Air Cylinder Model Selection Procedures

Transcription

1 Air Cylinder Model Selection Procedures Step Obtain the bore of the cylinder tube. Refer to Graphs and. qdetermine the load factor in accordance with the purpose. Purpose of operation Load factor η Series CS Static operation (clamping, low speed vise crimping, etc.) or less (70% or less) Series MB Series CA Series CG Series CM Series CQ Series CJ Dynamic operation Horizontal movement of load on guide Vertical and horizontal movement of the load or less (% or less) or less (% or less) () Note ) If it is particularly necessary to operate at high speeds, the load rate must be reduced further. (In the graph, it is possible to select a load rate of 0.,, 0., or less.) wdetermine the operating pressure. Generally, set the regulator to 8% of the source air pressure. (In the graph, a selection between 0.MPa and 0.8MPa is possible.) edetermine the direction in which the cylinder force will be used. Extending side Refer to Graph. Retracting side Refer to Graph. Note: If the same load is applied both for pushing and pulling in a horizontal operation, set the direction to the pulling side. Step Take the impact at the stroke end into consideration. qhen an external stopper (shock absorber, etc.) is provided to absorb the impact, select a stopper with sufficient absorption capacity. wstopping the piston with the cylinder without a stopper: Verify in Graphs to 7 the absorption capacity of the cushion that is enclosed in the cylinder. ) Rubber bumper: Urethane rubber is used for preventing metal-to-metal contact between the piston and the cover. ) Air cushion: The air in the exhaust side is compressed slightly before the stroke end, and its reaction force absorbs the kinetic energy of the load, Step thus enabling the piston to stop quietly. The aspects indicated below may need to be taken into consideration, depending on how the cylinder is operated. qif a lateral load is applied to the piston rod: Verify in Graphs 8 to whether the lateral load is within an allowable range. Technical data for air cylinders For detailed technical data other than the air cylinder model selection procedure, refer to p..6- to.6-8. Data : Tube Bore Selection (p..6- to.6-) Data : Air consumption and Required Air volume (p..6-6) Data : Theoretical Force Table (p..6-7 and.6-8) when using a cylinder with a relatively long stroke, if a buckling force acts on the piston rod or the cylinder tube, verify in the table whether the stroke or the operating pressure is within a safe range. Step Obtain the cylinder's air consumption and required air volume. Obtain the air consumption (Graphs, ) that is necessary for selecting a compressor and for calculating the running cost and the required air volume (Graph ) that is necessary for selecting equipment such as an air filter or a regulator, or the size of the piping upstream. 0-8

2 Air Cylinder Model Selection Procedures Step Obtain the bore of the cylinder tube. Refer to Graphs and. <Graph > Extending side cylinder force (Double acting cylinder) <Graph > Retracting side cylinder force (Double acting cylinder) Cylinder force F (N) Bore size (mm) Cylinder force F (N) Bore size (mm) Load weight m (kg) Load weight m (kg) Operating pressure (MPa) Operating pressure (MPa) Load factor (η) Load factor (η) Example: P=MPa Example: P=0.MPa kg P=MPa Fig. Example : If a minimum force of 0N is necessary to keep the workpiece pressed as shown in Fig., because this is the extending side, use Graph to determine the load factor of and the operating pressure of MPa. Then, seek the point at which the cylinder force of 0N intersects, and this will result in a bore size of 6mm. Conversion to gravitational units MPa.kgf/cm N 0.kgf kgf/cm 0.098MPa kgf 9.8N Fig. kg Fig. Example : To move a load with a kg weight horizontally on a guide as shown in Fig., because the load is the same for both the pushing and retracting sides, use Graph, which is the retracting side with a smaller force. Determine the load factor of, and the operating pressure of 0.MPa. Then, seek the point at which it intersects with the load weight of kg, and this will result in a bore size of mm. Example : To pull a load with a kg weight vertically upward as shown in Fig., use Graph to determine the load factor of and the operating pressure of MPa. Then, seek the point at which it intersects with the load weight of kg, and this will result in a bore size of mm. 0-9

