3D Metal Printer Senior Capstone @ UC Berkeley
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Transcript of 3D Metal Printer Senior Capstone @ UC Berkeley
![Page 1: 3D Metal Printer Senior Capstone @ UC Berkeley](https://reader033.fdocuments.net/reader033/viewer/2022061217/54b4302f4a795972298b4607/html5/thumbnails/1.jpg)
Andre FaroniRory Timar Josh Stroud
ME 102B Final Presentation:
Building a 3D Metal Printer
4/29
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Overview
Design Process
What + WhyOvervie
wWrapup Q+A
Goal: explore printing metal parts
with weldingResult: Lots of trial and
error
Here’s what we learned…
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Why a 3D Metal Printer?
Design Process
What + WhyOvervie
wWrapup Q+A
?
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First Prototype Doesn’t Work
What + WhyOvervie
wWrapup Q+A
Design Process
Focus on learning about + prototyping TIG welding
circuitry
Tackle the
riskiest part first!
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Iterating on Power Circuit
Car Ignition
Coil
Factory HV Caps
DIY Transformer to Spec
Flyback Transform
er
DIY Capacitor
Salvaged Transform
er
High Voltage Arc Ignition
What + WhyOvervie
wWrapup Q+A
Design Process
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Iterating on Power CircuitHF Current
Control
`
Continuous Current Power Supply
HV Capacitor “Zap” Array
Jewelry Micro-Tig Welding
Insight!
What + WhyOvervie
wWrapup Q+A
Design Process
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Beefier Microcontroller Powers Closed-Loop Control
What + WhyOvervie
wWrapup Q+A
Design Process
Arduino Uno16 MHz
ARM Cortex M-4168 MHz
HF Current Control
PI current control
Capacitor Charging
P voltage control
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Misadventures in Startup Land
Free Ventures
What + WhyOvervie
wWrapup Q+A
Design Process
We want this!
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Final Prototype
Overview
Wrapup Q+ADesign Process
What + Why
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System Overview
What + WhyOvervie
wWrapup Q+A
Design Process
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System Operation
Overview
Wrapup Q+ADesign Process
What + Why
1 2 3
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System Operation
Design Process
Overview
Wrapup Q+AWhat +
Why
1 2 3
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System Operation
Design Process
Overview
Wrapup Q+AWhat +
Why
2 31
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Microcontroller Control
Design Process
Overview
Wrapup Q+AWhat +
Why
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Experimental Data
Design Process
Overview
Wrapup Q+AWhat +
Why
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Lessons Learned
• Know when to model, know when to build
• Invention = SMART trial and error.
Design Process
What + WhyOvervie
wQ+A
Wrapup
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WrapupGoal: a 3D metal printer for the masses
Insight: Combine TIG welding practice with existing 3D printer tech
Final Result: an experimental platform to test + tune our welding process
Design Process
What + WhyOvervie
wWrapu
pQ+A
Biggest Lesson: Even when the work you set for yourself wasn’t finished, you’ve come too far to
say it’s worth coming back
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Timeline in Janurary
Design Process
What + WhyOvervie
wWrapup Q+A
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Image sources
Tig welder: http://cfnewsads.thomasnet.com/images/large/025/25335.jpg
Microtig welder: http://www.millerwelds.com/education/articles/images/Fig.-7-Micro-TIG1lr.jpg
Arduino: http://arduino.cc/en/pub/skins/arduinoWide_SSO/slider_home/h_01.jpg
ARM: http://d3dpuk1s8nsuve.cloudfront.net/wp-content/uploads/2012/05/STM32-F0-microcontroller-series.jpg
Thomas edison: http://2.bp.blogspot.com/--wbqi2ucw14/UhoodohiWiI/AAAAAAABxOk/KxVcgjYLeiY/s320/Entrepreneur%E2%80%99s+Curse.jpg
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Misadventures in Startup Land
Free Ventures
What + WhyOvervie
wWrapup Q+A
Design Process
We want this!