SCHUNK ROTA-S plus, Assembly And Operating Manual

Page 1: ...Translation of the original manual Manual chuck ROTA S plus 2 0 with jaw lock Assembly and Operating Manual Superior Clamping and Gripping ...

Page 2: ...ly owned company the leading technology supplier of robots and production machines Our team is always available to answer any questions on this product and other solutions We look forward to your challenging questions We will find a solution Best regards Your SCHUNK team 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 ...

Page 3: ...ta 17 6 1 Chuck data 17 6 2 Clamping force RPM diagrams 18 6 3 Calculating the clamping force and RPM 22 6 3 1 Calculation of the required clamping force at a specified speed of rotation 22 6 3 2 Calculation example required initial clamping force Fsp0 for a given RPM n 24 6 3 3 Calculation of the permissible speed of rotation nperm in case of a given initial clamping force Fsp0 25 6 4 Accuracy cl...

Page 4: ...aintenance 35 9 1 Disassembling and assembling the chuck 35 9 2 Jaw change 37 9 3 At least once a month 37 9 4 In the case of decreasing clamping force or after about 200 operating hours 38 9 5 Maintenance intervals 38 10 Disposal 39 11 Spare parts 40 12 Assembly drawing 41 ...

Page 5: ... manual are intended to provide a basic understanding and may deviate from the actual version Besides this manual other documents which apply are those listed under 1 2 Page 6 Illustration of safety notes To make risks clear the following signal words and symbols are used for safety notes DANGER Danger to individuals Ignoring a safety note such as this will certainly lead to irreversible injury an...

Page 6: ... US Applicable documents General terms and conditions Catalog data sheet for purchased product Calculation of the jaw centrifugal forces in the chapter Technology of the lathe chuck catalog The documents indicated with an asterisk can be downloaded from schunk com 1 2 ...

Page 7: ...oduct includes compliance with all instructions in this manual The maximum speed and the necessary clamping force must be determined by the operator for each clamping task in accordance with the valid standards or technical specifications of the manufacturer Also see Calculation for clamping force and speed of rotation in chapter Technical data 6 Page 17 Inappropriate use The product is not being ...

Page 8: ...ing the lathe chuck must never be exceeded The lathe chuck may only be used on machines and facilities that fulfill the minimum requirements of the EC Machinery Directive specifically they must have effective technical measures to protect against possible mechanical hazards DANGER Risk of fatal injury to operating personnel from clothing or hair being caught on the lathe chuck and being dragged in...

Page 9: ...g environment is clean before starting assembly and installation work Wear suitable safety boots Follow the safety and accident prevention regulations when operating the chuck especially when working with machine tools and other technical equipment CAUTION Risk of limbs being crushed when opening and closing the chuck jaws during manual loading or unloading or when exchanging moving parts Do not r...

Page 10: ...huck base jaw CAUTION Hazard from vibration due to imbalanced rotating parts and noise generation Physical and mental strains due to imbalanced workpieces and noise during the machining process on the clamped and rotating workpiece Ensure the chuck s axial and concentric runout Check options for remedying imbalances on special top jaws and workpieces Reduce the RPM Wear hearing protection Notes on...

Page 11: ...tation a reliable speed limiter must be installed and proof must be provided that the speed limiter is effective WARNING Vibrations caused by machining can lead to a loss of clamping force Risk of injury due to loss of workpiece Manually actuated lathe chucks can lose clamping force due to the vibration caused by machining the workpiece Regularly adjust the lathe chuck during machining to compensa...

Page 12: ...eds clamping force losses must be accounted for due to the centrifugal force acting on the chuck jaws In this case the value of the operating clamping force should be measured dynamically Move the lathe chuck through to its end position several times after 500 clamping strokes at the latest This moves the lubricant back to the surfaces of the force transmission so that the clamping force is retain...

Page 13: ...oints at a greater distance lead to greater surface pressure in the jaw guidance and can significantly reduce the clamping force Do not use welded jaws If for constructional reasons the special chuck jaws are heavier than the top jaws assigned to the clamping device greater centrifugal forces must be accounted for when defining the required clamping force and the recommended speed Screw the jaw mo...

Page 14: ...fety instructions We recommend that the operator draw up in house safety operating instructions Trainees may work on machines and technical equipment in which a lathe chuck is installed provided that they are supervised at all times by qualified specialist personnel Organizational measures Obeying the rules Via suitable organizational measures and instructions the operator must ensure that the rel...

