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Sponsor Peter Zhou
Coach Peter Zhou
Champion XXXXX
Leader XXXX
Team
Member
XXXX,
XXXX
XXXX
ABCD Product AOI First Time Yield
Improvement
Oct 13, 2008 1
Continental/Tianjin - Chrysler
ALCOA
AM I CD
2
CTQ & CTP Chart
CTQ CCR Customer
Issues
VOC
Pin Position
return ppm
No Positioning
defects during
AOI test (Meet
Spec: +/-
0.4mm)
Pin positioning
problem will
cause ALCOA
assembly line
problem
TIPM board
not reliable
enough
VOB Business
Issues
CBR CTP
High scrap rate
(14%FYI)
Low output
rate with high
cost
Improve FTY%
by 10% at least
from current
86%
Reduce
Misalignment
defect rate
Remark
1. Voice of customer and voice of business to be prioritized to those which are related to project objective
2. Use VOB or VOC or both depending on the project objectives
AM I CD
3
F/E Process AOI and Packing process
ICT
PC Board
Loading
Screen Print
Component
Placement
Solder Reflow
UMG Machine
Loading
2nd UMG
Machine
Coating
Machine
Function
test
AOI Tester for
Complaint pins
AOI Tester for Tuning
fork pins
Finished Good
Packing
Shipping to customer
Process Flow AM I CD
4
Yield Current Performance – Pin Misalignment
Y = Scrap Rate
TIPM Product AOI First Time Yield Performance Trend
75.00%
80.00%
85.00%
90.00%
95.00%
100.00%
28-Oct-07
29-Oct-07
30-Oct-07
31-Oct-07
1-Nov-07
2-Nov-07
3-Nov-07
4-Nov-07
5-Nov-07
6-Nov-07
7-Nov-07
8-Nov-07
9-Nov-07
10-Nov-07
%
Average 86%
y = Pins Position Defect Rate
AM I CD
5
96%
May’08
YieldPerformance
86%
Nov’07
Project Target
AM I CDTarget
6
Team Charter Project
Selection
ID
CCR
Team
Charter
Build
Team
Map
Process
Financial
Estimation
Goal Statement
Indicator Baseline Target Target Date
Process Output 86% 96% Aug 1st 2008
Finance …… Saving 200k Aug 1st 2008
Subsequent
Team Selection
Sponsor/Champion: Scott Stryker/Chrysler, Angie Liu/Continental
Team leader.: XXX 35% - Con%
Team member: Michael Quality engineer 35%
Wang Test engineer 10%
Cao line leader 5%
Han Quality engineer 5%
Zhang Process engineer 5%
White Production super. 5%
Project Schedule
Phase Start End Remark
Define 11/30/2007 12/15/2007
Measure 12/15/2007 01/15/2008
Analyze 01/15/2008 04/28/2008
Improve 04/28/2008 05/30/2008
Control 05/30/2008 07/30/2008
Business Case
Chrysler is the biggest customer for XXX factory. TIPM for Chrysler
has been launched since end 2006. It is brand-new design product
for Continental/Tianjin, which has two sides pin on the top and
bottom PCB slide. As the pin straightness (perpendicular to the
board) is very important to customer assembly process, therefore
Tianjin factory install AOI test for inspection, but the first time yield
FTY% can’t meet the target which is above 96%.
Opportunity Statement
If we can meet FTY target 96%, we can
achieve saving at least 200k and meet
customer requirement accordingly. On time
delivery will also be assured.
Project Scope
Process Front End Process
Start Point UMG Station
End Point Packing process
Scope Focus on Tianjin facility for TIPM product
7
TIPM Product AOI First Time Yield Daily Performance Trend
65.00%
70.00%
75.00%
80.00%
85.00%
90.00%
95.00%
28-Oct-07
29-Oct-07
30-Oct-07
31-Oct-07
1-Nov-07
2-Nov-07
3-Nov-07
4-Nov-07
5-Nov-07
6-Nov-07
7-Nov-07
8-Nov-07
9-Nov-07
10-Nov-07
11-Nov-07
12-Nov-07
13-Nov-07
14-Nov-07
15-Nov-07
16-Nov-07
17-Nov-07
18-Nov-07
19-Nov-07
20-Nov-07
21-Nov-07
22-Nov-07
23-Nov-07
24-Nov-07
%
86%
88%
Quick Win Opportunity
Yield Improved to 88%
by Implement three
Opportunities from Quick Win
AM I CD
8
Pin Misalignment Position
Complaint Bent pin TIPM Medium
The complaint pin use the mechanical connective design, The tail of complain pin directly
contact PCB through hole without any soldering. So they are more easily bent during normal
production process.
X Direction
Y Direction
Bent
Pins
AM I CD
9
Pin Misalignment Position
J4-37
J4-11
J2-
17
Bent Pin Most Happened Position Is On Then Edge of
PCB Board
AM I CD
10
Pin Misalignment Position
Position Pareto chart for Real bent pin
The Pareto chart
show the major
bent pin issue
are from the
compliant pin
and occurred
more frequently
at position J4-37
& J2-17.
AM I CD
11
MachineManpower
Drop to The Ground
Transportation Shock
Material
Tilted Pin
Wrong Handling
Mounting Machine
Temperature Chamber
ICT Machine
Operator Touch Up
Separation Machine
Coating Machine
Function Fixture
Method
Unsafe Package In Process
Process Flow
Pin Handing
Temp Test Time
Oven Temp,
Time
PCB Hole Tilt
Pin Roller Defect
Fishbone Diagram
Pin Snap Slot Defect
(Top Layer pin may be
touched accidentally)
Unsafe Package after AOI
AM I CD
Different Pin Position
12
Identify
Critical
Process
Characteristic
s and Input
Indicators
AM I CD
13
MachineManpower
Drop to The Ground
Transportation Shock
Material
Tilted Pin
Wrong Handling
UMG Mounting Machine
Temperature Test
ICT Machine
Operator Touch Up
Separation Machine
Routing Machine
Function Fixture
Method
Unsafe Package In Process
Process Flow
Pin Handing
Temp Test Time
Oven Temp,
Time
PCB Hole Tilt
Pin Roller Defect
Fishbone Diagram
Pin Snap Slot Defect
(Top Layer pin may be
touched accidentally)
Unsafe Package after AOI
AM I CD
Different Pin Position
14
UMG Mounting Machine
Temperature Test
ICT Machine
Operator Touch Up
Routing Machine
Unsafe Package In Process
Pin Snap Slot Defect
AM I CDScreening
Function Fixture
15
Data Collection Plan ID IPO
Indicators
Collect Data MSA
Process
Capability
Remarks:
Other data refers to additional information from stratification perspective.
Performance
measure (Y)
Operational
definition
Data source
and location
Sample
size
Who will
collect the data
When will
data be
collected
How will
data be
collected
Other data that
should be
collected at the
same time
PIN
Misalignment
Rate
Pin
Straightness
Requirement
(+/- 0.4mm)
AOI Tester 100% QA Nov 07 AOI Tester
Process /
Input (X)
Operational
definition
Data source
and location
Sample
size
Who will
collect the data
When will
data be
collected
How will
data be
collected
Other data that
should be
collected at the
same time
Pin Position Measure Pin
Position
Jasper System 100% Jasper System Every Shift Jasper System -
16
MSA Results
MSA study on these test items
To ensure the data are reasonable, we will do MSA study for AOI 1 tester
These AOI Tester GR&R% are all less than 10% , acceptable!
