Mechanically Jointed Hy-rodless Cylinder with Brake

Transcription

1 Mechanically Jointed y-rodless Cylinder with Brake Series ø, ø, ø Brake mechanism has been compactly integrated into the slide table which enables intermediate stops of the rodless cylinder. Large holding brake force Force from 4 brake springs hold slide tightly. olding force ø 0 N ø 00 N ø 00 N Brake construction is designed not to allow loads on guide. Spring force works directly on the brake-shoe and the brake plate is caught between brake shoes from top and bottom so that the slide table can stop without compromising guide performance. The brake shoe yields long service life due to special friction resistant material. Brake spring Brake shoe 1 Brake plate Diaphragm Brake shoe 2 Stroke adjustment unit combines a shock absorber and stopper bolt. Stop is possible at the arbitrary position. Locking in both directions is possible. Locking in either side of cylinder stroke is possible, too. CN2 External air piping for brake release not required. Brake releasing air flows from head cover to slide table through air tube in cylinder body. There is no restriction on piping requirements because piping to the outside of the slide table is not necessary. Cam follower guide type Cam follower is adopted for the guide section. Trafficability is excellent in moment resistance.

2 Prior to Use Maximum llowable Moment /Maximum Load Mass llowable moment (N m) Maximum load mass (kg) Model M M M W W W3 3 W4 1 Maximum llowable Moment Select the moment within the limits shown in the graphs below. Note that the maximum payload value in some cases may exceed maximum allowable payload despite being within the limit shown in the graph; therefore, payload on the operating conditions should be checked. Caution on Design llowable moment and Load Mass Maximum llowable moment and Maximum load mass varies depending on mounting orientation, piston speed, etc. Therefore use the cylinder within the range shown in the graph corresponding to operating conditions. Moment (N m) M1 = F1 x L1 Load mass (kg) /M1 Moment (N m) /M2, M3 M2 = F2 x L2 Moment (N m) M3 = F3 x L3 (ow to calculate the load ratio). Consider (1) max. load mass, (2) static moment, (3) dynamic moment (when stopper collides) when calculating the max. allowable moment and load mass. Evaluate (1) and (2) as υa (average speed), and (3) as υ (collision speed υ = 1.4 υa). Calculate (1) (Wmax) from the graph of max. payload (W1, W2, W3) and calculate (2) and (3) (Mmax) from the maximum allowable moment graph (M1, M2, M3). Sum of Load mass [m] Maximum load mass [m max] Note 1) Static moment [M] Static allowable moment [Mmax] Dynamic moment [ME] Note 2) Dynamic allowable moment [MEmax] the load factors = Note 1) Moment generated by load, etc. when the cylinder stops. Note 2) Moment generated by load equivalent to impact at stroke end (when stopper collides). Note 3) Depending on the shape of the workpiece, multiple moments may occur. When this happens, the sum of the load factors ( α) is the total of all such moments. B. Reference formula [Dynamic moment at impact] Refer to following calculation for dynamic moment considering the impact when stopper collides. W : Mass (kg) F : Load (N) FE : Load equivalent to impact (when stopper collides) (N) υa : verage speed (mm/s) M : Static moment (N m) 1.4 υ = 1.4 υa (mm/s) FE = υa g W 0 Note 4) 1 ME = FE L1 = 0.0 υagwl1 (N m) 3 2 υ : Collision speed (mm/s) L1 : Distance to the center of load gravity (m) ME : Dynamic moment (N m) g : Gravitational acceleration (9. m/s 2 ) Note 4) verage load coefficient (This coefficient is meant to average the maximum load moment at the time of impact with stopper in the light of calculating the service life.) t impact: υ = 1.4 υa

