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#1
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Need number help buddies
How much force can be produced by one 3/4 inch piston and how fast does it go in meters per second. Would really appreciate the help.
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#2
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Re: Need number help buddies
First of all, how much PSI are you running to it? I'm assuming 60psi, so I'll calculate it as such.
60*.75*3.14 = 141.372 You will produce approximately 141.372 Newtons of force. Using some kinematics equations, you can find the speed. |
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#3
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Re: Need number help buddies
Quote:
The correct calculation is 60 lbf/in^2 x pi()*(0.75^2)/4 in^2 = 26.5 lbf. That force could also be expressed as 118 Newtons. Last edited by Richard Wallace : 16-01-2008 at 19:40. Reason: units |
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#4
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Re: Need number help buddies
My mistake. Thanks for the correction, Richard.
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#5
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Re: Need number help buddies
OK, well wouldn't another important question be:
Over how much time does this piston extend, as that is the main factor in how useful this force is. |
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#6
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Re: Need number help buddies
wow you guys are prompt and very helpful. the piston to my knowledge extends in about 1/4 -1/2 second, but the force was my really needed information , so thank you all so much.
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#7
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Re: Need number help buddies
does anyone know what the force needed to fire the ball over or at least the equation to find it.
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#8
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Re: Need number help buddies
Our last prototype, which was pretty crude and not very efficient, used 135 ft-lbs. to launch the ball 8" vertically. We invested in a 250 ft-lbs. gas spring and are creating a complex lever system to add some extra oomph, but I wouldn't invest much time in attempting to use pneumatics to fire a ball.
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#9
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Re: Need number help buddies
Quote:
What if you fire off 3 3/4 inch pistons to break the balls needed initial velocity then 1/2 second later fire off 5 more with longer shafts. at 26.5 ftlbs each it should work and the increase shaft size will direct it and add a kick. now does this work math wise or am i mistaken. |
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#10
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Re: Need number help buddies
The exact speed at which a cylinder fires will depend on the stroke length, inner diameter of the tubing, which solenoids you're using, and your accumulator configuration. Generally speaking, however, cylinders fired without flow controls will extend in well under a second.
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#11
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Re: Need number help buddies
Ok, i'm the head of pneumatics for my first year team, what is the best configuration for a single piston at a 45 degree angle? can you please explain how everything work together?
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#12
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Re: Need number help buddies
Quote:
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