Related Manuals for SCHUNK ROTA THW3 200
Summary of Contents for SCHUNK ROTA THW3 200
- Page 1 Translation of Original Operating Manual Power Chuck ROTA THW3 Assembly and Operating Manual...
- Page 2 Imprint Imprint Copyright: This manual is protected by copyright. The author is SCHUNK GmbH & Co. KG. All rights reserved. Technical changes: We reserve the right to make alterations for the purpose of technical improvement. Document number: 1440828 Version: 06.00 | 15/11/2022 | en...
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Page 3: Table Of Contents
Table of Contents Table of Contents General........................ 5 About this manual .................... 5 1.1.1 Presentation of Warning Labels ............... 5 1.1.2 Applicable documents ................ 6 1.1.3 Sizes ...................... 6 Warranty ...................... 6 Scope of Delivery.................... 6 Basic safety notes .................... 7 Intended use...................... 7 Not intended use .................... - Page 4 Table of Contents Assembly ........................ 27 Installing and connecting.................. 27 Connection thread draw tube ................ 28 Checking the chuck mount ................. 29 Assembly ...................... 29 5.4.1 Chuck assembly (with cylindrical recess).......... 30 5.4.2 Assembly preparation for chuck with reduction or extension flange .. 33 Function ......................... 34 Function and handling ..................
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Page 5: General
General 1 General 1.1 About this manual This manual contains important information for a safe and appropriate use of the product. This manual is an integral part of the product and must be kept accessible for the personnel at all times. Before starting work, the personnel must have read and understood this operating manual. -
Page 6: Applicable Documents
The documents labeled with an asterisk (*) can be downloaded from schunk.com. 1.1.3 Sizes This operating manual applies to the following sizes: • ROTA THW3 200-52 • ROTA THW3 225-66 • ROTA THW3 265-81 • ROTA THW3 315-104 • ROTA THW3 400-128 •... -
Page 7: Basic Safety Notes
• Structural changes should only be made with the written approval of SCHUNK. 06.00 | ROTA THW3 | Power Chuck | en | 1440828... -
Page 8: Spare Parts
Use of unauthorized spare parts Using unauthorized spare parts can endanger personnel and damage the product or cause it to malfunction. • Use only original spare parts or spares authorized by SCHUNK. 2.5 Chuck jaws Requirements of the chuck jaws Accumulated energy can make the product unsafe and risk the danger of serious injuries and considerable material damage. -
Page 9: Environmental And Operating Conditions
Basic safety notes 2.6 Environmental and operating conditions Required ambient conditions and operating conditions Incorrect ambient and operating conditions can make the product unsafe, leading to the risk of serious injuries, considerable material damage and/or a significant reduction to the product's life span. •... -
Page 10: Personal Protective Equipment
Basic safety notes The following personal qualifications are necessary for the various activities related to the product: Trained electrician Due to their technical training, knowledge and experience, trained electricians are able to work on electrical systems, recognize and avoid possible dangers and know the relevant standards and regulations. -
Page 11: Notes On Safe Operation
Basic safety notes 2.9 Notes on safe operation Incorrect handling of the personnel Incorrect handling and assembly may impair the product's safety and cause serious injuries and considerable material damage. • Avoid any manner of working that may interfere with the function and operational safety of the product. -
Page 12: Disposal
Basic safety notes 2.12 Disposal Handling of disposal The incorrect handling of disposal may impair the product's safety and cause serious injuries as well as considerable material and environmental harm. • Follow local regulations on dispatching product components for recycling or proper disposal. 2.13 Fundamental dangers General •... -
Page 13: Protection During Commissioning And Operation
Basic safety notes 2.13.2 Protection during commissioning and operation Falling or violently ejected components Falling and violently ejected components can cause serious injuries and even death. • Take appropriate protective measures to secure the danger zone. • Never step into the danger zone during operation. 2.13.3 Protection against dangerous movements Unexpected movements Residual energy in the system may cause serious injuries while... - Page 14 Basic safety notes DANGER Risk of fatal injury to operating personnel due to the workpiece falling down or being flung out in the event of a power failure. In the event of a power failure, the lathe chuck's clamping force may fail immediately and the workpiece may be released in an uncontrolled manner.