3 Prior to Use Series Maximum Load Mass Select the maximum load mass to be applied within the limits shown in the graph. Note that the maximum allowable moment may in some cases exceed Maximum allowable moment despite being within the limit shown in the graph: therefore, allowable moment on operating conditions should be checked. /W1 Load mass (kg) Caution on Pneumatic Circuit Design Operating pneumatic circuit orizontal, Lateral mounting SOL3 W SOL2 SOL1 Vertical mounting SOL3 /W2 w SOL1 CN2 Load mass (kg) /W3 Load mass (kg) /W4 Load mass (kg) Be sure to use the circuit above. Please consult with SMC in case of using other circuits. SOL2 SOL.1 OFF ON OFF SOL.2 OFF OFF ON Solenoid Valve for Driving and Braking ir Balance SOL.3 OFF ON ON ctuation Stop To left To right <Solenoid valve for driving> Use pressure center style valve. Control the operation with a meter-out system. <Solenoid valve for braking> Use the solenoid valve for braking which has the effective area equivalent to the one of solenoid valve for driving. If the effective area is smaller, it may encounter an unexpected sudden slide table movement. Install a solenoid valve for braking as close to the cylinder as possible. If there is a long distance between the cylinder and valve, it may cause fluctuations in the stop accuracy or unexpected sudden slide table movements. <Recommended solenoid valve example> orizontal, lateral mounting Vertical Solenoid valve for driving VFS00 Solenoid valve for braking VP0 or VFS20 Determine the size of the solenoid valve according to the operating cylinder speed. On both above mentioned circuit, the air balance is made by pressurizing to both sides of cylinder on the condition of the intermediate stop. In the case of the vertical orientation, reduce the pressure of the upside by regulator (check valve) () to keep the balance is not made, it may cause unexpected sudden slide table movements after the intermediate stop operation, once the reverse operation occurs, resulting in compromised accuracy of the cylinder. Supply Pressure Set the supply pressure at 0. to 0. MPa. If setting at less than 0. MPa, malfunction of the release brake may occur. If line pressure is used directly as supply pressure, any fluctuation in pressure will appear in the form of changes in cylinder characteristics. Therefore, make sure to use a pressure regulator to convert line pressure into supply pressure for the actuating valve and the brake valve. In order to actuate multiple cylinders at once, use a pressure regulator that can handle a large air flow volume and also consider installing a surge tank. 27

4 Mechanically Jointed y-rodless Cylinder with Brake Series ø, ø, ø ow to Order y-rodless cylinder (With brake) G 0 MBW Made to Order Refer to page 29 for details. Bore size mm mm mm Number of auto switches Nil S n 2 pcs. 1 pc. n pcs. Bore size Cylinder stroke Maximum Standard stroke manufacturable stroke , 200, 0, 0, 00, 00, 700, 00, 900, 00 0, 200, 0, 0, 00, 00, 700, 00, 900, 00 0, 200, 0, 0, 00, 00, 700, 00, 900, 00 When stroke is required, which is longer than the standard stroke, refer to the Made to Order Specifications for long stroke type (XB11). uto switch Nil Without auto switch (Built-in magnet) For the applicable auto switch model, refer to the table below. uto switches are shipped together (not assembled) Stroke adjustment unit symbol Refer to page 29 for stroke adjustment unit. pplicable uto Switches/Refer to pages 193 to 2007 for further information on auto switches. Type Solid state auto switch Reed auto switch Special function Diagnostic indication (2-color indication) With timer Load voltage Lead wire length (m) Electrical Wiring uto switch model entry (Output) 0. 3 Pre-wired pplicable load DC C (Nil) (L) (Z) connector 3-wire (NPN) MN IC V,12 V 3-wire (PNP) MP circuit 2-wire 12 V MB 3-wire (NPN) MNW IC Relay, Grommet Yes 24 V V,12 V 3-wire (PNP) MPW circuit PLC 2-wire 12 V MBW 3-wire (NPN) MNT IC V,12 V 3-wire (PNP) MPT circuit 3-wire IC V E7 Grommet Yes (NPN equivalent) circuit 12 V 0 V E73 2-wire 24 V Relay, PLC N0 V,12 V 0 V or less E0 IC circuit Solid state auto switches marked with are produced upon receipt of order. Lead wire length symbols: 0. m Nil (Example) MBW 3 m L (Example) MBWL m Z (Example) MBWZ Indicator light For details about auto switches with pre-wired connector, refer to pages 190 and 191. uto switches are shipped together (not assembled). (For details about auto switch mounting, etc., refer to page 3.) 2

