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12345678910111213141516171819202122232425150152981251231231231231239813513513513530013513540013513513513513513513536938:30~9:0009:00~10:002210:00~11:00011:00~12:00012:30~13:001113:00~14:001114:00~15:001121111815:00~16:001116:00~17:0002101001100000012000010111131.330.6600.8000.810.810000000.331.4800000.7400.740.740.740.35%1122.00%23147.72342545≥1.331.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.811.810.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.490.49W工装X换人P管制图说明栏M反馈R维修S调整CLp过程能力请设定参数允许的p=样本量n=子组数k=过程能力CPK结论不满足=1.12730.0164798不合格品率的平均值AVE(P)=∑(npk)/∑nk=标准偏差σp=SQRT{AVE(P)[1-AVE(P)]/n}=上控制线UCLp=AVE(P)+3σp=下控制线LCLp=AVE(P)-3σp=△临界距离=允许的不良率P-AVE(P)=0.35%0.00490.0181-0.0111控制期限抽样方法装配车间气密性检验=△临界距离/3σp制造部门工序名称零件图号最大值控制图控制上限合计测量单位操作者编制者平均值最小值中心线控制下限零件名称质量特性日期序号P控制图1.81气密性1.480.00UCLp生产技术科生产数量不良缺陷记录数在控制图中标注过程重大事件。在计算P时过程必须是受控状态。P-chart说明事项:0.370.00原因追踪UCLp=CLp=LCLp=数据必须从生产现场取得。确保每批容量保持一致。不良数d不良率p0.4900.511.5212345678910111213141516171819202122232425系列1UCLpCLp时间
本文标题:P控制图
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