Rack and pinion axis EHMH en Operating instructions 8076544 2017-09 [8076555]
Translation of the original instructions GDCP-EHMH-EN Symbols used: Caution Hazards that can cause minor injuries Note Material damage or loss of function Recommendations, tips, references to other documentation Essential or useful accessories Information on environmentally sound usage 2 Festo EHMH 2017-09
English Rack and pinion axis EHMH Table of contents 1 About this document... 5 2 Safety... 5 2.1 Safety instructions... 5 2.2 Intended use... 5 2.3 Foreseeable misuse... 5 2.4 Training of specialized personnel... 6 3 Additional information... 6 4 Service... 6 5 Product overview... 7 5.1 Function... 7 5.2 Configuration... 7 6 Transport... 8 7 Storage... 9 8 Mounting... 10 8.1 Preparation... 10 8.2 Mounting... 11 8.2.1 Rack and pinion axis above the base plate... 11 8.2.2 Fastening the payload... 14 8.2.3 Tightening torques... 15 9 Commissioning... 16 9.1 Preparation... 16 9.2 Procedure... 16 Festo EHMH 2017-09 English 3
10 Operation... 17 11 Maintenance... 18 11.1 Maintenance intervals... 18 11.2 Lubricant consumption in continuous operation... 18 11.2.1 Gear rack... 18 11.2.2 Guide carriage... 18 11.3 Cleaning... 19 11.3.1 Basic cleaning... 19 11.4 Collision... 19 12 Dismounting... 19 13 Disposal... 19 14 Fault clearance... 20 15 Technical data... 21 15.1 General remarks... 21 15.2 Drive... 21 15.3 Gear unit... 22 15.4 Materials... 22 15.5 Dimensions and weight... 22 4 Festo EHMH 2017-09 English
1 About this document For all available product documentation www.festo.com/pk The rack and pinion axis EHMH is designated as a product in these operating instructions, as well. Read the operating instructions carefully before starting all work on the product. 2 Safety 2.1 Safety instructions Observe product labelling. Before working on the product, switch off the power supply and secure it against being switched on again. Store the product in a cool, dry, UV-protected and corrosion-protected environment. Ensure that storage times are kept to a minimum. Protect the product during operation from damaging influences. Damaging influences include grinding dust, glowing chips or sparks. Use the product only within the defined values Take into consideration the legal regulations for the respective destination 2.2 Intended use The rack and pinion axis EHMH is properly used for lifting and lowering permissible payloads in a vertical direction. The Z-axis is intended as a Rack and Pinion axis for use as a single axis and/or in the handling and multi-axis modular system of FESTO AG & Co KG. Note Damage to the product. Preferably operate the rack and pinion axis in a vertical alignment. Horizontal alignment on request. 2.3 Foreseeable misuse Usage of the clamping unit for braking the movement Run to block Usage of individual components for other purposes Festo EHMH 2017-09 English 5
2.4 Training of specialized personnel Only qualified personnel may perform installation, commissioning, maintenance and disassembly of the product. 3 Additional information Accessories www.festo.com/catalogue. 4 Service Contact your regional Festo contact person if you have technical questions www.festo.com. 6 Festo EHMH 2017-09 English
5 Product overview 5.1 Function This product is an electromechanical linear axis in cantilever arm slide operation. The vertically aligned rack and pinion axis is driven by a pinion installed directly behind the gear unit. The stroke is performed through the rolling of the pinion on a rack, which is permanently connected to the axis. Thepayload is defined and limited for this interface Chapter 8.2. 5.2 Configuration 1 Energy chain 2 Clamping unit 3 Wiper package on guide carriage 4 Drill holes 13 mm for load suspension (see opposite) 5 End-position buffer 6 Cover of drive pinion 7 Gear unit with motor flange 8 Pneumatic latching system 9 Receiving plate for payload aj Guide rail aa Base plate ab Switch lug for sensor rail system ac Carrier tube ad Measuring head of displacement encoder ae Central lubricant distributor and lubricating pinion set ae ad ac 1 2 3 4 5 6 7 8 9 ab aa aj Fig. 1 Festo EHMH 2017-09 English 7