- Page 15 Basic safety notes DANGER Possible risk of fatal injury to operating personnel from clothing or hair being caught on the lathe chuck and being dragged into the machine Loose clothing or long hair may become caught on projecting parts of the lathe chuck and be drawn into the machine. The machines and equipment must fulfill the minimum •...
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Page 16: Technical Data
Calculation examples can be found in the "Technology" chapter of the SCHUNK lathe chuck catalog. The maximum RPM stated is only valid with the maximum clamping force and when using the hard standard chuck jaws that go with the chuck. -
Page 17: Clamping Force-Rpm Diagrams
The chuck is in perfect condition and lubricated with SCHUNK LINOMAX plus special grease. If one or more of these prerequisites is modified, the graphs will no longer be valid. - Page 18 Technical data Clamping force/RPM diagram for ROTA THW3 200-52 Minimum required clamping force 33% Speed of rotation n [RPM] Clamping force/RPM diagram for ROTA THW3 225-66 Minimum required clamping force 33% Speed of rotation n [RPM] Clamping force/RPM diagram for ROTA THW3 265-81...
- Page 19 Technical data Clamping force/RPM diagram for ROTA THW3 315-104 Minimum required clamping force 33% Speed of rotation n [RPM] Clamping force/RPM diagram for ROTA THW3 400-128 Minimum required clamping force 33% Speed of rotation n [RPM] Clamping force/RPM diagram for ROTA THW3 500-165 Minimum required clamping force 33% Speed of rotation n [RPM]...
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Page 20: Calculations For Clamping Force And Speed
Technical data Clamping force/RPM diagram for ROTA THW3 630-165 Minimum required clamping force 33% Speed of rotation n [RPM] 3.3 Calculations for clamping force and speed Missing information or specifications can be requested from the manufacturer. Legend Total centrifugal force [N] Centrifugal torque of top jaws [Kgm] Effective clamping force [N] Centrifugal torque of base jaws [Kgm]... - Page 21 Technical data DANGER Risk to life and limb of the operating personnel and significant property damage when the RPM limit is exceeded! With gripping from the outside inwards, and with increasing RPM, the effective clamping force is reduced by the magnitude of the increasing centrifugal force (the forces are opposed).
- Page 22 Technical data NOTICE This calculated force must not be larger than the maximum clamping force ΣS engraved on the chuck. } 3.1 [ / 16] See also "Chuck data" table From the above formula it is evident that the sum of the effective clamping force F and the total centrifugal force F is multiplied by...
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Page 23: Calculation Example: Required Initial Clamping Force Fsp0 For A Given Rpm N
Technical data 3.3.2 Calculation example: Required initial clamping force Fsp0 for a given rpm n The following data is known for the machining job: • Gripping from the outside in (application-specific) • Machining force F = 3000 N (application-specific) • max. speed of rotation n = 3200 ("Chuck data"... -
Page 24: Calculation Of The Permissible Rpm Nzul In Case Of A Given Initial Clamping Force Fsp0
Technical data 3.3.3 Calculation of the permissible rpm nzul in case of a given initial clamping force Fsp0 The following formula can be used to calculate the permissible RPM for a given initial clamping force during shutdown: NOTICE The calculated permissible RPM may not exceed the maximum RPM inscribed on the chuck for safety reasons! Example of calculation: Permissible RPM for a given effective clamping force... -
Page 25: Grades Of Accuracy
Technical data 3.4 Grades of Accuracy Tolerances for radial and axial run-out accuracy correspond to the Technical Supply Terms for lathe chucks as per DIN ISO 3442-2. 3.5 Permissible imbalance The ROTA THW3 in ungreased state without top jaws corresponds to the balancing quality class 6.3 (according to DIN ISO 21940-11). -
Page 26: Torques Per Screw
Torques per screw 4 Torques per screw Tightening torques for mounting screws used to clamp the chuck on lathes or other suitable technical equipment (screw quality 10.9) Screw size M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 7/16 1/2"... -
Page 27: Assembly
Assembly 5 Assembly 5.1 Installing and connecting WARNING Risk of injury due to unexpected movements! If the power supply is switched on or residual energy remains in the system, components can move unexpectedly and cause serious injuries. Before starting any work on the product: Switch off the power •... -
Page 28: Connection Thread Draw Tube
If they cannot be attached directly to the draw tube, an adapter must be used. O-ring ROTA THW3 200-52 M64 1.5 13.0 62.0 62 x 1.5 ROTA THW3 225-66 M78 x 1.5 13.0 76.0... -
Page 29: Checking The Chuck Mount
Assembly 5.3 Checking the chuck mount The machine side must be aligned prior to the flange being installed in order to achieve high run-out accuracy of the chuck. To do this, check the contact surfaces on the spindle for axial and radial run-out accuracy using a dial indicator. - Page 30 Assembly 5.4.1 Chuck assembly (with cylindrical recess) NOTE If the mount of the machine spindle and the lathe chuck are identical, chuck assembly takes place without assembly preparation. If the mount of the machine spindle differs from that of the lathe chuck, a connecting flange must be affixed before the chuck is assembled.
