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#1
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Re: pic: Team 319 - Big Bad Bob's Lift System
Quote:
P.S. We haven't done a complete two robot lift yet, but it shouldn't matter. The pneumatic solenoids require power to switch in and to swith out, thus if we push the "up" button even a millisecond before the end of the match, it will still go up. P.P.S. Our lift platforms and the feet we put on our pneumatics are removable. So, if there is a robot in our alliance that can lift better than us, we just remove those parts and we have almost 2 inches of clearance. Last edited by Ty Tremblay : 07-02-2007 at 12:24. |
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#2
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Re: pic: Team 319 - Big Bad Bob's Lift System
That's cool!!!!
Good idea to lower the pressure. We found that the 2" pistons only dropped the air pressure by 18 pounds when actuated. We are able to lift 200 pounds on each ramp using just one piston. |
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#3
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Re: pic: Team 319 - Big Bad Bob's Lift System
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Is there something I'm missing? |
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#4
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Re: pic: Team 319 - Big Bad Bob's Lift System
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#5
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Re: pic: Team 319 - Big Bad Bob's Lift System
hey u guys i have a question about the arm. if the arm is stored just like in the picture and there is a pneumatics cylinder on the ends of the wings (also like in the picture)... when the wings are stored how does the arm get its full range of motion?
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#6
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Re: pic: Team 319 - Big Bad Bob's Lift System
clever idea with the pneumatic distribution, hope it works well for you. Also great idea to make them detachable, we might have to adapt that to our robot
not trying to cause any fights, but lil lavery try and be more supportive of teams.. i read your posts all over the place and you are constantly trying to figure out why things arent going to work... this is FIRST, we are putting innovative thinking to the test, ive seen some strange ideas become some of the best robots. keep posting tho, just be aware of what your saying. ![]() |
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#7
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Re: pic: Team 319 - Big Bad Bob's Lift System
I'd rather be warned than have a system fail, but people generally tend to know what they are doing.
Great idea, I like the fact that it can be deployed 1 second before the match ends... could very well come in handy!!! ![]() |
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#8
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Re: pic: Team 319 - Big Bad Bob's Lift System
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#9
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Re: pic: Team 319 - Big Bad Bob's Lift System
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In this case though, 30 psi wouldn't have had enough force (as it was stated they may be using), but the 60psi they later said they were using generated plenty of force. Luckily here, there was no issue. ![]() Back on topic. What kind of material are you going to put on top of the "wings" and what method are you using to deploy them? |
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#10
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Re: pic: Team 319 - Big Bad Bob's Lift System
We have expanded aluminum going on top of the wings. But it was too heavy so we cut a series of diamond patterns out of it, making it perforated expanded aluminium. The platforms fall on their own, so we just pull a pin with a servo.
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#11
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Re: pic: Team 319 - Big Bad Bob's Lift System
Are you worried about teams pulling out the pneumatic hosing running to the outer cylinders or hitting and damaging the cylinders themselves?
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#12
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Re: pic: Team 319 - Big Bad Bob's Lift System
Wow!
Look's awesome, you guys! I can't wait to see this at BAE and maybe at the Balloon Rally this year! ;D It's amazing what a handful of students and a few mentors can do. |
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#13
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Re: pic: Team 319 - Big Bad Bob's Lift System
wow.... Thats really some nice engineering.. I really like the way you've put thought into the machining of near every single individual piece of aluminum. Hope to see you at the championship games!
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#14
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Re: pic: Team 319 - Big Bad Bob's Lift System
how much flex do you get in your wings when there is 148 lbs on them?
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#15
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Re: pic: Team 319 - Big Bad Bob's Lift System
There's only one 12" long x 2" bore outrigger piston (we figured that if we were going to lift 1 robot, we would tell them to get on that side). Therefore, the arm can go around it when it deploys in autonomous mode.
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