6 Transport Warning Crushing (death) due to falling components. Do not stand or work under the suspended system or other system parts. Note Damage to the product. Do not transport the rack and pinion axis with a forklift truck. Use both drill holes for load suspension devices4 and load them evenly and simultaneously. Use the lifting eye bolts or shackle for this purpose. After transport, remove all load suspension devices again. Do not stand on the load or load suspension device. Requirements for transport The connecting screws on the mounting plate are loosed on the complete rack and pinion axis. All of the parts adjacent to the rack and pinion axis are disassembled. All hose, pipe and cable connections are disconnected from the product and stored in a secure manner for transport. Performing transport Take product weight into account 15 Technical data. Attach suitable load suspension devices or lifting gear in such a manner that no sensitive machine parts are touched. Avoid vibrations and jolts during lifting and setting down. 8 Festo EHMH 2017-09 English
7 Storage Note Damage to the product. Store the rack and pinion axis in a horizontal position only. Make sure no other parts are stored on the rack and pinion axis. Leave the product in the original packaging during storage. The electrical components of the product must be stored in a clean, dry environment must not be stored outdoors Storage period and temperature 15 Technical data. Before and after storage: Check the corrosion protection of all unpainted surfaces (sliding surfaces, racks) and replace if necessary. Festo EHMH 2017-09 English 9
8 Mounting 8.1 Preparation Clean the contact surfaces, threaded holes and through-holes thoroughly. Select the motor and axial kit from the Festo catalogue: www.festo.com/catalogue. When mounting the motor: Follow the assembly instructions of the axial kit. Connect the motor cables after mounting the rack and pinion axis. Note The reference position is lost when the motor is dismounted (e.g., when turning the motor around). Start homing 9 Commissioning. Caution For a vertical mounting position: When de-energised, the rack and pinion axis can travel to the lower end position in an uncontrolled manner. Injury due to impacts or pinching. Bring moving parts of the product into a safe end position or secure them against falling. Place the product in such a way that the operating elements can be reached. Install product without tension or distortion. Fasten the product to a mounting surface with flatness of 0.05 % of the stoke length, but max. 0.5 mm. For additional information, contact your local Festo Service. Fig. 2 10 Festo EHMH 2017-09 English
8.2 Mounting 8.2.1 Rack and pinion axis above the base plate Size 80 1 1 Drill hole for centring sleeve Fig. 3 Base plate for size 80 Festo EHMH 2017-09 English 11
Size 140 1 1 Drill hole for centring sleeve Fig. 4 Base plate for size 140 12 Festo EHMH 2017-09 English
Dimensions of the base plate Size 80 140 B1 [mm] 260 300 B2 [mm] 15 35 B3 [mm] 55 60 B4 [mm] 205 265 B5 [mm] 245 L1 [mm] 590 L2 [mm] 18.5 L3 [mm] 93.5 L4 [mm] 170 L5 [mm] 420 L6 [mm] 496.5 L7 [mm] 571.5 D1 M8 D2 [mm] 15 D3 12 (H7) for centring sleeves H1 [mm] 20 T1 [mm] 2.6 +0.1 T2 [mm] 9.5 Tab. 1 Mounting the rack and pinion axis 1. Select mounting components according to the hole pattern Fig. 3 or Fig. 4. 2. Mount the mounting components outside the positioning range to avoid collisions. 3. Mount the rack and pinion axis above the base plate. 4. Tighten screws evenly. Comply with the tightening torques 8.2.3. Festo EHMH 2017-09 English 13
8.2.2 Fastening the payload Receiving plate 1 1 1 Drill hole for centring sleeve Fig. 5 Receiving plate Dimensions of the receiving plate Size 80 140 L1 [mm] 145 185 L2 [mm] 20 20 L3 [mm] 40 40 L4 [mm] 60 80 B1 [mm] 145 185 B2 [mm] 20 20 B3 [mm] 40 40 B4 [mm] 60 80 H1 [mm] 20 20 D1 [mm] 9 (H7) 9 (H7) D2 M6 M6 D3 [mm] 12 (H7) 12 (H7) D4 [mm] 8.5 8.5 T1 [mm] 2.1 +0.1 2.1 +0.1 T2 [mm] 2.6 +0.1 2.6 +0.1 Tab. 2 14 Festo EHMH 2017-09 English
