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Adaptable Bocce Ball Launcher Detailed Design Review. Angela Marcuccilli -ME Brad Johnson -ME Bryan Fleury -ME David Ferguson –ISE Yash Singh -ME. Background. Coaches and athletes in the Genesee Region of Special Olympics New York are interested in adding bocce to the selection of sports
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Adaptable Bocce Ball LauncherDetailed Design Review Angela Marcuccilli -ME Brad Johnson -ME Bryan Fleury -ME David Ferguson –ISE Yash Singh -ME
Background • Coaches and athletes in the Genesee Region of Special Olympics New York are interested in adding bocce to the selection of sports • Many athletes lack the strength and/or mobility to be able to throw or roll the balls used for bocce.
Objective • 1) Create a device that can be used for training local athletes to compete in Special Olympics bocce. • 2) Device should maintain skill level of game • 3) Design for mass manufacturing.
Design Overview • Velocity- Ramp, speed controlled height of ball placement • Aiming- Swivel base, handles, auto correction after each turn, locking mechanisms (damper) • Portability- Light weight, collapsing, wheels, cover
Issues From Concept Review • Instead of hinges, some sort of pins that would slide through legs and some sort of mount located underneath the ramp. Incorporated into final design • Obtain some info on wheelchairs, percentiles etc. This will be considered when determining the height of the ramp. Research ANSUR database, verified ramp height would be feasible. • Make sure balls are rolling not sliding down the ramp. Feasibility analysis. • Have it drop into some sort of trough for transportation. Design cover. • Position of screws, adhesives etc. Will be shown on drawing. • Composites professor is Dr. Ghoneim. • Hand off for manufactures? Mold specs and detail procedure. • Use gutters for experimentation. See of steel angle bar.
Feasibility Analysis • Angled bar experimentation • Distance traveled for pallina & bocce balls • Break up capability
Custom Parts • Wheel mounts • Cover • Bracket for damper • Pull bracket for damper • Mount hinge for legs • Hinge for ramp front
Prototype Fabrication Method • Custom Parts • Brinkman lab • Ramp • Build template • Composite material
Risks Identified/Mitigation • Pallina not traveling far enough • Designing for the worst care scenario • Highest coefficient of friction • Farthest distance necessary (60ft) • Time constraints in manufacturing the ramp (composite material) • Contacted composites professor and lab manager and will be starting as soon as possible (Prototype worst case- Aluminum) • Vulnerability to tilting from side to side • Robust hinges/pins, maximum distance between legs • Placement of top cover during time of the game • Alternate methods discussed- will be revisited if need be or leave cover in van • Damper system • Allow excess time in schedule
Risks Identified/Mitigation Cont. • Portability lifting in out of van • Add handles/recessions in base • Swiveling around when packed up • Straight pin through turntable to eliminate rotation • Ball slipping on the ramp rather than rolling • Used slipping as a constraint for angle of the ramp • Energy loss due to initial drop • Keep the end lift as parallel to the ground as possible, gradual bend in ramp and factoring energy loss into equations • Handle that’s able to be used by an athlete (little grip) • Using pulleys to reduce gripping force • Cost • Shopping around • Repeatability • Damper system