Page 15: ... Personal protective equipment Use of personal protective equipment Personal protective equipment serves to protect staff in the event of a danger that may interfere with their health or safety at work When working on and with the product observe the occupational health and safety regulations and wear the required personal protective equipment Observe the valid safety and accident prevention regul...

Page 16: ...for mounting screws for clamping the chuck screw quality 10 9 Screw size M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 Tightening torques MA Nm 13 28 50 88 120 160 200 290 400 500 1050 1500 Tightening torques to mount top jaws onto the chuck screw quality 12 9 Screws for base jaws SFG SFGK SFK V SFGL SFGX M6 M8 x 1 fine thread M1 0 M12 x 1 5 fine thread M16 x 1 5 fine thread M2 0 M2 4 maximum admi...

Page 17: ...pecifically determine this data Examples of calculation can be found in the Chuck jaws in special design technology chapter in our current chuck jaw catalog Max jaw eccentricity of center of gravity in axial direction amax mm The maximum RPM stated is only valid with the maximum clamping force and when using the hard standard stepped jaws that go with the chuck For soft top jaws or jaws in special...

Page 18: ...amping cycles Length of warranty 60 months Maximum clamping cycle number 50 000 cycles Clamping force RPM diagrams Clamping force RPM curves have been determined by using hard jaws In the determination process the maximum actuating force was applied and the jaws were set flush with the outer diameter of the chuck The chuck is in perfect condition and lubricated with SCHUNK LINOMAX plus special gre...

Page 19: ...00 0889002_ROTA S plus 2 0 with jaw lock en US 19 Clamping force RPM diagram ROTA S plus 2 0 160 42 3 jaws Clamping force RPM diagram ROTA S plus 2 0 200 62 3 jaws Clamping force RPM diagram ROTA S plus 2 0 250 52 3 jaws ...

Page 20: ...07 00 0889002_ROTA S plus 2 0 with jaw lock en US Clamping force RPM diagram ROTA S plus 2 0 315 92 3 jaws Clamping force RPM diagram ROTA S plus 2 0 160 42 2 jaws Clamping force RPM diagram ROTA S plus 2 0 200 62 2 jaws ...

Page 21: ...Technical data 07 00 0889002_ROTA S plus 2 0 with jaw lock en US 21 Clamping force RPM diagram ROTA S plus 2 0 250 52 2 jaws Clamping force RPM diagram ROTA S plus 2 0 315 92 2 jaws ...

Page 22: ...e workpiece via the jaws due to actuation of the lathe chuck during shutdown Under the influence of rotation the jaw mass generates an additional centrifugal force The centrifugal force reduces or increases the initial clamping force depending on whether clamping is from the outside inwards or from the inside outwards The sum of the initial clamping force Fsp0 and the total centrifugal force Fc is...

Page 23: ...derive the calculation of the initial clamping force during shutdown for clamping from the outside inwards for clamping from the inside outwards NOTICE This calculated force must not be larger than the maximum clamping force ΣS engraved on the chuck See also Chuck data table 6 1 Page 17 From the above formula it is evident that the sum of the effective clamping force Fsp and the total centrifugal ...

Page 24: ...que of the base jaws McGB and the centrifugal torque of the top jaws McAB need to be added The centrifugal torque of the base jaws McGB can be found in the table Chuck data 6 1 Page 17 The centrifugal torque of the top jaws McAB is calculated as per 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...

Page 25: ...pplies Centrifugal torque of base jaw and top jaw specified in Chuck data table For the centrifugal torque of the top jaw the following applies Centrifugal torque for one jaw The chuck has 3 jaws the total centrifugal torque is The total centrifugal force can now be calculated Initial clamping force during shutdown that was sought Calculation of the permissible speed of rotation nperm in case of a...

Page 26: ...5 RPM is smaller than the maximum permissible RPM of the chuck nmax 3200 RPM see Chuck data table 6 1 Page 17 This calculated RPM may be used Accuracy classes Tolerances for run out accuracy and axial run out accuracy correspond to the Technical Supply Terms for lathe chucks as per DIN ISO 3442 3 Permitted imbalance Rotating clamping stations without pallets and workpieces correspond to balancing ...

Page 27: ...gain while pressing the pressure bolt item 14 until the front side of the jaw is at the outer marking line The first tooth of the base jaw holds the locking slide item 13 in the lower position and the actuating lock for the respective jaw is released Proceed in this way for all three base jaws The numbered jaws must be inserted into the correspondingly numbered guides jaw 1 in guide 1 etc Finally ...

Page 28: ...langes for type A short taper Our technical sales would be glad to answer any questions you may have Assembly of the manual lathe chuck Before putting on the chuck on the spindle nose carefully clean the centering and contact surfaces of both parts and rub in some oil While the chuck is lightly pressed on there should be noticeable play in the taper and at most 0 02 mm play between the flat surfac...