Fastening the payload 1. Select mounting components according to the hole pattern Fig. 5. 2. Mount the mounting components outside the positioning range to avoid collisions. 3. Attach the payload. 4. Tighten screws evenly. Comply with the tightening torques 8.2.3. 8.2.3 Tightening torques Screw diameter Strength class Tightening torque [Nm] M6 8.8 10.6 M6 12.9 18.4 M8 8.8 23.0 Tab. 3 Festo EHMH 2017-09 English 15
9 Commissioning Caution Risk of injury due to unexpected movement of components. Protect the positioning range from unwanted intervention. Keep foreign objects out of the positioning range. Perform commissioning at low speed. In case of malfunctions during operation, switch off the system immediately. 9.1 Preparation Note Hazard due to the rack and pinion axis Train and qualify personnel. Integrate the rack and pinion axis into the overall safety concept of the system. 1. Remove all packaging remainders. 2. Remove the transport restraints (not required in case of the Pneumatic locking system, EPN option). 3. Install measurement and alarm indicators (safety components) before switching on the system and check these components for perfect function. If alarm indicators are activated, do not switch on the system. 4. Set options, such as sensors, limit switches, etc. 5. Lubricate the product after a longer storage time 11.2. 9.2 Procedure Action Purpose Note 1. Check travel Determining the approach direction of the motor 2. Homing run Comparison of real situation to the image of the control 3. Test run Checking the overall behaviour Due to incorrect wiring, the motor may rotate in the incorrect direction. Homing takes place: Against the reference switch Against an end stop Observe additional information Operatinginstructions of the motor. Check the following requirements: The rack and pinion axis moves through the intended positioning cycle completely. The rack and pinion axis stops as soon as alimit switch is reached. Tab. 4 After these measures, the rack and pinion axis is ready for operation. 16 Festo EHMH 2017-09 English
10 Operation Note Destruction of the product due to operational errors. Avoid integrated unit operation. Do not use the clamping unit to brake the axis. Note Axes of the same design may demonstrate different running noises depending on the respective component. The following factors may also influence this issue: Parameterisation Operating mode Type of mounting Installation situation (e.g., rigidity of the foundation, vibration behaviour, resonancefrequencies) Festo EHMH 2017-09 English 17
11 Maintenance Caution Unexpected movement of components. Injury due to impacts or pinching. Before working on the product, switch off the control and secure it to prevent it from being switched back on accidentally. 11.1 Maintenance intervals Component Control Action Repetition Monthly Annually 1000 1) Gear rack Wear Replace X Drive pinion Grease Clean and X Guide carriage percentage relubricate if X Bearing surfaces necessary ofthe guide rails X Steel construction Crack formation Contact Festo X X Deformation Service Centring sleeve on Corrosion the rack Wear X X Screw driving Tightening Tighten the torque screws 2) X X Corrosion Replace Lubricating can Fill level (empty) Replace X 1) Number of operating hours until the maintenance work should be repeated. 2) Observe the tightening torques 8.2.3 using the torque spanner. Tab. 5 11.2 Lubricant consumption in continuous operation Lubricant: LUB-KC1 silicone-free 11.2.1 Gear rack Stroke speed 0.5 m/s 1.0 m/s 1.5 m/s Lubricant consumption 0.05 cm 3 /24 h 0.1 cm 3 /24 h 0.125cm 3 /24 h Tab. 6 11.2.2 Guide carriage Initial filling: 3.0 cm 3 Relubrication: 1.1 cm 3 /24 h 18 Festo EHMH 2017-09 English
11.3 Cleaning Clean the product thoroughly every 6 months or every 500 operating hours. Clean with a soft cloth. Do not use aggressive cleaning agents. 11.3.1 Basic cleaning 1. Remove old grease and clean the respective product parts. 2. Lubricate the roller bearing guides and rack and pinion. 11.4 Collision Note The rack and pinion axis EHMH can be damaged after a collision. Check for possible consequences of the collision and remedy if pertinent: Mechanical damage to the rack and pinion axis Damaged contact pattern of the rack and drive pinion Damaged partitioning at the coupling joints of the rack Contact Festo Service if required. 12 Dismounting Caution Unexpected movement of components. Injury due to impacts or pinching. Before working on the product, switch off the control and secure it to prevent it from being switched back on accidentally. Observe transport notices 6. Remove motor cables and mounting components. 13 Disposal Dispose of the packaging and slide at the end of the production service life according to the valid provisions for environmentally sound recycling. Festo EHMH 2017-09 English 19