5 y-rodless Cylinder Series Symbol -XB11 Made to Order Specifications (For details, refer to pages 2033 to 212.) Specifications Long stroke type Stroke djustment Unit Specifications Unit symbol Configuration Shock absorber model Stroke djustment Unit Symbol Cylinder Specifications Bore size Guide type Fluid ction Operating pressure range (MPa) Proof pressure (MPa) mbient and fluid temperature Piston speed (mm/s) Cushion Lubrication Stroke length tolerance Port size Rc Front port, Side port, Bottom port Brake Specifications Spacers are used to fix the stroke adjustment unit at an intermediate stroke position. Lock operation Fluid Maximum operating pressure (MPa) Brake releasing pressure (MPa) Brake activating pressure (MPa) Braking direction Without unit Nil S S 7S Stroke djustment Unit Shock bsorber Model ø ø ø RB12 RB201 Shock bsorber Specifications pplicable cylinder size Shock absorber model Max. energy absorption (J) Stroke absorption Max. collision speed (mm/s) Max. operating frequency (cycle/min) Spring force (N) pplicable cylinder size Stroke adjustment range by intermediate fixing spacer Without spacer With short spacer With long spacer Extended Retracted RB201 RB RB12 + with adjustment bolt 0 to to to 34. Right side stroke adjustment unit : With high load shock absorber + djustment bolt S 7 With short spacer S 7 With long spacer S RB Cam follower guide type ir Double acting 0.1 to to 0 C (No freezing) 0 to 00 ir cushion Not required (Non-lube) / 1/4 Spring locking (Exhaust lock) ir Both directions Stroke adjustment range is applicable for one side when mounted on a cylinder. The shock absorber service life is different from that of the cylinder depending on the operating conditions. Refer to the Specific Product Precautions for the replacement period. Without unit Left side stroke : With high load shock absorber adjustment + djustment With short spacer unit bolt With long spacer Stroke adjustment unit mounting diagram Stroke adjustment unit Intermediate fixing spacer Example of 7 attachment Left side unit Long spacer RB Right side unit Short spacer Operating temperature range ( C) to 0 Stroke adjustment range is applicable for one side when mounted on a cylinder. The shock absorber service life is different from that of the cylinder depending on the operating conditions. Refer to the Specific Product Precautions for the replacement period. RB12 + with adjustment bolt 0 to to to 3 Port RB201 + with adjustment bolt 0 to 1 1 to to 4 Spacer length Port 29 CN2

6 Series Theoretical Output (N) Bore size Piston area (mm 2 ) Operating pressure (MPa) Weight (kg) Bore size Basic weight dditional weight per each 0 mm of stroke Side support weight (per set) Type Type B Stroke adjustment unit weight (per unit) Option Stroke djustment Unit Model Cylinder bore size mm mm mm Components Parts ML1-2 (Without spacer) ML1 Stroke adjustment unit Symbol Stroke adjustment unit unit N Unit part no. Mounting position For both sides Note) For details about adjustment range, refer to page 29. ML1-2- (With short spacer) Intermediate fixing spacer Nil 7 Without spacer Short spacer Long spacer Spacer shipping method Nil N ssembled as a unit Spacer only ML1-2-7 (With long spacer) Stroke adjustment unit Spacer length Spacers are used to fix the stroke adjustment unit at an intermediate stroke position. Spacers are shipped in 2 piece sets. Intermediate fixing spacer ML1-2-N (Short spacer only) Short spacer ML1-2-7N (Long spacer only) Short spacer Long spacer Long spacer Side Support Part No. Bore size Type Side support Side support B MY-S MY-SB For details about dimensions, etc., refer to page 34. MY-S MY-SB MY-S MY-SB

