Precision. Quality. Reliability. RollerDrive CNCTM. The Zero-Backlash CNC Rotary Table

Transcription

1 UTOMTION Precision. Quality. Reliability. RollerDrive NTM The Zero-acklash N Rotary Table

2 RollerDrive NTM The Zero-acklash N Rotary Table RollerDrive N The answer for a N rotary axis Pure Motion y Zero-acklash Technology TM The RollerDrive N, a N rotary table, is designed to fulfill the demands of the latest machine tools for increased speed and precision. Inside, the RollerDrive N uses a RollerDrive, our zero-backlash reducer which transmits motion without distortions while staying robust against external forces unlike existing gears and torque motors. The high precision and rigidity achieved by the zero-backlash technology gives the RollerDrive N a rotational accuracy of less than ± arc sec. and repeatability of less than ± arc sec., and remains robust while doing heavy cutting work on hard metals. No lamp Operation The RollerDrive N does not require a clamp operation due to its mechanically rigid zero-backlash structure. This eliminates clamp and unclamp time and requires no energy like conventional hydraulic/air systems. ombined, the distortion-free performance and no-clamp design delivers ultra fast positioning that leads to higher productivity. For instance, a typical 90-degree rotation can be done within 0. seconds. Perpetual Precision The unique mechanism of the RollerDrive makes the RollerDrive N capable of withstanding years of operation without internal part wear or loss of precision. Regular calibration or readjustment work is unnecessary for the RollerDrive N. ctual motion with distortion prone drives RollerDrive motion Displacement Displacement Time Time

3 RollerDrive NTM Overview Mechanism Performance y Zero-acklash Technology The main part of the RollerDrive mechanism consists of an input shaft and an output turret in which roller followers are embedded. n integral cross-roller bearing supports the output turret with minimal run out. Preloaded roller followers contact the input rib surfaces with a wedge-shaped cross section, which can be adjusted by moving the input axis, to eliminate backlash completely. No backlash means superior precision and stiffness for both W and W rotation, as shown on the diagram to the right. ven with preload and zero-backlash, the needle-bearing type roller followers transmit power by rolling rather than sliding making it possible for the RollerDrive to achieve an outstanding efficiency of 90% or more and life-time wear-free durability. ll parts are made from only qualified alloy steels, and machined and ground with our ultra-precision machining system. rror rror RollerDrive N Output angle Typical worm gear rotary table W W W W Output angle TM pproved Performance e Distinctive RollerDrive product series are widely used in various industries that require the highest in performance levels. Machine tool companies are not an exception and RollerDrive technology is already being applied to the world s leading machine tools. The RollerDrive QULITY logo encompasses rotary axis speed, precision, and mechanical stiffness - essential performance qualities for standing up to heavy cutting work. This logo is available to RollerDrive users to make their applications distinctive in their market. ontact Sankyo utomation for details on the use of this logo. by Sankyo utomation 3

4 Overview xclusive Zero acklash Structure Turret (output) Preload Mechanism Internal onstruction of the Roller Follower Needles Stud Roller followers Roller gear cam (input) Outer raceway Roller gear cam surface Features No backlash Power transferred by rolling contact eliminates wear High accuracy and good efficiency Preloadable for high rigidity Rolling contact Preload Low Maintenance and xcellent Price Performance onsistent long-term accuracy without need for backlash adjustment. ost omparison Versus Worm Gear Rotary Table Offers Long-term Use Low Maintenance Positioning ccuracy ging Test Initial ost versus nnual Maintenance osts arc sec High Positioning rror Low 0 Drop in accuracy over time Worm gear rotary table (example) RollerDrive Maintenance Requires maintenance at regular intervals 0 1 Million Million 3 Million Million Million onsistent long-term Operating cycles accuracy without maintenance. The RollerDrive graph is based on internal testing. Maintenance $,000 $,000 0 Worm gear rotary table Roller drive ost becomes less than the worm gear table in three years. Worm gear rotary tables require maintenance twice a year. ssumes an annual running cost of 3% (oil changes, etc.) for both types Year ost simulations are based on a table diameter of about 0 mm. Worm gear models ccuracy declines over time. Requires maintenance to achieve initial accuracy. The RollerDrive ccuracy is consistent with no maintenance even after million operation cycles. (Requires regular oil changes) Worm gear models Maintenance costs occur once or twice a year to adjust the backlash. RollerDrive Long-term use is possible without any mechanical maintenance. eats the cost of a worm gear even after adding annual running costs to the initial investment cost. Price performance continues thereafter. ased on internal calculations.

