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Published byAdrian Perkins Modified over 10 years ago
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Air! A pneumatic assembly is one that converts energy stored in compressed air to mechanical energy. Electrical Energy Compressed air Mechanical force Compressor Release of air
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False! Tiny investment, major returns Requires only some heavy components Pneumatics are usually very light in comparison to motors! › No heavy motors › No gearboxes › No sprockets, etc.
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FIRST made the rules much nicer this past year. Unlimited air storage Much lighter compressor
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Putting into motion Motors rotate, cylinders extend and retract Good in different situations Motors Pneumatics
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Pneumatics – good for fixed distances of travel Motors – good for infinite travel Examples: › Raising and lowering arm: fixed › Extending and retracting arm: fixed › Driving – infinite › Operating a belt – infinite › Spinning a wheel – infinite › Opening and closing a claw - fixed
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Pneumatics are not heavy! If you need infinite motion, use motors. If you need a fixed distance of travel, use pneumatics. › Don’t try to use one for the other!
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How to build them!
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New (“Rookie”) Compressor Old Compressor
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Simple Concept – stores air Unlimited quantity
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FIRST requires that: › Max storage pressure: 120 psi › Max working pressure: 60 psi Regulator does that! In line between tanks and cylinders
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What actually does the moving!
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Bore Diameter: › The diameter of the bore (inside) of the cylinder. Increasing this increases force applied by the cylinder, but also increases air used. Stroke Length: › The distance the piston travels when extending or retracting. Increasing this increases air used.
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The valve that controls air flow Electronically controlled 2 types › Single-solenoid › Double-solenoid
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Tubing Brass fittings Safety pressure release valve Tube connectors Pressure sensor Teflon tape
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