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YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004SPC统计过程控制YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004SPC应用背景篇课程目的：>了解SPC的历史由来.>掌握控制图基本原理.>掌握SPC的运用领域.>SPC基本统计概念YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004过程(process)是指生产产品/服务的一系列行动或操作,也指支持产品/服务的过程如管理,财务,采购与工艺.控制(control)的意思是通过过程控制成功地控制产品服务.控制是指通过经预先设计的实验及采用统计技巧成功地:1)过程进行控制;2)维持或改善控制.目标是使品质维持不变.把统计,过程及控制三个名词的英文字头起来就是SPC.什么是统计过程控制(SPC)YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004SPC就是利用统计方法去:1.分析过程的输出并指出其特性.2.使过程在统计控制情况下成功地进行和维持.3.有系统地减少该过程主要输出特性的变异.SPC几个重要概念.第一个,也是最重要的是你能否确定过程的输入和输出并把它们定量化,然后才开始控制该过程----不是先行控制.SPC是以预防代替检验,制业与其他行业一样,预防发生错误永远比事后矫正为好,而且简单得多.什么是统计过程控制(SPC)YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004简单来说，SPC是透过运用统计学上的技巧如控制图分析过程或其输出，从而作出适当的行动以达至及保持统计控制状况及改善过程能力。SPC解释为...运用统计方法于过程控制上以控制产品品质SPC什么是统计过程控制(SPC)—总结YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004统计学在生产中应用的目的1.了解产品总体性能2.取消人为特殊因素造成的极端值以稳定制程3.规格趋向目标值4.减小差异5.審核規格，看看是否適用YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004SPC可以帮助我们•区分正常波动和异常波动；•及时发现异常征兆；•消除异常因素；•减少异常波动；•提高过程能力；预防控制YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004•控制图的构成+31234567891018171615141312111098765-3Average点落在该区间的概率为99.73%控制图的构成:1.DataPoints3.UpperControlLimit2.CenterLine4.LowerControlLimitYourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,200468.26%95.45%99.73%μ+1σ+2σ+3σ-1σ-2σ-3σ正态分布的概率YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRightsReservedMQIP–AllRightsReservedBakSPCTrainingAug1-2,2004μ±kσ在內的概率在外的概率μ±0.67σ50.00%50.00%μ±1σ68.26%31.74%μ±1.96σ95.00%5.00%μ±2σ95.45%4.55%μ±2.58σ99.00%1.00%μ±3σ99.73%0.27%正态分布的概率YourProfessionalQualityImprovementPartnerYourProfessionalQualityImprovementPartnerMQIPMQIPMQIP–AllRigh...