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 Don't limit programming to just hitting keys, there is a lot of logic/design involved. - Mike [more] |
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This is the rookie team 5107's, The Neurotoxins, bot for the FIRST season. I am wrapping up some of the CAD and figured I would post a rendering. Things that are left to do are:
1: Add polycarb sheet over electronics (style and protects electronics)
2. Add Lead screw drive to model. I have it designed and drawn just trying to figure out how to make it pretty as of right now it is a big eye sore.
3. Move around some electronic components on bottom board
4. Build battery box
Our bot uses two 4in wheels mounted on our claw for intake. When the ball is lifted it is picked up by the forks and this drops the ball low enough to where the wheels are not contacting the ball anymore. The launcher is powered by springs or surgical tubing. It was designed in a fashion where both can be used so we can change it out if needed. That is pulled back by a modified 2 CIM ball shifter from VEX. It is pulled back and prevented from back driving by custom ratchet mech mounted to the gear box then when ready to fire the box is shifted into a neutral gear. Let me know what you guys think! 
Discussion
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22-01-2014 12:31
xForceDee
Re: pic: 5107 CAD Progress
Awesome Design! I like its simplicity. I assume the claw can be rotated near vertically to fit within the frame perimeter?
22-01-2014 12:38
Ty Tremblay
Re: pic: 5107 CAD Progress
When you lift your arm up, is the ball only supported by the two bottom posts, or is there another mechanism not included in the render? If so, what happens if a robot runs into you after you lift your arm up? What happens if you come to a quick stop?
22-01-2014 14:20
catacon
Re: pic: 5107 CAD Progress
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Originally Posted by md2377
What CAD program did you use for that rendering?
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22-01-2014 15:04
Bryce2471
Re: pic: 5107 CAD Progress
Your design looks similar to ours in a few ways. Very slick, but you might want to make sure that your puncher will hit the center of the ball. (unless you're trying to put spin on the ball)
22-01-2014 15:13
Dr.Gusta
Re: pic: 5107 CAD Progress
Thank you guys do much for the positive comments. As for holding the ball tightly yes it only rests on the two forks. We did some testing and it holds it quite securely. Yes the ball will fall out if we get hit hard but we were willing to sacrifice that to keep our design simple. As for the puncher hitting center I did the math so that the puncher hits the ball dead center. Lastly this was all drawn in Autodesk Inventor. You can make it look nice like this in the view menu while in your final assembly. Then turn on shadows reflections and change shading to realistic which turns on ray tracing. Then change the scene from two lights to what ever you want.
23-01-2014 00:36
bEdhEd
Re: pic: 5107 CAD Progress
This is a great render!
I was wondering, have you had better luck testing with surgical tubing than with springs, or vice versa?
We tried many types of springs, and found surgical tubing to be the most practical choice for this application.
Also, did you think of different disk sizes for the puncher? Because that can affect shooting efficiency. The more surface touching the ball, the better.
23-01-2014 00:42
EricH
Re: pic: 5107 CAD Progress
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Originally Posted by xForceDee
Awesome Design! I like its simplicity. I assume the claw can be rotated near vertically to fit within the frame perimeter?
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As a reminder, you have to be inside the frame perimeter at the start, and within 20" horizontally of it during the rest of the match. You're looking mighty close to that, though some of that might just be the angle.
BTW, I see a distinct similarity to a robot that is in the top 3 of all time in FRC. That, along with the detailed CAD, kind of scares me--in a good way, of course! I'll have to check y'all out in Inland Empire.
23-01-2014 13:30
Dr.Gusta
Re: pic: 5107 CAD Progress
WOW top three robots in FRC history that is intense did not know there was a hall of fame I will have to check that out. We tested both springs and surgical tubing and had success with both so we made it so both can be used. As for the 20" extending from the frame perimeter it is two inches under and that was not by accident either lol. Thank you for all of the positive support really means a lot coming from veteran teams.
23-01-2014 19:45
EricH
Re: pic: 5107 CAD Progress
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Originally Posted by Dr.Gusta
WOW top three robots in FRC history that is intense did not know there was a hall of fame I will have to check that out.
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On the other hand, the all-time top 3 ROBOTS is a bit of an informal "who do you think?" type of discussion, and generally includes team 71 in 2002, and tends to include 1114 in 2008 (which is the one I was referring to); the third robot is under debate from time to time, but nobody really has an answer. Yet.
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