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Unread 25-01-2009, 13:00
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thefro526 thefro526 is offline
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AKA: Dustin Benedict
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Re: pic: 816 as of 1-24-09

Quote:
Originally Posted by Michael Corsetto View Post
Is the kinda "gut" area between the intake roller and conveyor belt system used for storage, or is it blocked off with lexan so the balls can't bunch up? How many balls can the system hold? How well does that front roller grab running at 600rpm? What sort of compression do you put on the balls for the front roller and conveyor system? Sorry about all the questions, looks like a pretty slick design, post video soon please
Most of the front open area is used as a hopper of sorts some of it will be used for electronics mounting. If you look closely you can see 2 pieces of angle just kinda sitting there and thats where our electronics shelf mounts to. Theoretical capacity is between 15-20 balls depending on how they all settle in the system. The front roller grabs very well and can handle 2 balls at a time and both the conveyor System and front roller compress the ball about 1/2" give or take a bit depending on what you say a ball's diameter is (I say it's 9").

Quote:
Originally Posted by dtengineering View Post
I don't know if you've already got something planned, but have you thought about protecting the intake roller?

On impacting the corner of another robot, the contact may not be bumper-to-bumper, but rather the edge of the other robot (usually reinforced or supported) to the centre of your roller. Perhaps the roller is designed to take this kind of hit, but it would be a shame to see a nice looking robot like that out of commission due to a weak point.

Assuming the roller IS designed for a full-on impact, if the relative velocity of the two robots is at an angle, can the roller mounts take a sideways impact force?

Jason
In theory the front roller should never be hit. It's about 8.5 inches off the ground at it's lowest point which is out of the bumper zone. If it did hit the structure of another robot I hope it'll break and then we just have to replace a piece of pvc. On Monday I'll look into making a guard for it so that it would be metal to robot contact before robot to roller.

Quote:
Originally Posted by jason701802 View Post
I've never seen belting like that, what is it?
Quote:
Originally Posted by Tristan Lall View Post
It's a segmented V-belt. It's made from some sort of fabric laminate, and composed of individual links. You twist the tab 90° and insert it into the slot on the next link; then untwist. They lock together under tension.

I believe that Small Parts sells it...this ought to be it. (188 used it for a hybrid wheel-tread thing on the 1999 drivetrain.)
Thats the exact belt I think. We've had it for years and I believe we got it from the HVAC Teacher at my school because they use it for belting on compressors.
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