- Page 31 Assembly NOTICE Due to the seal, an air cushion can form in the chuck, which prevents the piston from remaining in the forward position. This can be remedied by venting the chuck} 7.1 [ / 37] NOTICE Due to the seal, an air cushion can form in the chuck, which can disrupt the jaw change mechanism.
- Page 32 Assembly Chucks in size 265 or above • Offset the base jaws (item 22) up to the outermost marking of the chuck face. • Lift the chuck to in front of the spindle lug using an eye bolt flush to the center of the spindle. •...
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Page 33: Assembly Preparation For Chuck With Reduction Or Extension Flange
Assembly 5.4.2 Assembly preparation for chuck with reduction or extension flange If the bolt pitch circle of the machine spindle does not correspond to the bolt pitch circle of the lathe chuck, a reduction or expansion adapter plate must be used. •... -
Page 34: Function
Function 6 Function 6.1 Function and handling The lathe chucks of type ROTA THW3 are actuated using rotating closed-center or open-center hydraulic cylinders or via a static hydraulic cylinder. The axial tensile and pressure forces are converted to the radial jaw clamping force by the wedge angle in the pistons and thrust jaw. -
Page 35: Base Jaw Position
Function NOTICE The jaw change key must be inserted into the chuck as far as the stop before turning to the "change" position. Twisting too soon will lead to a malfunction of the jaw change mechanism. NOTICE Only adjust the chuck from the "change" to the "lock" position with the jaw correctly inserted. -
Page 36: Functional Testing
Function NOTICE Make sure that the workpiece is clamped halfway up the base jaw stroke. The workpiece must not be clamped at the end of the base jaw stroke. This can lead to the workpiece becoming loose. 6.4 Functional testing Functional test After installation of the chuck, its function must be checked prior to start-up. -
Page 37: Maintenance
Maintenance 7 Maintenance 7.1 Lubrication Greasing areas To maintain the safe function and high quality of the lathe chuck, it must be regularly lubricated at the lubrication nipple (item 73) in the chuck body with LINOMAX plus. 1. Lubrication is only possible in the chuck position "open"; for this purpose, move the piston to its front end position. -
Page 38: Technical Condition
} 7.2 [ / "Maintenance intervals" 38]). Only perform the clamping force test with a calibrated clamping force tester (SCHUNK IFT). 7.2 Technical condition With the smallest possible actuating pressure (hydraulic cylinder), the base jaws should move evenly. This method only provides a limited indication and is not a substitute for measuring the clamping force. -
Page 39: Maintenance Intervals
Maintenance Checking correct functioning upon jaw change The mechanics of the jaw change notching/serrations must be checked at regular intervals; at the latest at the specified maintenance intervals. To do this, insert the jaw change key (item 20) into the eccentric bolt (item 4), and turn anti-clockwise to "change"... -
Page 40: Disassembling And Assembling The Chuck
Maintenance 7.4 Disassembling and assembling the chuck The item numbers specified for the corresponding individual components relate to chapter drawings.} 9 [ / 46] The lathe chuck can only be disassembled once it has been } 5 [ / 27] removed. Before mounting the lathe chuck, the thrust jaws (item 2) and the mount (item 7) must be pre-assembled. - Page 41 Maintenance Remove the piston (item 3), pre-assembled thrust jaws (item 2) and guide ring (item 5) in the package, and then dismantle the individual components. Remove the O-rings (item 50 / item 44) from the grooves. Assembly: Pre-position the wiper (item 10) flush with the chuck body (item 1) so that it can be joined with the thrust jaw.
