ATK Automated Bullet/Case Loading University of Idaho, Mechanical Engineering Dept.

1. ATK Automated Bullet/Case LoadingUniversity of Idaho, Mechanical Engineering Dept. Team FMJ Chris Doudy, Ryan Kahre, Adriana Foreman, Ryan Bowen, Jordan Maag Faculty Advisor: Dr Jay McCormack

2. Overview • Problem Definition • Background Information • Problem Statement & Design Criteria • Deconstruction of Components • Design Inspirations • Design Concepts • Current Developments • Build and Test • Optimization Experiment • Future Work • Final Deliverables • Budget

3. Background Information • Shaker tables are used to fill trays of 500 for bullet assembly • Current methods cause ergonomic concerns • Heavy lifting • Repetitive motion • Lack of adjustability

4. Problem Statement • Develop a working prototype to automate the labor intensive processes (lifting, pouring, orienting) currently being performed

5. Design Criteria • 9mm caliber • Bullets: TMJ, GDHP • Cases: Aluminum, Brass • Automated Process • High Reliability: <1 incorrect for every three 25x20 trays

6. Deconstruction of Components • Feeder – subsystem that accepts bullets/cases into the assembly; arranges bullets as necessary for delivery to the sorter • Sorter – subsystem that takes input bullets/cases from random orientation to an upright position (base down, nose up) • Delivery – subsystem that feeds upright bullets/cases from the sorter to the final tray

7. Design Flow Chart Collection Bin & Crane Feeder Final Tray 5x5 Upright

8. Inspiration – Case Shaker • Available for hand loaders • Orients cases upright using center of gravity – COG towards the base causes a moment that keeps cases from falling into the holes upside down

9. Inspiration – Bullet Tipper • Used for hand loaders • Flips bullets from binary input • Upside down: groove in the floor catches tip and flips bullet over • Right-side up: base passes over the groove

10. Design Concepts– CAD Models

11. Key Components – Bullet • Feeder • Flipper • Drop Tubes

12. Feeder • Hopper limits amount of bullets over the holes • Rocker arms allow only one bullet to be dropped from each tube at a time • Drops 25 bullets at a time

13. Flipper • Flips bullets that are upside down in the boxes while ignoring the upright ones • Flipping is accomplished by the groove and ramp • Works with all 9mm bullets

14. Drop tubes • Drops flipped bullets into bullet plate row by row • Ensures that bullets are dropped with precision • Overcomes offset center to center distances of Flipping lanes

15. Key Components – Case Shaker • Shaker Tray • Feeder Mechanism

16. Key Components – Shaker Tray • Cases slide down ramp • Shaking action forces cases to fall into holes at bottom of ramp • The case’s center of gravity causes it to fall case head down

17. Key Components – Feeder Mechanism • Cases stack up in lanes • Friction wheels control feed rate into tray • Mechanical switch rotates the wheel, drops one row of cases into tray below

18. Current Progress – Prototyping

19. Optimization Experiment 2^k Factorial Statistical Analysis

20. Future Work – 2nd Semester • Module optimization • Module integration • Development of control systems • Overall integrated system testing and debugging

21. Final Deliverables • Working Prototypes • Automated process from Feeder to Delivery • Capacity to fill 5x5 plates • 9mm TMJ, GDHP, Brass & Aluminum Cases • High Success Rate: > 99.5% • Additional Features (as possible) • Calibers: .45, .40, .38, etc.

22. Budget- Case Feeder

23. Budget- Bullet Flipper

24. Total Budget

25. Questions?