See the MSA_Demo.PPT for the GR&R% study demonstration.
AM I CD
17
Pin Misalignment distribution
Check the TOP defect data distribution, The P-value is more than 0.05. It is normal distribution. But
the mean value deviation to spec center, which need further analysis.
300225150750-75
Median
Mean
11010510095908580
1st Q uartile 23.500
Median 99.500
3rd Q uartile 168.750
Maximum 308.000
84.558 107.163
82.113 113.000
88.722 104.768
A -Squared 0.72
P-V alue 0.061
Mean 95.861
StDev 96.076
V ariance 9230.529
Skewness -0.082150
Kurtosis -0.688619
N 280
Minimum -130.000
A nderson-Darling Normality Test
95% C onfidence Interv al for Mean
95% C onfidence Interv al for Median
95% C onfidence Interv al for StDev
95% Confidence Intervals
Summary for Y_j2-17
-60-120-180-240-300-360
Median
Mean
-160-165-170-175-180-185-190
1st Q uartile -214.75
Median -169.50
3rd Q uartile -134.25
Maximum -21.00
-186.81 -170.63
-187.00 -163.00
61.01 72.50
A -Squared 0.70
P-V alue 0.066
Mean -178.72
StDev 66.26
V ariance 4389.96
Skewness -0.295591
Kurtosis -0.063028
N 260
Minimum -352.00
A nderson-Darling Normality Test
95% C onfidence Interv al for Mean
95% C onfidence Interv al for Median
95% C onfidence Interv al for StDev
95% Confidence Intervals
Summary for X_j2-17
3002001000-100-200-300
Median
Mean
1051009590858075
1st Q uartile 25.500
Median 84.000
3rd Q uartile 154.500
Maximum 369.000
76.747 100.411
75.485 104.545
93.773 110.569
A -Squared 0.72
P-V alue 0.058
Mean 88.579
StDev 101.477
V ariance 10297.505
Skewness -0.240282
Kurtosis 0.998535
N 285
Minimum -319.000
A nderson-Darling Normality Test
95% C onfidence Interv al for Mean
95% C onfidence Interv al for Median
95% C onfidence Interv al for StDev
95% Confidence Intervals
Summary for X_j4-37
AM I CD
18
IndividualValue
272421181512963
0
-200
-400
_
X=-181.7
UCL=2.6
LCL=-366.0
MovingRange
272421181512963
200
100
0
__
MR=69.3
UCL=226.4
LCL=0
Observation
Values
252015105
0
-150
-300
-50-100-150-200-250-300-350
0-200-400
Within
Overall
Specs
Within
StDev 61.43289
C p 2.17
C pk 1.18
C C pk 2.17
O v erall
StDev 67.56258
Pp 1.97
Ppk 1.08
C pm *
Process Capability Sixpack of Before
I Chart
Moving Range Chart
Last 25 Observations
Capability Histogram
Normal Prob Plot
A D: 0.234, P: 0.775
Capability Plot
Bent pin Analysis
Cp/Cpk study for “Bent pin ”:
CPK: 1.18
AM I CDCapability Analysis
19
Key Process Characteristics Identified During Measurement Phase
Shows That Four Stations Need To Be Focus On…
AM I CDInitial Analysis
UMG Mounting Machine
Temperature Test/Chamber
ICT Machine
Operator Touch Up
Routing Machine
Unsafe Package In Process
Pin Snap Slot Defect
Function Fixture
20
UMG Machine
ICT Machine
Routing
Chamber & 3-temp. Testing
Same Lot PCB Board Go
Through Four Processes, Pin
Position Data Were Taken To
Analysis & Identify The Key
Process
AM I CDANOVA
21
Bent Pin Analysis – Independent and Normality Test
300250200150100500-50
99
95
90
80
70
60
50
40
30
20
10
5
1
Measure UMG
Percent
Mean 119.8
StDev 66.91
N 30
AD 0.435
P-Value 0.281
Probability Plot of Measure UMG
Normal
p-values > 0.05,
normal distribution!
30282624222018161412108642
250
200
150
100
50
0
Observation
MeasureUMG
Number of runs about median: 13
Expected number of runs: 16.0
Longest run about median: 8
Approx P-Value for Clustering: 0.132
Approx P-Value for Mixtures: 0.868
Number of runs up or down: 20
Expected number of runs: 19.7
Longest run up or down: 3
Approx P-Value for Trends: 0.559
Approx P-Value for Oscillation: 0.441
Run Chart of Measure UMG
30282624222018161412108642
300
200
100
0
-100
Observation
MeasureICT
Number of runs about median: 17
Expected number of runs: 16.0
Longest run about median: 4
Approx P-Value for Clustering: 0.645
Approx P-Value for Mixtures: 0.355
Number of runs up or down: 21
Expected number of runs: 19.7
Longest run up or down: 3
Approx P-Value for Trends: 0.724
Approx P-Value for Oscillation: 0.276
Run Chart of Measure ICT
30282624222018161412108642
250
200
150
100
50
0
Observation
MeasureRouter
Number of runs about median: 13
Expected number of runs: 16.0
Longest run about median: 6
Approx P-Value for Clustering: 0.132
Approx P-Value for Mixtures: 0.868
Number of runs up or down: 22
Expected number of runs: 19.7
Longest run up or down: 2
Approx P-Value for Trends: 0.851
Approx P-Value for Oscillation: 0.149
Run Chart of Measure Router
3002001000-100
99
95
90
80
70
60
50
40
30
20
10
5
1
Measure ICT
Percent
Mean 125
StDev 66.76
N 30
AD 0.378
P-Value 0.385
Probability Plot of Measure ICT
Normal
p-values > 0.05,
normal distribution!
250200150100500
99
95
90
80
70
60
50
40
30
20
10
5
1
Measure Router
Percent
Mean 116.5
StDev 54.66
N 30
AD 0.405
P-Value 0.332
Probability Plot of Measure Router
Normal
p-values > 0.05,
normal distribution!
All 4 p-values > 0.05,
data are independent!
AM I CDData Analysis
22
ANOVA For All Related Process
Data
Measure 3-tempMeasure ICTMeasure RouterMeasure UMG
300
200
100
0
-100
Boxplot of Measure UMG, Measure Router, Measure ICT, Measure 3-temp
Process
95% Bonferroni Confidence Intervals for StDevs
Measure Router
Measure ICT
Measure 3-temp
Measure UMG
10090807060504030
Bartlett's Test
0.394
Test Statistic 7.43
P-Value 0.059
Levene's Test
Test Statistic 1.00
P-Value
Test for Equal Variances for Measure
Measure 3 –Temp caused the
most difference (Mean Shift
a lot as compared with the
other 3 process). Equal
Variance showed at the test.
AM I CD
23
Why the 3-temp test process contribute the most
Put unit into the
trays
Put into cold
chamber
Cold temperature
function test
Put unit into the
trays
Put into hot
chamber
Room temperature
function test
AOI test
equipment
Input From Front Line
To packing station
?