5 Overview Servo Motor Preload + Rolling contact achieves zero-backlash and long life Outstanding rotating accuracy and rigidity with the integrated cross roller bearing Shock resistant, high-performance cam followers

6 Model Line Up & pplications pplications utting tool grinding: Higher accuracy by Zero-backlash movement utomotive parts Improving productivity by high rotational speed Molding parts: High speed & accurate continuous cutting Turbine blade: High acceleration processing Medical parts: ompact axis

7 Model Line Up & pplications Model Line Up R Robust, Versatile -xis Table Spec. P HORIZONTL VRTIL φ170 TL φ0 TL φ0 TL φ3 TL φ00 TL RS ompact, High Speed -xis Table Spec. P VRTIL TL φ170 TL φ0 TL φ TL RT ompact, High Speed -xis Tilting Table Spec. P1 TILTING φ0 TL TL φ TL uxiliary quipment Spec. P-1 SUPPORT TL TIL STOK ROTRY JOINT 7

8 R Specifications Robust, Versatile -xis Table Rseries R series tables offer robustness with the versatility to be mounted and used vertically or horizontally. Options include internal or external rotary joints and hydraulic clamping. Features est In-lass ccuracy Robust Design High Speed Rotation Specifications R170 R0 Table diameter mm φ170 φ0 Table reference bore diameter enter height Gear ratio Maximum table speed 1, mm mm φ H7 0 φ7 H7 1 1/0 1/0 rpm 7 7 Indexing accuracy arc.sec ± ± Repeatability arc.sec Net weight kg 70 R0 φ0 φ1 H7 1/0 7 ± 170 R3 φ3 φ1 H7 1/0 0 ± 0 R00 φ00 φ0 H7 0 1/0 0 ± Loading haracteristics llowable payload llowable load llowable inertia moment Upright position Horizontal position llowable axial load ontinuous holding torque Maximum output torque llowable bending moment kg kg N Nm Nm Nm kgm R R R Depends on which motor is mounted. R R * These specifications are for reference purposes only, please contact Sankyo for detailed specifications. ontact Sankyo if you wish to use a different motor. Maximum output torque should not exceed seconds or % duty cycle. Model ode 1 Options Hydraulic clamper torque (N m/mpa) xternal rotary joint (number of ports) R0 1 Model R170 R0 R0 R3 R00 uilt-in rotary joint (number of ports) - Output rotary encoder L 1 - Servo motor mounting side R L 3 3 Servo Motor X R RON/RN0 (HIDNHIN) onnector S 1 See Dimensions diagrams R RON/RN0 (HIDNHIN) 7 Option Table ncoder Hydraulic lamp Rotary joint R RON/RN0 (HIDNHIN) 7 R3 +1 RON/RN0 (HIDNHIN) J J (uilt-in) H (xternal) R RON/RN0 (HIDNHIN). Servo motor mounting side 3. Servo Motor. onnector Manufacture FNU R MITSUISHI S SNYO D L X sk Sankyo for mounting other motors

9 R Dimensions R170 1 φ0 0 3 M, 1DP M, 1DP ir purge outlet (Reverse side) φ170 onnector code S onnector code Table center bore φ φh7 17 M, DP φ φh φ R0 1 7 onnector code S onnector code Table center bore φ M, DP 1 ir purge outlet (Reverse side) M, DP M, 1DP φ0 φ0 19 φ7h7 φ7 3 φ7h φ R onnector code S onnector code Table center bore φ0 M, DP ir purge outlet (Reverse side) φ0 φ0 1 φ1h7 3 1 φ1 1 M, 1DP φ1h φ13 R onnector code S onnector code Table center bore 3 3 φ M, 1DP 0 37 ir purge outlet (Reverse side) φ3 φ3 φ1h7 39 φ1 φ1h φ10 M1, DP R00 79 onnector code S onnector code Table center bore φ ir purge outlet (Reverse side) φ φ00 0 φ0h M, DP φ1 φ0h φ M1, 3DP

