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Unread 14-12-2004, 12:30
greencactus3 greencactus3 is offline
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Re: Mulit-postioning with pnuematics this year?

Quote:
Originally Posted by Liz*599
the way our team achieved three positions from each joint, as opposed to two, was by coupling two cylinders together and then only fireing them independently, which worked very well for us.
if you used two separate stroke cylinders, you would be able to get 4 positions. 0-0, 0-1, 1-0, and 1-1 with the same stroke cylinders, 1-0 amd 0-1 are the same so only3.

and by the way.. if you are only using a single acting cylinder (ex. spring loaded or bungee loaded or just plain gravity drivin back, mulit positioning is possible with two single solenoids. i have used this method and the "normal" double and single solenoids multipositioning both with no problems ever. and for people who still dont quite get how multipositioning works, think of when you presss against the force of the air in a cylinder (only try it with a small diameter cylinder running on low pressure or you may hurt yourself). by pushing in a rod that is pushed out by the air. with the right amount of force to the rod from your pushing, the rod will stay "inbetween" the full out and full in stroke. that is multipositioning. only you dont use your hands to push in the rod but something else, gravity, elastic, or air (pressure).


*edit* oh and remember, some solenoids wont work with zero pressure buildup in the input side. (sorry, can someone word that better?)

Last edited by greencactus3 : 14-12-2004 at 12:32.