3 – Temp Test Steps Breakdown
AM I CDTemperature Inspection
24
MachineManpower
Transportation Shock
Material
Tilted Pin
Wrong Handling
High Temp Chamber +85 Degree C
Function Test Fixture
Low Temp Chamber -40 Degree C
Operator Touch Up
Conveyor
Method
Unsafe Package
In Process
Process Flow
Temperature PCB Hole Tilt
Pin Roller Defect
Fishbone Diagram
Pin Snap Slot Defect
AM I CD
25
SOV
Chamber
Measure
8540
-50
-100
-150
-200
-250
Fixture
1
2
Multi-Vari Chart for Measure by Fixture - Chamber
Chamber 1
-40 Degree C
1
Chamber
Fixture
Chamber 2
+85 Degree C
2 1 2
Conduct Source Of Variation Studies (SOV)
AM I CD
26
UMG Mounting Machine
Temperature Test/Chamber
ICT Machine
Operator Touch Up
Routing Machine
Unsafe Package In Process
Pin Snap Slot Defect
Screening
Chamber Temperature
Function Fixture
AM I CD
Function Fixture
Chamber
Measure
8540
-50
-100
-150
-200
-250
Fixture
1
2
Multi-Vari Chart for Measure by Fixture - Chamber
27
Fixture 1 Fixture 2 Comparison
Mfg Date Same Same
Maintenance
Schedule
Same Same
Open Angle 85 degree 70 degree
Operation
Force
16 Ib 20 Ib
Close Angle 6 degree 2 degree
Operator A B
Usage Rate Same Same
AM I CDSetting Comparison
28
Objective of DOE
Condition I: -45 Degree C Condition II: 85 Degree C
Level 1 Level 2 Level 1 Level 2
Open Angle 85 degree 70 degree 85 degree 70 degree
Open Force 16 Ib 20 Ib 16 Ib 20 Ib
Close Angle 6 degree 2 degree 6 degree 2 degree
In order to minimize the pin bent possibility, plan to design
an experiment to optimize all the factors…
AM I CD
29
DOE at -40 Degree C AM I CD
30
Step 1. View Data
>> Data Is Normal ------ P Value > 0.05
>> No Outlier Point
>> No Apparent Upward or Downward Trend
-60-80-100-120-140-160-180
Median
Mean
-100-110-120-130-140-150
A nderson-Darling Normality Test
V ariance 1161.42
Skewness 0.311887
Kurtosis -0.532572
N 18
Minimum -179.91
A -Squared
1st Q uartile -151.12
Median -130.44
3rd Q uartile -96.99
Maximum -61.44
95% C onfidence Interv al for Mean
-144.65
0.21
-110.75
95% C onfidence Interv al for Median
-149.42 -104.81
95% C onfidence Interv al for StDev
25.57 51.09
P-V alue 0.825
Mean -127.70
StDev 34.08
95% Confidence Intervals
Summary for Measure -40
RunOrder
Measure-40
20151050
-50
-75
-100
-125
-150
-175
CenterPt
0
1
Scatterplot of Measure -40 vs RunOrder
AM I CDDOE at -40 Degree C
31
Step 2 and 3. Create and Fit Model
Term
Standardized Effect
ABC
BC
AB
AC
B
C
A
121086420
2.23
Factor Name
A O pen A ngle
B C lose A ngle
C O peration Force
Pareto Chart of the Standardized Effects (-40 Degree)
(response is Measure -40, Alpha = .05)
Factor Open Angle, Close Angle, Operation Force and
interaction between Open Angle and Operation Force are
signification a = 0.05
AM I CDDOE at -40 Degree C
32
Standardized Effect
Percent
151050-5-10
99
95
90
80
70
60
50
40
30
20
10
5
1
Factor Name
A O pen A ngle
B C lose A ngle
C O peration Force
Effect Type
Not Significant
Significant
AC
C
B
A
Normal Probability Plot of the Standardized Effects
(response is Measure -40, Alpha = .05)
Normal probability plot of effects also shows the same
effects to be significant.
AM I CDDOE at -40 Degree C
33
Open A ngle
642 201816
-100
-150
-200
Close A ngle
-100
-150
-200
Operation Force
Open
77.5 Center
85.0 Corner
Angle Point Type
70.0 Corner
Close
4 Center
6 Corner
Angle Point Type
2 Corner
Interaction Plot (data means) for Measure -40
MeanofMeasure-40
85.077.570.0
-100
-120
-140
-160
642
201816
-100
-120
-140
-160
Open Angle Close Angle
Operation Force
Point Type
Corner
Center
Main Effects Plot (data means) for Measure -40
These plots are consistent with our previous
conclusions about the effects.
AM I CDDOE at -40 Degree C
34
ANOVA indicates that at least one main effect is significant
at a = 0.05. It also indicates that curvature is NOT
significant.
AM I CDDOE at -40 Degree C
35
 Estimated effects and coefficients indicate that Open Angle, Close
Angle, Operation Force and interaction Open Angle*Operation Force
are significant at a = 0.05. The results agreed with the earlier graphs
 R-Sq = 96.38% R-Sq(adj) = 93.85%
AM I CDDOE at -40 Degree C
36
Step 4. Perform Residual Diagnostics
 The residual vs fitted (predicted) value and residual vs run order
plots do not show any patterns or trends, and do not indicate any
violations of the assumptions. The normal probability plot indicates
residuals are normally distributed
Residual
Percent
20100-10-20
99
90
50
10
1
Fitted ValueResidual
-50-100-150-200
10
0
-10
Residual
Frequency
151050-5-10-15
4.8
3.6
2.4
1.2
0.0
Observation Order
Residual
18161412108642
10
0
-10
Normal Probability Plot of the Residuals Residuals Versus the Fitted Values
Histogram of the Residuals Residuals Versus the Order of the Data
Residual Plots for Measure -40
AM I CDDOE at -40 Degree C
37
Open Angle
Residual
868482807876747270
15
10
5
0
-5
-10
Residuals Versus Open Angle
(response is Measure -40)
Close Angle
Residual
65432
15
10
5
0
-5
-10
Residuals Versus Close Angle
(response is Measure -40)
The residual vs each X do not
show any pattern
Operation Force
Residual
2019181716
15
10
5
0
-5
-10
Residuals Versus Operation Force
(response is Measure -40)
AM I CDDOE at -40 Degree C
38
Step 6. Remove non-significant terms / Refit reduced model
Remove the non-significant terms
 ANOVA indicates at least one main effect and at least one two-factor
interactions are significant at a = 0.05
 Also, curvature is not significant.
Step 5. Check for possible transformations.
AM I CDDOE at -40 Degree C
39
Term
Standardized Effect
AC
B
C
A
121086420
2.16
Factor Name
A O pen A ngle
B C lose A ngle
C O peration Force
Pareto Chart of the Standardized Effects
(response is Measure -40, Alpha = .05)
 P-values show that all effects in the model are significant.
