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过程稳定性评估：X－R控制图,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,

评估工序：,,,,,产品名称：,,,O形圈,,,,产品规格：,,,φ20×2.4,,,,产品图号：,,,,,,

操作人员：,,,,,产品批号：,,,,,,,生产机台：,,,2-10,,,,评估日期：,,,,,,

测量仪器：,带表卡尺,,,,仪器编号：,,,尺-34,,,,测量单位：,,,mm,,,,测量人员：,,,,,,

测量特性：,截面尺寸,,,,标准值：,,,2.40,,,,标准上限：,,,2.47,,,,标准下限：,,,2.33,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,

样本子组,08:00,08:30,09:00,09:30,10:00,10:30,11:00,11:30,12:00,12:30,13:00,13:30,14:00,14:30,15:00,15:30,16:00,16:30,17:00,17:30,18:00,18:30,19:00,19:30,20.00

样本1,2.40,2.38,2.39,2.40,2.38,2.39,2.39,2.38,2.42,2.41,2.39,2.39,2.43,2.38,2.38,2.38,2.39,2.40,2.39,2.38,2.40,2.40,2.40,2.38,2.38

样本2,2.41,2.39,2.39,2.39,2.39,2.41,2.41,2.39,2.39,2.42,2.38,2.41,2.38,2.40,2.38,2.39,2.41,2.41,2.41,2.39,2.41,2.39,2.38,2.38,2.38

样本3,2.39,2.37,2.41,2.38,2.41,2.41,2.39,2.44,2.43,2.40,2.41,2.39,2.38,2.42,2.39,2.42,2.40,2.38,2.39,2.40,2.41,2.39,2.41,2.41,2.39

样本4,2.38,2.40,2.40,2.39,2.39,2.38,2.38,2.38,2.38,2.40,2.38,2.38,2.39,2.42,2.39,2.39,2.42,2.39,2.38,2.40,2.38,2.38,2.43,2.39,2.42

样本5,2.42,2.39,2.39,2.43,2.41,2.38,2.39,2.40,2.40,2.39,2.44,2.39,2.40,2.42,2.39,2.41,2.40,2.43,2.39,2.38,2.39,2.39,2.40,2.41,2.42

子组均值,2.400,2.386,2.396,2.398,2.396,2.394,2.392,2.398,2.404,2.404,2.400,2.392,2.396,2.408,2.386,2.398,2.404,2.402,2.392,2.390,2.398,2.390,2.404,2.394,2.398

子组极差,0.040,0.030,0.020,0.050,0.030,0.030,0.030,0.060,0.050,0.030,0.060,0.030,0.050,0.040,0.010,0.040,0.030,0.050,0.030,0.020,0.030,0.020,0.050,0.030,0.040

,,,,,,,,,,,,,,,,,,,,,,,,,,

均值,X＝,2.397,,,,,,,,样本,A2,d2,D3,D4,,控制上限:UCL＝X+A2×R＝,,,,,2.41757,,,,

,,,,,,,,,,2,1.880,1.128,0.000,3.267,,,,,,,,,,,

极差,R＝,0.036,,,σ=R/d2=,,0.02,,,3,1.023,1.693,0.000,2.574,,控制下限:LCL＝X-A2×R＝,,,,,2.37603,,,,

,,,,,,,,,,4,0.729,2.059,0.000,2.282,,,,,,,,,,,

Cpu=（USL－均值）/（3σ）＝,,,,,1.58,,,,,5,0.577,2.326,0.000,2.114,,副图：UCL=D4*R=,,,,0.07610,,,,,

,,,,,,,,,,6,0.483,2.534,0.000,2.004,,,,,,,,,,,

Cpl=（均值－LSL）/（3σ）＝,,,,,1.44,,,,,7,0.419,2.704,0.076,1.924,,副图：LCL=D3*R=,,,,0,,,,,

,,,,,,,,,,8,0.373,2.847,0.136,1.864,,,,,,,,,,,

"过程能力指数：CPK=min(Cpu,Cpl)=",,,,,,,1.44,,,9,0.337,2.970,0.184,1.816,,,,,,,,,,,

,,,,,,,,,,10,0.308,3.078,0.223,1.777,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,

评估结论,因CPK＞1.33，表明该工序正确、稳定、可靠。,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,

子组均值,2.400,2.386,2.396,2.398,2.396,2.394,2.392,2.398,2.404,2.404,2.400,2.392,2.396,2.408,2.386,2.398,2.404,2.402,2.392,2.390,2.398,2.390,2.404,2.394,2.398

子组极差,0.040,0.030,0.020,0.050,0.030,0.030,0.030,0.060,0.050,0.030,0.060,0.030,0.050,0.040,0.010,0.040,0.030,0.050,0.030,0.020,0.030,0.020,0.050,0.030,0.040

均值,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397,2.397

极差,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036,0.036

UCL,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418,2.418

LCL,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376,2.376

副UCL,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076,0.076

副LCL,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000

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