质量控制与质量管理：4-简单的质量工具

1、Seven quality control toolsBasic tools for QM (chapter 19) 7 tools：Cause-effect diagram, Pareto, histogram, control charts, scatter diagrams, flow chart and check sheet Mathematical statistics: regression, ANOVA, multivariate analysis, DOE, time series analysis, etc.Cause-and-effect diagram: 4M1EUnc

2、learcopyCopyingpaperCopyingmachineoperatorOriginalcopyCopying methodCarbonpowderEnvironmentKeepingtimeKeepingmethodExposurecapabilityPaperqualityRollerCleannessUsing timeBulblightingSharpnessDraftsqualityConcentrationSkillHumidityRoomcleannessHand cleannessPressure Exposure tolightLoadingproperlyUsi

3、ng timeNo.Proc. ScrapsRatioCum.Ratio1weld346543.643.62paint213726.970.53rivet127311.686.54coat4826.192.65mark4205.397.96other1682.1100total7945100Pareto is prioritizationIt orders occurrence data byType, category or other classification.It helps us focus on important things.Pareto principle: 80/2070

4、.586.592.697.910043.6123456Histogram141141143143148148150150148148141141154154132132132132144144137137142142138138144144139139142142154154126126143143143143142142140140140140153153150150144144131131149149146146142142143143146146155155141141141141149149158158140140149149138138150150145145148148142142

5、140140135135135135149149147147147147148148142142148148146146152152137137144144141141143143134134150150136136144144144144149149140140141141146146145145146146143143147147149149142142147147140140158158137137146146142142145145152152137137142142124.5124.50 0129.5129.51 1134.5134.54 4139.5139.51010144.5144.53333149.5149.52424154.5154.59 9159.5159.53 3Scatter DiagramCheck SheetFlow ChartControl ChartShewhart control chart : 8 control charts The most important thing is choosing the factors you want to control.chartuchartMRXchartcchartRSchartnpchartsXchart