 The value of R-Sq and R-Sq(adj) has decreased
Standardized Effect
Percent
1050-5-10
99
95
90
80
70
60
50
40
30
20
10
5
1
Factor Name
A O pen A ngle
B C lose A ngle
C O peration Force
Effect Type
Not Significant
Significant
AC
C
B
A
Normal Probability Plot of the Standardized Effects
(response is Measure -40, Alpha = .05)
Reduced
Model
Full Model
R Square 94.53% 96.38%
R Square-Adj 92.84% 93.85%
AM I CDDOE at -40 Degree C
40
Residual Diagnostics
Residual
Percent
20100-10-20
99
90
50
10
1
Fitted Value
Residual
-50-100-150-200
20
10
0
-10
-20
Residual
Frequency
20151050-5-10-15
4
3
2
1
0
Observation Order
Residual
18161412108642
20
10
0
-10
-20
Normal Probability Plot of the Residuals Residuals Versus the Fitted Values
Histogram of the Residuals Residuals Versus the Order of the Data
Residual Plots for Measure -40
 The residual vs fitted (predicted) value and residual vs run order
plots do not show any patterns or trends, and do not indicate any
violations of the assumptions. The normal probability plot indicates
residuals are normally distributed
AM I CDDOE at -40 Degree C
41
Open Angle
Residual
868482807876747270
20
10
0
-10
-20
Residuals Versus Open Angle
(response is Measure -40)
Close Angle
Residual
65432
20
10
0
-10
-20
Residuals Versus Close Angle
(response is Measure -40)
Operation Force
Residual
2019181716
20
10
0
-10
-20
Residuals Versus Operation Force
(response is Measure -40)
The residual vs each X do not
show any pattern
AM I CDDOE at -40 Degree C
42
Model is adequate, therefore we can use it for predicting
future responses at specified settings of control factors.
Chosen Model for the Fixture in uncoded units is:
Y (Pin Position) = 597.769 – 6.96360(Open Angle) + 7.18076(Close
Angle) - 60.4389(Operation Force) + 0.628457(Open
Angle)*(Operation Force)
Step 7. Choose Improved Model
AM I CDDOE at -40 Degree C
Pin Position Specification: 0 +/-0.4mm
43
Predict Pin Position at the following level of X’s
 Open Angle = 85 degree
 Close Angle = 6 degree
 Operation Force = 16 lb
AM I CDDOE at -40 Degree C
44
MeanofMeasure-40
85.077.570.0
-100
-120
-140
-160
642
201816
-100
-120
-140
-160
Open Angle Close Angle
Operation Force
Point Type
Corner
Center
Main Effects Plot (data means) for Measure -40
Open A ngle
642 201816
-100
-150
-200
Close A ngle
-100
-150
-200
Operation Force
Open
77.5 Center
85.0 Corner
Angle Point Type
70.0 Corner
Close
4 Center
6 Corner
Angle Point Type
2 Corner
Interaction Plot (data means) for Measure -40
Step 8. Interpret Chosen Model
AM I CDDOE at -40 Degree C
45
6
ure -40
-120
4
-90
-60
Close Angle70 75 280 85
Open Angle
Hold Values
Operation Force 16
Surface Plot of Measure -40 vs Close Angle, Open Angle
Open Angle
CloseAngle
-70
-80
-90
-100
-110
-120
-130
8482807876747270
6
5
4
3
2
Hold Values
Operation Force 16
Contour Plot of Measure -40 vs Close Angle, Open Angle
Contour plot shows at what
different settings of X’s can
achieve the target Y. It also shows
that the direction of meeting Y
requirement. (0+/-0.4mm)
AM I CDDOE at -40 Degree C
Look For Maximum
46
Step 9. Implement New Process/Make Confirmation Runs
 Plan to run 10pcs confirmation runs
 Predict response y=-63.7694 at the optimum settings above
 Compute the appropriate confidence interval of prediction based on the
number of confirmation test run.
 Conduct 10 confirmation runs. Calculated average of the confirmation
runs falls within the calculated confidence interval. (Average 10
confirmation run = - 59.95)
AM I CDDOE at -40 Degree C
47
Optimized Setting
Key parameters
Current
Range
Optimized
Range
Open Force 16 Ib~20 Ib 16 Ib
Close Angle 2~6 6
Open Angle 70~85 85
AM I CD
48
Pilot Run Result
Sample
SampleMean
121110987654321
0
-50
-100
-150
-200
-250
-300
__
X=-64.9
UCL=7.3
LCL=-137.0
Before After
Xbar Chart of Data by Status
Tests performed with unequal sample sizes
3602401200-120-240-360
LSL USL
LSL -400
Target *
USL 400
Sample Mean -178.719
Sample N 260
StDev (Within) 65.2126
StDev (O v erall) 66.2567
Process Data
C p 2.04
C PL 1.13
C PU 2.96
C pk 1.13
Pp 2.01
PPL 1.11
PPU 2.91
Ppk 1.11
C pm *
O v erall C apability
Potential (Within) C apability
PPM < LSL 0.00
PPM > USL 0.00
PPM Total 0.00
O bserv ed Performance
PPM < LSL 345.38
PPM > USL 0.00
PPM Total 345.38
Exp. Within Performance
PPM < LSL 419.27
PPM > USL 0.00
PPM Total 419.27
Exp. O v erall Performance
Within
Overall
Process Capability of X_j2-17
3752501250-125-250-375
LSL USL
Process Data
Sample?N 29
StDev (Within) 47.18711
StDev (O v erall) 49.35170
LSL -400.00000
Target *
USL 400.00000
Sample Mean -64.88374
Potential (Within) C apability
C C pk 2.83
O v erall C apability
Pp 2.70
PPL 2.26
PPU 3.14
Ppk
C p
2.26
C pm *
2.83
C PL 2.37
C PU 3.28
C pk 2.37
O bserv ed Performance
PPM?<?LSL 0.00
PPM?>?USL 0.00
PPM?Total 0.00
Exp. Within Performance
PPM?<?LSL 0.00
PPM?>?USL 0.00
PPM?Total 0.00
Exp. O v erall Performance
PPM?<?LSL 0.00
PPM?>?USL 0.00
PPM?Total 0.00
Within
Overall
Process Capability of After
CPK: 1.18 CPK 2.37
One month pilot run result
shows before and after
resolution implemented Pin
bent position really improved !