7 y-rodless Cylinder Series Construction Principle of Brake Brake holder Brake shoe 1 ir passage Overrun Brake shoe 2 ir tube Brake Capacity Brake spring olding Force (Maximum static load) Bore size Brake diaphragm (Brake operating state) (Brake released state) olding force 0N 00N 00N 1. The holding force is the lock s ability to hold a static load that does not involve vibrations or shocks, after it is locked without a load. Therefore, to use the cylinder near the upper limit of the constant holding force, be aware of the following: Select the cylinder bore size so that the load is less than 0% of the holding force. If slipping occurs when the load is over holding force, the brake shoe will be damaged, and it is possible the holding force will become smaller or the cylinder life shortened. Overrun Start Stop signal (Run) Idle running distance Braking distance Stop distance (Overrun) Overrun model When cylinder is stopped at intermediate strokes, idle running distance is from detection of stop signal to beginning of brake operation and braking distance is from beginning of brake operation to the stop of slider. mount of overrun 0 0 Driving pressure: 0. MPa Brake releasing pressure: 0. MPa Mounting position: orizontal Stop position Load 0% No load Slider Brake plate llowable Kinetic Energy Bore size llowable kinetic energy (J) Stop dispersion Stopping ccuracy Piston speed (mm/s) 0 [natomy of Brake Operation] Spring force generated by the brake spring works on a brake shoe 1 fixed to the brake holder, bend brake plate fixed on head cover on both sides, brake rails and holds brake plate between brake shoe 1 and brake shoe 2 fixed to slider side so that slider will stop. [Brake releasing] ir pressure supplied from the head cover side goes to the slide table through the air tube and acts on the brake diaphragm, reducing the spring. When cylinder is stopped at intermediate stroke, there is dispersion of stop position. Dispersion of stop position is changed dependent on piston speed, load, piping condition and control method. Use values in the table below as reference Stopping accuracy ±0. ±1.0 ±2.0 ±3.0 ±4.0 Conditions Driving pressure: 0. MPa Brake releasing pressure: 0. MPa Load: % Solenoid valve for releasing brake is connected to cylinder directly. Dispersion of the control system is not included CN2 Piston speed just before stop (mm/s) mount of overrun The graph above shows the relation between piston speed and overrun. (The length of overrun is changed, dependent on piston speed, load, piping conditions and control method. Be sure to adjust the stop signal position, etc. by trial operation with the actual machine.)

8 Series Manual Operation Cam follower adjustment side exagon wrench Cushion Capacity Manual override rod exagon socket tapered plug Warning Cushion selection <ir cushion> ir cushion is standard on y-rodless cylinder. The air cushion mechanism is incorporated to prevent excessive impact of the piston at the stroke end during high speed operation. ir cushion is not applied for slow piston operation around the stroke end. range of the mass and speeds that an air cushion can absorb is within the limits shown in the graph, ir Cushion bsorbing Capacity. <Stroke adjustment unit with shock absorber> Use this unit to decelerate the cylinder when mass and speed are beyond the air cushion limit lines or when the stroke adjustment causes limited or no cushion engagement. Note) 1. djust the shock absorber so that stroke will be fully utilized to near the limit of allowable energy, because absorption capacity becomes extremely small if the absorber s effective stroke is short due to a stroke adjustment. 2. When the shock absorber is used within the air cushion stroke range, almost open the air cushion needle (about 1 turn from the fully closed position). ir Cushion Stroke Bore size ø ø ø Cushion stroke In the case of manual operation, be sure to supply air for brake releasing. If not, this may result in damage to the brake, which will cause a cylinder malfunction. [Brake releasing] 1. Supply the air for releasing the brake to the braking air port on the head cover. This should be 0.4 to 0. MPa. 2. Loosen the manual override (nickel plated) rod on the slide table by using a hexagon wrench, and draw the rod until it reaches to the end. The size of the hexagon wrench should be 3 mm (, ) or 4 mm (). 3. Exhaust the air to release the brake. djusting Procedure Manual Rod Drawing Dimensions Model Stroke djusting Unit with Shock bsorber/ Calculation of bsorbed Energy Type of impact Kinetic energy E1 Thrust energy E2 [Brake operation] 1. Supply the air for releasing the brake to the braking air port on the head cover. This should be 0.4 to 0. MPa. 2. Push the manual rod and then screw it until it is housed inside a slider completely. 3. Exhaust the air to release the brake. orizontal collision bsorbed energy E1 + E2 E Symbol V: Impact speed (m/s) g: Gravitational acceleration (m/s 2 ) W: Impact object mass (kg) F: Cylinder thrust (N) s: Stroke length of shock absorber (m) Note) The speed of the impact object is measured at the moment of impact with the shock absorber. Unit fixing bolt Vertical (Downward) W V 2 2 Lock nut for absorber Vertical (Upward) F s F s + W s g F s W s g Lock nut for adjustment bolt Shock absorber ir Cushion bsorption Capability Payload W (kg) djustment bolt <Moving and fixing unit> Remove the dust proof cover, loosen the four fixing bolts to move the unit body. The unit body can be fixed by tightening four holding bolts evenly at an arbitrary position. owever, there is a possibility that the adjustment mechanism will be tilted due to high impact energy. Since the holder mounting bracket for adjustment is available as an option for -X41, -X417, we recommend that you use it. Please refer to holder mounting bracket in Made to Order Specifications (2). If any other length is desired, please consult with SMC. <Stroke adjusting of adjustment bolt> fter loosening the lock nut for adjustment bolt, adjust the stroke with hexagon wrench. Then, tighten lock nut. <Stroke adjusting of shock absorber> fter loosening the lock nut for the shock absorber, adjust the stroke by rotating shock absorber, then fix the shock absorber by tightening lock nut. Do not over tighten the lock nut.

