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 Many athletes lack the strength and/or mobility to be able to throw or roll the balls used for bocce.

Court

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.

Final Design

Final Design Drawing

Ramp Profile

Hinge Attachment

Swivel Plate

Damper System

Feasibility Analysis Angled bar experimentation  Distance traveled for pallina & bocce balls  Break up capability

Supporting Calculations

Current BOM P08004 BOM PART NUMBERVENDORDESCRIPTIONQTY.COST ($) bikepartsusa.com Pyramid BMX brake lever, pair. Non-locking.1$ bikepartsusa.comPyramid BMX, Set, Silver Alloy Brake Caliper1$ bikepartsusa.comClarks GALV, w/HOUSING UNIV Black, Brake Cable2$ A42McMaster CarrSteel Folding Pull Handle with Mounting Plate Zinc Plated Finish, 3-3/8" W X 1-3/4" H Plate1$ K161McMaster CarrMilitary Spec Aluminum Tubing 1/2" OD,.444" ID,.028" Wall, 3' Length1$ K133McMaster CarrAlloy 6061 Aluminum Hard Anodized Coated Rod 1/4" Diameter, 3' Length3$ T3McMaster CarrLubricated Corrosion-Resistant Turntable Galvanized 12" Round1$ K139McMaster CarrGray PVC (Type I) Sheet 1/2" Thick, 12" X 36"1$ K51McMaster CarrSlam-Preventing Extension Damper Adjustable, 180# Extension Force,.98" Stroke1$ K232McMaster CarrSteel Extension Spring 11" Length, 1/2" OD,.047" Wire1$ K19McMaster CarrGalvanized Low-Carbon Steel Sheet.096" Thick, 24" X 48"1$ K14McMaster CarrPVC Vibration-Damping Mount 20 lb Load Per Mount, for.509" Hole Dia4$ A13McMaster CarrRubber T-Handle Draw Latch with Zinc Plated Stl Strike, 15/16" Latch Distance6$20.10 EXPLRWCLOSEwww.skates.comExplore ELITE Inline Closeout Competition, Training & Fitness Wheels2$ Tapplastics.comE-Glass Boat A Cloth (38 in. W), linear yard20$ Tapplastics.comUltra-Glo, 16 oz kit1$ Tapplastics.comGeneral Purpose Epoxy Kit, 1/2 gallon1$46.95 TOTAL COST OF SUPPLYS:($) TOTAL BUDGET REMAINING:($) 944.7

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

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