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Rohm FORTO-HT 37/70 Translation Of The Original Operating Manual

Cylinder with through-hole
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Translation of the Original Operating Manual
EN
Cylinder with through-hole FORTO-HT
Store for reference
Version 1.0 • 03.05.2022

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Summary of Contents for Rohm FORTO-HT 37/70

  • Page 1 Translation of the Original Operating Manual Cylinder with through-hole FORTO-HT Store for reference Version 1.0 • 03.05.2022...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents About this operating manual .............. 6 Manufacturer Details.................  6 Copyright .................... 6 Liability and Warranty ................ 7 Conventions of Presentation .............. 8 1.4.1 Text Display.................. 8 1.4.2 Display of Safety and Warning Instructions .........  9 Definitions ....................
  • Page 4 Table of Contents Product description .................  22 About this hollow clamping cylinder ............ 22 Options .................... 25 Technical data .................. 26 3.3.1 Overview of construction sizes ............ 26 3.3.2 Name plate .................. 31 3.3.3 Media-carrying connections..............  31 3.3.4 Environmental and operating conditions ...........  31 3.3.5 Permissible operating materials ............
  • Page 5 Table of Contents Production mode .................. 65 Cleaning .................... 66 Cleaning the hollow clamping cylinder ............  66 Cleaning the coolant drip pan and checking for backlogs .......  67 Check leakage oil tank for backlogs............ 67 Maintenance ....................  68 Checking the hollow clamping cylinder ...........  68 Checking the non-return valves ..............

  • Page 6: About This Operating Manual

    1 | About this operating manual About this operating manual This Operating manual describes in detail the use, installation, assembly and maintenance of a cylinder with through-hole FORTO-HT. The efficiency of the cylinder with through-hole depends primarily on correct use and care- ful maintenance.

  • Page 7: Liability And Warranty

    About this operating manual | 1 Liability and Warranty All information and instructions in this Operating manual are given in good faith on the basis of our experience and knowledge to date. The products of RÖHM are subject to constant further development. RÖHM therefore re- serves the right to make any modifications and improvements deemed use- ful.

  • Page 8: Conventions Of Presentation

    1 | About this operating manual ▪ if the operator or third parties carry out modifications or repairs to the services / products without prior permission of RÖHM. Excepted from this are damage or defects which have occurred and which were demonstrably not due to these modifications or repairs.

  • Page 9: Display Of Safety And Warning Instructions

    About this operating manual | 1 1.4.2 Display of Safety and Warning Instructions Safety and warning instructions are marked by pictograms. The signal word and the colouring show the level of danger. Observe the safety instructions to prevent personal injury and damage to property.

  • Page 10: Definitions

    1 | About this operating manual Definitions 1.5.1 Manufacturer of the machine In this Operating manual, the manufacturer of the machine is defined as the company which builds the machine into which the cylinder with through-hole is integrated. 1.5.2 Manufacturer In this operating manual, the manufacturer is defined as the manufacturer of other parts, assemblies or products which are contained in or attached to the cylinder with through-hole such as rotary feed-throughs, o-rings, operat-...

  • Page 11: Dial Gage Symbol

    About this operating manual | 1 1.5.5 Dial gage symbol Apply a dial gage or other suitable measuring instrument max. 0,005 mm for measuring of the radial and axial run-out or other test values at the indicated positions. Besides the dial gage symbol, the respective test value is specified.

  • Page 12: Safety

    2 | Safety Safety Intended Use The cylinder with through-hole may only be used for the following purposes: ▪ To activate rotating chucks, collet chucks, mandrels with a tensioning and loosening function for workpiece clamping in a stationary machine in compliance with all the operating conditions detailed in this Operating manual.

  • Page 13: Rotation

    Safety | 2 ▪ that the responsible personnel have read and understood the operating instructions. ◦ RÖHM recommends that this be documented in a suitable form. ▪ that the cylinder with through-hole is in perfect technical working order. ▪ that any damaged and defective parts are replaced immediately. 2.3.2 Rotation DANGER...
  • Page 14 2 | Safety have arisen due to the modification of the (used) machine or whether an ex- isting risk has increased. Here you can differentiate between three cases here: a) There is no new hazard or an increase in an existing risk so that the ma- chine can still be regarded as safe.

