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Unread 25-01-2008, 10:15
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JesseK JesseK is offline
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Re: Official Team 2526 Robot Model!!

Stick with the halos. Halos are your friend! Hence my new sig.

I'm curious as to how you plan to reinforce the halo claws so that a falling/bouncing ball doesn't destroy them. You could make them out of honeycomb aircraft aluminum and build in a break-point at the mount, with black rubber hoses to pad the sharp corners, but even that is fairly heavy. We're still prototyping different things for ours; we love the idea but we're becoming stumped on how to make one that's quality enough to last several competitions.

Still, glad to see a great idea wasn't only ours!

edit -- just noticed something else with your actuation --
It looks great in CAD, but I wonder how you mated up the pneumatic cylinders that are mounted to your 2 halo claws. They're sitting out there, freely able to move. In practice, this has created a problem with our prototypes: when the cyllinder goes out and opens your "claw", the claw is symmetric, and your top and bottom claws are lined up with each other perfectly. However, when the cyllinders go in and your claw closes, I seriously doubt your claws will still line up. The reason is that there is minutely more friction on one side of your claw than the other, and if there are no restrictions on how far inward one side of the claw can go the side with less friction will go past its symmetric position. I hope I'm making sense of this, I'll get a picture of our prototype later if I'm not.
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Last edited by JesseK : 25-01-2008 at 10:23. Reason: zoiks!