Help with pneumatic?
Help with pneumatic?
(OP)
Hey all,
I 'm working with something I've never done before , so I thought to ask if you can help me.
I'll open a window 100 degrees but I have to install the pneumatic air cylinder and I do not know how to proceed .
Where's the best place to assembly the air cylinder ?
How do you calculate ?
All tips and suggestions are welcome.

Br Siegomaestro





RE: Help with pneumatic?
http://www.amazon.com/s/?ie=UTF8&keywords=gas+...
RE: Help with pneumatic?
Simple mechanics problem, knowing the compressed and extended sizes you can figure out where it will fit, then knowing the weight of the window you can check the loads.
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P.E. Metallurgy, Plymouth Tube
RE: Help with pneumatic?
The more reputable strut manufacturers should give you guidelines on this & even help with the design, I believe our vendor for something that may be similar use ACE gas springs http://ace-ace.com/wEnglisch/pages/Produkte/index....
Gas strut performance will normally vary with temperature - both environment temp but also the heat they generate from repeated operation. Can make setting the force tricky on adjustable struts.
You may be able to come up with an 'over center' implementation where at top of flap opening the struts are helping to open it/hold it open but when it gets nearly closed the gas struts actually help to close it. This can help tune the required closing force as well as helping keep it closed.
Also consider safety - e.g. do you need some kind of locking device to keep it open in the event of a gas strut failure. Struts with this built in are available but the ones I've seen are a little kludgey and I wasn't too impressed.
Also consider ergonomics of what the maximum closing and opening forces should be to avoid strain on the operator.
Sorry can't say much more due to IP concerns but will say that we've been working with a vendor who makes a vaguely similar enclosure for months now trying to optimize the force.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Help with pneumatic?
RE: Help with pneumatic?
"so no hot air comes out" Hot air? How hot? That could effect your cylinder.
How much of a seal are you talking about? Air-tight, or just relatively leak free? Is the pressure inside above ambient?
What is a "strip valve"? Do you mean directional valve?
To size the cylinder you have to create a free-body diagram with all the connection points in the worst-case position to calculate how the weight of the door translates into force on the cylinder.
You may not know how to do this, but you have to start somewhere. Make a diagram of what you think the cylinder mounting, connections, and stroke might look like, and go from there.
Also, I would plan on two cylinders to prevent warping the door.
RE: Help with pneumatic?
RE: Help with pneumatic?
RE: Help with pneumatic?
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P.E. Metallurgy, Plymouth Tube
RE: Help with pneumatic?
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