  • Page 15: Qualification Of Operating And Specialist Personnel

    Safety | 2 Qualification of Operating and Specialist Personnel Definition of “skilled worker” A person is designated as a skilled worker when they can assess the work assigned to them and identify possible dangers based on their specialist training, knowledge and experience. They also have knowledge of the relev- ant provisions.

  • Page 16: General Hazards

    2 | Safety General hazards When using the cylinder with through-hole, residual hazards exist ▪ during assembly and set-up work. ▪ during operation. ▪ during maintenance and service work. These residual hazards cannot be completely eliminated considering the functional availability of the Clamping device. This is why the operating manual must be followed.

  • Page 17: Risk Of Burns Due To Hot Surfaces

    Safety | 2 2.6.3 Risk of burns due to hot surfaces Hazard zone Description of the hazard: The cylinder with through-hole may heat up during operation. There is a risk of burning in case of contact with the cylinder with through-hole. Avoiding the hazard: Keep away from the cylinder with through-hole immediately after it was in operation and let it cool down before carrying out any work.

  • Page 18: Danger Of Crushing Due To Moving Control Disc

    2 | Safety 2.6.4 Danger of crushing due to moving control disc 1 Position measuring system op- 3 Control disc tion 2 Piston housing 4 Distributor housing Hazard zone Description of the hazard: When moving the piston, the control disc also moves, giving rise to a crush- ing hazard between the control disc ▪...

  • Page 19: Risk Of Entrapment/Crushing On The Hollow Clamping Cylinder

    Safety | 2 2.6.5 Risk of entrapment/crushing on the hollow clamping cylinder 1 Bars 3 Opening of the piston rod and/ or the material feed pipe option 2 Coolant drip pan Hazard zone Description of the hazard: When bars are guided through the cylinder with through-hole, there is a risk of entrapment/crushing: ▪...

  • Page 20: Risk Of Ejection, Detachment And Falling Of Components At The Hollow Clamping Cylinder

    2 | Safety Avoiding the hazard: ▪ do not reach into the area between the bars and the opening of the coolant drip pan ▪ do not reach into the area between the bars and the opening of the pis- ton rod and/or the material feed pipe 2.6.6 Risk of ejection, detachment and falling of components at the hollow...

  • Page 21: Miscellaneous

    Safety | 2 Miscellaneous 2.7.1 Procedure in the Event of Danger and Accidents In the event of danger and accidents, it must be ensured that first aid meas- ures can be taken immediately. 1. Shut the machine down immediately via the Emergency-Stop button. 2.

  • Page 22: Product Description

    3 | Product description Product description About this hollow clamping cylinder Overview: 1 Coolant drip pan 8 Venting screw “A” (concealed) 2 Distributor housing 9 Transport thread (also oppos- ite) 3 Control disc 10 Leakage oil tank 4 Venting screw “B” 11 Hydraulic connection “B”...
  • Page 23 Product description | 3 Schematic illustration: 1 Hydraulic connection “B” 9 Non-return valve, controllable 2 Hydraulic connection “A” 10 Leakage oil refeed 3 Distributor housing 11 Coolant refeed 4 Non-return valve, controllable 12 Pressure reduction valve 5 Venting screw “A” 13 4/2 directional valve with notch 6 Venting screw “B”...
  • Page 24 3 | Product description Functional description: ▪ The cylinder with through-hole is a double-acting hydraulic cylinder with a completely hollow piston. Bars can be guided through the hollow pis- ton to the chuck. ▪ By means of the standing distributor housing, pressurised hydraulic oil is fed to the rotating piston housing via the hydraulic connections “A”...

  • Page 25: Options

    Product description | 3 Options The following options are available for the cylinder with through-hole: 1 Cover sheet 6 Draw tube 2 Material feed pipe 7 Cylinder flange 3 2x M12 proximity switch (not 8 Leakage oil fitting included in the scope of sup- ply) 4 Switch carrier with limit switch 9 Connection piece for coolant...

