Pneumatic Cylinder

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Questions and Answers

What is the function of pneumatic system devices?

To convert compressed air energy into mechanical energy

What is a Single Acting Cylinder used for?

For tasks that do not require a significant amount of force

What are the typical size limits for commonly produced single-acting cylinders?

Up to 100 mm in diameter and a stroke of up to 100 mm

Which of the following is a component of a single-acting cylinder?

<p>All of the above (D)</p> Signup and view all the answers

What is the function of a double acting cylinder?

<p>Movement in both directions using air pressure</p> Signup and view all the answers

What is the primary characteristic of a double-acting cylinder without cushioning?

<p>It relies on air pressure for movement in both directions.</p> Signup and view all the answers

What is the purpose of using air as a cushion in double-acting cylinders?

<p>To prevent impacts between the piston and the cylinder head/end cap</p> Signup and view all the answers

Describe a double end rod cylinder.

<p>It features piston rods that extend from both ends</p> Signup and view all the answers

What is the range of motion for the piston rod in a rotary actuator?

<p>Up to 360 degrees</p> Signup and view all the answers

What is an air motor typically used for?

<p>Applications involving high impacts or requiring air pressure to strike a workpiece beyond normal operations</p> Signup and view all the answers

How do grippers function?

<p>Using cylinders to grab or manipulate various material shapes and sizes</p> Signup and view all the answers

What are vacuum generators used for?

<p>To adhere or hold objects</p> Signup and view all the answers

Flashcards

Pneumatic Actuators

Devices that operate using compressed air to convert pneumatic energy into mechanical work.

Single Acting Cylinder

A cylinder where the air pressure acts in only one direction, and a spring returns it to its original position.

Double Acting Cylinder

A Cylinder where air pressure can be applied in both directions to extend and retract the piston rod.

Cylinder Without Cushioning

A type of double-acting cylinder without cushioning; it uses air pressure for both extending and retracting the piston rod.

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Cylinder with Air Cushion

A type of double-acting cylinder that uses air cushions to slow down the piston near the end of its stroke

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Double End Rod Cylinder

A cylinder with a rod extending from both ends of the piston, providing equal force and speed in both directions.

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Rotary Actuator

An actuator that produces rotary motion, typically used for applications requiring angular movement.

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Air Motor

A motor that uses compressed air as its power source to generate rotary motion.

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Grippers

Devices that use pneumatic cylinders to grip and hold objects. They are used to pick and place objects in automated systems.

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Grippers - Finger Separating

Grippers where the fingers move apart from each other to grasp an object.

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Parallel Grippers

Grippers in which the fingers move parallel to each other to grasp an object .

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Vacuum Generators

Devices that generate vacuum to grip objects. These are used to lift and move parts with smooth, non-porous surfaces.

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Piston

Component of a single-acting cylinder that moves within the cylinder tube, driven by air pressure in one direction and returned by a spring.

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Piston Rod

Component of a single-acting cylinder that extends from the piston, transmitting force to the external environment.

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Return Spring

Component of a single-acting cylinder used to return the piston to its original position when air pressure is removed.

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Base End Cover

End component of a single-acting cylinder that closes the cylinder tube, located at the base end.

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Head End Cover

Component of a single-acting cylinder that closes the cylinder tube, located at the head end.

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Cylinder Tube

The outer shell of a single-acting cylinder that contains the piston, air pressure, and other internal components.

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Pressure Connection

Connection point on a single-acting cylinder used to supply air pressure to the piston.

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Vent Hole

A hole in a single-acting cylinder used to vent air from the cylinder when the piston retracts.

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Study Notes

  • Pneumatic system devices function to convert compressed air energy into mechanical work.

Single Acting Cylinder

  • Single acting cylinders are suitable for applications requiring less force.
  • The acting force is countered by a spring.
  • Commonly produced with a bore size of no more than 100 mm and a stroke of no more than 100 mm.

Single Acting Cylinder Components

  • Piston
  • Piston rod
  • Return spring
  • Base end cover
  • Head end cover
  • Cylinder tube
  • Pressure connection
  • Vent hole
  • Bash and sealing element
  • Piston seal

Double Acting Cylinder

  • Double acting cylinders.

Double Acting Cylinder Components

  • Seal and piston
  • Cylinder tube
  • Air seal
  • Piston rod

Double Acting Cylinder (No Cushioning)

  • Double acting cylinders without cushioning use air pressure for movement in both directions.
  • Affordable option suitable for low-speed applications.

Double Acting Cylinder (Cushioning)

  • Double acting cylinders with cushioning are designed for higher speed operations.
  • Movement relies on air pressure.
  • Air cushioning is used to prevent impact between the piston and end caps at the end of the stroke.

Double End Rod Cylinder

  • Double end rod cylinders share a similar structure to single acting cylinders but feature two piston rods.
  • Both rods extend from either side and move in alternating directions.

Rotary Actuators

  • Rotary actuators feature rods that rotate back and forth but are limited to a maximum rotation of 360°.
  • Rotation can be controlled clockwise or counterclockwise.
  • Applications require specification of the actuator's rotation angle

Air Motor

  • Air motors are used in high-impact applications or those needing air pressure to impact a workpiece beyond normal tasks, such as drilling.
  • Can rotate 360 degrees.

Grippers

  • Grippers employ mechanical mechanisms to work in conjunction with cylinders to grip materials or workpieces of various shapes.
  • Includes finger separation.

Grippers (Parallel End Type)

  • Grippers with parallel fingers.

Vacuum Generators

  • Vacuum generators are used for vacuuming and gripping objects.
  • Operation is dependent on the design of the rubber cup.

Pneumatic Symbols

  • Several Pneumatic symbols that represent
    • Single acting cylinder with air pressure
    • Spring return
    • Double ended piston, double acting cylinder
    • Single cylinder with spring return etc
  • Motor symbols represented include
    • Single driven with adjustable pressure
    • Double drive motor with adjustable pressure
    • Rotate Cylinder
  • The document features symbols for work pieces as well
    • Two way operated
    • Single way operated
    • Parallel movement
    • NC/NO push types

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