AM I CD
49
Pilot run for FTY% tracking
After improvement on the first time yield%, we got this trend chart:
Pilot Run Result
TIPM Product AOI First Time Yield Daily Performance Trend
75.00%
80.00%
85.00%
90.00%
95.00%
100.00%
18-Jun-08
19-Jun-08
20-Jun-08
21-Jun-08
22-Jun-08
23-Jun-08
24-Jun-08
25-Jun-08
26-Jun-08
27-Jun-08
28-Jun-08
%
FTY% is higher than 96%, and
the average FTY value is 97%
TIPM Product AOI First Time Yield Daily Performance Trend
75.00%
80.00%
85.00%
90.00%
95.00%
100.00%
28-Oct-07
29-Oct-07
30-Oct-07
31-Oct-07
1-Nov-07
2-Nov-07
3-Nov-07
4-Nov-07
5-Nov-07
6-Nov-07
7-Nov-07
8-Nov-07
9-Nov-07
10-Nov-07
%
97%
May’08
YieldPerformance
86%
Nov’07
AM I CD
50
Add NP chart for test defect counts control in test bay eSPC function:
 Subgroup size =30
 upper limit =3
Add NP chart in
Control plan
AM I CDControl Plan Update
51
Standardization
and Documentation
Replication Opportunity
Replication Standardization
Solution Focus Pilot Site Company-wide Similar process
TIPM Product Line
TIPM Product Line
Continental/Tianj
in SMT Line
Continental/Tianjin
and other Continental
Electrical SMT Line
SMT Line and other
product line using
UMG Pin Mounting
Process
AM I CD
52
Updated the product handle procedure based on the corrective action and train
related operator and release the WI into system9000:
AM I CDLesson Learned and Training
53

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Example-BB Electronic

  • 1. Sponsor Peter Zhou Coach Peter Zhou Champion XXXXX Leader XXXX Team Member XXXX, XXXX XXXX ABCD Product AOI First Time Yield Improvement Oct 13, 2008 1
  • 3. CTQ & CTP Chart CTQ CCR Customer Issues VOC Pin Position return ppm No Positioning defects during AOI test (Meet Spec: +/- 0.4mm) Pin positioning problem will cause ALCOA assembly line problem TIPM board not reliable enough VOB Business Issues CBR CTP High scrap rate (14%FYI) Low output rate with high cost Improve FTY% by 10% at least from current 86% Reduce Misalignment defect rate Remark 1. Voice of customer and voice of business to be prioritized to those which are related to project objective 2. Use VOB or VOC or both depending on the project objectives AM I CD 3
  • 4. F/E Process AOI and Packing process ICT PC Board Loading Screen Print Component Placement Solder Reflow UMG Machine Loading 2nd UMG Machine Coating Machine Function test AOI Tester for Complaint pins AOI Tester for Tuning fork pins Finished Good Packing Shipping to customer Process Flow AM I CD 4
  • 5. Yield Current Performance – Pin Misalignment Y = Scrap Rate TIPM Product AOI First Time Yield Performance Trend 75.00% 80.00% 85.00% 90.00% 95.00% 100.00% 28-Oct-07 29-Oct-07 30-Oct-07 31-Oct-07 1-Nov-07 2-Nov-07 3-Nov-07 4-Nov-07 5-Nov-07 6-Nov-07 7-Nov-07 8-Nov-07 9-Nov-07 10-Nov-07 % Average 86% y = Pins Position Defect Rate AM I CD 5
  • 7. Team Charter Project Selection ID CCR Team Charter Build Team Map Process Financial Estimation Goal Statement Indicator Baseline Target Target Date Process Output 86% 96% Aug 1st 2008 Finance …… Saving 200k Aug 1st 2008 Subsequent Team Selection Sponsor/Champion: Scott Stryker/Chrysler, Angie Liu/Continental Team leader.: XXX 35% - Con% Team member: Michael Quality engineer 35% Wang Test engineer 10% Cao line leader 5% Han Quality engineer 5% Zhang Process engineer 5% White Production super. 5% Project Schedule Phase Start End Remark Define 11/30/2007 12/15/2007 Measure 12/15/2007 01/15/2008 Analyze 01/15/2008 04/28/2008 Improve 04/28/2008 05/30/2008 Control 05/30/2008 07/30/2008 Business Case Chrysler is the biggest customer for XXX factory. TIPM for Chrysler has been launched since end 2006. It is brand-new design product for Continental/Tianjin, which has two sides pin on the top and bottom PCB slide. As the pin straightness (perpendicular to the board) is very important to customer assembly process, therefore Tianjin factory install AOI test for inspection, but the first time yield FTY% can’t meet the target which is above 96%. Opportunity Statement If we can meet FTY target 96%, we can achieve saving at least 200k and meet customer requirement accordingly. On time delivery will also be assured. Project Scope Process Front End Process Start Point UMG Station End Point Packing process Scope Focus on Tianjin facility for TIPM product 7
  • 8. TIPM Product AOI First Time Yield Daily Performance Trend 65.00% 70.00% 75.00% 80.00% 85.00% 90.00% 95.00% 28-Oct-07 29-Oct-07 30-Oct-07 31-Oct-07 1-Nov-07 2-Nov-07 3-Nov-07 4-Nov-07 5-Nov-07 6-Nov-07 7-Nov-07 8-Nov-07 9-Nov-07 10-Nov-07 11-Nov-07 12-Nov-07 13-Nov-07 14-Nov-07 15-Nov-07 16-Nov-07 17-Nov-07 18-Nov-07 19-Nov-07 20-Nov-07 21-Nov-07 22-Nov-07 23-Nov-07 24-Nov-07 % 86% 88% Quick Win Opportunity Yield Improved to 88% by Implement three Opportunities from Quick Win AM I CD 8
  • 9. Pin Misalignment Position Complaint Bent pin TIPM Medium The complaint pin use the mechanical connective design, The tail of complain pin directly contact PCB through hole without any soldering. So they are more easily bent during normal production process. X Direction Y Direction Bent Pins AM I CD 9
  • 10. Pin Misalignment Position J4-37 J4-11 J2- 17 Bent Pin Most Happened Position Is On Then Edge of PCB Board AM I CD 10
  • 11. Pin Misalignment Position Position Pareto chart for Real bent pin The Pareto chart show the major bent pin issue are from the compliant pin and occurred more frequently at position J4-37 & J2-17. AM I CD 11
  • 12. MachineManpower Drop to The Ground Transportation Shock Material Tilted Pin Wrong Handling Mounting Machine Temperature Chamber ICT Machine Operator Touch Up Separation Machine Coating Machine Function Fixture Method Unsafe Package In Process Process Flow Pin Handing Temp Test Time Oven Temp, Time PCB Hole Tilt Pin Roller Defect Fishbone Diagram Pin Snap Slot Defect (Top Layer pin may be touched accidentally) Unsafe Package after AOI AM I CD Different Pin Position 12
  • 14. MachineManpower Drop to The Ground Transportation Shock Material Tilted Pin Wrong Handling UMG Mounting Machine Temperature Test ICT Machine Operator Touch Up Separation Machine Routing Machine Function Fixture Method Unsafe Package In Process Process Flow Pin Handing Temp Test Time Oven Temp, Time PCB Hole Tilt Pin Roller Defect Fishbone Diagram Pin Snap Slot Defect (Top Layer pin may be touched accidentally) Unsafe Package after AOI AM I CD Different Pin Position 14
