dfma paradigms as applied to the swingline 747 stapler n.
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DFMA Paradigms as Applied to the Swingline 747 Stapler - PowerPoint PPT Presentation


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DFMA Paradigms as Applied to the Swingline 747 Stapler. Presented by, Team Alpha. Overview . Introduction to DFMA. Stapler Properties/Specifications. Material Selection. Manufacturing Processes. Assembly Analysis. Conclusions. Questions. INTRODUCTION. Product Specifications.

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Presentation Transcript
overview
Overview
  • Introduction to DFMA.
  • Stapler Properties/Specifications.
  • Material Selection.
  • Manufacturing Processes.
  • Assembly Analysis.
  • Conclusions.
  • Questions.
intuitive method for material selection
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.

drawbacks with intuitive methods
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.
major material properties which influence material selection
Major Material Properties Which Influence Material Selection
  • Young's Modulus and Specific Stiffness
  • Strength
  • Toughness
  • Density
  • Cost
slide13

Market

size

Large

Market

Type

Market

niches

Mass production

static

Several

Yes

Product

improvement

No

Concurrent

Evolving product

family

Concurrent

Product

family

slide18

The Upper Arm

Original Design

Modified Design

slide19

Staple Slide

Original Design

Modified Design

slide20

Upper Staple Guide

Original Design

Modified Design

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