3 Air Cylinder Model Selection Procedures Step Take the impact at the stroke end into consideration. How to view the Graphs Example : According to Graph, to move a load weight of kg using CM-A, it is necessary to set the maximum speed at mm/s or less, considering the capacity of the air cushion. Cylinder with an air cushion CJ CA CG CM CS <Graph> Series CJ/CM Load (kg) 0 CM- CM- CM- CM- CJ-6 CJ- <Graph> Series CG 0 CG- CG- 0 CG-6 CG- 0 CG- CG- CG- Load (kg) CG- <Graph> Series CA/CS 00 CS- CS- 00 CS-0 0 CS- CS CS- CS- 0 CA- Load (kg) CA- 0 CA-6 0 CA- CA

4 Air Cylinder Model Selection Procedures How to view the Graphs Example : According to Graph 7, to move a load weight of kg at a maximum speed of 0mm/s, in the CG series, a bore size of can be selected. Cylinder with a rubber bumper CJ CG MB CM <Graph6> Series CJ/CM 0 CM- CM- CM- CM- CJ-6 <Graph7> Series CG 0 CG- CG- 0 CG-6 CG- 0 CG- CG- <Graph8> Series MB 0 MB MB 0 MB 6 MB 0 MB CG- MB Load (kg) CJ- Load (kg) CG- Load (kg) CJ

5 Air Cylinder Model Selection Procedures Step The aspects indicated below may need to be taken into consideration, depending on how the cylinder is operated. qthe maximum stroke at which the cylinder can be operated under a lateral load. The region that does not exceed the bold solid line represents the allowable lateral load in relation to the cylinder of a given stroke length. In the graph, the range of the broken line shows that the long stroke limit has been exceeded. In this region, as a rule, operate the cylinder by providing a guide along the direction of movement. fr Bushing (Bearing) <Graph8> Series CM/, ø, ø, Lateral load applied to the rod end (fr)(n) CM CM CM CM Cylinder stroke (mm) <Graph9> Series CG/, ø, ø,, ø,,, ø Lateral load applied to the rod end (fr)(n) Cylinder stroke (mm) CG CG CG 6 CG CG CG CG CG <Graph> Series MB/ø,, ø,,, ø Series CA/, ø,,, ø Lateral load applied to the rod end (fr)(n) 0 MB CA MB CA MB 6 A 6 MB CA MB CA MB <Graph> Series CS/ø, ø, ø60,, 0, ø, ø Lateral load applied to the rod end (fr)(n) CS CS CS CS 60 CS CS Cylinder stroke (mm) Cylinder stroke (mm) 0-

6 Air Cylinder Model Selection Procedures wthe relationship between the cylinder size and the maximum stroke depending on the mounting style Assuming that the force that is generated by the cylinder itself acts as a buckling force on the piston rod or on the piston rod and the cylinder tube, the table below indicates in centimeters the maximum stroke that can be used, which was obtained through calculation. Therefore, it is possible to find the maximum stroke that can be used with each cylinder size according to the relationship between the level of the operating pressure and the type of cylinder mounting, regardless of the load factor. Reference: Even under a light load, if the piston rod has been stopped by an external stopper at the extending side of the cylinder, the maximum force generated by the cylinder will act upon the cylinder itself. P Mounting style Mounting bracket diagram Foot: L Front flange: F Rear flange: G Symbol Operating pressure MPa ø ø ø ø ø ø ø ø ø ø ø ø60 0 ø ø 9 L 9 F Maximum stroke that can be used according to buckling strength CM CG MB MB/CA CS (cm) G Clevis: C, D Front trunnion: U C D Rear trunnion: U Center trunnion: U CA/CS only U T Foot: L Front Rear flange: F flange: G L F G Foot: L Front Rear flange: F flange: G L F G

