《Statistical Quality Control》课程教学课件（PPT讲稿）05 Process Capability（CPK）

ProcessCapabilityWuhan University on TeehnologySchool of Mechanical & Electronics EngineeringDepartment of Industrial EngineeringCunRongLi（cunrong.li@163.com）2007.4process capability

2007.4 1 Process Capability process capability Wuhan University of Technology School of Mechanical & Electronics Engineering Department of Industrial Engineering CunRong Li（cunrong_li@163.com）

ControlInputOutputProcessResourcesProcess--An active system transforms input intooutput by using resources.2007.4The concept of process(definition)2

2007.4 2 The concept of process(definition) Process-An active system transforms input into output by using resources. Process Input Output Control Resources

inputoutputProcessAcontrolcontrolinputoutputoutputProcess DProcess BinputIn quality management system,resourcesinputany process will not existProcess Coutputin isolation.The effective operation of the processThe relationship amongnetwork is an important condition forseveral processes constitutethe effective operation of the qualitythe process networkmanagement system2007.4Theconceptof process(definition)3

2007.4 3 The concept of process(definition) In quality management system, any process will not exist in isolation . The relationship among several processes constitute the process network. Process A input Process B Process D Process C input input output output output control resources input output The effective operation of the process network is an important condition for the effective operation of the quality management system. control

inputoutputProcess AcontrolcontrolinputoutputoutputProcess DProcessBinputresourcesinputProcess CoutputProcessesusedbytheorganizationandtheinteractivesystematicidentification andmanagementoftheseprocessescanbe calledProcessApproach2007.4.Theconceptofprocess(definition)

2007.4 4 The concept of process(definition) Processes usedby the organization and the interactive systematic identification and management ofthese processes can be calledProcess Approach. Process A input Process B Process D Process C input input output output output control control resources input output

Process Approach is one of theCustomeieight principles of qualityfocusmanagement.Continual improvementIhvolvemehtofpeopleMutuallybeneficiaLeadershipsupplierrelationshipProcess approach;System approach to management;Factual approach to decision making;Requirements ofis09000 for process contr017.4

2007.4 Requirements ofISO9000 for process control 5 ❖Process approach； ❖System approach to management； ❖Factual approach to decision making； Leadership Involvement of people Mutually beneficial supplier relationship Continual improvement Customer focus Process Approach is one of the eight principles of quality management

Continual improvement ofquality management systemManagementSresponsibilityRACCETUUResourceMeasurement,QISSManagementanalysis,USTTimprovementIF00RAMMECEEMTRREinputIProductoutpuiN0realizationproductTN2007.4Quality management system model based on process6

2007.4 Quality management system model based on process 6 C U S T O M E R C U S T O M E R R E Q U I R E M E N T S A T I S F A C T I O N Continual improvement of quality management system Management responsibility Resource Management Measurement, analysis, improvement Product realization product input output

&StandardencouragesorganizationsuseprocessapproachestablishingandimplementinggualitymanagementsystemandimprovingitseffectivenessTypicallythe activity transforming inputintooutputcanbecalledprocess*Typicallythe output process could directlyformtheinputtothenextprocess.&SystemapplicationmadeupbyprocessesoftheorganizationandtheidentificationandinteractionsoftheseprocessesandtheirmanagementcouldbecalledprocessapproachAdvantage of theprocess approach is:contactamongindividualprocessesofthesystemmadeupbyseveralprocessesand the combinationofprocessesandinteractioncouldbecontrolledcontinually.Requirements ofis09000 for process controp7.4

2007.4 7 ❖ System application made up by processes of the organization and the identification and interactions of these processes and their management could be called process approach. ❖ Advantage of the process approach is:contact among individual processes of the system made up by several processes and the combination of processes andinteraction couldbe controlledcontinually. Requirements ofISO9000 for process control ❖ Standard encourages organizations use process approachestablishing and implementing quality management system and improving its effectiveness. ❖ Typically the activity transforming input into output can be calledprocess. ❖ Typically the output process could directly form the inputto the nextprocess

Proceosapproach:The activities and relatedresourcesare managed as processes,it canmore efficiently obtain the desired effect.Points:Theprocessisanactivesystemtheuseofresourceswillbeenteredintotheoutput.Anyoftheactivitiescanbemanagedasaprocess.Theprincipleofprocessapproachappliesnotonlytotheorganization'sgualitymanagementinsomeofthemoreindependentandsimpleprocess,butalsototheprocessbyanetworkcomposedofmanyprocesses.2007.48ISO9000:2001Qualitymanagementprinciples

2007.4 8 ISO 9000:2001 Quality management principles Process approach： The activities and related resources are managed as processes, it can more efficiently obtain the desired effect . ❑ The process is an active system the use of resources will be entered into the output.Any of the activities can be managed as a process. ❑ The principle of process approach applies not only to the organization's quality management in some of the more independent and simple process, but also to the process by a network composed of many processes. Points ：

PrineipleofprocesapproachisthepecirierelectionandapplicationofaualitymanagementofyberneticsCybernetics is a science which researches machine, life andsocial control and communication of the general Iaws,whichresearches dynamic system and how to maintain the equilibriumor steady state under the changing environmental conditionsIt consists of three parts:Informationtheory:thevariouspathwaysofinformationprocessing,transmissionandstorageofstatisticaltheory.Automaticcontroltheory:mainlyresearchesthefeedback,theregulationandcontrolofthegeneralrulesofthesystem.Automaticfastcomputertheory:whoesautomaticorganizationallogicprocessissimilartohumanthoughtprocesses.2007.49

2007.4 9 ❑ Information theory: the various pathways of information processing, transmission and storage of statistical theory. ❑ Automatic control theory: mainly researches the feedback,the regulation and control of the general rules of the system. ❑ Automatic fast computer theory :whoesautomatic organizational logic process is similar to human thought processes. Principle of process approach is the specific reflection and application of quality management of cybernetics. Cybernetics is a science which researches machine, life and social control and communication of the general laws,which researches dynamic system and how to maintain the equilibrium or steady state under the changing environmental conditions. It consists of three parts:

Process approach emphasizes the importance ofthese respects when applies to the qualitymanagementsystem.UnderstandingandmeetingrequirementsValue-addedprocessesneedtobeconsidered.S5Obtain process performance and effectivenessresult.Basedonobiectivemeasurement,continuous?improvementprocess.Controlled,value-added andcontinuous improvementls09oooStandardreguirementstoprocess2007.4control10

2007.4 10 ISO9000 Standard requirements to process control Process approach emphasizes the importance of these respects when applies to the quality managementsystem. ❖ Understandingand meetingrequirements. ❖ Value-addedprocesses needto be considered. ❖ Obtain process performance and effectiveness result. ❖ Based on objective measurement , continuous improvement process. Controlled, value-added and continuous improvement