Team 04 Introduction Prototypes Circuit System Mechanical Design - - PowerPoint PPT Presentation

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Team 04 Introduction Prototypes Circuit System Mechanical Design - - PowerPoint PPT Presentation

Apr 07, 2023 408 likes •565 views

Team 04 Introduction Prototypes Circuit System Mechanical Design Conclusion 1 of 12 Team Maddie Collins Daniel Dick Daniel Wharton Kyle Mailhot Introduction Prototypes Circuit System Mechanical Design

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SLIDE 1

Team 04

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 2

Team

Maddie Collins Daniel Dick Daniel Wharton Kyle Mailhot

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 3

Contents

Introduction Design Description

» Circuit System » Test Bed » Mechanical System

Prototype Testing Final Design

» Description » Results

Business and Market Analysis Conclusion

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 4

Introduction

Problem » High number of annual shop accidents Key Design Considerations

» Size of Design » Stopping Time and Depth of Cut » Electrical and Mechanical Components » Safety and Test Bed Development Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 5

Circuit System – Firing Circuit

Capacitor Clip for Wire Manual Switch Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 6

Circuit System – Sensing Circuit

Potentiometer Transistor Comparitor Op Amp Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 7

Test Bed

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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Rev 01 Rev 02

Rev 03

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SLIDE 8

Prototype Testing

Test 1

  • Housing Design
  • Brake Design
  • Firing Circuit

Test 2

  • New Housing

Design

  • Firing Circuit

Modifications

Test 3

  • Thinner Brake Design
  • Sensing Circuit and Firing Circuit Combined
  • Shaft Modifications

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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Test 4

  • Annealed Brake
  • Modified Circuitry
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SLIDE 9

Final Design

Inside Brake Housing Outside Brake Housing Aluminum Brake Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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SLIDE 10

Mechanical System

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SLIDE 11

Final Design

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SLIDE 12

Final Design

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SLIDE 13

Final Design

Results

» Mechanical Stopping Time of 0.003 seconds » Depth of 3 mm Cut in Hot Dog » Force Down 15 lbf (Deflected 2 inch in test)

Reflections

» Successful mechanical design early on » Sensing circuit difficulties

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SLIDE 14

Business and Market Analysis

Item Cost per Unit

Total Circuitry System $ 34.31 Total Mechanical System $ 12.20 Labor and Installation Cost $ 97.50 Overhead Cost $ 61.72 Total (Breakeven Cost) $ 205.73

Business Analysis Assumptions

  • Units are made with
  • ur design
  • 1000 units are made

per year

  • $15/hr labor wage
  • 30% overhead

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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Market Analysis

  • High end Miter Saws
  • Business or learning

applications

  • OSHA estimates a cost of

$130,000 to a business for an amputation*

  • Average index finger cost

$24,474**

*http://www.sawstop.com/why-sawstop/accident-victims **http://www.na.kccustomerportal.com/Documents/Uploa d/Application/2811/Learning%20Center/Article/K2750_0 9_01_If_You_Think_Safety_is_Expensive_FINAL.pdf https://projects.propublica.org/graphics/workers- compensation-benefits-by-limb

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SLIDE 15

Questions?

Special Thanks to:

  • Professor VanAntwerp – team advisor
  • Professor Michmerhuizen – circuit design
  • Chuck Holwerda – electronics assistance
  • Phil Jasperse – shop supervision

Introduction ○ Prototypes ○ Circuit System ○ Mechanical Design ○ Conclusion

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