  • 15. UMG Mounting Machine Temperature Test ICT Machine Operator Touch Up Routing Machine Unsafe Package In Process Pin Snap Slot Defect AM I CDScreening Function Fixture 15
  • 16. Data Collection Plan ID IPO Indicators Collect Data MSA Process Capability Remarks: Other data refers to additional information from stratification perspective. Performance measure (Y) Operational definition Data source and location Sample size Who will collect the data When will data be collected How will data be collected Other data that should be collected at the same time PIN Misalignment Rate Pin Straightness Requirement (+/- 0.4mm) AOI Tester 100% QA Nov 07 AOI Tester Process / Input (X) Operational definition Data source and location Sample size Who will collect the data When will data be collected How will data be collected Other data that should be collected at the same time Pin Position Measure Pin Position Jasper System 100% Jasper System Every Shift Jasper System - 16
  • 17. MSA Results MSA study on these test items To ensure the data are reasonable, we will do MSA study for AOI 1 tester These AOI Tester GR&R% are all less than 10% , acceptable! See the MSA_Demo.PPT for the GR&R% study demonstration. AM I CD 17
  • 18. Pin Misalignment distribution Check the TOP defect data distribution, The P-value is more than 0.05. It is normal distribution. But the mean value deviation to spec center, which need further analysis. 300225150750-75 Median Mean 11010510095908580 1st Q uartile 23.500 Median 99.500 3rd Q uartile 168.750 Maximum 308.000 84.558 107.163 82.113 113.000 88.722 104.768 A -Squared 0.72 P-V alue 0.061 Mean 95.861 StDev 96.076 V ariance 9230.529 Skewness -0.082150 Kurtosis -0.688619 N 280 Minimum -130.000 A nderson-Darling Normality Test 95% C onfidence Interv al for Mean 95% C onfidence Interv al for Median 95% C onfidence Interv al for StDev 95% Confidence Intervals Summary for Y_j2-17 -60-120-180-240-300-360 Median Mean -160-165-170-175-180-185-190 1st Q uartile -214.75 Median -169.50 3rd Q uartile -134.25 Maximum -21.00 -186.81 -170.63 -187.00 -163.00 61.01 72.50 A -Squared 0.70 P-V alue 0.066 Mean -178.72 StDev 66.26 V ariance 4389.96 Skewness -0.295591 Kurtosis -0.063028 N 260 Minimum -352.00 A nderson-Darling Normality Test 95% C onfidence Interv al for Mean 95% C onfidence Interv al for Median 95% C onfidence Interv al for StDev 95% Confidence Intervals Summary for X_j2-17 3002001000-100-200-300 Median Mean 1051009590858075 1st Q uartile 25.500 Median 84.000 3rd Q uartile 154.500 Maximum 369.000 76.747 100.411 75.485 104.545 93.773 110.569 A -Squared 0.72 P-V alue 0.058 Mean 88.579 StDev 101.477 V ariance 10297.505 Skewness -0.240282 Kurtosis 0.998535 N 285 Minimum -319.000 A nderson-Darling Normality Test 95% C onfidence Interv al for Mean 95% C onfidence Interv al for Median 95% C onfidence Interv al for StDev 95% Confidence Intervals Summary for X_j4-37 AM I CD 18
  • 19. IndividualValue 272421181512963 0 -200 -400 _ X=-181.7 UCL=2.6 LCL=-366.0 MovingRange 272421181512963 200 100 0 __ MR=69.3 UCL=226.4 LCL=0 Observation Values 252015105 0 -150 -300 -50-100-150-200-250-300-350 0-200-400 Within Overall Specs Within StDev 61.43289 C p 2.17 C pk 1.18 C C pk 2.17 O v erall StDev 67.56258 Pp 1.97 Ppk 1.08 C pm * Process Capability Sixpack of Before I Chart Moving Range Chart Last 25 Observations Capability Histogram Normal Prob Plot A D: 0.234, P: 0.775 Capability Plot Bent pin Analysis Cp/Cpk study for “Bent pin ”: CPK: 1.18 AM I CDCapability Analysis 19
  • 20. Key Process Characteristics Identified During Measurement Phase Shows That Four Stations Need To Be Focus On… AM I CDInitial Analysis UMG Mounting Machine Temperature Test/Chamber ICT Machine Operator Touch Up Routing Machine Unsafe Package In Process Pin Snap Slot Defect Function Fixture 20
  • 21. UMG Machine ICT Machine Routing Chamber & 3-temp. Testing Same Lot PCB Board Go Through Four Processes, Pin Position Data Were Taken To Analysis & Identify The Key Process AM I CDANOVA 21
  • 22. Bent Pin Analysis – Independent and Normality Test 300250200150100500-50 99 95 90 80 70 60 50 40 30 20 10 5 1 Measure UMG Percent Mean 119.8 StDev 66.91 N 30 AD 0.435 P-Value 0.281 Probability Plot of Measure UMG Normal p-values > 0.05, normal distribution! 30282624222018161412108642 250 200 150 100 50 0 Observation MeasureUMG Number of runs about median: 13 Expected number of runs: 16.0 Longest run about median: 8 Approx P-Value for Clustering: 0.132 Approx P-Value for Mixtures: 0.868 Number of runs up or down: 20 Expected number of runs: 19.7 Longest run up or down: 3 Approx P-Value for Trends: 0.559 Approx P-Value for Oscillation: 0.441 Run Chart of Measure UMG 30282624222018161412108642 300 200 100 0 -100 Observation MeasureICT Number of runs about median: 17 Expected number of runs: 16.0 Longest run about median: 4 Approx P-Value for Clustering: 0.645 Approx P-Value for Mixtures: 0.355 Number of runs up or down: 21 Expected number of runs: 19.7 Longest run up or down: 3 Approx P-Value for Trends: 0.724 Approx P-Value for Oscillation: 0.276 Run Chart of Measure ICT 30282624222018161412108642 250 200 150 100 50 0 Observation MeasureRouter Number of runs about median: 13 Expected number of runs: 16.0 Longest run about median: 6 Approx P-Value for Clustering: 0.132 Approx P-Value for Mixtures: 0.868 Number of runs up or down: 22 Expected number of runs: 19.7 Longest run up or down: 2 Approx P-Value for Trends: 0.851 Approx P-Value for Oscillation: 0.149 Run Chart of Measure Router 3002001000-100 99 95 90 80 70 60 50 40 30 20 10 5 1 Measure ICT Percent Mean 125 StDev 66.76 N 30 AD 0.378 P-Value 0.385 Probability Plot of Measure ICT Normal p-values > 0.05, normal distribution! 250200150100500 99 95 90 80 70 60 50 40 30 20 10 5 1 Measure Router Percent Mean 116.5 StDev 54.66 N 30 AD 0.405 P-Value 0.332 Probability Plot of Measure Router Normal p-values > 0.05, normal distribution! All 4 p-values > 0.05, data are independent! AM I CDData Analysis 22
  • 23. ANOVA For All Related Process Data Measure 3-tempMeasure ICTMeasure RouterMeasure UMG 300 200 100 0 -100 Boxplot of Measure UMG, Measure Router, Measure ICT, Measure 3-temp Process 95% Bonferroni Confidence Intervals for StDevs Measure Router Measure ICT Measure 3-temp Measure UMG 10090807060504030 Bartlett's Test 0.394 Test Statistic 7.43 P-Value 0.059 Levene's Test Test Statistic 1.00 P-Value Test for Equal Variances for Measure Measure 3 –Temp caused the most difference (Mean Shift a lot as compared with the other 3 process). Equal Variance showed at the test. AM I CD 23
