DFMA Paradigms as Applied to the Swingline 747 Stapler

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DFMA Paradigms as Applied to the Swingline 747
Stapler

• Presented by,
• Team Alpha

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Overview

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

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INTRODUCTION
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Product Specifications
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DFMA as Applied For Material Selection
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MATERIAL SELECTION
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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.

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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.

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Major Material Properties Which Influence
Material Selection

• Young's Modulus and Specific Stiffness
• Strength
• Toughness
• Density
• Cost

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(No Transcript)
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Manufacturing Process
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Which Manufacturing Paradigms to Use
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Market size
Large
Market Type
Market niches
Mass production
static
Several
Product improvement
Yes
No
Concurrent Evolving product family
Concurrent Product family
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Manufacturing Processes
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The Upper ArmStep 1
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The Upper ArmStep 2
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The Upper ArmStep 3
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The Upper Arm
Original Design
Modified Design
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Staple Slide
Original Design
Modified Design
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Upper Staple Guide
Original Design
Modified Design
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(No Transcript)
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Assembly Process
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Handling Times Data Table
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CONCLUSIONS

• DFMA Paradigms
• Material Selection
• Manufacturing
• Assembly
• Overall Summary

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Questions