7 Air Cylinder Model Selection Procedures Step Obtain the cylinder's air consumption and its required air volume. Cylinder's air consumption and its required air volume In equipment that uses a cylinder, air consumption is the volume of air that is consumed in the cylinder, or in the piping between the cylinder and the switching, every time the switching operates. This is necessary for selecting a compressor and for calculating the running cost. The required air volume is the volume of air that is necessary for operating a specified load at a specified speed, and it is necessary for selecting the F.R.L. equipment or the size of the upstream piping. How to obtain the air consumption/how to view Graphs, Step Using Graph, obtain the air consumption of the air cylinder. qseek the point at which the operating pressure (diagonal line) intersects with the cylinder stroke, and from that point, perpendicularly extend a vertical line upward. wfrom the point at which it intersects with the bore size (diagonal line) of the cylinder to be used, look sideways (either to the right or left) to obtain the air consumption that is required by one cycle of the air cylinder. Step Using Graph, obtain the air consumption of the tube or steel pipe in the same way as in step. Step Obtain the total air consumption per minute as described below. (air consumption of air cylinder + air consumption of tube or steel pipe) X number of cycles per minute X number of cylinders being used = total air consumption [unit: L/min (ANR)] Note:In selecting a compressor, the temperature drop, leakage, and consumption by the intermediary equipment must be taken into consideration. Thus, select one with a generous capacity, with a discharge that exceeds the total air consumption indicated above. (Reference: At a minimum, select one with. times the volume; select one with a higher volume as needed.) Example: hen air cylinders with a mm bore size and a 600mm stroke are used at a pressure of MPa, what is the air consumption of their cycles per minute? (A m tube with a 6mm bore is used for piping between the cylinders and the switching.). Operating pressure MPa cylinder stroke 600mm bore size mm air consumption volume l (ANR). Operating pressure MPa piping length m bore 6mm air consumption 6 l (ANR). Total air consumption = ( + 6) X X = 678 l/min (ANR) How to obtain the required air volume/how to view Graph Step Using Graph, obtain the air cylinder's required air volume. qseek the point at which the operating pressure (diagonal line) intersects with the maximum piston speed, and from that point, perpendicularly extend a vertical line upward. wfrom the point at which it intersects with the bore size (diagonal line) of the cylinder to be used, look sideways (either to the right or left) to obtain the required air consumption. Example: hat is the required air volume for operating a cylinder with a bore size of mm, at a pressure of MPa, and at a speed of 0mm/s? How to: Operating pressure MPa maximum piston speed view 0mm/s bore size mm then, a required air volume l/min (ANR) can be obtained. <Graph > Cylinder's air consumption (For one cycle) Air consumption (l (ANR)) Cylinder stroke (mm) Operating pressure (MPa) Bore size (mm) Air consumption (l (ANR))

8 Air Cylinder Model Selection Procedures <Graph > Air consumption of tube or steel pipe (For one cycle) <Graph > Required air volume of cylinder and piping Bore size (mm) Bore size (mm) Air consumption (l (ANR)) Piping length (m) " /" /" Operating pressure (MPa) /8 /" Air consumption (l (ANR)) Air consumption (l/min (ANR)) Max. piston speed mm/s Operating pressure (MPa) Air consumption (l/min (ANR)) The piping length is the length of the steel pipe or tube that connects the cylinder with the switching (solenoid, etc.). Refer to p..6-6 for the dimensions (bore size and O.D.) of the steel tubing. 0-

9 Optimized Air Cylinder Drive System Maximum Operating Characteristics How to View Graph This graph shows the maximum speed when a cylinder drive system is composed of ideal equipment. Divided according to the series of the cylinder (CM, CG, CA, CS), it indicates the maximum speed for every bore size, with a load factor of 0% to %, as shown in the example diagram below. Conditions Pressure Piping length Cylinder stroke Cylinder orientation Load factor MPa m mm Vertically upward 0% to % Example: If the load factor is %, divide the portion between 0% to % into parts, and find the speed at the point that corresponds to %. Load factor % Load factor 0% Bore size Stroke (mm) 0 Time (sec) Max. speed 0-6

