Quote:
Originally Posted by jwfoss
Interesting concept, can you talk to the configuration of your pneumatics system, air tank placement, solenoid selection. It appears to be two 3/4" cylinders by 8" Stroke, are they double acting or spring return and what stroke? Any video of the shooter itself? Thanks.
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Quote:
Originally Posted by JohnFogarty
The Boulder shooter is a simple pneumatic linear punch. A single 3/4" bore 11in stroke double acting cylinder punches the Boulder. It has a white fiberglass rod (a driveway reflector rod) mounted underneath with 3D printed guides that acts as a additional linear guide to help keep the puncher in perfect alignment.
I don't have video of it, but tune in to Palmetto to see it in action.
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To answer the other questions:
Air tank placement: This robot is hell for packaging, and that just happened to be the most logical place to mount them. There wasn't any other mounting surface that was out of the way yet still low enough to clear the low bar.
Solenoid selection: These solenoids were lying around after we converted Sandstorm II from a
pneumatic lift to a
chain-driven lift at Orlando. They're
McMaster 6425K11 according to my records, which is a pretty proven choice when you want that air out in a hurry.
Cylinders: Double-acting. Normally I'd sweat the air consumption, but there's enough time between shots that our air compressor is in good shape topping up.
Video: Sure!
In my opinion, watching someone CAD is about as exciting as watching them sleep. - DampRobot [more] 
24-02-2016, 15:37
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