  • 24. Why the 3-temp test process contribute the most Put unit into the trays Put into cold chamber Cold temperature function test Put unit into the trays Put into hot chamber Room temperature function test AOI test equipment Input From Front Line To packing station ? 3 – Temp Test Steps Breakdown AM I CDTemperature Inspection 24
  • 25. MachineManpower Transportation Shock Material Tilted Pin Wrong Handling High Temp Chamber +85 Degree C Function Test Fixture Low Temp Chamber -40 Degree C Operator Touch Up Conveyor Method Unsafe Package In Process Process Flow Temperature PCB Hole Tilt Pin Roller Defect Fishbone Diagram Pin Snap Slot Defect AM I CD 25
  • 26. SOV Chamber Measure 8540 -50 -100 -150 -200 -250 Fixture 1 2 Multi-Vari Chart for Measure by Fixture - Chamber Chamber 1 -40 Degree C 1 Chamber Fixture Chamber 2 +85 Degree C 2 1 2 Conduct Source Of Variation Studies (SOV) AM I CD 26
  • 27. UMG Mounting Machine Temperature Test/Chamber ICT Machine Operator Touch Up Routing Machine Unsafe Package In Process Pin Snap Slot Defect Screening Chamber Temperature Function Fixture AM I CD Function Fixture Chamber Measure 8540 -50 -100 -150 -200 -250 Fixture 1 2 Multi-Vari Chart for Measure by Fixture - Chamber 27
  • 28. Fixture 1 Fixture 2 Comparison Mfg Date Same Same Maintenance Schedule Same Same Open Angle 85 degree 70 degree Operation Force 16 Ib 20 Ib Close Angle 6 degree 2 degree Operator A B Usage Rate Same Same AM I CDSetting Comparison 28
  • 29. Objective of DOE Condition I: -45 Degree C Condition II: 85 Degree C Level 1 Level 2 Level 1 Level 2 Open Angle 85 degree 70 degree 85 degree 70 degree Open Force 16 Ib 20 Ib 16 Ib 20 Ib Close Angle 6 degree 2 degree 6 degree 2 degree In order to minimize the pin bent possibility, plan to design an experiment to optimize all the factors… AM I CD 29
  • 30. DOE at -40 Degree C AM I CD 30
  • 31. Step 1. View Data >> Data Is Normal ------ P Value > 0.05 >> No Outlier Point >> No Apparent Upward or Downward Trend -60-80-100-120-140-160-180 Median Mean -100-110-120-130-140-150 A nderson-Darling Normality Test V ariance 1161.42 Skewness 0.311887 Kurtosis -0.532572 N 18 Minimum -179.91 A -Squared 1st Q uartile -151.12 Median -130.44 3rd Q uartile -96.99 Maximum -61.44 95% C onfidence Interv al for Mean -144.65 0.21 -110.75 95% C onfidence Interv al for Median -149.42 -104.81 95% C onfidence Interv al for StDev 25.57 51.09 P-V alue 0.825 Mean -127.70 StDev 34.08 95% Confidence Intervals Summary for Measure -40 RunOrder Measure-40 20151050 -50 -75 -100 -125 -150 -175 CenterPt 0 1 Scatterplot of Measure -40 vs RunOrder AM I CDDOE at -40 Degree C 31
  • 32. Step 2 and 3. Create and Fit Model Term Standardized Effect ABC BC AB AC B C A 121086420 2.23 Factor Name A O pen A ngle B C lose A ngle C O peration Force Pareto Chart of the Standardized Effects (-40 Degree) (response is Measure -40, Alpha = .05) Factor Open Angle, Close Angle, Operation Force and interaction between Open Angle and Operation Force are signification a = 0.05 AM I CDDOE at -40 Degree C 32
  • 33. Standardized Effect Percent 151050-5-10 99 95 90 80 70 60 50 40 30 20 10 5 1 Factor Name A O pen A ngle B C lose A ngle C O peration Force Effect Type Not Significant Significant AC C B A Normal Probability Plot of the Standardized Effects (response is Measure -40, Alpha = .05) Normal probability plot of effects also shows the same effects to be significant. AM I CDDOE at -40 Degree C 33
  • 34. Open A ngle 642 201816 -100 -150 -200 Close A ngle -100 -150 -200 Operation Force Open 77.5 Center 85.0 Corner Angle Point Type 70.0 Corner Close 4 Center 6 Corner Angle Point Type 2 Corner Interaction Plot (data means) for Measure -40 MeanofMeasure-40 85.077.570.0 -100 -120 -140 -160 642 201816 -100 -120 -140 -160 Open Angle Close Angle Operation Force Point Type Corner Center Main Effects Plot (data means) for Measure -40 These plots are consistent with our previous conclusions about the effects. AM I CDDOE at -40 Degree C 34
  • 35. ANOVA indicates that at least one main effect is significant at a = 0.05. It also indicates that curvature is NOT significant. AM I CDDOE at -40 Degree C 35
  • 36.  Estimated effects and coefficients indicate that Open Angle, Close Angle, Operation Force and interaction Open Angle*Operation Force are significant at a = 0.05. The results agreed with the earlier graphs  R-Sq = 96.38% R-Sq(adj) = 93.85% AM I CDDOE at -40 Degree C 36
  • 37. Step 4. Perform Residual Diagnostics  The residual vs fitted (predicted) value and residual vs run order plots do not show any patterns or trends, and do not indicate any violations of the assumptions. The normal probability plot indicates residuals are normally distributed Residual Percent 20100-10-20 99 90 50 10 1 Fitted ValueResidual -50-100-150-200 10 0 -10 Residual Frequency 151050-5-10-15 4.8 3.6 2.4 1.2 0.0 Observation Order Residual 18161412108642 10 0 -10 Normal Probability Plot of the Residuals Residuals Versus the Fitted Values Histogram of the Residuals Residuals Versus the Order of the Data Residual Plots for Measure -40 AM I CDDOE at -40 Degree C 37
  • 38. Open Angle Residual 868482807876747270 15 10 5 0 -5 -10 Residuals Versus Open Angle (response is Measure -40) Close Angle Residual 65432 15 10 5 0 -5 -10 Residuals Versus Close Angle (response is Measure -40) The residual vs each X do not show any pattern Operation Force Residual 2019181716 15 10 5 0 -5 -10 Residuals Versus Operation Force (response is Measure -40) AM I CDDOE at -40 Degree C 38
  • 39. Step 6. Remove non-significant terms / Refit reduced model Remove the non-significant terms  ANOVA indicates at least one main effect and at least one two-factor interactions are significant at a = 0.05  Also, curvature is not significant. Step 5. Check for possible transformations. AM I CDDOE at -40 Degree C 39
  • 40. Term Standardized Effect AC B C A 121086420 2.16 Factor Name A O pen A ngle B C lose A ngle C O peration Force Pareto Chart of the Standardized Effects (response is Measure -40, Alpha = .05)  P-values show that all effects in the model are significant.  The value of R-Sq and R-Sq(adj) has decreased Standardized Effect Percent 1050-5-10 99 95 90 80 70 60 50 40 30 20 10 5 1 Factor Name A O pen A ngle B C lose A ngle C O peration Force Effect Type Not Significant Significant AC C B A Normal Probability Plot of the Standardized Effects (response is Measure -40, Alpha = .05) Reduced Model Full Model R Square 94.53% 96.38% R Square-Adj 92.84% 93.85% AM I CDDOE at -40 Degree C 40
