Group 11- ASME Design Competition Final Design Review Alicia Christie Desmond Bourgeois Toddrick Ruff

Topics Covered Overview of Competition Designs Selected Expandable Body Free-Body Diagram Calculations Rock Collector with Actuators Three-Wheel Design with Actuators Lifting Box to Clear Barrier

Overview of Design Competition Optimize Score Weight Power used (mAh) Time Accuracy Follow Competition Rules Size (14.5 x 6.5 x 6.5 in) Schematic of Test Course

Decision from Last Presentations 3 – Wheel Design Rock Collector Mechatronics, Ariel University Center

Expandable Body y Locks when fully extended Body needs to extend by 4.34 in: (2 x y) = 4.34, with overlap and distance

Free Body Diagram- Vehicle Climbing Barrier

Rock Collector Axel “False” Floor

Rock Collector Actuation (Doors)

Rock Collector Actuation (Rock Ejection)

3 Wheel Operating Principle (Recap) Outer axel Assembled View Inner axel

3 Wheel Actuation

Rock Collector Lifting Fixture Problem Creating space for the Rock Collector to pass over objects

Solutions Pulley System or Gearing System Use actuators or motors to raise height of Rock Collector Drawbacks Weight, Spacing, Interference with other components Modify a Transmission for the use of one motor for two functions Code, Weight, Spacing, Intrinsic mechanics

Hinge Design Passive Method Operates by utilizing the robot’s forward motion

Prototype Procedure

Thanks To Sponsors American Society of Mechanical Engineers Boeing Individuals Dr. Carl Moore Dr. Dave Cartes Dr. Chiang Shih Dr. Daudi Waryoba