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Unread 01-02-2010, 13:59
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AKA: Mr. D (Dick DiPasquale)
FRC #0241 (Pinkerton Robotics)
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Re: Bungy and Surgical tubing

Quote:
Originally Posted by Ether View Post
Rule <R71> is quite clear:

<R71> To satisfy multiple constraints associated with safety, consistency, robot inspection, and constructive innovation, no pneumatic parts other than those explicitly permitted by the Pneumatic System Rules may be used on the ROBOT.

The "Pneumatic System Rules" mentioned in the above rule are those listed in Section 8.3.9 "Pneumatic System"


~
Ether-
For the engineering rule that the maximum of 20 inches per second for piston speed, can be ignored if the piston is moving in excess of that only when powered by surgical tubing as opposed to when the movement is caused by pneumatic pressure against the piston?

I am a complete novice at pneumatics and I'm taking an educated guess that it's the seals between the piston and the cylinder that are only rated for a maximum speed of 20 inches per second, and my guess continues that it causes excessive wear is independent of whether pneumatic force or elastic force is used to drive the piston to the excessive speed.

Can anyone with knowledge of pneumatic mechanisms explain?


Thanks!