thomas shupe a

7/31/2019 Thomas Shupe A

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Pneumatic Actuators

Thomas Shupe

ECE 5320 Mechatronics

Assignment #1


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Outline References To explore further What are pneumatic actuators?

Different types of actuators Major applications Working principles

Major specifications Limitations Cost


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References Pneumatic Actuators Linear and Rotary WHITE

PAPER by Jimmy Simpson (CFPS, CFPMM, CFPAI), Sr. Advisor for U.S. Car Projectshttp://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htm

http://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpg

http://en.wikipedia.org/wiki/Pneumatic_actuator http://dictionary.reference.com/browse/pneumatic
http://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htmhttp://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htmhttp://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpghttp://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpghttp://en.wikipedia.org/wiki/Pneumatic_actuatorhttp://dictionary.reference.com/browse/pneumatichttp://dictionary.reference.com/browse/pneumatichttp://en.wikipedia.org/wiki/Pneumatic_actuatorhttp://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpghttp://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpghttp://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpghttp://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htmhttp://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htm


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To Explore Further

http://en.wikipedia.org/wiki/Pneumatic_artif icial_muscles

http://www.personal.psu.edu/mjl145/lesson_plan.htm
http://en.wikipedia.org/wiki/Pneumatic_artificial_muscleshttp://en.wikipedia.org/wiki/Pneumatic_artificial_muscleshttp://en.wikipedia.org/wiki/Pneumatic_artificial_muscleshttp://en.wikipedia.org/wiki/Pneumatic_artificial_muscles


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What are Pneumatic Actuators?

Dictionary.Com gives the followingdefinition of pneumatic: operated by air or by the pressure or exhaustion of air http://dictionary.reference.com/browse/pneumatic

A pnuematic actuator is a transducer thatconverts energy (typically from

compressed air) into motion
http://dictionary.reference.com/browse/pneumatichttp://dictionary.reference.com/browse/pneumatic


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Types of Pneumatic Actuators?

Tie Rod Cylinders (linear actuators)

Rotary Actuators (air motors) Grippers

Pneumatic Control Valve


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Tie Rod Cylinders

www.control-line.com/cylinders.asp

Provides linear motion fromcompressed air

Single or Double Action
http://www.control-line.com/cylinders.asphttp://www.control-line.com/cylinders.asphttp://www.control-line.com/cylinders.asphttp://www.control-line.com/cylinders.asp


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Rotary Actuator (air motor)4 Types:

1. Rotary Vane

2. Gear

3. Turbine4. Piston

www.tdi-turbotwin.com


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Pneumatic Gripper Involves linear or angular

motion Often used to pick and

place objects Generally has fully open

and fully closed settings

and does not have controlto go to intermediatepositions

www.eu-nited-robotics.net/node/152
http://www.eu-nited-robotics.net/node/152http://www.eu-nited-robotics.net/node/152http://www.eu-nited-robotics.net/node/152http://www.eu-nited-robotics.net/node/152http://www.eu-nited-robotics.net/node/152http://www.eu-nited-robotics.net/node/152


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Pneumatic Control Valve

Uses air pressure toopen and close the

valve.Used in conjunctionwith a electronic

controller

:// http www.engineersedge.com/hydraulic/pneumatic_actuator.htm


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Linear Actuator Application

http://www.gutenberg.org/files/15617/15617-h/images/pic_p161.jpg

Early air compressor/Jack hammer

Related to the tie-rod cylinder


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Tie Rod Cylinder Application

These twocylinders give

this labelingmachine a quickway to apply the

labels


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Rotary Actuator Application

Rotary actuator used in machineapplications

Also used aspower tools

http://www.powertoolsuk.co.uk/webcat/pics/drap er/79566.jpg


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Pneumatic Gripper Applications

Used inrobotic

applications

http://www.strobotics.com/r17.htm


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Pneumatic Control Valve Applicatoins

Used to controlfluid flow

Can preciselycontrol flow or can provideon/off type of control

:// http www.engineersedge.com/hydraulic/pneumatic_actuator.htm


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Working Principles(Linear Pneumatic Actuators)

Convert pneumatic energy into mechanicalenergy to produce work

There is a hollow cylinder with a piston inside.

Air pushes the piston causing motion in thecylinder, the piston is connected to an externalrod that provides a means to use the motion.

The actuator can be either single or doubleaction; either a spring etc. returns the actuator or air will return it via multiple ports.

http://www.ifps.org/Education/WhitePapers/PneumaticCylinders.htm


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Working Principles(Linear Pneumatic Actuators)



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Working Principles(Rotary Pneumatic Actuators)

Rotary actuators are used to convertpotential pneumatic energy intomechanical energy.

Rotary actuators produce torque Commonly called air motors

In most cases rotary actuators are notchosen for their efficiencies, but for their power, speed and torque.


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Working Principles(Rotary Pneumatic Actuators)



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Working Principles(Grippers)

Converts potential pneumatic energy intomechanical energy

Creates either linear or angular motion of gripper fingers

Forces are proportional to pressure andarea.


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Working Principles(Control Valve)

Operates by a combination of force fromthe air and an opposing spring force. Theactuator positions the control valve bytransmitting its motion through the stem


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Major Specifications

Required Air Flow Rate Max Pressure/Required Pressure

Capable Force Capable Torque Max RPM

Linear Velocity


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Limitations

Compressibility of air makes movementand positioning imprecise

Not capable of heavy work (250psi vs.10,000 psi)

Maintenance crews rarely fix an air leak

http://www.personal.psu.edu/mjl145/lesson_plan.htm


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Cost of Pneumatic Actuators

Pneumatic actuators range from as low as$15 on up to tens of thousands of dollarsdepending on quality, size, application etc.


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Where to Buy

http://compact4.rtrk.com

http://www.bimba.com/products/

http://www.festo.com
http://compact4.rtrk.com/http://www.bimba.com/products/http://www.bimba.com/products/http://compact4.rtrk.com/

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