  • Page 26: Technical Data

    3 | Product description Technical data 3.3.1 Overview of construction sizes 26 / 80 FORTO-HT EN...
  • Page 27 Product description | 3 Construction Unit FORTO-HT FORTO-HT FORTO-HT FORTO-HT FORTO-HT size 37/70 46/103 52/130 67/150 77/170 37.5 46.5 52.5 67.5 45.2 55.2 74.5 85.3 C2 H8 Stroke D E -0.03 16.6 16.6 15.6 14.6 17.6 K max. K min. K1 max.
  • Page 28 3 | Product description Construction Unit FORTO-HT FORTO-HT FORTO-HT FORTO-HT FORTO-HT size 37/70 46/103 52/130 67/150 77/170 V max. 58.5 58.5 56.5 65.7 187.5 187.5 197.5 222.5 224.5 X1 min. 89.5 89.5 99.5 109.5 104.5 Piston area A 74.0 109.8 142.4 164.5 183.8...
  • Page 29 Product description | 3 Construction Unit FORTO-HT FORTO-HT FORTO-HT FORTO-HT size 86/200 95/225 110/250 127/325 86.5 95.5 110.5 127.5 95.2 105.2 C2 H8 Stroke D E -0.03 14.6 14.6 14.6 20.6 K max. K min. K1 max. K1 min. M95x2 M105x2 M120x2 M135x2...
  • Page 30 3 | Product description Construction Unit FORTO-HT FORTO-HT FORTO-HT FORTO-HT size 86/200 95/225 110/250 127/325 V max 249.5 258.7 270.5 295.5 X1 min. 121.5 127.7 139.5 145.5 Piston area A 212.6 243.5 265.1 336.9 Piston area B 196.9 226.2 247.4 325.7 Operating pres- 8 –...

  • Page 31: Name Plate

    Product description | 3 3.3.2 Name plate The name plate can be found on the distributor housing of the cylinder with through-hole, and it contains the following information (as example): NOTICE: The information on the name plate must be adhered to. 3.3.3 Media-carrying connections Connections at the cylinder with through-hole:...

  • Page 32: Permissible Operating Materials

    3 | Product description Environmental and operating con- Quality requirement(s) ditions Ambient temperature at place of use +5 °C to +60 °C Ambient temperature for storage +15 °C to +70 °C Dry and wet machining Wet compatible with hydraulic fluid and coolant Pollution of the machine’s surroundings caused by the machine itself is per- mitted.
  • Page 33 Product description | 3 ▪ The chuck can be actuated through the cylinder with through-hole with pressure or tension. ▪ The maximum speed of the cylinder with through-hole must not be ex- ceeded. ▪ The cylinder with through-hole must be attached directly to a machine spindle or by means of the cylinder flange option.

  • Page 34: Technical Control Requirements

    3 | Product description 3.3.7 Technical control requirements 3.3.7.1 General technical control requirements ▪ The cylinder with through-hole can be clamped and released in an idle state or under rotation. ▪ In the event of rotation with clamping of a workpiece, either hydraulic connection “A”...
  • Page 35 Product description | 3 3.3.7.2 Setup mode In the “Setup mode” machine operation type ▪ it may not be possible to machine a workpiece. ▪ rotational and linear movements of axes may not overlap. ▪ linear movements of axes must be limited to maximum 2 m/min. ▪...

  • Page 36: Transport

    4 | Transport Transport WARNING Crushing injuries in the event of unsecured transport of the cylinder with through-hole. Falling of the cylinder with through-hole. Ø Use suitable hoisting gear and slings. Ø Wear personal protective equipment. Ø Do not remain under suspended loads. Pre-conditions: ▪...

  • Page 37: Set Down Hollow Clamping Cylinder

    Transport | 4 Procedure: NOTICE If the piston and the control disc are in the front end position, the eyebolt cannot be screwed into the tapped holes for trans- port purposes. Ø Before transport, move the piston and the control disc into the rear end position.

  • Page 38: Assembly

    5 | Assembly Assembly Pre-conditions: ▪ Personnel qualification: Skilled worker ▪ Wear personal protective equipment ▪ The machine is switched off and protected against being switched on again ▪ Contact and centring surfaces at the machine spindle are cleaned Preparing the machine Procedure: max.