10 0 0 Air Cylinder Series CM Optimized Air Cylinder Drive System: Max. Operating :, ø, ø, Rubber Seal Valve SYJ-0 VZ Max. speed (mm/sec) % ø ø Load factor 0% 0 AN -0 AN -M Applicable to VF-0 ( ) T06 VZ-0 SYJ7-0 VF-0 VFR ø ø VK-0 VF ø ø AN0-0 T7 SYJ7-0 VZ ø ø AN -0 AN0-0 Applicable to VF- ( ) T06 T7 VF-0 VFR-0 VF ø ø Metal Seal Valve VZS Max. speed (mm/sec) % ø 0 ø Load fator 0% 0 AN -0 T06 VZS-0 VFS-0 VFS-0 VS-0 VS ø ø AN0-0 VFS ø ø T

11 Air Cylinder Optimized Air Cylinder Drive System: Max. Operating Series CG :, ø, ø,, ø,,, ø Rubber Seal Valve AN -0 AN -M Applicable to VF-0 ( ) AN -0 AN -M Applicable to VF-0 ( ) AN -0 AN0-0 AN0-06 T06 T7 T9 T06 T7 T9 SYJ-0 VZ-0 VZ-0 SYJ7-0 VF-0 VFR-0 VK-0 VF-0 SYJ7-0 VZ-0 VF-0 VFR-0 VF-0 VP7-8-FG-S-0 VP-0 VP7-8-FG-S-0 VFR-0 VP-0 VP ASF -0- ASF ASF -0- ASF -0- ASF -0- ASF -0- ASF -0- ø ø ø ø ø ø ø ø ø Load factor % ø ø Max. speed (mm/sec) % ø ø ø ø ø ø ø ø AN -0 T6 SGP /8 VP7-8-FG-S-0 VP-0 AS-0 AN0-0 T6 SGP / VP7-8-FG-S-0 VFR-0 VS-0 AS-0 ø ø 0-8

12 Air Cylinder Optimized Air Cylinder Drive System: Max. Operating Series CG :, ø, ø,, ø,,, ø Metal Seal Valve VZS Max. speed (mm/sec) Load factor % 0% ø ø AN -0 T06 VZS-0 VFS-0 VFS-0 VS-0 VS ø ø ø ø T ø ø AN0-0 T7 VFS-0-0- ø ASF -0- T9 ASF -0- ø AN -0 T6 SGP /8 VS-7-8-FG-S-0 VFS-0 VFS-0 AS-0 AN0-0 T6 SGP / VS-7-8-FG-S-0 VFS-0 VS-0 AS-0 ø ø 0-9

13 Air Cylinder Optimized Air Cylinder Drive System: Max. Operating Series CA :, ø,,, ø Rubber Seal Valve T Load factor % 0% T9 SYJ7-0 VZ-0 ASF -0- ASF -0- ø ø T7-0- AN0-0 Applicable to VF-0 ( ) T9 VF-0 ASF -0- ASF -0- ø ø T7-0- T9 VFR-0 ASF -0- ASF -0- ø ø T7-0- AN -0 T9 T7 T9 VF-0 VFR-0 VP-0 VP-7-8-FG-S-0 VF-0 VP7-6-FG-S-0 ASF -0- ASF ASF -0- ASF -0- ø ø ø ø AN0-0 AN -0 T6 SGP /8 VFR-0 VP-0 VF-0 ASF -0- AS-0 ø ø ø AN0-0 T6 SGP / VFR-0 VP-0 AS-0 ø ø 0-

14 Air Cylinder Optimized Air Cylinder Drive System: Max. Operating Series CA :, ø,,, ø Metal Seal Valve VZS ASF Load factor % ø 0% AN -0 T06 VZS ASF ø VS-0 ASF ø AN0-0 AN -0 Applicable ( to VS7-6 ) T7 T9 VFS-0 VS-0 VS7-6-FG-S-0-0- ASF -0- ASF -0- ø ø T7-0- T9 VFS-0 VFS-0 ASF -0- ASF -0- ø ø AN -0 T7 T9 VS-0-0- ASF -0- ASF -0- ø ø T6 SGP / 8 VS7-6-FG-S-0 VS-0 V-0 AS-0 ø ø 0-

