DFA-DFM Analysis Summary
Date Product Part No.
8/30/2000
Rev.
1
Used on Part No.
Final Assembly
Number of Sub-Assemblies Team Leader Team Members 1 2 3 4 5 6 7 8 Name Name Name Name Name Name Name Name Name Origination Design Manufacturing Quality Finance Purchasing Suppliers 9 10 11 12 13 14 15 16 Name Name Name Name Name Name Name Name Name Origination
DFA - Results
(Configuration Optimization)
SubAssembles Theoretical Min. Parts Standard Parts Mistake Proofing Issues Handling Issues Insertion Issues Further Processing Items
Part Count
Practical Min. Parts
Original/Optimized Configuration Original Configuration Theoretical Part Efficiency Mistake Proofing Index
15
2
4
11
7 Further Processing Index
5
7 Practical Part Efficiency
0.1 Target
3.5 <1
Handling Index
2.5 <1
Insertion Index
3.5 <1
0.3
?
<1
DFM - Results
(Production Readiness) DFA Completed 01/22/00
SubAssembly # of Critical Parameters Process Capability Study Completed Percent Capability Studies Completed Number of Total Tooling Total Tooling Tolerance Analysis Required Available Performed Percent of Tooling Completed Percent of Drawings Completed
Design Efficiency 2 21 9 42.86% Number of different Mounting and Fastening Hardware Types Screws 1 Nuts 1 C Washers, Lock 1 A 1 D Washers, Flat 1 B 1 E
5 1 1 1
4
2
50.00%
20.00%
Assembly Sigma for Assembly RTY Parts Studied 1.333 43.62%
Control Signature
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Assembly Name
Ballpoint pen Mistake Proofing
Assemble wrong part / omit part Assembled part wrong way around Theoretical Min. Part Nest / Tangle / Stick together Not Standard or non shared part Practical Min. Parts Part Cost (1, 3, 9)
Team Leader
Parts
Handling
Hold down required Not easy to see correct orientation Handling aid / two hands Flexible/ Fragile / Sharp / Slippery Difficult to align / locate
Insertion
Not from above / not straight line Obstructed access / visibility Resistance to insertion
Further Processing
Screw / Drill / Twist / Rivet / Bend / Crimp Weld / Solder / Glue Paint / Lube / heat / Apply liquid or gas Test / Measure / Adjust Re-orientate workpiece
ID Number
Quantity
Part Description
1 2 3 4 5
1 1.1 1.2 1.3 1.4 1.5 2 2.1 2.2 2.3 3 3.1 3.2 3.3 3.4
6 7 8 9 10 11 12 13 14 15 Total Parts 15 Sub-Assemblies 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Ink cartridge Tip interface Barrel Tip Ink cap Ball bearing Bottom End Tip cover Spring Grip Activation End Upper barrel Clip Plunger Ratcheting mechanism
Y Y N N Y N N N N N N N
Y Y Y N Y Y N N N N N N
Y Y Y Y Y Y Y Y Y Y Y Y
1 1 1 1 1 1 1 1 1 1 1 1
N N N Y N N Y Y N N N Y
N N N N N N N Y N N Y Y
N N N N N N Y N N Y N N
N N Y Y Y N N N N N N N
N N N N N N N N N N N N
N N N N N N N N N N N N
N N N N Y N N N N N N N
N Y N N N Y N N N Y N N
N N N N N N N N N N N N
Y N N N Y N N Y N Y N N
Totals
2
4 11 11 Categories Totals
4 7
3
2
3 5
0
0
1
2
0 7
4
0
0
0
0 0
0
0
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Implementation
1 2 3 4 5 Long Term 6 7 8 9 10 1 2 3 4 5 Medium Term 6 7 8 9 10 1 2 3 4 5 Short Term 6 7 8 9 10 Low Medium High
Risk
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http://templatestaff.com Assembly Name
# of Critical Parameters Process Capability Study Completed SubAssembly Process Standard Deviation
Team Leader Standard Material Number of Processin g Steps Y 4 2 1
Tooling Available for Data Critical Tolerances Tooling Required RTY estimate
Part Number
Quality
Part Description
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 1.1 1.2 1.3 1.5 2.1 2.2 2.3 3 3.1 3.2 3.3 3.4
1 1 1 1 1 1 1 1 1 1 1 1 1
Ink cartridge Tip interface Tip Ink cap Ball bearing Tip cover Spring Grip Activation End Upper barrel Clip Plunger Ratcheting mechanism
1
3 3 3
Y
0.001
0 66.043%
Y Y
Y
1 3 3 3
Y
0.0005
0 99.998%
Y Y
Y
3 Totals 13 2 21
Y 9
0.001
0 66.043% 43.616%
Hardware Analysis
Screws No. 1 2 3 4 5 1 2 3 4 Size 1/4-20 UNC-2B x 1.5 lg Material CRES
Drawing Readiness
Plating Head Type Qty Drawing Needed Drawings Completed Phil 3 25 5 Percent Complete 20.00%
Washers, Flat
1/4 "
CRES
6
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Washers, Lock
1 2 3 4 1 2 3 4 5 6 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
1/4" split
CRES
3
Nuts
1/4-20 unc-2B
Hex Size
3
A
1/-20UNC-25 PEM STUD
CRES
6
B
t
C
t
D
t
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E
1 2 3 4 5
t
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