Double piston rotary drive (en) Operating instructions 8068584 2017-05b [8068586]
Original instructions Symbols: Warning, Caution Fitting and commissioning to be carried out by qualified personnel only in accordance with the operating instructions. Please note Antipollution Accessories English... 3 2 Festo 2017-05b
Double piston rotary drive type DRQD-6-... to DRQD-12-... English Documentation on the product For all available product documentation www.festo.com/pk 1 Operating parts and connections 1 2 3 9 8 4 7 6 5 4 Fig. 1 Festo 2017-05b English 3
1 Air passage with dove-tail profile for fastening (with DRQD-...-SD...) 2 Drive shaft in the designs pivot shaft, flanged shaft and gripper mounting (with air passage module or adapter plates for grippers according to Accessories ) 3 Groove for proximity switch 4 Threaded bolts for fastening a gripper (with DRQD-...-AS..-...) or the work load (with DRQD-...-FW/-ZW-...) 5 Threaded through holes with centring for fastening the DRQD-... 6 Threaded bolts with locking nut and seal for adjusting the angle of rotation 7 Socket head screw for adjusting the angle of rotation 8 Compressed air connections 9 Compressed air connection for air passage module (with DRQD-...-SD...) 4 Festo 2017-05b English
2 Contents 1 Operating parts and connections... 25 2 Contents... 27 3 Product overview... 28 4 Function and application... 29 5 Conditions of use... 29 6 Fitting... 31 Mechanical... 31 Pneumatic... 38 Electrical... 39 7 Commissioning... 40 8 Operation... 43 9 Care and maintenance... 44 10 Dismantling and repairs... 44 11 Accessories... 45 12 Eliminating faults... 45 13 Technical specifications... 46 Festo 2017-05b English 5
3 Product overview AS2 DRQD-... A12 A08 AS1 ZW FW-SD32 FW J20 J60 180 90 B3 ZS SD.. B1 B2 HS Fig. 2 6 Festo 2017-05b English
4 Function and application The DRQD-... is a double-acting double piston rotary drive. When compressed air is applied alternately to one connection and then to the other, the two parallel pistons move backwards and forwards in opposite directions to each other. The linear movement is converted into a rotary movement of the drive output shaft by means of a pinion. The end position cushioning is carried out with elastic cushioning elements. Fig. 3 The DRQD-... rotary drive is intended for turning a work load which must perform a defined angular movement ( 180 ). 5 Conditions of use Please note Malfunctioning may occur as a result of incorrect handling. Observe the following instructions for the correct and safe use of the product. Compare the specified limit values with your actual application. The permitted limit values, e.g. for pressures, forces, torques, masses, speeds and temperatures must not be exceeded. Ensure that there is a supply of correctly prepared compressed air. Observe the prevailing ambient conditions. Fig. 4 Fig. 5 C % mbar LF-... LR-... Festo 2017-05b English 7
Comply with national and local safety laws and regulations. Remove all packaging. The individual materials can be disposed of in recycling containers (except oil-impregnated paper which cannot be used again). Once the energy medium has been selected, you should retain this for the entire service life of the product. Example: If non-lubricated compressed air is selected, then always use non-lubricated compressed air. Slowly pressurize your complete system. In this way you can avoid uncontrolled movements. Safety start-up valve type HEL-... should be used for slow pressurization when starting. Please observe the warnings and instructions on the product in these operating instructions. Use the product in its original form. Unauthorized modification is not permitted. Leave all screws and threaded pins in their original state if no immediate demand for modification is specified in these instructions. For safety reasons, the screws and pins are fixed with locking adhesive. Fig. 6 Fig. 7 Ó Ó Ó Ó Fig. 8 8 Festo 2017-05b English