  • Page 39: Mounting The Hollow Clamping Cylinder At The Machine Spindle

    Assembly | 5 max. 0.005 mm 1 Centring surface 2 Machine spindle (example) Ÿ Check concentricity at the centring surface at the machine spindle. Mounting the hollow clamping cylinder at the machine spindle Pre-conditions: 1 Piston housing 3 Centring surface 2 Contact surface Ÿ...
  • Page 40 5 | Assembly Procedure: Assembly information for holding screws see following table 1 Machine spindle (example) 2 cylinder with through-hole Assembly information for holding screws FORTO- FORTO- FORTO- FORTO- FORTO- FORTO- FORTO- FORTO- FORTO- HT 37 HT 46 HT 52 HT 67 HT 77 HT 86...
  • Page 41 Assembly | 5 max. 0.01 mm 1 Machine spindle (example) 2 Check collar 3. Check concentricity at the check collar. max. 0.1 mm 1 Machine spindle (example) 2 Control disc 4. Checking axial run-out on the control disc. FORTO-HT EN 41 / 80...
  • Page 42 5 | Assembly max. 0.025 mm 1 Flat surface on distributor 2 Piston housing housing 5. Place dial gauge on distributor housing. The standing distributor hous- ing must not wobble during the rotation of the piston housing. 42 / 80 FORTO-HT EN...

  • Page 43: Assembling The Protection Against Torsion

    Assembly | 5 Assembling the protection against torsion 1 Leakage oil fitting 3 Protection against torsion (ex- ample) 2 Control disc 4 Distance NOTICE: ▪ The distributor housing must be secured against turning in both rota- tional directions. To this end, protection against torsion must be provided for on the machine.

  • Page 44: Assembling Options On The Hollow Clamping Cylinder

    5 | Assembly ▪ The protection against torsion must be designed for a torque of 20 Nm. ▪ The protection against torsion must not exercise pressure on the cylin- der with through-hole and must have a distance of approximately 2 mm to the leakage oil tank and/or the leakage oil fitting in all directions. ▪...
  • Page 45 Assembly | 5 Procedure: 1. Move piston into rear end position. To this end, pressurise hydraulic connection “B”. 2. Insert draw tube completely (with support discs, depending on the design) into the machine spindle. 3. Screw draw tube into the piston of the cylinder with through-hole. Tightening torque 80 Nm.

  • Page 46: Assembling Material Feed Pipe Option

    5 | Assembly 5.4.2 Assembling material feed pipe option 12.9 10 Nm 1 Distributor housing 2 Material feed pipe Procedure: 1. Insert material feed pipe into distributor housing. 2. Fix the material feed pipe to the distributor housing with the holding screws.

  • Page 47: Assembling Leakage Oil Fitting Option

    Assembly | 5 5.4.3 Assembling leakage oil fitting option M5x16 12.9 10 Nm 1 Leakage oil fitting 3 Connection piece for coolant discharge hose 2 Leakage oil tank 4 Coolant drip pan NOTICE: ▪ The leakage oil fitting can be mounted on the leakage oil tank in one of the three positions as shown in the illustration.

  • Page 48: Assembling Cover Sheet Option

    5 | Assembly Procedure: 1. Screw the leakage oil fitting onto the leakage oil tank in the desired position. NOTICE: The leakage oil fitting must be tightened with a tightening torque of 40 Nm. 2. Close non-required openings on the leakage oil fitting with screw plugs.

  • Page 49: Mounting The Position Measuring System/Proximity Switch Option

    Assembly | 5 5.4.5 Mounting the position measuring system/proximity switch option Position measuring system attachment M5x12 M5x12 12.9 12.9 10 Nm 10 Nm 1 Sensor holder 3 2x locking washer 2 Position measuring system FORTO-HT EN 49 / 80...
  • Page 50 5 | Assembly Proximity switch attachment M5x12 M5x12 12.9 12.9 10 Nm 10 Nm M5x12 12.9 10 Nm 1 2x locking washer 4 Limit switch rail 2 Limit switch rail 5 2x locking washer 3 Switch carrier 50 / 80 FORTO-HT EN...
  • Page 51 Assembly | 5 1 2x M12 proximity switch 2 4x M12 nut NOTICE: ▪ The clamping path of the cylinder with through-hole can be monitored either with two proximity switches or a position measuring system. ▪ To attach and adjust the proximity switches or the position measuring system, follow their operating manuals.