Page 29: ...G If the indicator pin protrudes the entire serration of the wedge bars items 5 and 6 no longer engages into the base jaws The base jaws are not sufficiently engaged by the wedge bars Risk of injury from jaws and workpiece being flung out If the indicator pin protrudes do not clamp the chuck and do not start up Once the spindle item 8 has reached the stop press the pressure bolt item 14 under the ...

Page 30: ... inserted at least up to the marking line on the chuck body item 1 see Fig Jaw change All jaws have to be at the same marking line An additional actuating lock prevents the spindle from being turned to the right without chuck jaws NOTICE If force is used to continue turning the chuck will be damaged and the jaw lock function will no longer be active Do not forcefully turn the spindle further Only ...

Page 31: ...ing flung out If the indicator pin protrudes do not clamp the chuck and do not start up Important notes When working with a very short opening stroke or large series lubrication grease may be pressed out between the loaded surfaces of the chuck gear In this case efficiency will decrease Following a number of clampings activate the chuck several times without a workpiece inserted at full stroke so ...

Page 32: ...e difficult to move Clean the guides and jaws Subsequently delivered hard top jaws type SHF or unsplit hard jaws type STF must be ground in the chuck for run out accuracy For precise clamping do not remove the ground top jaws from the base jaws This will result in loss of run out accuracy Use a different set of jaws when changing the jaws When re equipping from cylindrical mounting to short taper ...

Page 33: ...be seen in the table below If the permissible radial and axial run out error see table is exceeded check the following points Applied wrench torque Md Correct mounting of the chuck Test pins and test disks deviate from the factory specification Table of the maximum permissible radial and axial run out error for the ROTA S plus 2 0 chuck with STF or SHF jaws Chuck size 160 42 200 52 250 62 315 92 J...

Page 34: ...Function 34 07 00 0889002_ROTA S plus 2 0 with jaw lock en US True running check ...

Page 35: ...act with the skin Wear protective gloves The chuck will have to be disassembled and cleaned at regular intervals according to its application Disassembling and assembling the chuck Disassembly When replacing spare parts or cleaning the chuck will have to be disassembled First remove the manual chuck from the lathe Note for the corresponding mountings For direct mounting in acc with DIN ISO 702 1 E...

Page 36: ...he O rings item 39 Remove the cylindrical pin item 30 Insert the assembly key item 99 using the spindle s hexagonal head item 8 and unscrew the spindle screw item 8 with the actuating key The spindle item 8 can now be completely screwed out of the wedge bar item 5 with the actuating key The pressure bolts item 14 are pre loaded by the springs item 31 After the cylindrical pins item 45 are driven o...

Page 37: ...ontrol area for the indicator pin item 17 must be noted If the drive ring item 3 is incorrectly mounted then the indicator pin item 17 is not pulled in during the actuation of the chuck Jaw change Clean and lubricate jaws if there is no film of grease At least once a month Lubricate the chuck at the two lubrication nipples item 37 on the circumference of the chuck body item 1 using a manual press ...

Page 38: ... and damage Replace damaged parts with original SCHUNK spare parts only Before installation lubricate all individual components with SCHUNK LINOMAX plus special grease This cleaning procedure should be performed about every 200 operating hours depending on the extent of stress on the chuck Maintenance intervals Lubricating the greasing areas Lubrication interval Demands every 25 hours normal use o...

Page 39: ...n out Collect the escaping liquids and dispose of them properly in line with the statutory provisions Remove any identifiable plastic or aluminum parts installed in or on the chuck and dispose of them properly in line with the statutory provisions Dispose of the chuck s metal parts as scrap metal Alternatively you can return the chuck to SCHUNK for proper disposal 10 ...

Page 40: ...thread 1 1 6 Wedge bar 2 1 7 Sliding block 3 2 8 Spindle 1 1 9 Spindle nut 1 1 10 Seat of bearing 1 1 11 Wiper starting for size 200 3 2 12 Slide 3 2 13 Locking slide 3 2 14 Pressure bolt 3 2 15 Traverse slide 3 2 17 Indicator pin 1 1 30 Cylindrical pin 1 1 31 Compression spring for pressure bolt 3 2 32 Compression spring for locking slide 3 2 33 Spring loaded pressure piece 3 2 34 Cylindrical scr...

Page 41: ...Assembly drawing 07 00 0889002_ROTA S plus 2 0 with jaw lock en US 41 Assembly drawing 12 ...