6 Fitting Mechanical Treat the DRQD-... with care so that no damage can occur to the drive output shaft. This applies in particular when you carry out the following: 1. Place the DRQD-... so that the operating parts and connections are always accessible. Fig. 9 Fig. 10 2. Fasten the DRQD-... in one of the following ways: by means of two screws with centring sleeves in the through hole 5 (from the front) or threaded hole 5 (from the rear). by means of dove-tail fastening 1 (only with DRQD-...-SD..). Ó Ó Fig. 11 Ó Ó Ó Ó Ó Festo 2017-05b English 9
If you use a hollow flanged shaft: 3. Pull the cables required through the hollow shaft. The shaft must have the following minimum inner diameter in order that the cables can be passed through: Size DRQD- 6-... DRQD- 8-... DRQD- 12-... Longitudinal hole: Dimension x Dimension y No hollow flanged shaft 6.4 mm 3.2 mm 6.4 mm 3.2 mm Fig. 12 Fig. 13 A hollow bolt with an inner diameter of 1.3 mm can also be used. Application possibilities for the hollow flanged shaft Compressed air (already prepared on DRQD-...-SD..) Vacuum Electric cables Other cables Not used at present Fig. 14 Definition Moving load = work load (+ mass of any levers) Pre-fitting the tubing of the air passage module DRQD-8/12-...-SD32-...: Turn the drive output shaft in an anticlockwise direction into the end position. (A) Place the ends of the spiral tubing into the recess in the adapter plate (A) completely unstressed. Fig. 15 10 Festo 2017-05b English
Please note Excessive mechanical stress will damage the DRQD-...-.... When placing the moving load, make sure that the following specifications are observed: the load must not be fitted askew, the permitted lateral force Fy, the permitted longitudinal force Fx, the permitted mass moment of inertia. Fig. 16 The mass moment of inertia of the moving load should be calculated. Lever arms, swivel beams and masses should be taken into account in the calculation. The following maximum static and dynamic longitudinal forces Fx are permitted: Fx stat. = Static longitudinal force Fx dyn. = Dynamic longitudinal force V = Distance Fig. 17 Festo 2017-05b English 11
The maximum permitted lateral force Fy (static and dynamic) as a factor of distance Z is shown in Fig. 18. Fy stat. = Static lateral force Fy dyn. = Dynamic lateral force Z = Distance Fig. 18 If combined loads occur, make sure that the individual values fulfil the following inequation: F x F y 1 F x max F y max The maximum mass moment of inertia for the DRQD-... is shown in the following table. Size Maximum mass moment of inertia for DRQD-... *) DRQD-6-... 0.075 x 10-4 kgm 2 DRQD-8-... 0.25 x 10-4 kgm 2 DRQD-12-... 0.7 x 10-4 kgm 2 *) Unrestricted Fig. 19 12 Festo 2017-05b English
4. Fasten the moving load onto the drive output shaft (tightening torque see Fig. 21 and Fig. 22). DRQD-... 6 8 12 Nm 0.7 1.2 Fig. 21 Make sure that the following points are observed: Fig. 20 ÎÎ ÎÎ DRQD-... with Feather key The moving mass cannot slide down from the drive output shaft (use thread at front) DRQD-... with Flanged shaft The moving mass is fastened with at least 2 screws (fitting 4 provided) 4 Ó Ó Ó Fig. 23 Fig. 22 1,2 Nm Warning Ejected bolts can cause injury. Make sure that the threaded sleeve 6 is never unscrewed completely (max. unscrewing length see Fig. 25). DRQD-... 6 8 12 6 L max (mm) at DRQD-...-J20 L max (mm) at DRQD-...-J60 8 9 10 12 13 14 S S min Fig. 25 Flush Fig. 24 Festo 2017-05b English 13
Please note If the threaded sleeves are screwed in too far, the DRQD-... will be damaged. Make sure that the maximum screw depth is observed (flush with locking nut). Adjusting the end positions: 1. Unscrew the locking nuts 6 of the threaded bolt to be adjusted. 2. Screw the moving load by hand into an end position. 3. Use a hexagon socket wrench to screw in the threaded bolt, until the desired end position is reached. The following settings are possible: Fig. 26 Activity Reaction Setting range in relation to basic factory setting DRQD-...-J20 DRQD-...-J60 Turn in clockwise direction Angle of rotation is reduced - 20-60 Fig. 27 Turn in anti-clockwise direction Angle of rotation is increased + 6 + 6 Fig. 29 Fig. 28 14 Festo 2017-05b English
