The Calculation of Pneumatic Actuator Pipelines

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Abstract

The physical properties of compressed air and the peculiarities of its behavior make the analytical calculation of pneumatic drives quite difficult, requiring high qualification of the staff performing it. Therefore, companies that produce pneumatic automation offer simplified calculation techniques. They are based on the fact that a number of assumptions are made to simplify the selection of pneumatic equipment, and the necessary parameters of the drive operation are then provided by adjusting the throttles and dampers of pneumatic cylinders (or external damping devices). This approach does not always lead to an optimal solution in terms of cost and weight-dimensional characteristics, but allows for a significant reduction in the time for design and the requirements to the qualification of the designer. Existing nomograms are intended for calculation of the main pipelines. Pipelines connecting cylinders and distributors are much smaller in length, but have a smaller diameter, so they also require responsible calculation. Incorrect diameter selection can cause complete loss of drive functionality.