First fare 2010 the design process and first robotics

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First fare 2010 the design process and first robotics

  1. 1. THE DESIGN PROCESS AND FIRST ROBOTICS by Rohan Jhunjhunwala Team Captain and Manager of Design, Team 1540
  2. 2. <ul><li>Step 1 </li></ul>Brainstorming
  3. 3. Taking Notes at Kickoff <ul><li>Notate important game rules and big picture items. </li></ul><ul><li>Remember weird rules </li></ul><ul><li>Think about possible designs, note key ideas </li></ul><ul><li>Very specific items don’t matter </li></ul>http://smartadsmart.com/Jill%20Taking%20notes.jpg
  4. 4. First Brainstorming Session <ul><li>All team members should be involved – not just mechanical people </li></ul><ul><li>Make a list of goals </li></ul><ul><li>How will these be accomplished? </li></ul><ul><li>Categorize ideas (winch type hanging vs. grabbing, etc.) </li></ul><ul><li>Break into small teams with a variety of departments represented. </li></ul><ul><li>Use whiteboards AND paper, so you can save your ideas! </li></ul><ul><li>Agree on a final idea – to be fleshed out by design department. </li></ul>http://www.clamlynch.com/blog/brainstorm.jpg
  5. 5. <ul><li>Step 2 </li></ul>Computer Aided Design
  6. 6. To CAD or not to CAD? <ul><li>Very useful for components that are “set in stone” </li></ul><ul><li>Inefficient for detailed CAD of entire robot </li></ul><ul><li>CAD can be time consuming </li></ul><ul><li>CAD “department” </li></ul><ul><li>First CAD without specific dimensions can demonstrate robot function to rest of team. </li></ul><ul><li>Common CAD program options: </li></ul><ul><ul><li>Google SketchUp </li></ul></ul><ul><ul><li>Inventor </li></ul></ul><ul><ul><li>SolidWorks </li></ul></ul>
  7. 7. Google SketchUp <ul><li>Extremely easy to use, fast. </li></ul><ul><li>Good for simple, conceptual CADs </li></ul><ul><li>Difficult to make a CAD that “proves” anything </li></ul>http://blog.hubalek.net/media/1/20060514-sketchup.png
  8. 8. http://catmacey.files.wordpress.com/2008/08/wide-salon.png
  9. 9. Autodesk Inventor <ul><li>Professional, detailed CADs </li></ul><ul><li>Can be given to machine shop for machining </li></ul><ul><li>Can be integrated with CAM </li></ul><ul><li>Can be entered in CAD division in competitions </li></ul><ul><li>Time consuming and difficult to learn </li></ul>http://www.amsystems.com/products/mechanical/images-autodesk-inventor-professional/autodesk-inventor-professional-7-pipe-features.jpg
  10. 10. http://npowersoftware.jp/products/trans/intro/images/motor03.jpg
  11. 11. Manipulators <ul><li>Step 3 </li></ul>
  12. 12. Things to think about <ul><li>Weight Distribution </li></ul><ul><li>Goals of operation </li></ul><ul><li>Simplicity is elegance </li></ul><ul><li>Motors and transmissions </li></ul><ul><li>Fewest number of moving parts </li></ul><ul><li>Utilize multiple forms of motion </li></ul><ul><li>Non-motorized elements </li></ul><ul><li>Weird parts </li></ul>
  13. 13. Organize your thoughts! <ul><li>Consider CAD – need not be perfect for manipulators </li></ul><ul><li>Prototype specific parts </li></ul><ul><li>Consider pros and cons of MULTIPLE designs </li></ul>
  14. 14. <ul><li>Step 4 </li></ul>Ready to Build? Consider Components.
  15. 15. Drive Bases <ul><li>Think about: </li></ul><ul><li>Wheels </li></ul><ul><li>Sprockets </li></ul><ul><li>Transmissions </li></ul><ul><li>Type of base </li></ul><ul><li>Motors </li></ul><ul><li>Weight distribution </li></ul><ul><li>Modularity </li></ul>
