求解，汽车行业实际数据分析

活塞销孔截面1 活塞销孔截面2 螺栓孔左侧截面1
X1 Y1 直径 X2 Y2 直径 锪平面高度（左） Y1 Z1 直径
NOM 22.96 0 22.215 22.96 0 22.215 191.35 31.55 12.3 9.22
USL 0.05 0.05 0.02 0.05 0.05 0.02 0.125 0.19 0.19 0.05
LSL -0.05 -0.05 -0.02 -0.05 -0.05 -0.02 -0.125 -0.19 -0.19 -0.05
23.010 .050 22.235 23.010 .050 22.235 191.475 31.740 12.490 9.270
22.910 -.050 22.195 22.910 -.050 22.195 191.225 31.360 12.110 9.170
R-Bar (sub-groups of 5 only) .0140 .0118 .0025 .0124 .0095 .0018 .0272 .0836 .0246 .0063
R-Bar/d2 (sub-groups of 5 only) .0060 .0051 .0011 .0053 .0041 .0008 .0117 .0360 .0106 .0027
X-Double Bar (sub-groups of 5 only) 22.9928 .0630 22.2094 22.8800 .0551 22.2113 191.2927 31.4277 12.2091 9.2211
Cpu (sub-groups of 5 only) 0.95 -0.85 7.99 8.16 -0.41 10.41 5.19 2.90 8.87 6.05
Cpl (sub-groups of 5 only) 4.59 7.40 4.49 -1.88 8.53 7.14 1.93 0.63 3.13 6.32
Cp (sub-groups of 5 only) 2.77 3.28 6.24 3.14 4.06 8.78 3.56 1.76 6.00 6.18
Cpk (sub-groups of 5 only) 0.95 -0.85 4.49 -1.88 -0.41 7.14 1.93 0.63 3.13 6.05
UCLx(sub-groups of 5 only) 23.00 0.07 22.21 22.89 0.06 22.21 191.31 31.48 12.22 9.22
LCLx(sub-groups of 5 only) 22.98 0.06 22.21 22.87 0.05 22.21 191.28 31.38 12.19 9.22
UCLR(sub-groups of 5 only) 0.03 0.02 0.01 0.03 0.02 0.00 0.06 0.18 0.05 0.01
LCLR(sub-groups of 5 only) NO NO NO NO NO NO NO NO NO NO
Average 22.993 0.063 22.209 22.880 0.055 22.211 191.293 31.428 12.209 9.221
Max Number 23.006 0.069 22.211 22.889 0.060 22.212 191.310 31.533 12.238 9.225
Min Number 22.984 0.051 22.208 22.869 0.048 22.210 191.265 31.374 12.198 9.216
Range 0.022 0.018 0.003 0.020 0.012 0.002 0.045 0.159 0.040 0.009
STDEV 0.007 0.005 0.001 0.007 0.004 0.001 0.015 0.059 0.011 0.003
Ppu 0.82 -0.83 8.94 6.61 -0.47 10.88 4.15 1.75 8.22 6.13
Ppl 3.96 7.26 5.02 -1.52 9.72 7.46 1.54 0.38 2.90 6.41
Pp 2.39 3.21 6.98 2.54 4.62 9.17 2.85 1.07 5.56 6.27
Ppk 0.82 -0.83 5.02 -1.52 -0.47 7.46 1.54 0.38 2.90 6.13
% Ppk of Cpk 14% 2% 12% 19% 14% 4% 20% 39% 7% 1%
1 22.988 0.063 22.211 22.878 0.056 22.212 191.292 31.399 12.207 9.219
2 22.985 0.062 22.210 22.875 0.057 22.211 191.269 31.533 12.206 9.220
3 22.986 0.058 22.210 22.879 0.053 22.211 191.291 31.463 12.210 9.221
4 22.984 0.051 22.208 22.869 0.048 22.210 191.265 31.529 12.198 9.222
5 23.006 0.067 22.209 22.876 0.060 22.211 191.303 31.395 12.200 9.221
6 22.997 0.065 22.209 22.889 0.057 22.212 191.303 31.374 12.213 9.225
7 22.997 0.065 22.209 22.887 0.056 22.211 191.310 31.403 12.201 9.216
8 22.996 0.069 22.209 22.885 0.051 22.212 191.301 31.398 12.238 9.224
9 22.991 0.062 22.209 22.886 0.058 22.211 191.299 31.399 12.213 9.221
10 22.997 0.066 22.211 22.875 0.054 22.212 191.293 31.383 12.206 9.222



上面是连续抽取的10个样本的数据和各能力指数，能力不合格的位置度X，Y方向的CPK和PPk有什么可以提高的方法，从数据来看PP是合格的。那么怎么分析这些尺寸存在什么问题呢？