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-   -   Our robot is done! (http://www.chiefdelphi.com/forums/showthread.php?t=61691)

alicen 15-01-2008 19:14
Re: Our robot is done!
 
Don't foget that you must have your flagholder at least 51" high!!:ahh:

Brad Voracek 15-01-2008 21:58
Re: Our robot is done!
 
For the flag holder : there's four inches from the back of the scissor lift to the back of the limitations that the flag will fit on. we had to allocate the room especially. :P

As for hurdling when we get to the top : the manipulator goes up with the lift, so with a slope and lowering that over the first bar, the ball should roll right over, as long as we position it right.

And most people are correct, we don't plan to want to knock the ball off explicitly, but we do think with the cradle on there we will be able to actuate the scissor lift when we are -underneath- the rails to be able to hit it, it's not something we're designing for yet, and if we are able to do it it's a nice accessory ;P

vhcook 15-01-2008 22:13
Re: Our robot is done!
 
It sounds like you're in great shape :D I hope your testing goes well.

Iboshi2 15-01-2008 22:58
Re: Our robot is done!
 
Fantastic design! This allows for a good defensive build and the ability to hurdle! Great! One question- how long does it take to extend the scissorlift to hurdling position?

Brad Voracek 15-01-2008 23:02
Re: Our robot is done!
 
Good question, haha, I'll get back to you. From preliminary tests with actuators it seems like it will go up rather fast, and we actually may have to run down the pressure from max on these things. We're now using, after more testing today, 2 2 inch bore 12 inch stroke actuators, and we plan to tweak with the psi to get them to run at a reasonable speed. I don't see speed being an issue though, and we're shooting for, I don't want to sound unrealistic as I suppose I don't really know exactly, but maybe around ~6 seconds? Five? I'll let you know as the weeks progress.

1619Aaron 16-01-2008 16:07
Re: Our robot is done!
 
Go with the scissor lift. We did that in 2005 and it worked great. The only problem was our drive base... >< But, we did win the Engineering Inspiration Award with it. ;) First rookie team to ever win it! Anyway, it was awesome.

camtunkpa 16-01-2008 16:20
Re: Our robot is done!
 
Quote:
Originally Posted by Brad Voracek (Post 678930)
Good question, haha, I'll get back to you. From preliminary tests with actuators it seems like it will go up rather fast, and we actually may have to run down the pressure from max on these things. We're now using, after more testing today, 2 2 inch bore 12 inch stroke actuators, and we plan to tweak with the psi to get them to run at a reasonable speed. I don't see speed being an issue though, and we're shooting for, I don't want to sound unrealistic as I suppose I don't really know exactly, but maybe around ~6 seconds? Five? I'll let you know as the weeks progress.
Just a suggestion/helpful hint.....A better way to slow down the cylinder actuation would be to use adjustable flow controls on the cylinders. :cool:

artdutra04 16-01-2008 16:28
Re: Our robot is done!
 
Quote:
Originally Posted by Brad Voracek (Post 678105)
Here's what will probably end up being our final design for this year, with the chassis and the scissor lift (that's what's under that sheet metal). I know everyone says no scissor lifts, but I think we can do it, and it's one of the more efficient methods we thought of, for what we want to do.

... don't mind the cardboard ball. ;P

Questions?
If that's not a prototype manipulator, you may want to make your manipulator a lot more rigid.

Since the two claws only look like they are about 0.5" diameter aluminum tubing, as soon as another team runs into those, or your driver accidentally runs into the wall at the far end of the playing field, they are going to be bent. There are only so many times you can bend them back until they snap.

boonski 16-01-2008 17:00
Re: Our robot is done!
 
Seems like a good idea. Seriously going for a scissor lift? Good Luck!
What happened to your real trackball? Did it pop?

Brad Voracek 16-01-2008 21:31
Re: Our robot is done!
 
Camtunkpa, yeah sorry, that's what I meant... I said psi but I was thinking of those =/.


Oh, that's -definitely- a prototype manipulator. Thanks for the input though, we plan to make that muchh more rigid, probably using ~3/4 or 1 inch square tubing in the end. Heheh.


... and yeah our ball popped. =( oye. new ones tomorrow hopefully.

Seraph117 16-01-2008 21:33
Re: Our robot is done!
 
if that was really your final design, i would eat my hat :D

MOE 16-01-2008 22:33
Re: Our robot is done!
 
:yikes: YEP That is right
GOOD LUCK from Team 88 TJ2 and MOE
:D

Brad Voracek 16-01-2008 23:50
Re: Our robot is done!
 
Quote:
Originally Posted by Seraph117 (Post 679712)
if that was really your final design, i would eat my hat :D
Get ready to eat your hat then. ;P

Seriously though, unless we find a major flaw, this is the -design- we are going to go with. Not the exact mechanisms or anything... but as I said those are the ideas we are running with.

teammember_342 21-01-2008 20:19
Re: Our robot is done!
 
You will be in the finals for sure!:rolleyes:

team1203 4life 21-01-2008 20:21
Re: Our robot is done!
 
how fast will your robot go in feet per second


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