  • Page 52: Assembling Cylinder Flange Option

    5 | Assembly Procedure: 1. Depending on the option, attach sensor holder with position measuring system or switch carrier with limit switch rails and proximity switches with holding screws and locking washers to the cylinder with through- hole. NOTICE: The holding screws must be inserted and tightened with the stated tightening torque.
  • Page 53 Assembly | 5 1. Fix the cylinder flange to the machine spindle with the holding screws. NOTICE: Crosswise tighten the holding screws. NOTICE: The cylinder flange is produced on a customer-specific/machine-spe- cific basis. See the respective dimensional drawing for dimensions and screws to be used.

  • Page 54: Balancing The Hollow Clamping Cylinder Option

    5 | Assembly max. 0.01 mm 1 Machine spindle (example) 2 Contact surface on cylinder flange 3. Check axial run-out at the contact surface. 4. Assemble cylinder with through-hole on the cylinder flange. NOTICE: For the procedure, see chapter “Mounting the cylinder with through- hole at the machine spindle”.
  • Page 55 Assembly | 5 ▪ Balancing drillings already used and/or closed by Röhm may no longer be opened. ▪ Suitable screw plugs or threaded pins and balancing weights must be obtained by the manufacturer or the operator. ▪ The two tapped holes for transport purposes must not be used to bal- ance the cylinder with through-hole, only the balancing drillings intended for this purpose.
  • Page 56 5 | Assembly NOTICE: Tighten screw plugs or threaded pins with the tightening torque indicated. NOTICE: Secure screw plugs or threaded pins with screw locking. 56 / 80 FORTO-HT EN...

  • Page 57: Connect Media-Carrying Connections

    Assembly | 5 Connect media-carrying connections 5.5.1 Connecting hydraulic hoses NOTICE: ▪ In the delivered state of the cylinder with through-hole, hydraulic con- nections “A” and “B” are closed with screw plugs on one side and with blanking plugs on the opposite side. ▪...

  • Page 58: Connecting The Leakage Oil Hose

    6 | Commissioning 5.5.2 Connecting the leakage oil hose NOTICE: For specifications on installing and connecting the leakage oil hose, see chapter “Structural operating conditions”. Commissioning Filling the hollow clamping cylinder with hydraulic oil and venting out the air Pre-conditions: ▪...
  • Page 59 Commissioning | 6 Ventilating hydraulic connection “A” M6x10 9 Nm 1 Venting screw “A” 3 Hydraulic connection “B” (also opposite) 2 Piston housing 4 Hydraulic connection “A” (also opposite) NOTICE: Illustration without machine spindle, options and hydraulic lines 1. Turn the piston housing so that venting screw “A” is at the top. 2.
  • Page 60 6 | Commissioning Ventilating hydraulic connection “B” M6x10 9 Nm 1 Piston housing 3 Hydraulic connection “A” (also opposite) 2 Venting screw “B” 4 Hydraulic connection “B” (also opposite) NOTICE: Illustration without machine spindle, options and hydraulic lines 1. Turn the piston housing so that venting screw “B” is at the top. 2.

  • Page 61: Carrying Out A Functional Test

    Commissioning | 6 Carrying out a functional test Pre-conditions: ▪ Personnel qualification: Skilled worker ▪ Wear personal protective equipment ▪ Machine in “Setup mode” machine operation type ▪ Hydraulic oil at operating temperature ▪ Hydraulic pressure set to 8 bar ▪ Chuck is connected to the cylinder with through-hole and/or the draw tube option ▪...

  • Page 62: Configuring Clamping Path Monitoring

    6 | Commissioning 5. Make the cylinder with through-hole rotate with 5 min NOTICE: During the rotation, either hydraulic connection “A” or hydraulic con- nection “B” must be permanently pressurised. 6. Set the machine to “Production mode”. 7. Increase hydraulic pressure to max. 45 bar. 8.
  • Page 63 Commissioning | 6 Procedure: WARNING Danger of crushing in the movement range of the control disc between the control disc, the piston housing and the distrib- utor housing during configuration of the clamping path monit- oring. Ø Do not reach into the control disc movement range during con- figuration of the clamping path monitoring.

  • Page 64: Tightening Holding Screws

    6 | Commissioning Tightening holding screws Pre-conditions: ▪ Personnel qualification: Trained/instructed person ▪ Wear personal protective equipment ▪ The machine is switched off and protected against being switched on again Procedure: Assembly information for holding screws see following table Assembly information for holding screws FORTO FORTO FORTO...

