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Re: Worm Gear Drive
Over the summer, we developed a worm gear driven shoulder, that ended up being modified for our robot this year. Our 14lb arm was lifted entirely by a single globe motor (that never burnt out, through 3 competitions) and a 30:1 worm gear reduction. We never had a problem with the gear breaking, or even wearing down, in fact the only problem was that it was too slow (a mind-bending 2.6 rpm!).
The first picture is the inventor rendering of the shoulder transmission (the arm attached to both ends of the shaft)
The second picture is the off-season project transmission (using a 20:1 reduction). Both gears were bought off of McMaster-Carr and are cast iron I believe. If you have any questions, feel free!
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108!!!
2007 Las Vegas Xerox Creativity Award winners!
2007 Las Vegas Quarter Finalists, only alliance to challenge the champs!
2007 UCF Finalists... thanks to 1902, 179, and 386 for the crazy jump in!
2005 UCF regional quarter finalist...
2005 Midwest regional quarter finalist...
2005 UCF Website Winner
2005 Midwest "Delphi Driving Tomorrow's Technology" Award.
2005 Championship Curie Division Champions. (thanks to team 175 and team 33).
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I think it's important to keep FIRST's most important award as the top point getter [in Fantasy FIRST]. It's help reinforce that the Chairman's award, Engineering Inspiration and Woodie Flowers award are actually important and FIRST is about more than just the robots.
- Koko Ed [more] 
25-04-2007, 23:57
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