Toothed belt axis ELGC-TB-KF. Operating instruction [ ]

Transcription

1 Toothed belt axis ELGC-TB-KF en Operating instruction [ ]

2 Original instructions Identification of hazards and instructions on how to prevent them: Danger Immediate dangers which can lead to death or serious injuries Warning Hazards that can cause death or serious injuries Caution Hazards that can cause minor injuries Other symbols: Note Material damage or loss of function Recommendations, tips, references to other documentation Essential or useful accessories Information on environmentally sound usage Text designations: Activities that may be carried out in any order 1. Activities that should be carried out in the order stated General lists Result of an action/references to more detailed information 2 Festo ELGC-TB-KF

3 English Toothed belt axis ELGC-TB-KF Table of contents 1 About this document Safety Safety instructions Use for intended purpose Qualification of specialized personnel Further information Service Product overview Function Design Transport Mounting Preparation Mounting Attachment Mounting accessories Commissioning Service Dismounting Disposal Fault clearance Technical data Characteristic curves Festo ELGC-TB-KF English 3

4 1 About this document For all available product documentation The ELGC-TB-KF toothed belt axis is designated the product or axis in these operating instructions. 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 storage times are short. Protect the product during operation from damaging influences. Damaging influences include grinding dust, glowing chips or sparks. Comply with tightening torques. Unless otherwise specified, the tolerance is ± 20 %. 2.2 Use for intended purpose The axis is intended to be used for positioning payloads in combination with tools or as a drive when external guides are used. The axis is approved for the slide operating mode Fig. 1. Fig. 1 The axis is not approved for operating conditions in which vegetable and water-soluble greases or oils can penetrate into the axis. 2.3 Qualification of specialized personnel Only qualified personnel may perform installation, commissioning, maintenance and disassembly of the product. The qualified personnel must be familiar with installation and operation of electrical control systems. 3 Further information Accessories Spare parts 4 Festo ELGC-TB-KF English

5 4 Service Contact your regional Festo contact person if you have technical questions 5 Product overview 5.1 Function A toothed belt on the drive shaft converts the rotary movement of a motor into a linear movement. As a result, the slide 4 moves backwards and forwards. The slide is ball bearing guided. The reference position of the slide can be queried by means of a proximity sensor ( 7.4 Mounting accessories) or determined by referencing against a fixed stop (end position on motor side). 5.2 Design aj 1 Drive hub 2 Interface for motor mounting kit 3 Cover strip 4 Slide 5 Thread/centring holes for attachment components Fig. 2 6 Thread for accessories 7 Profile housing with ball bearing guide 8 Sealing air connection 9 Slot for sensor bracket aj Slots for attachment Festo ELGC-TB-KF English 5

6 6 Transport Note Unexpected movement of components. The axis is non-braking. Without input torque, the slide is freely movable. Secure slide during transport. Take product weight into account 13 Technical data. Comply with maximum permitted support spacing when attaching transportation aids 14 Characteristic curves. 7 Mounting 7.1 Preparation Do not modify the screws and threaded pins. Exception: immediate requirement for change by these operating instructions. Select the motor and motor attachment kit from Festo When using other motors, observe the limit values for forces, torques and speeds 13 Technical data. When mounting the motor: Follow the assembly instructions for the motor attachment kit. For large and heavy motors: Support the axis-motor combination so it is free from tension. Fig. 3 Connect motor cables only after the axis is mounted. Note The reference position is lost when the motor is dismantled (e.g. when turning the motor around). Start homing 8 Commissioning. 6 Festo ELGC-TB-KF English

