過程穩(wěn)定性評估：X－R控制圖,,,,,,,,,,,,,,,,,,,,,,,,,

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評估工序：,,,,,產(chǎn)品名稱：,,,O形圈,,,,產(chǎn)品規(guī)格：,,,φ20×2.4,,,,產(chǎn)品圖號：,,,,,,

操作人員：,,,,,產(chǎn)品批號：,,,,,,,生產(chǎn)機(jī)臺(tái)：,,,2-10,,,,評估日期：,,,,,,

測量儀器：,帶表卡尺,,,,儀器編號：,,,尺-34,,,,測量單位：,,,mm,,,,測量人員：,,,,,,

測量特性：,截面尺寸,,,,標(biāo)準(zhǔn)值：,,,2.40,,,,標(biāo)準(zhǔn)上限：,,,2.47,,,,標(biāo)準(zhǔn)下限：,,,2.33,,,

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樣本子組,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

樣本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

樣本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

樣本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

樣本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

樣本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

子組均值,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

子組極差,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

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

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

極差,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,,副圖：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,,副圖：LCL=D3*R=,,,,0,,,,,

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

"過程能力指數(shù)：CPK=min(Cpu,Cpl)=",,,,,,,1.44,,,9,0.337,2.970,0.184,1.816,,,,,,,,,,,

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

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評估結(jié)論,因CPK＞1.33，表明該工序正確、穩(wěn)定、可靠。,,,,,,,,,,,,,,,,,,,,,,,,

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子組均值,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

子組極差,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

極差,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