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Squash Ball Launcher

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fruma
33 diapositives · 1.3K Views · Aug 01, 2014

Squash Ball Launcher. Team #9. Travis Frank Ned Feltham Corey Clarke Shawn Belliveau. Presentation Outline. Design Problem Design Requirements The Design Testing Design Performance Budget Conclusions Questions. Design Problem.

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Squash Ball Launcher
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  1. Squash Ball Launcher Team #9 Travis Frank Ned Feltham Corey Clarke Shawn Belliveau

  2. Presentation Outline Design Problem Design Requirements The Design Testing Design Performance Budget Conclusions Questions

  3. Design Problem The goal of this project was to design and build a device to launch squash balls consistently for the purpose of training beginner to intermediate squash players

  4. Design Requirements • The design requirements for our squash ball launcher are: • • Variable speeds: 30 to 100 MPH • • Variable angles: 0 to 30 degrees • • SAFE!!! • • Portable: Less than 200 lbs and fits through the squash court door • • Shoots multiple balls: Minimum 10 in a row • • Fixed time between shots: Allows 3 seconds between shots • • Accuracy: shoot the balls in a 3’x3’ square 4 out of every 5 time • •Cost: Must cost under $2000

  5. The Design

  6. Frame Pivot Point Caster

  7. Drive Train ½” Pillow Block Driving Disc Coupler DC motor controlled by PWM

  8. Drive Train

  9. Hopper Cog Casing Hopper Motor Custom Tube

  10. Hopper

  11. Design Testing

  12. Portability Test Weight: 160 lbs

  13. Accuracy Test • Used to determine if squash ball launcher could launch the balls into a 3’x3’ square • Results: Squash balls land inside target with 100% accuracy

  14. Accuracy Test

  15. Speed Test • The test was performed in the sexton gym using the launcher, a stop watch and a measuring tape • -Over 20 tests, the ball launched at an average of • 49 MPH • -This is higher than the minimum speed required but doesn’t reach the maximum speed of 100 mph we set

  16. Speed Test

  17. Safety Test -The squash ball launcher successfully passed the safety inspection performed by the Department of Mechanical Engineering -Safety covers we added to the design to protect users

  18. Ball Warming Test • The test was performed to determine the affect that heating has on the squash ball performance • Custom ball heater was used (seen on the next slide) • Results: Heating the balls provided significant improvement for rebound distance after they impacted the front wall • The average increase in rebound distance was 52 inches

  19. Ball Warming Device • A hairdryer is sealed into a plastic bucket which blows hot air into the open space of the bucket. • The hot air is then forced up through a screen which holds the squash balls. • The balls are then covered and heating begins.

  20. Ball Warming Test

  21. Shot Test • Purpose was to effectively perform the serve, the drive, and the three wall boast • The launcher should deliver ten shots in succession at an interval that would allow the player to have the opportunity to prepare for the next shot • Results: All shots were performed successfully with 10 balls being fired in succession during each test

  22. Shot Test: The Serve • Launcher was set in the service box for the trial • Consistently launched accurate serves as seen in the picture

  23. Shot Test: The Serve

  24. Shot Test: The Drive • Launcher was set just in front and to the right of the service box and was aligned to shoot straight ahead and just below the service line • Squash ball lands just behind the service box

  25. Shot Test: The Drive

  26. Shot Test: Three Wall Boast • Launcher was placed just behind left service box • The 3-wall boast went from the left wall to the centre of the front wall and then hit the right wall and landed

  27. Shot Test: Three Wall Boast

  28. Team 9 Practice

  29. Testing Performance • All the design requirements were met for the squash ball launcher

  30. Budget

  31. Conclusion and Recommendations • All design requirements were met with the exception of reaching a maximum ball velocity of 100 mph • We could reach this goal by using more powerful motors • Since heating the balls significantly increased the performance of the launcher the group would recommend attaching a ball heater directly to the squash ball launcher • We would also suggest constructing the launcher from aluminum to further lower the weight

  32. Acknowledgements Special Thanks to Shell and the Department of Mechanical Engineering Dr. Warkentin Dr. Militzer Dr. Hubbard Mark MacDonald Albert Murphy Angus MacPherson Mechanical Engineering Class

  33. Questions?