design review #updated
Post on 16-Jan-2017
103 Views
Preview:
TRANSCRIPT
Manual Cassava PeelerTeam Lead: Kate Randolph
Financial Chair: Hawley HelmbrechtDesign Chair: Eddie VinciguerraCommunity Partner: Daniel Nzengya
Project Objective:To create and distribute a machine that is able to efficiently peel cassavas for rural farms in Kenya.
End Goal:InexpensiveDurableUser FriendlySafe
CassavaRoot Vegetable
High in Protein and Starch 1 Million Tons Produced in Kenya Every YearRelied Upon as the Main Nutrional Source
Problem●Large Amount of Cassava Wasted Each Year
○Kenyans unable to peel cassavas before they rot
○Current peeling technique is inefficient
Current Method in Kenya:●Currently Peeled by Hand (with a knife)
large portion of the “meat” lostnot safe difficult very time consuming
Who would benefit from thisKenyan Farmers
Can more efficiently process their product.Can produce more product for less work.Kenyan familiesFarmers can supply more cassava products to
towns/villages.Families can process their own cassavas.
Previous Design
● Power: Rolling across a surface
● Abrasion on inside of cylinder
● Only One Cylinder
Testing - Current MethodMethod: Knife
Pros: ● Easy to hold
Cons: ● Could not cut through outer
peel● Not easily controlled● Easy to accidentally cut into
meat● Not as safe as grater
Testing - Abrasion Technique
Method: Large Grater
Pros:● Cut through skin
easily
Cons:● Took off too much
of the meat
Method: Medium/Large Grater
Pros:● Did not remove as
much meat
Cons:● Still removed
substantial meat
● Did not cut through skin easily
Testing - Abrasion Technique
Method:Medium/Small Grater
Pros:● Did not remove
much of the meat
Cons:● Left a lot of skin
behind
Method:Small Grater
Pros:● Removed
majority of skin● Did not remove
much meat
Cons:● Grater becomes
clogged easily
Current Design● Metal/plastic tube
● used as the mold to
wrap the sheet metal around
● Abrasive material
● To be wrapped around the outside of the tube
Current Design● Wooden Crate to House the
Abrasive Cylinders● Three Abrasive Cylinders● Cylinders Will Rotate in
Opposite Direction
Current Obstacles●Power Source●Adjusting to Various Sizes and Shapes of Cassavas
●Peeling the cassavas evenly
Design ImprovementsRemoved Rolling MethodInverted Abrasive Side of CylinderAdded Multiple CylindersContained Cylinders Within a BoxCreated an Inverse-Rotation Design
Criteria for the Prototype●Efficiency
○Percent of cassava peeled○Time to peel number of cassavas
●Ease of Use○Emptying the cassava peels○Cleaning the blades
●Cost●Manufacturability
Budget for the SemesterCurrent Semester: $400
Cassavas - $80Wooden Boxes - $50Sheet Metal - $ 100PVC Piping - $60Misc - $150
End Goal:Final Price Lower Than $300
Semester TimelineSeptember NovemberOctober
- Evaluate obstacles and problems of old design- Brainstorm new design- Create sketch of new design- Plan materials and steps necessary to create prototype- Design Review
- Evaluate design based off of comments from design review- Collect materials- Build prototype- Find an industry partner- Meet with community partner
- Contact Kenyan farmers- Evaluate Prototype- Plan for Next Semester- Final Design Review
Continued TimelineDecember FutureSpring Semester
- Asses work from past semester- Update Design Document- Adjust goals for next semester - Create plan for spring semester
- Reevaluate old design- Build new prototype or improve old prototype- Compare working prototype to efficiency of current Kenyan farming techniques
-Design Distribution Process for Prototypes
-Implement Prototypes in Farms in Kenya
-Improve the Product for the People in Kenya
-Plan Manufacturing Process of the Finished product
Thank You
top related