View Full Version : What are pneumatics?
Does anybody wanna help a rookie out?..What are pneumatics?
Mike Schroeder
14-10-2002, 16:29
Ladies and Gentlemen the Questions and Comments made by Aignam do not directly represent those of team 25 Raider Robotix
Joe Matt
14-10-2002, 16:36
If something dosn't horrably go wrong in my brain between my robotics knoweldge and my typeing, it's basicly parts moved by air. More complexly, the air is pushed into a tube, and then the other part of the tube move us and down, like a pump. I think, of course, havn't used pnumatics in a while, mostly hydrolics.
lol thanks for clarifying that JosephM, and as for you Mr. Volcano, thanks for backing me up...lol...im just a stupid freshman anyways what do I know? :D
tjrage_25
14-10-2002, 17:57
pneumatics = air
hyrdaulics = fluid
woops you just replied to a post i just deleted anyway hear is something to download and read:
:edit:
Argggg I can't download it. Anyway go to http://www.longnow.org/rhino/tips.htm for everything you need to know about pneumatics. Abeit its not the same competition but it has a file from first about pneumatics.
Originally posted by tjrage_25
pneumatics = air
hyrdaulics = fluid
If you want to be technical, air IS a fluid. Hydraulics really means liquid-based. They are much more powerful than pneumatics and are what drives most heavy machinery. FIRST, however, doesn't let us use hydraulics (probably a good thing), and limits us to only using pneumatics that move in-and-out in straight lines.
Joe Matt
14-10-2002, 19:27
Ha! LOL!
Love this pic!
http://www.longnow.org/rhino/pix/BlowUpTank.GIF
Jim Giacchi
14-10-2002, 19:49
Originally posted by rbayer
They are much more powerful than pneumatics and are what drives most heavy machinery. FIRST, however, doesn't let us use hydraulics (probably a good thing),
Its not that there more powerful air can be just as powerful, its the fact that since hydraulics uses a liquid instead of a gas its impossible to back drive, because a liquid is non-compressible, which makes it better for cranes and such when exact positioning is critical, where a gas can be compressed. So if you push against a hydraulic it won't move, but if you push against a pnuematic it will bounce. (I hope that made sense)
*edit* And the main reason first doesn't allow us to use hydraulics is because a blown hydarulic line is A LOT messier than a leaky air line. *edit*
Katie Reynolds
14-10-2002, 21:26
Pneumatics = air
Hydraulics = "water pneumatics" (according to *someone* on my team) :rolleyes:
- Katie
Tyler Olds
14-10-2002, 21:28
Originally posted by Katie Reynolds
Pneumatics = air
Hydraulics = "water pneumatics" (according to *someone* on my team) :rolleyes:
- Katie
Now, there's nothing wrong with that - not my fault I didn't know what hydraulics were!
team222badbrad
14-10-2002, 21:55
http://www.howstuffworks.com/nail-gun4.htm
Here is an example of Pneumatics!
Clark Gilbert
14-10-2002, 22:42
Here is a simple overview i pulled from some FIRST pneumatics powerpoint printout......
What is Pneumatics?
Pneumatics is compressed air being used to power movement.
Pneumatics is somewhat like Hydraulics, but without the messy liquids.
Pneumatics is clean, but it generates lower powered movements than Hydraulics.
:D
Ricky Q.
14-10-2002, 22:53
in tyler's defense, kt put that up there, it was not him as she was on his account.
Ken Leung
14-10-2002, 23:07
On the simplest terms, pneumatic work by air pressure.
Remember when your science teacher tells you the thin air around us have an atmospheric pressure? That pressure is a force that exist just because there's a whole lot of air around us. So, even thin around you can hardly touch can have force.
So, here's how pneumatic works in the FIRST robotics kit of parts.
There are air tanks that store airs in them, a compressor that push air into the tanks, and actuators that transfer air pressure/flow into motion. First, the compressor get as much air as possible into the air tank, and the more air there are inside the tank, the more pressure the air has. The pressure is measured in psi, which is Pound per Square Inch. The higher the psi is, the larger the force is on a surface.
There are electronics components you can hook up the tanks and actuators to, that can regulate air flow from the tanks to the actuators. So when the driver push a button, the air tank release some air into the actuator, and the air going into the actuator have a pressure that push behind a metal rode inside the actuator, and that pushes the metal rode out.
Whats the big deal about this? Well, it means now you have a way to move something on the robot. A linear motion with the actuator in this case. Before, you just have some air tank and a compressor sitting there making noise, now, you have some air tank, a compressor sitting there make noise, AND an actuator poking forward and pulling backward.
Teams take advantage of this motion to 1.) switch gears, 2.) trigger devices on their robot, 3.) push arms around, 4.) lift different sets of wheels from the ground, plus many more applications.
Just think of pneumatics as batteries and motors. The air compressor is like a battery that add power into the battery, only in this case its adding air into the air tank. And the air tanks, acting like batteries, supply power to the motors, only in this case its supplying air into pneumatic actuators. And the actuators act like motors using electricity and do work, only in this case it uses air to do work.
That's the basic of penuatics. If you want to know more details, just post the question and I am sure lots of people around here are willing to help answer it.
And don't be shy asking questions. The more you ask, the more you learn.
Joe Ross
15-10-2002, 21:50
Originally posted by Ken L
And don't be shy asking questions. The more you ask, the more you learn.
And since Mr. Volcano doesn't seem to want you to ask questions on this board, perhaps you should ask him your questions. I'm sure he'd be happy to help you graciously and professionally.
I think pneumatics are used more for when you need quick movements and hydraulics focus more on power than speed.
Mike Schroeder
16-10-2002, 01:55
Originally posted by Mr.Volcano
Ladies and Gentlemen the Questions and Comments made by Aignam do not directly represent those of team 25 Raider Robotix
whoa quoting myself a new low,
anywho I would JUst like to Ricind (sp?) (take back) my statement that i made. It appears that i was hurting the freshmen but in all accuallity i was just joking so before people start calling in mafia hits and i am killed doing the white boy dance. I would like everyone to know
I was just joking
Johca_Gaorl
16-10-2002, 07:18
Couldn't pneumatics include any type of gas? Not just air?
Wayne C.
16-10-2002, 12:37
sure any gas could work
for example - how about a combo of air and diesel fumes?-
OH wait a minute- something is terribly wrong!!!!
(The rantings of a member under Pressure!!!)
WC;)
Wayne C.
16-10-2002, 12:38
PS- DONT DO THAT!!!! (safety disclaimer)
(if curious check your diesel engine manual)
WC:cool:
Johca_Gaorl
16-10-2002, 18:25
Originally posted by Wayne C.
(if curious check your diesel engine manual)
LOL. That's not what I meant! that would be bad, considering diesel is designed to ignite w/o a spark.
Greg Ross
16-10-2002, 19:48
Originally posted by Johca_Gaorl
LOL. That's not what I meant! that would be bad, considering diesel is designed to ignite w/o a spark.
I don't have my Diesel manual handy.;) Wouldn't it take considerably more pressure to ignite the fumes at room temperature than you're able to get with a FIRST (tm) compressor? (Not that I'm suggesting anyone should try it.:eek: )
Johca_Gaorl
16-10-2002, 21:17
a typical diesel compresses at a ratio of 14:1 to as high as 25:1
Someone figure it out, I dunno the specs of the FIRST stuff, we don't use pneumatics.
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