6SIGMA某工作案例1(PPT11页).pptx

PPM < LSL
8221.01
PPM > USL
*
PPM Total
8221.01
17.5
18.5
Exp. "Overall" Performance
PPM < LSL
6438.16
PPM > USL
*
PPM Total
6438.16
工程能力： 改善前：6438PPM 改善后：493PPM 向上率：92.4%
Nut 拔出力越大越好，为了得到最大Nut Force,(Max Y) 调整X’s 的水准 .并进行 Confirming Test.
Code A B D E
Factor Nut Dim C/L Dim Bond Point Height
Levels +1 -1 +1 +1
最佳值 4.1 3.6 3 0.5
0.019 0.009 0.06068 0.15 0.880
Bond*Point Hi
-0.044 -0.022 0.06068 -0.36 0.726
Bond*Nut High
-0.106 -0.053 0.06068 -0.88 0.402
Point Hi*Nut High -0.194 -0.097 0.06068 -1.60 0.141
Data Analysis
Pareto Chart of the Standardized Effects
(response is Force, Alpha = .05)
A D B E EF AB AE C F DF BC AF AC CE CD BF DE BD BE CF AD
0
此线以上的Factor是 要留意的(A,B,D,E)
Bond
2.894 1.447 0.06068 23.85 0.000
Point Hi
0.706 0.353 0.06068 5.82 0.000
Nut High
-0.106 -0.053 0.06068 -0.88 0.402
Nut Dim*C/L Dim
0.156 0.078 0.06068 1.29 0.227
Process Data
USL
*
Target
*
LSL
13.0000
Mean
15.4308
Sample N
100
StDev (Within)
1.01327
StDev (Overall)
0.97733
LSL
6,438PP
Within
M
Overall
Potential (Within) Capability
Cp
*
CPU
*
CPL
0.80
Cpk
0.80
Cpm
*
Overall Capability
Pp
*
PPU
*
PPL
0.83
Ppk
0.83
12.5
13.5
14.5
15.5
16.5
Observed Performance
PPM < LSL
0.00
PPM > USL
*
PPM Total
0.00
Exp. "Within" Performance
Term
Effect
Coef SE Coef
T
P
Constant
12.159 0.06068 200.40 0.000
Nut Dim
3.844 1.922 0.06068 31.67 0.000
C/L Dim
-2.569 -1.284 0.06068 -21.17 0.000
C/L Poin
0.119 0.059 0.06068 0.98 0.351
Process Capability Analysis for Nut Force
Process Data
USL
*
Target
*
LSL
13.0000
Mean
15.8912
Sample N
100
StDev (Within) 0.883772
StDev (Overall) 0.877654
LSL
Potential (Within) Capability
Cp
*
CPU
*
CPL
1.09
Cpk
1.09
Cpm
*
OHale Waihona Puke Baiduerall Capability
-0.106 -0.053 0.06068 -0.88 0.402
C/L Dim*C/L Poin
0.106 0.053 0.06068 0.88 0.402
C/L Dim*Bond
-0.044 -0.022 0.06068 -0.36 0.726
C/L Dim*Point Hi
-0.031 -0.016 0.06068 -0.26 0.802
C/L Dim*Nut High
0.056 0.028 0.06068 0.46 0.653
C/L Poin*Bond
0.069 0.034 0.06068 0.57 0.584
C/L Poin*Point Hi
0.081 0.041 0.06068 0.67 0.518
C/L Poin*Nut High
Nut Dim*C/L Poin
0.094 0.047 0.06068 0.77 0.458
Nut Dim*Bond
-0.006 -0.003 0.06068 -0.05 0.960
Nut Dim*Point Hi
0.131 0.066 0.06068 1.08 0.305
Nut Dim*Nut High
Nut Force的模型等式（Force Regression Equation)： Force=12.159+1.922(Nut Dim) – 1.284(C/L Dim)+1.447(Bond)+0.353(Point Height)
NOV-23-2000
1
Select Value for Major Factor
10
20
30
A: Nut Dim B: C/L Dim C: C/L Poin D: Bond E: Point Hi F: Nut High
Fractional Factorial Fit: Force versus Nut Dim, C/L Dim, ...
Estimated Effects and Coefficients for Force (coded units)
在此种条件下对100ea 测试Nut Force ,对Data 进行Process Capability Analysis.
NOV-23-2000
2
Process Capability Analysis for Nut Force
改善前
改善后 I
Process Capability Analysis for C3