Cmk-计算表格表格文件下载.xls
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K=ABS2AVE(X)-TU-TL/(TU-TL)=#DIV/0!
公差缩小标准偏差:
=0.75*STDEV(X1X50)=#DIV/0!
过程更改机器能力指数:
Cmk=(1-k)*(T/8)=#DIV/0!
设备大修如需要可采取以下措施(Cmk1.67时)异地生产调整中心(分布中心与标准中心趋于重合)Cmk长期停产放宽公差(需经顾客同意)Cm定期测定改用更高精度设备Cm顾客要求其它:
统计/日期:
批准/日期:
表单编号:
1611162126313641463737.00437.00837.01237.01637.0237.02437.02837.03237.036分布中心1611162126313641463737.00437.00837.01237.01637.0237.02437.02837.03237.036分布中心CmkREPORTWorkstationPartNameQualityCharacteristicsProcessNameDrawingNo.NominalMachineModelSamplingQty.USLMachineNumberDateLSLIndividualReadings12345678910ConditionNewPODistributionCenter#DIV/0!
CL0.0000NewToolingMachineCapabilityIndex(Cmk1.67)NewMachineCOV:
k=ABS2AVE(X)-TU-TL/(TU-TL)=#DIV/0!
TightenToleranceStandardDeviation:
ProcessChangeMachineCapabilityIndex:
MajorBreakdownPleasetakethefollowingactionswhenCmk1.67LocationChangeShiftprocesscentertoCLascloseaspossibleCmkStopProductionRequestcustomertoloosentoleranceCmkPeriodicalInspectionChangetomoreprecisiontoolingorequipmentCmkCustomerRequirementOthers:
Prepare/Date:
Check/Date:
ReportNo.:
AMachineCapabilityStudyisnot,strictlyspeaking,partofStatisticalProcessControl,asitdoesnotdetectthepresenceorabsenceofspecialcauses.Instead,itprovidesasnapshotofoneparticularcomponentofaprocess,oftenamachine(hencethetitle).Thiscouldwellbeofuseinthecontextof,forexample,carryingoutatrialrunonamachinebeforeagreeingtobuyit(liketestdrivingacar).AMachineCapabilityStudyisessentiallyawayofestablishingthecapabilityofthecomponent/machinebyassessinghowitoperates:
overaveryshortperiodoftimeinanidealenvironmentByanidealenvironment,wemeanoneinwhich:
themachineissetascloseaspossibletoitsoptimumvaluesitisbeingoperatedbyanexperiencedmemberofstaffitisisolatedfromthenormalworkingenvironment(andthusunlikelytobeaffectedbyspecialcausevariation)thestudytakesplaceoveraveryshortperiodoftimeTypically,about50outputsoftheprocesswouldprovidedataforaMachineCapabilityStudy.Thismayvarydependingontheoutputs.Forexample,anhoursoutputofnailsmightbemorethanenough,whereasproducing50backaxlesmightnotbepractical.