1. DFMA Paradigms as Applied to the Swingline 747 Stapler
Presented by,
Team Alpha

2. Overview Introduction to DFMA. Stapler Properties/Specifications.
Material Selection.
Manufacturing Processes.
Assembly Analysis.
Conclusions.
Questions.

3. INTRODUCTION

4. Product Specifications

5. DFMA as Applied For Material Selection

6. MATERIAL SELECTION

7. Intuitive Method For Material Selection
First best material
Same Material For Same Part
Problem solving material selection
Searching material selection
The material is selected among the few materials
the design engineer is familiar with.
A property has given rise to problems. A new material
is chosen in the same group of material with a higher
value of the property.
The designer takes more or less randomly into
account one requirement at the time.

8. Drawbacks with Intuitive Methods
Important requirements have often given rise to failures in operation.
First solution at hand is taken which is not very likely to be good solution.
The solution is typically far from the optimum giving the part poor competitiveness.

9. Major Material Properties Which Influence Material Selection
Young's Modulus and Specific Stiffness
Strength
Toughness
Density
Cost

11. Manufacturing Process

12. Which Manufacturing Paradigms to Use

13. Market
size
Large
Market
Type
Market
niches
Mass production
static
Several
Yes
Product
improvement No
Concurrent
Evolving product
family
Concurrent
Product
family

14. Manufacturing Processes

15. The Upper Arm Step: 1

16. The Upper Arm Step: 2

17. The Upper Arm Step: 3

18. The Upper Arm
Original Design
Modified Design

19. Staple Slide
Original Design
Modified Design

20. Upper Staple Guide
Original Design
Modified Design

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22. Assembly Process

23. Handling Times Data Table

24. CONCLUSIONS DFMA Paradigms Material Selection Manufacturing Assembly
Overall Summary

25. Questions