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Pneumatic Circuits Development with solution problesm 1 9
2022
Mechanical Engineering (Rizal Technological University)
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem1
The piston rod of a pneumatic cylinder (single-acting/double-acting) is to extend
when a push button valve is actuated. When the push button valve is released, the
piston rod retracts. Draw the pneumatic circuit diagram using direct control circuit.
Solution 1: With single-acting cylinder using direct control circuit.
Solution 2: With double-acting cylinder using direct control circuit.
1
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 2
The piston rod of a pneumatic cylinder (single-acting/double-acting) is to extend
when a push button valve is actuated. When the push button valve is released, the
piston rod retracts. Draw the pneumatic circuit diagram using indirect control circuit.
Solution 1: Control of a single-acting cylinder using indirect control circuit.
Solution 2: Control of a double-acting cylinder using indirect control circuit.
2
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 3
The piston rod of a double-acting cylinder is to extend when either a push button
valve 1.2 or pushbutton valve 1.4 is actuated. The piston rod retracts when the push
button valve is released. Draw the pneumatic circuit diagram.
Solution:
3
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 4
The piston rod of a double-acting cylinder is to extend when a push button valve
1.2 and a roller operated valve 1.4 are actuated at the same time. The piston rod
retracts when the one or both valves are released. Draw the pneumatic circuit diagram.
Solution:
4
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 5
The piston rod of a double-acting cylinder is to extend fully forward when a push
button valve 1.2 is actuated momentarily. The piston rod retracts at high speed when
a push button valve 1.3 is actuated. Draw the pneumatic circuit diagram.
Solution:
5
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 6
The piston rod of a double-acting cylinder is to extend fully forward when a push
button valve 1.2 actuated momentarily. When the piston rod has fully extended a roller
operated valve 1.3 is actuated and the piston rod retracts automatically. Draw the
pneumatic circuit diagram. Note: Valve 1.3 is used as a limit switch.
Solution:
6
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 7
The piston rod of a double-acting cylinder is to extend at a slow speed when a
push button valve is actuated. The piston rod retracts at a normal speed when the
valve is released. Draw the pneumatic diagram using direct control circuit.
Solution 1: Using supply-air throttling
Solution 2: Using exhaust-air throttling
7
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 8
The piston rod of a double-acting cylinder is to extend fully forward when a push
button valve 1.2 is actuated momentarily. The piston rod retracts when a push button
valve 1.3 is actuated. The forward speed and return speed could be adjusted
separately. Draw the pneumatic circuit diagram.
Solution:
8
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DEVELOPMENT OF PNEUMATIC CIRCUITS
Problem 9
The piston rod of a double-acting cylinder is to extend fully forward when a push button
valve 1.2 is actuated momentarily. The piston rod retracts automatically 20 seconds
after reaching full extension. Draw the pneumatic circuit diagram.
Positional Sketch:
Solution:
9
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