SCHUNK ROTA-S plus 2.0, Assembly And Operating Manual

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

Page 2: ...tions for the purpose of technical improvement Document number 0889002 Version 05 28 03 2019 en H D SCHUNK GmbH Co All rights reserved Dear Customer thank you for trusting our products and our family 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 Ask us questions and challenge ...

Page 3: ... data 17 6 1 Chuck data 17 6 2 Clamping force speed diagrams 18 6 3 Calculations for clamping force and speed 22 6 3 1 Calculation of the required clamping force in case of a given rpm 22 6 3 2 Calculation example Required initial clamping force Fsp0 for a given rpm n 24 6 3 3 Calculation of the permissible rpm nzul in case of a given initial clamping force Fsp0 26 6 4 Grades of Accuracy 26 6 5 Pe...

Page 4: ...e 34 9 1 Disassembling and assembling the chuck 34 9 2 Jaw change 36 9 3 At least once a month 36 9 4 In the case of decreasing clamping force or after approx 200 operating hours 37 9 5 Maintenance intervals 37 10 Disposal 38 11 Spare parts 39 12 Assembly drawing 40 ...

Page 5: ...ual Illustrations in this manual are provided for basic understanding and may differ from the actual product design In addition to these instructions the documents listed under 1 2 Page 6 are applicable Presentation of Warning Labels To make risks clear the following signal words and symbols are used for safety notes DANGER Danger for persons Non observance will inevitably cause irreversible injur...

Page 6: ...cable documents General terms of business Catalog data sheet of the purchased product Calculation of the jaw centrifugal forces Technology chapter in the lathe chuck catalog The documents marked with an asterisk can be downloaded on our homepage schunk com 1 2 ...

Page 7: ... Appropriate use of the product includes compliance with all instructions in this manual The maximum RPM of the chuck and the required clamping force must be determined by the user for the respective clamping task based on the applicable standards and technical specifications of the manufacturer See also Calculations for clamping force and RPM in the chapter Technical data 6 Page 17 Not intended u...

Page 8: ...e 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 Possible risk of fatal injury to operating personnel from clothing or hair being caught on the lathe chuck and being dragged...

Page 9: ... clean before starting assembly and installation work Wear suitable safety shoes Follow the safety and accident prevention regulations when operating the chuck especially when working with machine tools and other technical equipment CAUTION Danger of limbs being crushed by opening and closing of the chuck jaws during manual loading and unloading or when replacing moving parts Do not reach between ...

Page 10: ... 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 speed Wear hearing protection Notes on safe operation Do not sta...

Page 11: ... injury due drop out of the workpiece Manually operated chucks can lose clamping force because of vibration which is caused by the processing of the workpiece Tighten the chuck regularly during processing to compensate the loss of clamping force due to vibration Maintenance instructions The manual chuck s reliability and safety can only be guaranteed if the operator complies with the manufacturer ...

Page 12: ... 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 force transmission surfaces so that the clamping force is retained for longer Safety notes for servicing Follow all the applicable legal standards for health and safety during serv...

Page 13: ...s 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 mounti...

Page 14: ...technical equipment in which a chuck is mounted only if they are under the constant guidance and supervision of qualified specialists Organizational measures Obeying the rules Via suitable organizational measures and instructions the operator must ensure that the relevant safety rules are obeyed by the persons asked to operate maintain and repair the chuck Checking the behavior of personnel The op...

Page 15: ...r 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 regulations Wear protective gloves to guard against sharp edges and corners or rough surfaces Wear heat resistant protective gloves when handling hot surfaces Wear protective glove...

Page 16: ...torque for fastening screws to mount the lathe chuck screw grade 10 9 Screw size M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 Admissible torque MA Nm 13 28 50 88 120 160 200 290 400 500 1050 1500 Maximum admissible torque per screw for mounting top jaws onto the lathe chuck screw grade 12 9 Screw size M8 M10 M12 M16 M20 M24 Tightening torque Nm 25 60 80 100 180 230 Scope of delivery 1 Manual chuc...

Page 17: ...k jaws 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 special chuck jaws the speed permitted for the cutting task must be calculated in accordance with VDI 3106 whereb...

Page 18: ...s Clamping force speed 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 grease If one or more of these prerequisites is modified the graphs will no longer be ...

Page 19: ...data 05 00 0889002_ROTA S plus 2 0 en 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: ...data 20 05 00 0889002_ROTA S plus 2 0 en 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 05 00 0889002_ROTA S plus 2 0 en 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: ...huck jaw set kg sz Safety factor for machining Mc Centrifugal force torque Kgm Σs Max clamping force of chuck N Calculation of the required clamping force in case of a given rpm The initial clamping force Fsp0 is the total force impacting radially on the workpiece via the jaws due to actuation of the lathe chuck during shutdown Under the influence of rotation the jaw mass generates an additional c...