9 y-rodless Cylinder Series Basic Type +0.0 ø depth BB 4 x V depth W 4 x øs through, counterbore øt, depth U +0.0 CC depth DD B + Stroke Manual override rod CN2 3 x Rc FF ctuating port depth 2 x Rc FF ctuating port + Stroke +0.0 ø depth 2 x Rc FF ctuating port 3 x Rc FF Brake releasing port 4 x Rc FF ctuating port P + Stroke 4 x Y depth Z Bottom Side Piping Port Size (Mounting side should be processed according to the dimensions below.) Model OO PP QQ RR SS TT UU VV pplicable gasket C11.2 C11.2 C Model B C D E F G I J K L M N O P Q R 24 3 S... T 9 11 U... V M x 0. M x 1 M x 1. W. 12 Y M x 1 M x 1. M x 1. Z Model BB CC DD EE 7 FF GG II / 1 / 1 / JJ 1 17 KK LL MM NN WW XX ZZ 33

10 Series Stroke djustment Unit Part no. ML1- ML1- ML1- pplicable bore E EB EC ED EF EY S T E EI TT Max. 1. Max. 20 Max. h 4... i 3 Shock absorber model RB12 RB201 Side Support Side support 2 x øg 2 x ø Side support B 2 x J Part no. MY-S MY-S MY-S B B B pplicable bore 3 12 B C 3 4 D E F G J M x 1 M x 1. M x 1. 34

11 y-rodless Cylinder Series Construction #9 %7 # #7 %!0 Component Parts No e $2 q Description Cylinder tube ead cover WR assembly ead cover WL assembly Slide table Piston assembly Brake diaphragm assembly End Cover Wear ring ir joint assembly Plate tensile table Stopper Belt separator Port joint Brake holder assembly Spring holder Seal belt Dust seal band Rail Belt clamp Cam follower Eccentric screw cap Lock nut Bushing Dust proof cover mountable R Dust proof cover mountable L Dust cover Magnet assembly Seal lock plate Slider cover assembly Diaphragm plate assembly Diaphragm ring $ @ %!1 $!3 $9!2 y $ $7!4!$0 Material Chrome molybdenum steel Special resin Rolled steel Carbon steel Special resin Carbon steel Carbon steel Special resin ard steel wire material Special resin Rolled steel t!7 %3 %4 $1 $3 $4 Note Nickel plated Nickel plated Nickel plated Gas soft nitrided Gas soft nitrided @0 nodized Nickel plated Chromated Chromated (ø only) # No r o %1 u i %0 Component Parts Description Cam follower cap Tube cover Brake shoe Joint ring ir coupler 2 Brake plate Manual rod 1 Manual rod 2 Brake spring ir tube Cable Tube guide assembly Guide tube Tension rod Spacer Needle gasket Tube gasket Cushion seal Piston seal Scraper Bypass w # Material Special friction material Carbon steel Carbon steel Special resin Rolled steel Note ard chrome plated Nickel plated Chromated Nickel plated 3 CN2

12 D-E7, D-E0 Series uto Switch Mounting uto Switch Proper Mounting Position (Detection at Stroke End) Lead wire clamp uto switch Lead wire cap Note) Position auto switch's indicator sight toward the slide table side. Lead Wire Clamp/Lead Wire Cap (Option) Series Lead wire clamp Lead wire cap LC-01 LP-01 Series Mounting position B ø ø ø D-M D-M W D-M T Lead wire clamp uto switch Lead wire cap B Lead Wire Clamp/Lead Wire Cap (Option) Series Lead wire clamp Lead wire cap LC-01 LP-01 Series Mounting position B ø ø ø Minimum Stroke for uto Switch Mounting No. of auto switches mounted 1 pc. 2 pcs. pplicable auto switch D-E7, D-E0 D-M, D-M W, D-M T 1 uto Switch Mounting Bracket: Part No. Operating Range uto switch model D-E7, E0 D-M, M W, M T 4 Bore size 4 Since this is a guideline including hysteresis, not meant to be guaranteed. (ssuming approximately ±% dispersion.) There may be the case it will vary substantially depending on an ambient environment. 4 Bore size uto switch mounting bracket part no. BMY1-0 BMY2-0 Note Switch mounting screw M2. x L Switch mounting nut Switch mounting screw M2. x 12 L Switch mounting nut uto switch model D-E7. 0 D-M D-M W D-M T 3