7 Caution For vertical or slanted mounting position: When power is off, the slide can travel or fall uncontrolled into the lower end position. Injury due to impact or pinching. Bring the moving parts of the product into a safe end position or secure them against accidental falling. Place the product in such a way that its control sections are accessible (e.g. band reversing). Install product without tension or distortion. Fasten product to a mounting surface with flatness of 0.05 % of the stoke length, but max. 0.5 mm. For gantry applications, attention must also be paid to parallel alignment or product heights in alignment of the axes. For additional information, contact your local Festo Service. Take the required support clearances into consideration 14 Characteristic curves. Fig Mounting Select mounting components Mount the mounting components outside the positioning range to avoid collisions. Fasten axis to the profile (e.g. with profile mounting EAHF-L2). Tighten screws evenly. Fig. 5 Festo ELGC-TB-KF English 7

8 7.3 Attachment Prerequisites Note A warped attachment component bends the slide and shortens the service life of the guide. Use an attachment component with an even surface. Evenness: t = 0.01 mm t Fig. 6 Place rated load in such a way that the break-down torque resulting from force F (parallel to the axis of motion) and lever arm are kept as small as possible Fig. 7. a F Avoid collisions of the mounting part and payload with other mounting parts Fig. 8. Fig. 7 Fig. 8 Mounting Fasten the attachment to the slide with screws and centring sleeves. Observe screw-in depth D and Tightening torque Tab. 1. For attachment components with their own guide: Adjust the guide and axis so that they are exactly parallel, or use a connection that permits tolerance compensation. In this way, the guide is not overloaded. Fig. 9 Size Screw M4 M5 M6 Screw-in depth D [mm] Tightening torque [Nm] Centring H7 7 Tab. 1 8 Festo ELGC-TB-KF English

9 7.4 Mounting accessories To protect the end positions against uncontrolled excess travel: Check the necessity of proximity sensors (hardware limit switches). If proximity sensors are used as limit switches: Preferably use proximity sensors with normally-closed function. This protects against excess travel beyond the end position, if the proximity sensor cable is broken. If proximity switches are used as reference switches: Use proximity sensors that correspond to the input of the controller being used. For inductive proximity sensors: Use switch lug Assembly instructions of the accessory. Mounting of proximity sensor Use proximity sensors with sensor bracket (A) in the slot 9 Assembly instructions for the accessory. 9 (A) Fig. 10 Avoidance of contamination Connect sealing air. To do this, remove the cover 8 on the housing and connect compressed air/vacuum. 8 Fig. 11 Festo ELGC-TB-KF English 9

10 8 Commissioning Caution Risk of injury due to unexpected movement of components. Protect positioning range from access. Keep foreign objects out of the positioning range. Perform commissioning at low speed. Fig. 12 Note The toothed-belt elasticity changes acceleration of the axis through the spring effect. This might result in deviations from the acceleration set at the controller. Take deviations into account accordingly. Procedure Purpose Note 1. Check travel Determining the approach direction of the motor 2. Homing Comparison of real situation to the image of the control Even with identical control, motors of the same design can turn in opposite directions due to different wiring. Homing takes place: against the reference switch against the end stop on the motor side. Comply with maximum impact energy Tab. 3. Observe additional information Operating instructions of the drive system. 3. Test run Checking the overall behaviour Check the following requirements: The slide moves through the intended positioning cycle completely. Slide stops as soon as a limit switch is reached. After a successful test run, the axis is ready for operation. Tab. 2 Size Max. impact energy 1) [10-3 J] ) Max. homing speed for all sizes: 0.01 m/s Tab Festo ELGC-TB-KF English

11 9 Service Caution Unexpected movement of components. Injury due to impact or pinching. Before working on the product, switch off the control and secure it to prevent it from being switched back on accidentally. Note Retensioning shortens the service life of the toothed belt. Do not retension toothed belt. Checking cover strip Check the cover strip after every 2000 km of operating distance. Waves on the cover strip are a sign for wear of the band reverser. Whenever waves form, retighten cover strip on both sides: 1. Loosen screws (C) Fig Push the cover strip into the cover. 3. Tension cover strip with a clamping element (B) Fig. 13. Clamping element 4. Tighten screws (tightening torque 0.2 Nm). If the cover strip can no longer be retensioned: Replace band reversers and cover (B) (C) Fig. 13 Cleaning Clean the axis as required with a soft cloth. Do not use aggressive cleaning agents. Festo ELGC-TB-KF English 11

