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Rotary TableAir ConsumptionAir consumption is the volume of air which is expended by the rotary table's reciprocal operation inside the actuator and in thepiping between the actuator and the switching valve, etc. This is necessary for selection of a compressor and for calculation of itsrunning cost.∗The air consumption (QCR) required for one reciprocation of the rotary table alone is shown in the table below, and can be usedto simplify the calculation.FormulaeQCRQCPVPlaQCP+0.1QCR = 2V x x 10 30.1PQCP = 2 x a x l x x 10 60.1QC = QCR + QCP=======Air consumption of rotary tableAir consumption of tubing or pipingInternal volume of rotary tableOperating pressureLength of pipingInternal cross section of pipingAir consumption required for onereciprocation of rotary tableAir Consumption[l (ANR)][l (ANR)][cm 3 ][MPa][mm][mm 2 ][l (ANR)]When selecting a compressor, it is necessary to choose one whichhas sufficient reserve for the total air consumption of all pneumaticactuators downstream. This is affected by factors such as leakage inpipping, consumption by drain valves and pilot valves, etc., andreduction of air volume due to drops in temperature.FormulaQc2 = Qc x n x Number of actuators x Reserve factorQc2 = Compressor discharge flow rate[l /min(ANR)]n = Actuator reciprocations per minuteInternal cross section of tubing and steel pipingNominal sizeT 0425T 0604TU 0805T 08061/8BT 1075TU 1208T 12091/4BTS 16123/8BT 16131/2B3/4B1BO. D.(mm)46881012121616I. D.(mm)2.54566.57.5899.21212.71316.121.627.6Internal cross sectiona (mm 2 )4.912.619.628.333.244.250.363.666.5113127133204366598Size12371020305070100200RotationangleInternalvolume (cm 3 )0.661.32.24.26.6190 13.520.134.150.074.7145.90.10.00260.00520.00870.0170.0260.0540.0800.1360.2000.2990.5840.20.00390.00770.0130.0250.0400.0810.1210.2050.3000.4480.8750.30.00520.0100.0170.0330.0530.1080.1610.2730.4000.5981.1670.40.00650.0130.0220.0420.0660.1350.2010.3410.5000.7471.459Operating pressure (MPa)0.5 0.60.0078 0.00910.015 0.0180.026 0.0300.050 0.0580.079 0.0920.162 0.1890.241 0.2810.409 0.4770.600 0.7000.896 1.0461.751 2.043Air consumption of rotary table: QCR l (ANR)0.70.0100.0210.0350.0660.1060.2160.3220.5460.8001.1952.3340.80.1190.2430.3620.6140.9001.3452.6260.90.1320.2700.4020.6821.0001.4942.9181.00.1450.2970.4420.7501.1001.6433.2106
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