  16. 16. Transmissions <ul><li>Find a transmission that compliments your design </li></ul><ul><li>Some transmissions offered to FIRST teams: </li></ul><ul><ul><li>AndyMark Planetary </li></ul></ul><ul><ul><li>AndyMark Toughbox </li></ul></ul><ul><ul><li>BaneBots Planetary </li></ul></ul><ul><ul><li>Shifters </li></ul></ul><ul><ul><li>Fisher Price </li></ul></ul><ul><li>Think about gear and sprocket ratios </li></ul>BaneBots, LLC
  17. 17. Framing Options <ul><li>80/20 </li></ul><ul><li>QuickFrame </li></ul><ul><li>Other Aluminum extrusions </li></ul><ul><li>(Angle, I-beam, etc.) </li></ul><ul><li>Wood </li></ul><ul><li>Plastic </li></ul>
  18. 18. Pros and cons of different parts <ul><li>Sprockets and Chain (size) </li></ul><ul><li>Bearings </li></ul><ul><ul><li>Igus </li></ul></ul><ul><ul><li>Ball </li></ul></ul><ul><ul><li>Needle </li></ul></ul><ul><ul><li>Bronze </li></ul></ul><ul><li>Axle </li></ul><ul><li>Bolts vs. Rivets </li></ul><ul><li>Should I use pneumatics? </li></ul><ul><ul><li>Binary device </li></ul></ul><ul><ul><li>Powerful </li></ul></ul><ul><ul><li>Extra components </li></ul></ul><ul><ul><li>Linear motion w/ motors </li></ul></ul><ul><ul><li>Fast </li></ul></ul><ul><ul><li>Constant pressure </li></ul></ul><ul><ul><li>Ease of use </li></ul></ul>
  19. 19. Motors! <ul><li>Motors included in KOP: </li></ul><ul><ul><li>Fisher Price </li></ul></ul><ul><ul><li>CIM </li></ul></ul><ul><ul><li>Window Motors (Nippon Denso) </li></ul></ul><ul><ul><li>Mabuci RS Motors </li></ul></ul><ul><ul><ul><li>RS-555SH </li></ul></ul></ul><ul><ul><ul><li>RS-555VC </li></ul></ul></ul><ul><li>Stall Currents: </li></ul><ul><li>Fisher-Price 70 CIM 133 RS-555SH 4.4 </li></ul><ul><li>RS-555VC 10.9 </li></ul><ul><li>Window Right 18.6 </li></ul><ul><li>Window Left 21 </li></ul>
  20. 20. Effective Prototyping <ul><li>Use 80/20 or other quick materials </li></ul><ul><li>Only prototype complex systems </li></ul><ul><li>Prototype robot? </li></ul><ul><li>Don’t worry about weight </li></ul><ul><li>Use old parts, and approximate gear ratios, operate things by hand, etc </li></ul><ul><li>Adjust prototype until it works, and take note of adjustments, so final robot will perform similarly. </li></ul>
  21. 21. Parts! <ul><li>Local </li></ul><ul><ul><li>McGuire Bearing </li></ul></ul><ul><ul><li>Metal Supermarkets </li></ul></ul><ul><ul><li>Winks Hardware </li></ul></ul><ul><ul><li>Falk Ace Hardware </li></ul></ul><ul><ul><li>Muticraft Plastics </li></ul></ul><ul><li>Web </li></ul><ul><ul><li>McMaster-Carr ( www.mcmaster.com ) </li></ul></ul><ul><ul><li>OnlineMetals ( www.onlinemetals.com ) </li></ul></ul><ul><ul><li>Small Parts, Inc. ( www.smallparts.com ) </li></ul></ul><ul><ul><li>MSC Industrial Supply ( www.mscdirect.com ) </li></ul></ul><ul><ul><li>RobotShop ( www.robotshop.com ) </li></ul></ul><ul><ul><li>Robot Marketplace ( www.robotmarketplace.com ) </li></ul></ul><ul><ul><li>AndyMark ( www.andymark.biz ) </li></ul></ul><ul><ul><li>BaneBots LLC ( www.banebots.com ) </li></ul></ul><ul><ul><li>United Nuclear ( www.unitednuclear.com ) </li></ul></ul><ul><li>Warden Fluid Dynamics (For 80/20 products) </li></ul>
  22. 22. www.oregonfirst.com www.team1540.org [email_address]

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