Issue link: https://onenorgren.uberflip.com/i/1463811
1. Pick and Place/Material Handling: Pick & Place/Material Handling refers to lifting, gripping, rotating and positioning of an object through the use of a vacuum generator with a vacuum cup. Use the Equation: Force = Pressure X Area to determine: » Liing capacity of the generator and cup » Required vacuum area, i.e. diameter of the cup – see cup section for a more detailed explanation » Required vacuum level of vacuum generator Safety Factors FORCE AREA "d" OBJECT WEIGHT SAFETY FACTOR * Lbs (Kg) CONVERT "Hg TO PSI, DIVIDE BY 2 (2Hg" = 1 PSI) AREA = p(d /4) 2 p = 3.14 PSI (Kpa) in (cm ) 2 2 X = PRESSURE or AREA = pr 2 Safety Factors Horizontal li = 2 Safety factor of 2 is recommended when cup face is in horizontal position. Vertical li = 4 Safety factor of 4 is recommended when cup face is in vertical position. Force = Pressure x Area where: F = the weight of the objects in lbs [kg] multiplied by the safety factor above P = the expected vacuum level in PSI [Kpa], remember to convert "Hg to PSI by dividing by 2 A = the area of the Vacuum Cup measured in square inches. Use the equation A = p d 2 3 Vacuum Level Ranges: > "L", "X" or "F" Series 0-10"Hg, [0 to 339mbar] for high efficiency applications > "M", "Y" or "D" Series 0-20"Hg, [0 to 677mbar] for low operating pressure applications > "H", "Z" or "S" Series 0-28"Hg, [0 to 948mbar] for high flow applications 3 Types of Material: > Non-porous materials: steel, glass laminated chipboard, rigid plastic, semiconductors, etc. > Porous materials: corrugated, wood, foam, felt, woven materials, objects with extremely rough or uneven surfaces > Flexible materials: plastic films, baked good, IV bags, paper bags – things that wrinkle Inexact Science: When handling porous materials such as corrugated or heavy fabric, it may be hard to choose the exact generator required because the leakage rate is not normally known. It is best to run a trial to test the ability of the generator to overcome the leakage. For existing systems, consult Norgren for the equivalent generator size. System Speed: Cycle rate of the generator/cup system is determined by the evacuation speed of the venturi. See Vessel Evacuation. Increase safety, reliability and speed by using one generator and one cup at each location. Should one cup fail the others will maintain their grip. 4 07 For more information or for additional configurations, please contact us at NASInsideSales@imi-precision.com VACUUM GENERATOR SELECTION GUIDE