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Unread 21-01-2015, 13:05
Travis Schuh Travis Schuh is offline
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Re: actuating a brake or anti-backdrive

Quote:
Originally Posted by loafdog View Post
Hi,

We don't plan on using pneumatics on our robot so I was looking for ideas that used something else to control/move a mechanism that would brake/stop elevator.
I was wondering if servos can be used to control brakes or some other kind of anti-backdrive component. Poking around andymark I saw shifting gearboxes controlled by servos for example. I've seen people on CD discuss bike brakes, ratchets, etc..
But I haven't seen anyone discuss how you can implement these ideas. Anyone done this before and have details/pics they can share?

(note, I'm not a mechanical type.. i do software, just trying to get ideas to share with my team).

THanks.
-Maciej
We used a disc brake on our 2014 shooter and found it very easy to work with. You can check out our CAD for details of how we implemented it. We used pneumatic to pull the cable, but you could just as easily use a spool or leaver arm on a very large versa planetary reduction to pull (I think you could do an over-center linkage thing with a hard stop kinda like the cho-cho linkage to have no holding current and make the software pretty easy). You would have to do the math on those details.
 


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