是否處于控制狀態所使用的帶有控制界限線的圖 1.2 目的：消除系統性原因的影響，保持工序處于穩定狀態而進行動態控制。預防坏品的產生。 1.3 原理：3 原理G-9 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department9G-10 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering De

5、partment10G-11 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department11G-12 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department12无无无无无数据个数上下控制线为什么这样计算？上下控制线为什么这样计算？G-13 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Dep

6、artment13USL:規範/設計上限 (UPPER SPEC. LIMIT)LSL:規範/設計下限 (LOWER SPEC. LIMIT)UCL:上限 (UPPER CONTROL LIMIT)LCL:下限 (LOWER CONTROL LIMIT)X :平均值 (MEAN , PROCESS MEAN)sd:標準差 (STANDARD DEVIATION )UCL = X + 3 , LCL = X - 3 , = Design Mean ( Xi - X )2 n-1 =G-14 2008 SAE Magnetics (HK) LimitedPresented by SAE Indus

7、trial Engineering Department14Xbar-ChartUCL=Xbarbar + A2 x Rbar =4.629 + 0.577x0.596 =4.97LCL=Xbarbar A2 x Rbar = 4.29R-ChartUCL= D4 x Rbar = 2.115 x 0.596 = 1.26G-15 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department15G-16 2008 SAE Magnetics (HK) LimitedPresented by S

8、AE Industrial Engineering Department16控制图判定准则及注意事项控制图判定准则及注意事项Section- IIIG-17 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department17控制图是通过抽取总体的样本数值进行判断，既然是抽样，就存在错判()及漏判()的风险。为了取得更多的经济利益，我们使用3来进行控制G-18 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineerin

9、g Department18任何点超越控制限控制上限以外控制上限以外Outside the Upper Control Limit8.08.18.28.38.48.58.68.7123456789 10 11 12 13 14 15LCLAverageUCL控制下限以外控制下限以外Outside the Lower Control Limit8.08.18.28.38.48.58.68.7123456789 10 11 12 13 14 15LCLAverageUCLG-19 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial

10、Engineering Department19连续七点向上或向下-走势连续七点向下连续七点向下Downward run of seven consecutive points连续七点向上连续七点向上Upward run of seven consecutive points8.08.18.28.38.48.58.68.7123456789 10 11 12 13 14 15LCLAverageUCL8.08.18.28.38.48.58.68.7123456789 10 11 12 13 14 15LCLAverageUCLG-20 2008 SAE Magnetics (HK) Limit

11、edPresented by SAE Industrial Engineering Department20连续七点在平均值以上或以下-偏移连续七点在平均值连续七点在平均值以上以上Run of seven consecutive points above the average8.08.18.28.38.48.58.68.7123456789 10 11 12 13 14 15LCLUCL连续七点在平均值连续七点在平均值以下以下Run of seven consecutive points below the average8.08.18.28.38.48.58.68.7123456789 1

12、0 11 12 13 14 15LCLAverageUCLAverageG-21 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department21参考附件：G-22 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department221.注意根据计量、计数、计点等选择合适的控制图2.控制图必须有控制线3.控制线可以根据一段时间的生产变化更改G-23 2008 SAE Magnetics (HK) LimitedPresented by SAE Industrial Engineering Department23问题问题Section- IVG-24 2008 SAE Magnetics