QC新老七种工具.ppt

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1、Histogram（直方图）特性要因度（鱼刺图）ParetoDiagram（CheckSheet（检查表）各种Graph（工程图）ScatterDiagram（散布）图分层(Stratification)DATA的分布(散布,)Characteristic/Cause-and-Effect/FishboneDiagram查找问题偏重的项目和其程度→为了最大化改善效果选定重点改善(或者管理)ParetoDiagram等的Backdata两个变数间相关关系按照DATA的特性要因度分成几个部分分成主要散布

2、的因子找散布的原因后使用区间YManMachineMaterialMethod◆◆◆◆◆◆◆◆◆Data100%80%ⓐⓑⓒⓓABCD正正正◆◆◆◆◆◆◆◆◆...............................QC7Tool1.Histogram？（直方图）?QC7ToolStudy:Histogram4.224.144.064.084.044.154.104.004.084.154.104.124.163.964.014.183.994.054.124.074.054.184.124.05

3、4.074.084.084.124.103.974.084.044.164.134.094.054.104.104.064.054.064.104.084.084.164.104.044.024.084.164.084.214.124.094.024.114.004.104.124.154.124.144.054.134.184.094.084.064.054.034.104.124.144.094.144.154.054.094.184.064.084.164.024.024.204.084.114

4、.024.134.134.124.054.124.024.184.184.124.114.124.06为了了解长度,重量,强度等计量值怎么分布的制作的图，制作频数表后画柱状图。一般工程安定的情况下呈钟形状，反之按照情况查找有什么异常原因。一般散布大是表示工程差，因此找出原因，树立对策改善工程能力的活动必要。Data区间编号区间的界限值中心值频度1234567893.955~3.9853.985~4.0154.015~4.0454.045~4.0754.075~4.1054.105~4.1354.135

5、~4.1654.165~4.1954.195~4.2253.974.004.034.064.094.124.154.184.2124101726191363100N=100频度3.9553.9854.0154.0454.0754.1054.1354.1654.1954.225区间频数分布表Histogram2.Histogram制作步骤QC7ToolStudy:Histogram1.Data收集至少30个以上,越多可靠性越好4.224.144.064.084.044.154.104.004.084.1

6、54.104.124.163.964.014.183.994.054.124.074.054.184.124.054.074.084.084.124.103.974.084.044.164.134.094.054.104.104.064.054.064.104.084.084.164.104.044.024.084.164.084.214.124.094.024.114.004.104.124.154.124.144.054.134.184.094.084.064.054.034.104.124.14

7、4.094.144.154.054.094.184.064.084.164.024.024.204.084.114.024.134.134.124.054.124.024.184.184.124.114.124.062.最大值(L)最小值(S)求各data的最大值(L)外最小值(S)最大值(L)=4.22,最小值(S)=3.963.区间数Data数50~100100~250250以上区间k6~107~1210~20一般区间的数(k)是k=Γ.n=100,因此k为10nQC7ToolStudy:Hist

8、ogram4.区间幅度(h)h=4.22-3.9610区间幅度=最大值(L)-最小值(S)临时区间数※测定最小单位的正倍数=0.026※测定的最小单位0.01的正倍数h=0.035.界限出发点=最小值–最小测定单位/2第一区间=出发点~出发点+区分幅度第二区间=第一阶段的上限~第一区间上限+区间幅度.....求包含最大值区间出发点=3.96-0.01/2=3.955第一区间=3.955~3.985第二区间=3.985~4.015第三区间=4.015~4.