15 0 0 Air Cylinder Series CS Optimized Air Cylinder Drive System: Max. Operating : ø, ø, ø60,, 0 Rubber Seal Valve AN0-0 AN0-06 SGP / SGP / VFR-0 VF-0 VP7-8-FG-S-0 VP-0 VP-06 VP- VP- AS-0 AS % 0 ø ø 600 Load factor 0% ø ø ø ø ø ø ø60 0 ø ø 0 Metal Seal Valve VS % 600 Load factor 0% ø ø 0 AN0-0 SGP / VS7-8-FG-S-0 VS-0 AS-0 ø ø ø ø VFS-0 ø ø AN0-06 SGP / VS-06 VFS-06 AS0-06 ø60 0 ø

16 Optimized Air Cylinder Drive System: Short Stroke (mm) Extending Time Characteristics How to View Graph This graph shows the approach time when the drive system of a small stroke cylinder is composed of ideal equipment. Divided according to the series of the cylinder (CJ, CQ, CG, CM), it indicates the approach time for every bore size, with a load factor of 0% to %, as shown in the example diagram below. Conditions Pressure Piping length Cylinder stroke Cylinder orientation Load factor MPa m mm Vertically upward 0% to % Example: If the load factor is %, divide the portion between 0% to % into parts, and find the speed at the point that corresponds to %. Load factor % Load factor 0% Bore size Stroke (mm) 0 Time (sec) 0-

17 Air Cylinder Series CJ Short Stroke (mm) Optimized Air Cylinder Drive System: Extending Time : ø6, ø, ø6 Rubber Seal Valve Extending time (sec) % Load factor % ASF TIA0 ø6 -M- SYJ-M ø T0 ASF -M-0 ø6 AN -M TIA0 T0 TIA0 T0 SYJ-M VK-M ASF -M- ASF -M-0 ASF -M- ASF -M-0 ø6 ø ø6 ø ø6 ø6 VZ-M ø6 ø ø6 TIA0 VF-M ASF -M- ø6 ø ø6 AN -0 T0 TIA0 T0 VF-0 VF-0 ASF -M-0 ASF -M- ASF -M-0 ø6 ø ø6 ø ø6 ø6 Metal Seal Valve Extending time (sec) AN -0 TIA0 VZS-0 VFS-0 VFS-0 ASF -M- Load factor % 0% ø6ø T0 -M-0 ø6 0-

18 Air Cylinder Series CQ Short Stroke (mm) Optimized Air Cylinder Drive System: Extending Time : ø, ø6, Rubber Seal Valve AN -M AN -0 TIA0 SYJ-M VF-M SYJ-M VK-M VZ-M VF-0 VF-0 ASF -M Extending time (sec) Load factor 0% % ø ø6 ø ø6 ø ø6 ø ø6 ø ø6 ø ø6 Metal Seal Valve Extending time (sec) AN -0 TIA0 VZS-0 VFS-0 VFS-0 ASF -M- Load factor % 0% ø ø6 0-

19 Air Cylinder Series CM Short Stroke (mm) Optimized Air Cylinder Drive System: Extending Time : Rubber Seal Valve AN -M T0 SYJ-M VF-M SYJ-M VK-M VZ-M Extending time (sec) 0% % AN -0 TIA0 VF-0 VF-0 Metal Seal Valve Extending time (sec) AN -0 T0 VZS-0 VFS-0 VFS Load factor 0% % Air Cylinder Series CG Short Stroke (mm) Optimized Air Cylinder Drive System: Extending Time : Rubber Seal Valve AN -M AN -0 T0 TIA0 T0 T060 SYJ-M VF-M VJ-M VK-M VZ-M VF-0 VF Extending time (sec) % % Metal Seal Valve Extending time (sec) AN -0 T0 VZS-0 VFS-0 VFS Load factor 0% % 0-6