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Unread 15-10-2005, 18:09
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Re: Oscillating a pnuematics valve?

Quote:
Originally Posted by Rickertsen2
I have seen applications in the textile industry where pneumatic valves are actuated at speeds of over a hundred times a second all day long. (I was amazed to learn that pretty ordinary valves are capable of this). As long as you use a pretty solid valve, you should be ok. I don't know how fast any of the valves in the kit are but you don't need them to be all that fast. Keep in mind that that your setup will almost instantly drain your air supply if you are describing what i think you are.
Darn, you're right. I didn't consider this. Perhaps if a flow control was used you could slow the air loss on the open side long enough to correct, then close it again. I'm considering an arm load where most of the time the load force is enough to allow control by opening only the lifting side for a moment. However, the arm itself wouldn't be heavy enough to lower the arm if it's not carrying something, so you would have to force it down using the other isde of the cylinder. Any ideas?
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