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Pneumatics is the utilization of compressed air in science and industry in order to perform mechanical work and control. We can either talk about pneumatics or pneumatic systems. In this course we define pneumatics as the control and transfer of power by using compressed air.
Formula Book for Hydraulics and Pneumatics. Fluid and Mechanical Engineering Systems. Department of Management and Engineering. Link ̈oping University. Revised 2008-10-27. Contents. Elementary Equations 1. 1.1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.
Common Pneumatic Formulas. Air Valves help to regulate pressure in the cylinder and are sized for flow capacity (Cv). Cv is based on the specific cylinder stroke & travel time requirements, as well as piston size. Cv is a coefficient that measures the quantity of air a device can pass.
Pneumatic power transmission methods are often the best way to move parts and tooling in industrial machines. These pneumatic systems perform a myriad of tasks in automated equipment such as clamping, gripping, positioning, lifting, pressing, shifting, sorting and stacking.
Design of a cylinder. Most of the cylinders with a piston rod contain the following parts: a tube that is closed on both ends with a cap and head. Inside the tube seen below a piston rod moves with a drive piston. The movement of the piston is triggered by compressed air, controlled by a directional valve.
Gear Displacement Calculation: The volumetric displacement of a gear pump or motor can be approximated by measurement of the internal parts and substituting the values in the following formula: V = 6.03 × W × (2 x D -L) × (L - D ÷ 2) Where. L. = displacement in in3/rev. = gear width in inches.
Basic Valve Sizing: Air valves are sized for flow capacity (Cv) based upon a given cylinder piston size, stroke and travel time requirements. Cv is actually a flow coefficient that measures the amount of air a device can pass. The following formula can be used for air valve sizing: Cv = Area (in²) x Length (ins) x Compression Factor