13 Series Specific Product Precautions Be sure to read before handling. Refer to front matter 39 for Safety Instructions and pages 3 to 12 for ctuator and uto Switch Precautions. Caution Caution djustment 1. Even though hy-rodless cylinders can be loaded within the maximum allowable moment and payload, precise alignment is required if connected to a payload which has an external support structure. s the stroke becomes longer, variations in the center axis become larger. Consider using a connection method (floating mechanism) that is able to absorb deflection. 2. Due to the factory pre-adjusted guide and brake plate, readjustment is not required under normal operating conditions. Therefore, do not unnecessarily alter the guide adjustment setting. 3. Do not operate the cylinder in an environment in which the cylinder will be exposed to cutting chips, dust (paper debris, lint, etc.), spatter or cutting fluid (gas oil, water (warm water), etc.), which could lead to operational problems. 4. It is recommended that grease be applied periodically to the sliding portion of the bearing and to the dust seal band to increase their service life.. Take precautions under operating conditions in which negative pressure is generated inside the cylinder by external forces or inertial forces. ir leakage may occur due to separation of the seal belt. Do not generate negative pressure in the cylinder by forcibly moving it with an external force during the trial operation or dropping it with self-weight under the non-pressure state, etc. When the negative pressure is generated, slowly move the cylinder by hand and move the stroke back and forth. fter doing so, if air leakage still occurs, consult with SMC.. Since the hy-rodless cylinders have a unique seal structure, a slight speed change may occur. For applications that require constant speed, select an applicable equipment for the level of demand. 7. The hy-rodless cylinder does not guarantee traveling parallelism. When accuracy in traveling parallelism and a middle position of stroke is required, consult with SMC.. When the cylinder is used extremely infrequently, operation may be interrupted in order for anchoring and a change lubrication to be performed or service life may be reduced. 9. Mount a cylinder after confirming the cylinder tube is not twisted. If flatness of the mounting surface is not sufficient, the cylinder tube may be twisted, which may cause air leakage due to separation of the seal belt, damage to a dust seal band, or malfunctions. andling Precautions 1. Do not scratch or dent the outside surface of the cylinder tube. This may result in damaged bearings or scrapers, which can cause cylinder malfunction. Caution ead cover andling Precautions 2. Do not apply a load to the dustproof cover. It may cause malfunction. 3. Since the slide table is supported by precision bearings, do not subject it to strong impact or excessive moment when mounting workpieces. 4. Do not mount a slide table on the fixed equipment surface. It may cause damage or malfunctions since an excessive load is applied to the bearing. Service Life and Replacement Period of Shock bsorber Caution ead cover Slide table ead cover Slide table Cylinder tube Mounting with a slide table (slider). Consult with SMC when mounting in a cantilevered way. Since the cylinder body deflects, it may cause malfunctions. Consult with SMC when using it this way. Slide table Cylinder tube Mounting in a cantilevered way. Fixed parts of the cylinder on both ends must have at least mm of contact between where the bottom of the cylinder tube and the equipment surface. Cylinder tube mm or more mm or more 7. Consider uncalculated loads such as piping, cableveyor, etc., when selecting a load moment. Calculation does not include the external acting force of piping, cableveyor, etc. Select load factors taking into account the external acting force of piping, cableveyor, etc. 1. llowable operating cycle under the specifications set in this catalog is shown below. 1.2 million cycles RB0 2 million cycles RB to RB27 Note) Specified service life (suitable replacement period) is the value at room temperature (20 to C). The period may vary depending on the temperature and other conditions. In some cases the absorber may need to be replaced before the allowable operating cycle above. 37 CN2