  • 41. Residual Diagnostics Residual Percent 20100-10-20 99 90 50 10 1 Fitted Value Residual -50-100-150-200 20 10 0 -10 -20 Residual Frequency 20151050-5-10-15 4 3 2 1 0 Observation Order Residual 18161412108642 20 10 0 -10 -20 Normal Probability Plot of the Residuals Residuals Versus the Fitted Values Histogram of the Residuals Residuals Versus the Order of the Data Residual Plots for Measure -40  The residual vs fitted (predicted) value and residual vs run order plots do not show any patterns or trends, and do not indicate any violations of the assumptions. The normal probability plot indicates residuals are normally distributed AM I CDDOE at -40 Degree C 41
  • 42. Open Angle Residual 868482807876747270 20 10 0 -10 -20 Residuals Versus Open Angle (response is Measure -40) Close Angle Residual 65432 20 10 0 -10 -20 Residuals Versus Close Angle (response is Measure -40) Operation Force Residual 2019181716 20 10 0 -10 -20 Residuals Versus Operation Force (response is Measure -40) The residual vs each X do not show any pattern AM I CDDOE at -40 Degree C 42
  • 43. Model is adequate, therefore we can use it for predicting future responses at specified settings of control factors. Chosen Model for the Fixture in uncoded units is: Y (Pin Position) = 597.769 – 6.96360(Open Angle) + 7.18076(Close Angle) - 60.4389(Operation Force) + 0.628457(Open Angle)*(Operation Force) Step 7. Choose Improved Model AM I CDDOE at -40 Degree C Pin Position Specification: 0 +/-0.4mm 43
  • 44. Predict Pin Position at the following level of X’s  Open Angle = 85 degree  Close Angle = 6 degree  Operation Force = 16 lb AM I CDDOE at -40 Degree C 44
  • 45. MeanofMeasure-40 85.077.570.0 -100 -120 -140 -160 642 201816 -100 -120 -140 -160 Open Angle Close Angle Operation Force Point Type Corner Center Main Effects Plot (data means) for Measure -40 Open A ngle 642 201816 -100 -150 -200 Close A ngle -100 -150 -200 Operation Force Open 77.5 Center 85.0 Corner Angle Point Type 70.0 Corner Close 4 Center 6 Corner Angle Point Type 2 Corner Interaction Plot (data means) for Measure -40 Step 8. Interpret Chosen Model AM I CDDOE at -40 Degree C 45
  • 46. 6 ure -40 -120 4 -90 -60 Close Angle70 75 280 85 Open Angle Hold Values Operation Force 16 Surface Plot of Measure -40 vs Close Angle, Open Angle Open Angle CloseAngle -70 -80 -90 -100 -110 -120 -130 8482807876747270 6 5 4 3 2 Hold Values Operation Force 16 Contour Plot of Measure -40 vs Close Angle, Open Angle Contour plot shows at what different settings of X’s can achieve the target Y. It also shows that the direction of meeting Y requirement. (0+/-0.4mm) AM I CDDOE at -40 Degree C Look For Maximum 46
  • 47. Step 9. Implement New Process/Make Confirmation Runs  Plan to run 10pcs confirmation runs  Predict response y=-63.7694 at the optimum settings above  Compute the appropriate confidence interval of prediction based on the number of confirmation test run.  Conduct 10 confirmation runs. Calculated average of the confirmation runs falls within the calculated confidence interval. (Average 10 confirmation run = - 59.95) AM I CDDOE at -40 Degree C 47
  • 48. Optimized Setting Key parameters Current Range Optimized Range Open Force 16 Ib~20 Ib 16 Ib Close Angle 2~6 6 Open Angle 70~85 85 AM I CD 48
  • 49. Pilot Run Result Sample SampleMean 121110987654321 0 -50 -100 -150 -200 -250 -300 __ X=-64.9 UCL=7.3 LCL=-137.0 Before After Xbar Chart of Data by Status Tests performed with unequal sample sizes 3602401200-120-240-360 LSL USL LSL -400 Target * USL 400 Sample Mean -178.719 Sample N 260 StDev (Within) 65.2126 StDev (O v erall) 66.2567 Process Data C p 2.04 C PL 1.13 C PU 2.96 C pk 1.13 Pp 2.01 PPL 1.11 PPU 2.91 Ppk 1.11 C pm * O v erall C apability Potential (Within) C apability PPM < LSL 0.00 PPM > USL 0.00 PPM Total 0.00 O bserv ed Performance PPM < LSL 345.38 PPM > USL 0.00 PPM Total 345.38 Exp. Within Performance PPM < LSL 419.27 PPM > USL 0.00 PPM Total 419.27 Exp. O v erall Performance Within Overall Process Capability of X_j2-17 3752501250-125-250-375 LSL USL Process Data Sample?N 29 StDev (Within) 47.18711 StDev (O v erall) 49.35170 LSL -400.00000 Target * USL 400.00000 Sample Mean -64.88374 Potential (Within) C apability C C pk 2.83 O v erall C apability Pp 2.70 PPL 2.26 PPU 3.14 Ppk C p 2.26 C pm * 2.83 C PL 2.37 C PU 3.28 C pk 2.37 O bserv ed Performance PPM?<?LSL 0.00 PPM?>?USL 0.00 PPM?Total 0.00 Exp. Within Performance PPM?<?LSL 0.00 PPM?>?USL 0.00 PPM?Total 0.00 Exp. O v erall Performance PPM?<?LSL 0.00 PPM?>?USL 0.00 PPM?Total 0.00 Within Overall Process Capability of After CPK: 1.18 CPK 2.37 One month pilot run result shows before and after resolution implemented Pin bent position really improved ! AM I CD 49
  • 50. Pilot run for FTY% tracking After improvement on the first time yield%, we got this trend chart: Pilot Run Result TIPM Product AOI First Time Yield Daily Performance Trend 75.00% 80.00% 85.00% 90.00% 95.00% 100.00% 18-Jun-08 19-Jun-08 20-Jun-08 21-Jun-08 22-Jun-08 23-Jun-08 24-Jun-08 25-Jun-08 26-Jun-08 27-Jun-08 28-Jun-08 % FTY% is higher than 96%, and the average FTY value is 97% TIPM Product AOI First Time Yield Daily Performance Trend 75.00% 80.00% 85.00% 90.00% 95.00% 100.00% 28-Oct-07 29-Oct-07 30-Oct-07 31-Oct-07 1-Nov-07 2-Nov-07 3-Nov-07 4-Nov-07 5-Nov-07 6-Nov-07 7-Nov-07 8-Nov-07 9-Nov-07 10-Nov-07 % 97% May’08 YieldPerformance 86% Nov’07 AM I CD 50
  • 51. Add NP chart for test defect counts control in test bay eSPC function:  Subgroup size =30  upper limit =3 Add NP chart in Control plan AM I CDControl Plan Update 51
  • 52. Standardization and Documentation Replication Opportunity Replication Standardization Solution Focus Pilot Site Company-wide Similar process TIPM Product Line TIPM Product Line Continental/Tianj in SMT Line Continental/Tianjin and other Continental Electrical SMT Line SMT Line and other product line using UMG Pin Mounting Process AM I CD 52
  • 53. Updated the product handle procedure based on the corrective action and train related operator and release the WI into system9000: AM I CDLesson Learned and Training 53