14 Fault clearance Malfunction Possible cause Remedy The limit switch does not react Incorrect distance between the sensor and cam Limit switch incorrectly designed Gearing blocked Foreign body between rack and pinion Collision Motor defective or overloaded Load or acceleration too high Brake actuated during trip Collision Homing missing. Lost homing (only for motors without a multiturn resolver) The interlock does not open. Lack of compressed air due to improper tubing connections Valve does not switch Leakage of stopper cylinder too high Check the limit switch and replace if pertinent Remove the blockage and replace any components if pertinent Check the fuse and replace if pertinent Reduce load Exchange the motor Check and clean the limitswitch and replace ifpertinent. Check air supply Check the stopper cylinder and replace if pertinent. Increased running noises Insufficient lubrication Return the product to Increased product temperature Increased no-load driving torque Festo. Tab. 7 20 Festo EHMH 2017-09 English
15 Technical data 15.1 General remarks Size 1) 80 140 Design Z-axis with rack Guide Roller rotation Number of guide carriages 2 4 Mounting position Vertical Working stroke [mm] 250 2500 2) Max. lubricant pressure [bar] 80 Max. operating pressure [bar] 6 Max. storage time [months] 6 3) Degree of protection IP20 Corrosion resistance class CRC 1 LABS criterion LABS-free Ambient temperature [ C] +10 +40 Storage temperature [ C] +10 +40 1) The PositioningDrives engineering software is available for sizing tasks www.festo.com/sp. 2) Assembly in 250 mm steps. 3) As long as no moisture can penetrate, longer storage times are possible. Tab. 8 15.2 Drive Size 80 140 Characteristic value of rack and pinion drive Rack partitioning [mm] 6.666 Rack width [mm] 28 Feed constant [mm/rev] 153.335 Number of teeth of pinion 23 Effective diameter of pinion [mm] 48.8 Max. speed [m/s] 1.5 Max. acceleration [m/s 2 ] 6 Performance of rack and pinion drive Maximum vertical payload [kg] 50 100 Driving torque when idling [Nm] 0.5 Nominal torque of pinion [Nm] 61 120 Max. feed force [N] 2500 4900 Service life in case of maximum load [km] 5000 Repetition accuracy [mm] ± 0.1 Tab. 9 Festo EHMH 2017-09 English 21
15.3 Gear unit Size 80 140 Information regarding the gear unit Gear unit type Right-angle servo gear drive Gearing Hypoid bevel gear Transmission ratio 5 Efficiency [%] 96 Tab. 10 15.4 Materials Size 80 140 Base plate, receiving plate, slide unit Gear rack Guide rail Guide carriage Carrier tube Grease Energy chain Materials of drive unit Gear Lubricating pinion Gear unit/housing Aluminium, Tempered steel Hardened steel, ground on all sides Hardened steel Steel LUB-KC1 silicone-free PA base Case-hardened steel PU Cast-iron Tab. 11 15.5 Dimensions and weight Size 80 140 Dimensions Length at minimum stroke length [mm] 768 732 Length at maximum stroke length [mm] 3268 3232 Width [mm] 411 467 Height [mm] 245 235 Weight Base plate [kg] 17 26 Basic weight of pipe [kg] 23 40 Pipe per metre of stroke [kg/m] 31 52 Total axis [kg] 118 196 Tab. 12 22 Festo EHMH 2017-09 English
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Copyright: Festo AG & Co. KG Ruiter Straße 82 73734 Esslingen Germany Phone: +49 711 347-0 Fax: +49 711 347-2144 Reproduction, distribution or sale of this document or communication of its contents to others without express authorization is prohibited. Offenders will be liable for damages. All rights reserved in the event that a patent, utility model or design patent is registered. E-mail: service_international@festo.com Internet: www.festo.com