- Page 42 Maintenance Pre-assembly of thrust jaw Push the monitoring pin (item 8) on the flat surface or the thrust jaw (item 2) to release the driver (item 6). Pull the driver downwards out of the thrust jaw. Remove the compression spring (item 70) and cylindrical pin (item 67) from the bore hole in the thrust jaw.
- Page 43 Assembly: Push the eccentric bolt (item 4) completely into the bore hole and put in the "lock" position. Only use original SCHUNK spare parts when replacing damaged parts. The chuck is assembled in the same way, but in reverse order.
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Page 44: Spare Parts
Spare parts 8 Spare parts When ordering spare parts, it imperative to state the type, size, and above all the serial number of the chuck. Seals, sealing elements, fittings, springs, bearings, screws, wipers and parts that come into contact with the workpiece are not covered by the warranty. - Page 45 Spare parts Item Designation Quantity Screw seal O-ring Pressure piece Safety ring Washer Compression spring Compression spring Cylindrical pin Cylindrical pin Cylindrical pin Ball Cylindrical pin Compression spring Cylindrical pin Air bleed screw Lubrication nipples Emblem Compression spring 06.00 | ROTA THW3 | Power Chuck | en | 1440828...
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Page 46: Drawing
Drawing 9 Drawing Full chuck Accessories: 06.00 | ROTA THW3 | Power Chuck | en | 1440828... - Page 47 Drawing Thrust jaw 06.00 | ROTA THW3 | Power Chuck | en | 1440828...
- Page 48 Drawing Mount 06.00 | ROTA THW3 | Power Chuck | en | 1440828...
- Page 49 Drawing Thread lock with Klemm-tight 06.00 | ROTA THW3 | Power Chuck | en | 1440828...
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Page 50: Declaration Of Incorporation
Product designation: Power lathe chuck with through-hole and jaw quick-change Type designation: ROTA THW3 200-52; 225-66; 265-81; 315-104; 400-128; 500-165; 630-165 ID number 1366679, 1366680, 1366681, 1366682, 1366706, 1366707, 1366708, 1366710, 1366711, 1366712, 1366713, 1366715,... -
Page 51: Appendix On Declaration Of Incorporation, As Per 2006/42/Ec, Annex Ii, No. 1 B
I, that apply to and are fulfilled for the scope of the incomplete machine: Product designation Wedge hook, power lathe chuck with through-hole Type designation ROTA THW3 200-52; 225-66; 265-81; 315-104 ID number 1366679, 1366680, 1366681, 1366682, 1366706, 1366707, 1366708,... - Page 52 Appendix on Declaration of Incorporation, as per 2006/42/EC, Annex II, No. 1 B Protection against mechanical hazards 1.3.5 Risks related to combined machinery 1.3.6 Risks related to variations in operating conditions 1.3.7 Risks related to moving parts 1.3.8 Choice of protection against risks arising from moving parts 1.3.8.1 Moving transmission parts 1.3.8.2 Moving parts involved in the process 1.3.9...
- Page 53 Appendix on Declaration of Incorporation, as per 2006/42/EC, Annex II, No. 1 B Information 1.7.1 Information and warnings on the machinery 1.7.1.1 Information and information devices 1.7.1.2 Warning devices 1.7.2 Warning of residual risks 1.7.3 Marking of machinery 1.7.4 Instructions 1.7.4.1 General principles for the drafting of instructions 1.7.4.2 Contents of the instructions 1.7.4.3 Sales literature...
- Page 56 Translation of Original Operating Manual H.-D. SCHUNK GmbH & Co. Spanntechnik KG Lothringer Str. 23 D-88512 Mengen Tel. +49–7572-7614-0 Fax +49-7572-7614-1099 info@de.schunk.com schunk.com Folgen Sie uns I Follow us...