final presentation.pptx
TRANSCRIPT
Scrub-RayBy: Cole, Kevin, Alex, Karol, Roland
Roland
Washing Dishes is a Pain!• For those without dishwasher access (especially college students)• Alternative to elbow grease/expensive machines• Effective, compact, and affordable
2Roland
RecapCompetitors:
Initial Design:
3Roland
Design Characteristics1.Wanted the product to be comfortably operated with one hand (4 in.
diameter, 2 in. depth)2.Maximize the efficiency of the water powered turbine
a.Includes the angle of entrance for waterb.Minimizing frictionc.Correct disposal of water from chamberd.Turbine Shapee.Gear system
3.Easy disassembly for interchangeable gears/turbines (DoE)
4Cole
Old vs. New
5Cole
Demo Movie
6Cole
Issues1. 3-D printing tolerances2. Friction3. Gearing
•Ratios•Planetary system
4. Creating a pressure differential5. Tolerance stack-up and alignment6. Adhesives/fasteners7. Water Release System
7Alex
Successes1.Use of planetary gear system
a.Solved the insufficient torque issue2.Acrylic as the material
a.Excellent tolerancesb.Far lower friction
3.Sufficient amount of budget lefta.$88/$200 (44%)
4.Product’s rotational piece spins efficiently and powerfully
8Alex
Manufacturing Method• Our Purposes (Prototype)
• Layered laser cut acrylic and plastic bonder• Through-holes for bolt fasteners (disassembly)
• Mass Produced• Injection molded with plastic bonder• Not made for disassembly
9Karol
MaterialAcrylic
• Pros:• Low friction• Great tolerances• Precision cutting• High machinability
• Cons:• Must create 2-D parts and layer to make 3-D• Poor wear resistance• Easily chips
10Karol
Prototype vs. Ideal
11Kevin
CAD Drawings
12Kevin
13Kevin
DFA (Prototype)
14Kevin
DFA (Ideal)
15Kevin
aPriori Cost Analysis
16Kevin
DOEMeasured Revolutions Per Minute
• Tied string to shaft
Variables • Turbine Shape (x1) • Water Power (x2) • Gears (x3)
Characteristic Equation • RPM = 119 + 39.92x2 + 45.42x3 + 13.33x2x3 • Max = 218 RPM
17Karol
18Karol
19Karol
Gantt Chart
20Cole
Budget
21Cole
Wrap-Up• Despite multiple obstacles, we managed
to turn a common kitchen faucet into a dish cleaning machine!
22Roland
“The race is not always to the swift, but those who keep on running”