P10551 - Nano-ink Deposition System System Level Design Review
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Transcript of P10551 - Nano-ink Deposition System System Level Design Review
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P10551 - Nano-ink Deposition SystemSystem Level Design Review
Eric Hettler - MEWilliam Gallagher - ISE
Christopher Mieney - MEGregory Ryan - ME
Joseph Cole - EE
FAB AMERICA
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Design Review AgendaProject DescriptionSystem ArchitectureFinal Design SpecificationsProject StatusSummary of Test ResultsGoing ForwardQuestions
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Project Overview Fab@Home open-source
architecture Modify an existing Fab@Home
deposition system to mix materials and deposit layer by layer on print surface.
A UV curable resin will be dyed to serve as a medium to demonstrate the printing of multiple materials.
Interface with software
http://fabathome.org
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Key Engineering SpecificationsSpecification Description of Metric Unit of Measure Acceptable Value Desired Value
Can Print Multicolor Number of Base Colors # 3 3
Can Print Viscous Material Viscosity of resin cP > 165 > 300
XY Repeatability Mean/standard deviation of XY locations of deposited materials mm TBD TBD
Z Repeatability Mean/standard deviation of layer thicknesses mm TBD TBD
Part Size (XYZ) Mean/standard deviation of Error length/length of desired part mm/mm TBD TBD
Printable area Maximum printable area mm x mm > 50 x 50 > 100 x 100
Minimum Feature Size Resolution in XY plane mm < 0.1 0.0158
Minimum Feature Size Combined Cured Droplet Diameter mm < 0.5 < 0.1
Color Variability Uncombined Uncured Droplet Volume nL < 25 < 10
Color Variability Uncombined Uncured Droplet Volume Precision nL TBD TBD
Low Cost Total Budget $ < 3,000 - Parts < 3,000 - Parts
Curing Time Time to cure a layer of epoxy sec < 180 < 60
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Project Development
MSD IIMSD I
1 2 3 4 5
Phase 1: Development• Engineering
Specifications• Concept Development
Phase 2: Design• Systems Level• Detailed Design
Phase 3: Design Confirmation• Design Analysis• Formulate BOM
Phase 4: Fabrication• Order Parts• Fabricate Parts
Phase 5: Testing• Characterize• Capabilities
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Systems Overview3D Printer
Software Commands
Uncured Part
Curing
Motion Control
Controller
Controller
Material Delivery Carriage
Z Motor Lead Screw
XY Motors Lead Screws
Light Source
Micro Valves Material Deposition
Platform Cured Part
Computer
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Final Design Concept
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BudgetTotal cost must be below $3000 dollars.Preferred cost is below $1000 dollars to
better align with the Fab@Home mindsetOutcome:
Category CostMaterial and Color Delivery $638.19Curing $55.68Electronics $13.71Total $707.58
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System Testing ResultsDeposition similar to fountain pen.When multiple colors are printed in same
layer, toothpaste like effect.Edges tend to run over.Thickness is relatively repeatable.
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Project Status (Specs Met)Specification Description of Metric Result Acceptable Value Desired Value Spec Met?
Can Print Multicolor Number of Base Colors 3 3 3 Yes
Can Print Viscous Material Viscosity of resin 260cP > 165 > 300 Yes
Z Repeatability Mean of layer thicknesses .24mm TBD TBD -
Printable area Maximum printable area 230mmx150mm > 50 x 50 > 100 x 100 Yes
Minimum Feature Size Resolution in XY plane Tip Dependent < 0.1 0.0158 -
Minimum Feature Size Stream Width Tip Dependent - - -
Minimum Feature Size Combined Cured Droplet Diameter N/A < 0.5 < 0.1 N/A
Color Variability Uncombined Uncured Droplet Volume N/A < 25 < 10 N/A
Color Variability Uncombined Uncured Droplet Volume Precision N/A TBD TBD N/A
Low Cost Total Budget $707.58 < 3,000 - Parts < 3,000 - Parts Yes
Curing Time Time to cure a layer of colored epoxy 240 seconds < 180 < 60 No
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Going ForwardFurther design on mixer/manifoldModification of Fab@Home Software
More modular setupModify paths
More Robust ElectronicsLimit switches, wiring panels, motors,
interfaces, etc.Closed Loop
Z –axis positioning
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Questions?