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Adaptable Bocce Ball Launcher Detailed Design Review

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 Launcher Detailed Design Review

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  1. Adaptable Bocce Ball LauncherDetailed Design Review Angela Marcuccilli -ME Brad Johnson -ME Bryan Fleury -ME David Ferguson –ISE Yash Singh -ME

  2. 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.

  3. Court

  4. Court

  5. 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.

  6. 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

  7. 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.

  8. Final Design

  9. Final Design Drawing

  10. Ramp Profile

  11. Hinge Attachment

  12. Swivel Plate

  13. Damper System

  14. Feasibility Analysis • Angled bar experimentation • Distance traveled for pallina & bocce balls • Break up capability

  15. Supporting Calculations

  16. Current BOM

  17. Custom Parts • Wheel mounts • Cover • Bracket for damper • Pull bracket for damper • Mount hinge for legs • Hinge for ramp front

  18. Prototype Fabrication Method • Custom Parts • Brinkman lab • Ramp • Build template • Composite material

  19. 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

  20. 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

  21. Comments/ Questions?

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