Some basic Pneumatic Design Questions

[ttldomination]

Originally Posted by DonRotolo

Cubic inches * # of actuations = air needed. Multiply by (output pressure / storage pressure) (usually 60 and 120) and that's how much storage you need "theoretically". (Tanks have a cubic inch capacity specified) In reality, pressure drops as you draw against it, so it becomes a differential equation... So just round up and add a tank, empirically it will be close. Then test.

So, suppose a piston uses 1 cubic inch of air, and is fired thirty time. As per your math, it would be:

1 cu in * 30 actuations * (60 output psi / 120 psi) ~> 15 cu inches of "theoretical" storage?

And as far as the design question is concerned, my question, which I now understand was slightly misleading, was more in regards to CADing the piston.

Are there nice models with the appropriate motion constraints built in, or do people just model in a pole and restrict its range of motion?

Thanks,
- Sunny G.