Page 23: ...the workpiece is released spontaneously Do not exceed the calculated RPM Do not fall below the necessary minimum clamping force Reduction in effective clamping force by the magnitude of the total centrifugal force for gripping from the outside inwards The required effective clamping force for machining Fsp is calculated from the product of the machining force FspZ and the safety factor Sz This fac...

Page 24: ...67 of the initial clamping force The formula for the calculation of the total centrifugal force Fc is For this n is the given speed of rotation in RPM The product mB rs is referred to as the centrifugal force torque Mc In case of toolholders with split chuck jaws i e with base jaws and top jaws for which the base jaws change their radial position only by the stroke amount the centrifugal torque of...

Page 25: ...ews and T nuts are not taken into account First the required effective clamping force Fsp is calculated using the machining force stated Initial clamping force during shutdown Calculation of total centrifugal force For two part chuck jaws the following applies Centrifugal torque of base jaw and top jaw specified in Chuck data table For the centrifugal torque of the top jaw the following applies Ce...

Page 26: ...ning force for machining job Fspz 3000 N application specific Total centrifugal torque of all jaws Mc 2 668 kgm Safety factor Sz 1 5 according to VDI 3106 Safety factor Ssp 1 5 according to VDI 3106 NOTE Masses of the jaw mounting screws and T nuts are not taken into account Identifying the permissible RPM The calculated RPM nzul 1495 rpm is smaller than the maximum permissible RPM of the chuck nm...

Page 27: ...r 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 3 base jaws The numbered jaws have to be pushed into the correspondingly numbered guidance jaw 1 into guidance 1 etc Finally turn the spindel several times to the right and to the left until it bottoms out Prepari...

Page 28: ...s you may have Mounting of the Manual Chuck Thoroughly clean the centering and the bearing surfaces of both parts and lubrify them with oil before placing the chuck onto the spindle head When the chuck is slightly pressed there should be a noticeable play and between the faces there should be a gap of max 0 02 mm feeler gauge NOTICE Danger of damage of the thrust bolt item 14 when setting down the...

Page 29: ... 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 base jaw The corresponding jaw is released and can now be adjusted or exchanged NOTICE If the pressure bolt ...

Page 30: ... 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 after all the clamping jaws have been inserted into the guide will the actuating lock be unlocked Then the w...

Page 31: ... stroke so that the grease can be distributed evenly again on the sliding areas on the inside of the chuck The chuck will then attain its full clamping force again Never remove the base jaws without actuating the thrust bolt item 14 Tighten the chuck regularly during processing to compensate the loss of clamping force due to vibration Following a longer period of shutdown more than 8 hours always ...

Page 32: ...me twisted Control of true running For delivery of a ROTA S plus 2 0 with hard jaws STF SHF grounded on the chuck For control of true running and face play hardened and ground inspection arbors or inspection disks are clamped see illustration Control of true running The torque Md at the key during tensioning of the inspection arbors and inspection disks corresponds to ca 67 to the max chuck operat...

Page 33: ...STF 250 STF 315 SHF 160 SHF 200 SHF 250 SHF 315 Md Nm 40 70 80 90 L mm 60 80 80 120 d STF mm Ø 34 Ø 41 Ø 41 Ø 55 d SHF mm Ø 34 Ø 41 Ø 41 Ø 55 TR1 max mm 0 03 0 03 0 03 0 04 D STF mm Ø 140 Ø 160 Ø 210 Ø 243 D SHF mm Ø 140 Ø 140 Ø 210 Ø 243 B mm 20 25 25 35 TP1 max mm 0 02 0 02 0 02 0 03 Control of true running ...

Page 34: ...pplication 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 the direct mounting in acc with DIN ISO 702 1 Evenly loosen the mounting screws item 35 and remove the chuck from the spindle For the direct mounting in acc with DIN ISO 702 ...

Page 35: ...ation key The spindle item 8 can now be completely screwed out of the wedge bar item 5 with the actuation key The pressure bolts item 14 are pre loaded by the springs item 31 After the cylindrical pins item 45 are driven out of the chuck body with a suitable sliding hammer the springs item 31 and the pressure bolts item 14 can be removed Carefully remove the wedge bars items 5 and 6 from the chuck...

Page 36: ...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 Use SCHUNK LINOMAX plus special grease as lubricant The chuck must be in fully ...

Page 37: ...place 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 Lubrication of the grease areas Lubrication interval Strain every 25 hours normal coolant utilization...

Page 38: ...llect 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 39: ...thread 1 1 6 Wedge bar 2 1 7 Sliding block 3 2 8 Spindle 1 1 9 Spindle nut 1 1 10 Bearing seat 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 screw ...

Page 40: ...Assembly drawing 40 05 00 0889002_ROTA S plus 2 0 en Assembly drawing 12 ...