DFMA Stapler

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

description

DFMA for a stapler

Transcript of DFMA Stapler

Page 1: DFMA Stapler

DFMA Paradigms as DFMA Paradigms as Applied to the Applied to the

Swingline 747 StaplerSwingline 747 StaplerPresented by,Presented by,

Team AlphaTeam Alpha

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Overview Overview

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

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INTRODUCTIONINTRODUCTION

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Product SpecificationsProduct Specifications

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DFMA as Applied For DFMA as Applied For Material SelectionMaterial Selection

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MATERIAL SELECTIONMATERIAL SELECTION

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Intuitive Method For Intuitive Method For Material SelectionMaterial 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 intoaccount 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 Major Material Properties Which Properties Which Influence Material Influence Material

SelectionSelection Young's Modulus and Specific Young's Modulus and Specific

StiffnessStiffness StrengthStrength ToughnessToughness Density Density CostCost

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Manufacturing Manufacturing ProcessProcess

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Which Manufacturing Paradigms to Use

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static

Large

Market size

Market Type Mass production

Marketniches

Several

Productimprovement

Yes No

ConcurrentEvolving product family

Concurrent Product family

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Manufacturing Processes

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The Upper ArmThe Upper ArmStep: 1Step: 1

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The Upper ArmThe Upper ArmStep: 2Step: 2

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The Upper ArmThe Upper ArmStep: 3Step: 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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Comparision of Manufacturing Cost

0

5000

10000

15000

20000

25000

Upp

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Original Design

Modified Design

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Assembly ProcessAssembly Process

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Handling Times Data Table

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CONCLUSIONSCONCLUSIONS

DFMA ParadigmsDFMA Paradigms Material SelectionMaterial Selection Manufacturing Manufacturing AssemblyAssembly Overall SummaryOverall Summary

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QuestionsQuestions