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Re: CIM direct drive
Quote:
Originally Posted by Cory
we had a heck of a time keeping our pinions in place this year. Due to having 2 gears on one CIM shaft we had no room to use retaining clips like we usually do and we had to rely on a setscrew to keep the gear from moving. Even with 2 set screws 90* from each other the gears would slide out and eventually maul themselves on the adjacent gear. We had to resort to green loctiting them, which didn't work well either when we didn't let it set for 24 hours.
Furthermore the only way to release the loctite is heat. I melted a bit off one of our Delrin sideplates the other day trying to break a stubborn one free.
We hate setscrews and figured this was probably one application where they might be OK. Lesson learned-never again will we rely on them.
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We ran into a similar problem in our 3 motor gearbox. Because we did not have enough clearance to extend the shaft to add a retaining ring we had to resort to some old school methods....superglue works wonders sometimes. It is by no means the most elegant solution, but we did not need a set screw, retaining ring, or anything but superglue to hold the pinions on the CIM motors and AM FP planetaries. You don't need heat to remove them either (although I'm sure a little heat wouldn't hurt), a quick pop with a screwdriver or chisel will break the superglue and the pinion will come right off.
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MORT (Team 11) '01-'05 :
-2005 New Jersey Regional Chairman's Award Winners
-2013 MORT Hall of Fame Inductee
NUTRONs (Team 125) '05-???
2007 Boston Regional Winners
2008 & 2009 Boston Regional Driving Tomorrow's Technology Award
2010 Boston Regional Creativity Award
2011 Bayou Regional Finalists, Innovation in Control Award, Boston Regional Finalists, Industrial Design Award
2012 New York City Regional Winners, Boston Regional Finalists, IRI Mentor of the Year
2013 Orlando Regional Finalists, Industrial Design Award, Boston Regional Winners, Pine Tree Regional Finalists
2014 Rhode Island District Winners, Excellence in Engineering Award, Northeastern University District Winners, Industrial Design Award, Pine Tree District Chairman's Award, Pine Tree District Winners
2015 South Florida Regional Chairman's Award, NU District Winners, NEDCMP Industrial Design Award, Hopper Division Finalists, Hopper/Newton Gracious Professionalism Award
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