mockup review manioc grater mika tomczak steve amanti emil cuevas dean ljubicic deanna lentz sam...
TRANSCRIPT
![Page 1: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/1.jpg)
Mockup Review
Manioc Grater
Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic
Deanna Lentz Sam Felton Chris Rhodes
![Page 2: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/2.jpg)
Purpose of Manioc Shredder
• Increase daily productivity of Haitian manioc grating
• Produce food-quality Manioc flour• Be used on a portable, individual scale
![Page 3: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/3.jpg)
Critical Issues
• Resolved in this mockup:– Ability to produce desired particle size– Ability to produce flour
• Remaining challenges– Increase throughput– Decrease cost– Address practicality of mechanical design
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Our Challenge: Small Particle Size
• Purpose of shredding: to rupture cell walls to release starch granules
• Current methods produce strips 1/16”-1/8” thick, 1/4”-1” long
• To test whether particles are small enough to grind and sun-dry manioc, observe the consistency of the flour produced, and compare to output of current processes
![Page 5: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/5.jpg)
Smaller Blade Size 1/8 inch
To achieve smaller particles :• Decrease blade thickness
(0.125”)
• Vary teeth height (0.3” , 0.15”)
• Increase number of blades (6 14)
• Decrease space between spacers and blades to prevent fall through
![Page 6: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/6.jpg)
Single-Axle Design
Advantages :• Fewer blades / less material
required• One axis of rotation – no gear
system needed
Disadvantages:• The smaller cutting size is more likely to clog or cake with manioc pulp
![Page 7: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/7.jpg)
Second Stage Screw
• Sketch model suggested second stage needed.
• Large manioc pieces are put through second stage cranked screw mechanism
Outcome:• Production rate: 2.4 kg/hr• 20% increase over
traditional methods
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Comparing Final Flour Product
• Manioc grated by the different methods were dried and crushed to compare flour output
• Two-stage method produced flour of comparable size and consistency to old method (although new method seemed to yield smaller particles)
![Page 9: Mockup Review Manioc Grater Mika Tomczak Steve Amanti Emil Cuevas Dean Ljubicic Deanna Lentz Sam Felton Chris Rhodes](https://reader038.vdocuments.mx/reader038/viewer/2022110323/56649d895503460f94a6f35e/html5/thumbnails/9.jpg)
Grater Mockup Analysis
Achievements • Appropriately small sized grated manioc produced by
reasonable mechanical means.Future Steps
• Speed up process to make product commercially viable. • Couple first and second stage mechanisms.• Improve cost efficiency
Lessons • Shredding cannot achieve desired particle size in single
stage with low precision.• Screw works, but manioc needs preparation stage.• Need more mechanical advantage to increase output speed.
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Conclusion
Must reconsider the manner in which we rasp manioc if we are going to pursue this idea.