  • Page 65: Operation

    Operation | 7 Operation Production mode DANGER Danger to life by being caught on or pulled into the rotating cylinder with through-hole. Ø Before operating the cylinder with through-hole, carry out a risk assessment/hazard assessment and implement measures derived from this for risk minimisation. Information on operating the cylinder with through-hole: ▪...

  • Page 66: Cleaning

    8 | Cleaning Cleaning Information for cleaning: ▪ It is preferable to use rags, cloths, fine brushes or brooms for cleaning. ▪ Alternatively, compressed air can be used for cleaning. In this case, a minimum distance of 30 cm must be maintained, with a maximum pres- sure of 6 bar.

  • Page 67: Cleaning The Coolant Drip Pan And Checking For Backlogs

    Cleaning | 8 Cleaning the coolant drip pan and checking for backlogs Procedure: NOTICE: If necessary, first remove the cover sheet option. 1. Clean the coolant drip pan internally; remove chips especially. 2. Check coolant drip pan and coolant discharge hose for backlogs. Re- move the backlogs if necessary.

  • Page 68: Maintenance

    9 | Maintenance Maintenance Maintenance work on the cylinder Interval (hours of operation or with through-hole after incident) Checking the cylinder with through- 2500 h or at least 1x per half-year hole for deformations, signs of wear, corrosion, leaks and loose parts (screws, components, plugs, op- tions) Check the non-return valves (con-...

  • Page 69: Checking The Non-Return Valves

    Maintenance | 9 Checking the non-return valves Pre-conditions: ▪ Personnel qualification: Skilled worker ▪ Wear personal protective equipment ▪ Machine in “Setup mode” machine operation type ▪ Cylinder with through-hole at operating temperature ▪ Hydraulic oil at operating temperature ▪ No workpiece or bars in the chuck or cylinder with through-hole ▪...
  • Page 70 9 | Maintenance WARNING Danger of crushing in the movement range of the control disc between the control disc, the piston housing and the distrib- utor housing during the inspection of the non-return valves. Ø Do not reach into the control disc movement range during the inspection of the non-return valves.
  • Page 71 Maintenance | 9 ▪ Alternatively, the cylinder with through-hole can be sent to RÖHM in or- der to replace the non-return valves. FORTO-HT EN 71 / 80...

  • Page 72: Storage

    10 | Storage Storage Pre-conditions: ▪ Personnel qualification: Trained/instructed person ▪ Wear personal protective equipment ▪ Cylinder with through-hole has been removed from the machine ▪ Hydraulic oil emptied ▪ Cylinder with through-hole is clean Procedure: ▪ Close hydraulic connections and leakage oil connection. ▪...

  • Page 73: Decommissioning And Disassembly

    Decommissioning and disassembly | 12 Decommissioning and disassembly Pre-conditions: ▪ Personnel qualification: Skilled worker ▪ Wear personal protective equipment ▪ Piston rod of the cylinder with through-hole is in rear end position ▪ No workpiece or bars in the chuck or cylinder with through-hole ▪...

  • Page 74: Disposal

    13 | Disposal 9. Screw venting screw “A” back in. 10. Repeat process with venting screw “B”. 11. Close the open hydraulic connections “A” and “B” with screw plugs or blanking plugs. 12. Turn piston housing so that tapped holes for transport purposes point upwards.

  • Page 75: Appendix

    Appendix | 14 Appendix 14.1 Test record Activity Interval Date Signature Tighten holding Once after an op- screws; for pro- erating time of cedure, see 80 h chapter “Tighten- ing holding screws” FORTO-HT EN 75 / 80...

  • Page 76: Declaration Of Incorporation

    14 | Appendix 14.2 Declaration of Incorporation 76 / 80 FORTO-HT EN...

  • Page 77: Notes

    Notes | 15 Notes FORTO-HT EN 77 / 80...
  • Page 78 15 | Notes 78 / 80 FORTO-HT EN...
  • Page 79 Notes | 15 FORTO-HT EN 79 / 80...
  • Page 80 15 | Notes 80 / 80 FORTO-HT EN...

This manual is also suitable for:

Forto-ht 46/103Forto-ht 52/130Forto-ht 67/150Forto-ht 77/170Forto-ht 86/200Forto-ht 95/225 ... Show all

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