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-   -   Looking for roller brush (http://www.chiefdelphi.com/forums/showthread.php?t=71527)

MrForbes 08-01-2009 12:28
Re: Looking for roller brush
 
Chimney sweep? what's that? asks the fellow from Arizona :)

(actually a chimney sweep lives up the road from me, I see him driving his old Ford truck to work often, wearing his top hat and towing his little trailer advertising his services)

JesseK 08-01-2009 13:51
Re: Looking for roller brush
 
We prototyped a sort of custom brush using thin rubber hose and holes drilled into 1" OD PVC pipe. The more rigid the rubber, the better it works. We wanted to use rubber so that it would flex in case on of the 'bristles' impales the ball. Using thin hosing allows us to interlace surgical tubing on the same roller so that the brush leads straight into the conveyor.

synth3tk 08-01-2009 15:06
Re: Looking for roller brush
 
Jesse, could your team kindly post a picture of this setup? If it's ok with you guys. I'd like to see how this works.

MrForbes 08-01-2009 21:09
Re: Looking for roller brush
 
How will Rule R05 work with brushes, which have bristles of about .015" diameter?

Quote:
<R05> Exterior or exposed surfaces on the ROBOT shall not present undue hazards to the team members, event staff or GAME PIECES. Reasonable efforts must be taken to remove, mitigate, or shield any sharp edges, pinch points, entanglement hazards, projectiles, extreme visual/audio emitters, etc. from the exterior of the ROBOT. All points and corners that would be commonly expected to contact a GAME PIECE should have a minimum radius of 0.125 inches to avoid becoming a snag/puncture hazard. All edges that would be commonly expected to contact a GAME PIECE should have a minimum radius of 0.030 inches. All of these potential hazards will be carefully inspected.

pacoliketaco 08-01-2009 21:32
Re: Looking for roller brush
 
Our team worked today on a similar mechanism, using a rotating PVC pipe with k'nex pieces sticking out of it to draw the cells in. later we changed the k'nex to pneumatic tubing, to see how a flexible bristle worked. this seemed to work just as well, with the added bonus of not getting caught in the cells.

http://i37.photobucket.com/albums/e8...0108091616.jpg

mbushroe 08-01-2009 23:37
o make Found Large bristle brushes
 
You were all looking in the wrong areas. People who make filters for koi ponds use 5-6 inch plastic brushes several feet long to allow algae to collect on them, and they are fairly inexpensive. Check out this link:

http://www.azponds.com/filter_media.htm


Hope this helps.

Mike

NOV8R 08-01-2009 23:39
Re: Looking for roller brush
 
Check these monster hair brushes out.....www.adiscountbeauty.com/page292.html

EricH 09-01-2009 00:11
Re: Looking for roller brush
 
Quote:
Originally Posted by squirrel (Post 796230)
How will Rule R05 work with brushes, which have bristles of about .015" diameter?
I would expect that the inspectors will look very, very closely at the brushes and the rules for a few minutes, and then have a conversation with each other. After about half an hour, someone will probably notice the "should" (not "must") in the rules and pass you.

MrForbes 09-01-2009 00:28
Re: Looking for roller brush
 
Thanks Eric. I was hoping someone would volunteer to post the question on the Q&A....

Vikesrock 09-01-2009 00:51
Re: Looking for roller brush
 
Quote:
Originally Posted by squirrel (Post 796480)
Thanks Eric. I was hoping someone would volunteer to post the question on the Q&A....
Done!

mjgard 13-01-2009 11:44
Re: Looking for roller brush
 
Response from GDC on Brushes.

Rule <R05> would be applied to the entire brush construction, not the individual bristles. As such, as long as the brush was not so stiff that it would cause damage to the GAME PIECES, it is unlikely to cause a conflict with Rule <R05>. There are no other rules that would generically prohibit the use of a brush assembly to collect GAME PIECES.

synth3tk 13-01-2009 14:55
Re: Looking for roller brush
 
Thanks for the word!!! It came just in time for us to review our brush design.

M. Gildner 13-01-2009 15:07
Re: Looking for roller brush
 
Check out your local job shop or vacuum store


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