One turn corresponds approx. to the following modifications to the angle of rotation: Diameter DRQD-6 DRQD-8 DRQD-12 Modification to angle per turn 6 5.1 7.7 Fig. 30 4. Repeat the procedure for setting the second end position. 5. Screw in the locking nuts with the following tightening torques: DRQD-... 6 8 12 Nm 3 5 12 Fig. 32 Check whether additional shock absorbers are necessary. Additional shock absorbers are required in the following cases: with moving loads with a calculated mass moment of inertia higher than the permitted mass moment of inertia when the DRQD-... is operated without an air cushion on the exhaust side (e.g. after long intervals between the individual rotary movements). Fig. 31 Fig. 33 Festo 2017-05b English 15
Pneumatic For setting the rotational speed: Use one-way flow control valves of type GRLA-.../GRLZ-.... These should be screwed directly into the compressed air ports. In the case of eccentric masses: Check whether open-loop controlled nonreturn valves of type HGL-... or a compressed air compensation reservoir of type VZS-... are necessary. In this way you can prevent the moving load from sliding down if there is a sudden drop in pressure. Using the air passage module DRQD-...-SD..-... Connect the tubing to ports (X) and (Y) according to Fig. 36. The necessary dimensions for the tubing are shown in the following table: Fig. 34 (X) (Y) Tubing connection Plug connector (X) Spiral tubing (Y) Tubing diameter 3 mm 3 mm Fig. 36 Fig. 35 The assignment of the tubing colours to the plug connectors at the point where the tubing emerges is marked by an adhesive sign on the dove-tail profile. 16 Festo 2017-05b English
Electrical Interrogating the end positions: Place the proximity switches of type SME-10-.../SMT-10-... in the grooves 3. 3 Fig. 37 Festo 2017-05b English 17
7 Commissioning When setting the DRQD-...: Warning Make sure that... nobody can place his/her hand in the area of rotation of the DRQD-... no objects are placed in its path (e.g. by fitting a protective grill). m Fig. 38 Please note Make sure that the following points are observed: the threaded bolts are secured with locking nuts (tightening torques see Fitting, mechanical ) the operating conditions are within the permitted limits the DRQD-... must not be operated until protective screens have been installed. Fig. 39 When setting the rotational speed: 1. Close both upstream one-way flow control valves (A) at first completely then open them approximately one turn. (A) Fig. 40 18 Festo 2017-05b English
2. Pressurize the drive according to one of the following methods: slow pressurization of one side, simultaneous pressurization of both sides with subsequent exhausting of one side. For slow pressurization during the starting phase use the safety start-up valve type HEL-.... Fig. 41 3. Start a test run. 4. During the test run check whether the settings on the DRQD-... need to be modified. These could be: rotation range of the moving mass rotation speed of the moving mass. 5. Slowly unscrew the one-way flow control valves until the desired rotation speed is reached. The piston should reach the end position but not strike hard against it. If the piston knocks too hard against the end posiition, it may bounce back out of the end position. If the piston makes a hard knocking sound: 6. Interrupt the test run. The cause of the hard knocking could be: Fig. 42 the mass moment of inertia of the moving mass is too high the rotation speed of the moving mass is too high there is no compressed air cushion on the exhaust side. 7. Make sure that the causes of the knocking are remedied. 8. Repeat the test run. When all necessary modifications have been made: 9. Conclude the test run. Festo 2017-05b English 19
