Pneumatic cylinder and working speed

In summary, the conversation is about finding a solution for a pick & place application that involves a cylinder with a stroke length of 200mm and a travel distance of 200mm. The picking time needs to be determined by identifying each motion in the sequence of one cycle and calculating the time for each operation. It is suggested to use an actuator based on a stepper or servo motor for faster, accurate, energy efficient, and clean movements.
  • #1
ganesh1984
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we have a pick & place application so please give the solution for that data
cylinder stoke length 200mm, travel distance 200mm ,what is the picking time?
 
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  • #2
That's what you need to figure out. The procedure starts by identifying every motion, in sequence for one cycle. As an example:

1) Cylinder extend.
2) Grip object.
3) Cylinder retract.
4) Release object.

Then you need to find, specify, or calculate the time for each operation. The sum of those times is the total cycle time.
 
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  • #3
Welcome to PF.

Because air is compressible, a pneumatic actuator will be very fast, but it will not be particularly accurate, unless there is a mechanical stop. You will need to measure the piston position and use that to control air flow with a feedback loop.

Hydraulic fluid is more viscous and not compressible, so will give you slower movements, greater forces, but quicker settling times.

Today you should really consider an actuator based on a stepper or servo motor, driving a ball screw, with a rotary encoder to identify the position. That will be fast, accurate, energy efficient and clean.
 
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What is a pneumatic cylinder?

A pneumatic cylinder is a mechanical device that uses compressed air to produce linear motion. It consists of a piston, a cylinder, and valves that control the flow of air.

How does a pneumatic cylinder work?

When compressed air is introduced into the cylinder, it pushes the piston forward, creating linear motion. The direction of the motion can be controlled by adjusting the valve. When the air is released, the piston returns to its original position.

What are the advantages of using pneumatic cylinders?

Pneumatic cylinders are lightweight, compact, and easy to install. They also have a high power-to-weight ratio, can operate at high speeds, and are relatively low cost compared to other types of actuators.

What factors affect the working speed of a pneumatic cylinder?

The working speed of a pneumatic cylinder depends on the air pressure, cylinder size, and load being moved. Friction and air leaks can also affect the speed. Additionally, the design of the cylinder and valve system can impact the speed.

How can the working speed of a pneumatic cylinder be increased?

The working speed of a pneumatic cylinder can be increased by using a higher air pressure, reducing friction and air leaks, and optimizing the design of the cylinder and valve system. However, it is important to note that there may be limitations based on the load and application of the cylinder.

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