12 10 Dismounting Caution Unexpected movement of components. Injury due to impact or pinching. Before working on the product, switch off the control and secure it to prevent it from being switched back on accidentally. Observe instructions on transport 6 Transport. Remove motor cables and mounting components. Information about spare parts and auxiliary means 11 Disposal Dispose of the packaging and the product through environmentally friendly recycling in accordance with applicable regulations. 12 Festo ELGC-TB-KF English

13 12 Fault clearance Malfunction Possible cause Remedy Squeaking noises, vibrations or the axis is not running smoothly. Coupling spacing is wrong. Tensions Vibrations at the carriage Oscillation decay time of the profile is too long Resonance point of the actuator Controller is set incorrectly. Operation in the resonance point of the axis. Self-generated frequency from profile and payload is too low Comply with permissible coupling distances Assembly instructions, motor mounting kit. Install axis without tension, Maintain evenness of bearing surface 7.1 Preparation. Change the arrangement of the attachment component/payload. Align axis so it is exactly parallel to the second axis. Change travel speed. Change parameters (e.g. controller data). Change travel speed. Change acceleration. Reinforce axis mounting. Change payload geometry. Reinforce axis mounting. Change payload geometry. Slide does not move. Coupling spins. Check mounting of shaft-hub connection Assembly instructions, motor attachment kit. Load levels are too high. Reduce load mass/torques. Slide travels over end position. Toothed belt jumps off. Cover band has waves. Aluminium wear on axis Retaining screws on tool are too long. Toothed belt has broken Proximity sensor does not switch. Controller is set incorrectly. Toothed belt tension is too low. Wear on cover band reversers. Observe screw-in depth 7.3 Attachment. Replace axis Check proximity sensor, connections and controller. Change parameters (e.g. controller data). Contact local Festo Service. Retension cover band 9 Service. Replace band reverser Toothed belt wear Wear on the toothed belt Replace axis Tab. 4 Festo ELGC-TB-KF English 13

14 13 Technical data Size 1) Design Electromechanical axis with toothed belt Guide Recirculating ball bearing guide Mounting position Any Max. feed force F x [N] Max. no-load driving torque 2) [Nm] Max. driving torque M max. [Nm] Max. speed [m/s] Max. acceleration [m/s 2 ] 15 Repetition accuracy [mm] ± 0.1 Feed constant [mm/rev] Ambient temperature [ C] Storage temperature [ C] Degree of protection IP40 2nd moment of area I y [mm 4 ] 140 x x x 10 6 I z [mm 4 ] 170 x x x 10 6 Max. permitted forces on the slide 1) F y [N] F z [N] Max. permitted torques on the slide 1) M x [Nm] M y = M z [Nm] ) The PositioningDrives engineering software is available for sizing 2) At a speed of 0.2 m/s Tab Festo ELGC-TB-KF English

15 Size Note on materials Contains paint-wetting impairment substances Materials Cover Painted aluminium Profile Anodised aluminium Slides Aluminium Guide, screws, ball bearings, spindles, Steel cover band Covers PA Belt reverser POM Toothed belt CR (glass-fibre reinforced) Weight Zero stroke length [kg] Per metre of stroke [kg] Tab. 6 Festo ELGC-TB-KF English 15

16 14 Characteristic curves Force F y /F z and support spacing L at a maximum deflection of 0.5 mm L L ELGC-TB-KF-45 ELGC-TB-KF-45 ELGC-TB-KF-60 ELGC-TB-KF-60 Fig. 14 ELGC-TB-KF-80 ELGC-TB-KF Festo ELGC-TB-KF English

17 Festo ELGC-TB-KF English 17

18 Copyright: Festo AG & Co. KG Ruiter Straße Esslingen Germany Phone: Fax: 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. service_international@festo.com Internet: