Pneumatic cylinder and working speed

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SUMMARY

The discussion focuses on optimizing the working speed of a pick and place application using pneumatic cylinders. Key steps include calculating the total cycle time by measuring the duration of each operation: extending the cylinder, gripping the object, retracting, and releasing. While pneumatic actuators offer speed, they lack precision without mechanical stops and feedback loops. The conversation suggests considering stepper or servo motors with ball screws and rotary encoders for enhanced speed, accuracy, and energy efficiency.

PREREQUISITES
  • Understanding of pneumatic cylinder operation and cycle time calculation
  • Knowledge of feedback control systems for position measurement
  • Familiarity with stepper and servo motor technologies
  • Basic principles of mechanical stops in automation
NEXT STEPS
  • Research pneumatic cylinder cycle time calculations and optimization techniques
  • Explore feedback control systems for pneumatic actuators
  • Learn about stepper and servo motor integration with ball screws
  • Investigate rotary encoder applications in automation for precise positioning
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Engineers and technicians involved in automation, robotics developers, and anyone seeking to enhance the efficiency and accuracy of pick and place systems.

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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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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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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