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Unread 05-09-2013, 19:27
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EricH EricH is offline
New year, new team
FRC #1197 (Torbots)
Team Role: Engineer
 
Join Date: Jan 2005
Rookie Year: 2003
Location: SoCal
Posts: 19,726
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Re: Help With Off Season Project

You are looking for a single pivot axis--best bet is probably going to be to build a bracket that goes around the barrel, with either an attached axle on both sides (think an old cannon, say early 1800s style) or a hole (or two on the same axis) above or below the barrel. Then you need something on the robot frame that can accept either the axle attached to the barrel or whatever goes through the holes in the bracket.

I bet I know what your next question is going to be, too: How to actuate it. Depending on design, a chain/sprocket or belt/pulley or gearing setup will work, with the driven gear attached to the bracket at the axis of rotation, or use a leadscrew or pneumatic cylinder (leadscrew is probably better) attached to the bracket somewhat on one side of the pivot.
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Past teams:
2003-2007: FRC0330 BeachBots
2008: FRC1135 Shmoebotics
2012: FRC4046 Schroedinger's Dragons

"Rockets are tricky..."--Elon Musk

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