Dynamic accurate adjustment of the end positions: Warning The bolt can be ejected. Make sure that the unscrewing length is not exceeded (see chapter Fitting, mechanical ). You should proceed as follows with the compressed air applied. Leakage will occur when the locking nuts are loosened. When all the stops have been adjusted: make sure that all the adjusting parts are secured with locking nuts (torque see chapter Fitting, mechanical ). Repeat the test run. When all the settings have been completed: You should make final adjustments to the proximity switches. Fig. 43 Fig. 44 S 20 Festo 2017-05b English
8 Operation Please note Make sure that: nobody can place his/her hand in the rotation range of the moving load no objects are in the path of the moving load the piston of the rotary drive does not move against an unpressurized chamber. Fig. 45 m When several rotation cycles have been made without interruption: Please note Make sure that the maximum rotational speeds, as shown in the following table, are not exceeded. Diameter DRQD-6 DRQD-8 DRQD-12 Max. permitted rotational speed [Hz] with: 90 swivel angle 180 swivel angle 5 3.5 4 2.5 3 2 Fig. 46 Otherwise reliable functioning will be impeded. Festo 2017-05b English 21
9 Care and maintenance If the DRQD-... is dirty: Clean it with a soft cloth. Permitted cleaning agents are: warm soap suds up to + 60 C petroleum ether all non-abrasive cleaning agents. 10 Dismantling and repairs Dismantling: Please note Make sure that the rotary drive is exhausted. In the case of eccentric loads on the lever arm: Please note Make sure that the load reaches a stable position (e.g. the lowest point) before exhausting takes place. Otherwise the load will slide down if there is a sudden drop in pressure. Fig. 47 m m 22 Festo 2017-05b English
11 Accessories Designation Safety start-up valve Adapter plates Flow control valve for exhaust air restriction Screw connector (only for DRQD-...-HS) Compressed air compensation reservoir Open-loop controlled non-return valve Proximity switch Centring sleeve Type HEL-... HAPG-.../HAPS-... GRLA-.../GRLZ-... QSR-M5-4/QSRL-M5-4 VZS-... HGL-... SME-10/SMT-10 ZBH-... Fig. 48 12 Eliminating faults Fault Possible cause Remedy Irregular movements of the moving load Hard knocking in the end position Drive shaft does not remain in the end position (it bounces back) Fig. 49 Restrictors inserted incorrectly Asymmetrical angle setting DRQD-... defective Residual energy too great Rotary drive moves against an unpressurized chamber Check the restriction function (supply or exhaust restriction) Setting should preferably be symmetrical Return to Festo Select lower rotational speed Use external shock absorbers Move only against the residual air cushion on the exhaust side Select smaller load Pressurize rotary drive on both sides Festo 2017-05b English 23
13 Technical specifications Type DRQD-6-... DRQD-8-... DRQD-12-... Design Medium Operating pressure range Permitted pressure range for spiral tubing (DRQD-...-SD...) Fitting position Rotation angle (ex works) Rotary angle setting per end position Temperature range Rotary drive with double-acting double piston and adjustable rotating angle Filtered (5 m) compressed air, lubricated or non-lubricated Min. 1... max. 8 bar Min. 1.5... max. 8 bar (with DRQD-8-...-SD32-...) 0...10 bar (with T = - 10 C... + 30 C) 0...9 bar (with T = - 10 C... + 40 C) 0...7 bar (with T = - 10 C... + 60 C) As desired 90 (with DRQD-...-90-...); 180 (with DRQD-...-180-...) Infinitely variable between - 20... + 6 (with DRQD-...-J20) - 60... + 6 (with DRQD-...-J60) - 10... + 60 C Tightening torque at 6 bar (theor.) 0.16 Nm 0.33 Nm 0.76 Nm Max. permitted forces and torques End position cushioning End position adjustment See chapter Fitting, mechanical Elastic cushioning By screwing in the threaded bolts Max. permitted unscrewing length of threaded pins for setting DRQD-...-J20 the rotational angle DRQD-...-J60 8 mm 12 mm 9 mm 13 mm 10 mm 14 mm Materials: Housing, driving shaft: Al, elox Pinion, screws: St Spiral tubing (DRQD-...-SD...): PU Seals: Polyurethane, NBR Buffer: Buna N Weight (app.)centre part - 90-180 67 g 83 g 92 g 113 g 148 g 180 g Pivot shaft (flanged shaft) 2 g (4 g) 4 g (7 g) 4 g (7 g) Air passage - SD.. --- 81 g Fig. 50 24 Festo 2017-05b English
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