Abstract: A first fluid circuit is a fluid circuit of an air cylinder provided with an air cylinder with a first air chamber and a second air chamber that are defined by a piston; a switching valve that is switched between the drive step and return step of the piston; a first flow channel between the first air chamber and the switching valve; and a second flow channel between the second air chamber and the switching valve. Two speed control valves are provided in series in the second flow channel.

Abstract: A first fluid circuit is a fluid circuit of an air cylinder provided with an air cylinder with a first air chamber and a second air chamber that are defined by a piston; a switching valve that is switched between the drive step and return step of the piston; a first flow channel between the first air chamber and the switching valve; and a second flow channel between the second air chamber and the switching valve. Two speed control valves are provided in series in the second flow channel.

Abstract: An air cylinder fluid circuit is formed by connecting a switching valve, which switches the supply and discharge of compressed air, and cylinder port parts of an air cylinder by means of pipes, wherein the acoustic velocity conductance of the pipes is smaller than the acoustic velocity conductance of the switching valve and the cylinder port parts.

Abstract: A pneumatic device selection system includes a standard circuit selection processor for selecting a cylinder operating system based on input data, an independent characteristic calculation processor for calculating characteristics of the cylinder operating system based on entered usage conditions, a branching and joining circuit processor for selecting a branching and joining circuit based on input data and calculating characteristics of the selected branching and joining circuit, a manifold circuit processor for selecting a manifold circuit based on input data and calculating characteristics of the selected manifold circuit, and a shock absorber selection processor for selecting a shock absorber based on input data and/or a selection result from the standard circuit selection processor.

Abstract: The present system includes a standard circuit selection processing means for selecting a cylinder operating system based on input data, and independent characteristic calculation processing means for calculating characteristics of the cylinder operating system based on entered usage conditions, a branching and joining circuit processing means for selecting a branching and joining circuit based on input data and calculating characteristics of the selected branching and joining circuit, a manifold circuit processing means for selecting a manifold circuit based on input data and calculating characteristics of the selected manifold circuit, and a shock absorber selection processing means for selecting a shock absorber based on input data and/or a selection result from the standard circuit selection processing means.

Abstract: A pneumatic device selection system has a computer, first through sixth databases connected to the computer and storing data of at least pneumatic devices, a coordinate input unit and a keyboard connected to the computer, for entering input data based on an input action of an operator into the computer, and a display unit connected to the computer, for displaying information from the computer. The pneumatic device selection system functionally has a first selection processor for selecting a cylinder operating system based on input data from the coordinate input unit or the like, and a second selection processor for selecting a shock absorber based on input data from the coordinate input unit or the like and/or a selection result from the first selection processor.

Abstract: A stroke time of a piston from excitation of a solenoid valve for driving the piston of a pneumatic cylinder to arrival at an end position thereof and a velocity of the piston at the arrival of the piston at the end position are determined by a simulation calculating unit for several load rates of the pneumatic cylinder for a plurality of determined combinations of the solenoid valve, a speed controller, the pneumatic cylinder, and tubes for connecting therebetween. The stroke time and velocity of the piston determined by the simulation calculating unit for each of the load rates for each of the plurality of combinations are displayed in a superimposed manner on a display unit with a display control means based on a stroke of the pneumatic cylinder.

Abstract: A pneumatic device selection system has a computer, first through sixth databases connected to the computer and storing data of at least pneumatic devices, a coordinate input unit and a keyboard connected to the computer, for entering input data based on an input action of an operator into the computer, and a display unit connected to the computer, for displaying information from the computer. The pneumatic device selection system functionally has a first selection processor for selecting a cylinder operating system based on input data from the coordinate input unit or the like, and a second selection processor for selecting a shock absorber based on input data from the coordinate input unit or the like and/or a selection result from the first selection processor.

Abstract: A method of selecting devices for use in a fluid pipeline network, wherein items of data concerning devices are stored in a pipe database, a pipe joint database and a valve database, and calculating equations for use in computation are also stored. Devices are temporarily selected by using the stored device data, and then computation is performed by using the stored calculating equations, thereby allowing device selection to be made easily. In addition, a block diagram of the fluid pipeline network can be made easily.

Abstract: A stroke time of a piston from excitation of a solenoid valve for driving the piston of a pneumatic cylinder to arrival at an end position thereof and a velocity of the piston at the arrival of the piston at the end position are determined by a simulation calculating unit for several load rates of the pneumatic cylinder for a plurality of determined combinations of the solenoid valve, a speed controller, the pneumatic cylinder, and tubes for connecting therebetween. The stroke time and velocity of the piston determined by the simulation calculating unit for each of the load rates for each of the plurality of combinations are displayed in a superimposed manner on a display unit with a display control means based on a stroke of the pneumatic cylinder.

Abstract: Calculation for determining the optimal nozzle diameter and nozzle immediately upstream pressure for minimizing the compressed air consumption flow rate is facilitated. The nozzle diameter, work distance, and nozzle immediately upstream pressure or blow impact pressure in the present state are inputted as present state values. The compressed air consumption flow rate and the blow impact pressure or the nozzle immediately upstream pressure are computed from the present state values. An improvement value of the nozzle diameter or the nozzle immediately upstream pressure is inputted on the basis of a judgment on the computation results. The compressed air consumption flow rate and the nozzle immediately upstream pressure or the nozzle diameter are computed from the improvement value a necessary number of times. Thus, a nozzle diameter and a nozzle immediately upstream pressure that provide the lowest compressed air consumption flow rate are selected.

Abstract: A method of selecting pneumatic devices that satisfy specified load, speed and strength conditions to construct a pneumatic system. Data concerning pneumatic actuators, solenoid-controlled selector valves, drive controllers, pipes, pipe joints and exhaust treatment devices is stored in a pneumatic actuator database, a solenoid-controlled selector valve database, a drive controller database, a pipe database, a pipe joint database and an exhaust treatment device database, respectively, for each item number, and conditions required for pneumatic devices constituting a system are calculated. Then, pneumatic devices conforming to the calculated conditions are selected from the respective databases. At the first step, a pneumatic actuator satisfying a load condition, a strength condition and a speed condition is selected from the pneumatic actuator database on the basis of a calculation according to a basic equation.