10 RS Specifications ompact -xis Table RSseries RS Series tables offer a combination of compactness with high torque. Used for many applications from small tapping centers to machining centers. Features Oversized bore Low profile; compact size High-speed rotation Specifications Table diameter Table reference bore diameter enter height Gear ratio Maximum table speed Indexing accuracy Repeatability Net. weight mm mm mm rpm arc.sec arc.sec kg RS φ0 H7 1 1/0 7 ± 3 RS170 φ170 φ0 H7 1 1/0 7 ± RS0 φ0 H7 1 1/0 7 ± RS φ φ1 H7 13 1/90 ± 7 Loading characteristics llowable payload llowable load Upright position llowable axial load ontinuous holding torque * Maximum holding torque llowable bending moment kg N Nm Nm Nm RS RS RS RS Maximum moment of inertia kgm * These specifications are for reference purposes only, please contact Sankyo for detailed specifications. Maximum output torque should not exceed seconds or % duty cycle. Options RS RS170 RS0 RS uilt-in rotary joint (number of ports) Output rotary encoder MPI-3(MPRZ-3) (MITSUISHI) MPI-3(MPRZ-3) (MITSUISHI) MPI-3(MPRZ-3) (MITSUISHI) MPI-3(MPRZ-3) (MITSUISHI) Model ode 1 RS170 1 Model 3 - L S - Servo Motor 3 Motor mounting side onnector ncoder Rotary joint (built-in) J Option RS RS170 RS0 RS D X R L S * If the unit is mounted with an encoder, hydraulic clamp, or rotary joint, the hollow bore table is not available. J Servo Motor Motor mounting side onnector Manufacture FNU MITSUISHI R S YSKW D SNYO L X

11 RS Dimensions 11 RS RS170 RS0 RS M, 1DP M, 1DP M, 1DP φ M1, DP 10 0 φ 7 13 φ φ0 φ H7 1H7 1H7 1H7 φ1h7 φ1 1H7 φ3h φ φ0h φ7 φ70 φ0h7 φ1h7 φ1 φ11h

12 RT Specifications ompact -xis Tilting Rotary Table RT Series tables are perfect for contouring due to zero-backlash technology. The open-end design coupled with speed and accuracy is suited for many applications from tapping centers to machining centers. RT series Features Unique open-end design for small footprint High-speed rotation Specifications Tilting angle deg RT00-1 RT -1 RT -1 Table diameter mm φ0 φ Table reference bore diameter mm φ H7 φ0 H7 φ70 H7 Table surface height at 90 degree mm enter height at 90 degree Gear ratio Maximum speed Indexing accuracy Repeatability Net. weight Rotary axis Tilt axis Rotary axis Tilt axis Rotary axis Tilt axis Rotary axis Tilt axis mm rpm arc.sec arc.sec kg 1 1/ 1/0 3 0 ± ± / 1/0 (1/90) 7 () ± ± / 1/7 0 ± ± Loading characteristics RT00 RT RT llowable payload kg 0 llowable axial load N llowable load ontinuous holding torque Maximum output torque Nm Nm llowable bending moment Nm llowable inertia moment kgm Model ode 1 Options uilt-in rotary joint (number of ports) RT 1 Model Output rotary encoder 3 - L S - Servo Motor * These specifications are for reference purposes only, please contact Sankyo for detailed specifications. Maximum output torque should not exceed seconds or % duty cycle. 3 Motor mounting side RT00 RT/RT Rotary axis MPI-3(MPRZ-3) (MITSUISHI) onnector ncoder Rotary joint (built-in) J Option Tilt axis MPI-73(MPRZ-73) (MITSUISHI) RT00 RT RT D X R L S J * If the unit is mounted with an encoder, hydraulic clamp, or rotary joint, the hollow bore table is not available. Servo Motor Motor mounting side onnector Manufacture FNU MITSUISHI R S YSKW D SNYO L X sk Sankyo for mounting other motors 1

13 RT Dimensions RT00 RT Max workpiece dia. mm Max workpiece dia.170 mm φh7 φ7 φ M, DP R9. 0 φ0h7 φ1 φ0h φ φ R0 11. M, 1DP 1 φ H7 1H7 RT Max workpiece dia. mm RT 13

14 Product Specifications Top Motor Mount N Rotary Table Support Table DX TS φ 3 φ Specifications DX TS0 Table diameter mm φ φ enter height mm 0 0 Gear ratio 1/0 Maximum table speed min Indexing accuracy arc.sec ± Repeatability arc.sec Net. weight kg llowable payload kg 0 llowable inertia moment kgm. Hydraulic clamper Nm uilt-in rotary joint (# of ports) Output rotary encoder MPRZ-73 *1. The allowable payload assumes the use of support TS0. 1

15 uxiliary quipment Mounting ccessories Specifications Series Size Mounting Type Qty. Used e f R 0 c 3 c 00 d a 170 b RS 0 b b 0 b RT b b Dimensions for ach Type Mounting Type Dimensions D F G H F F a drill b drill D D c 0 1 drill d e drill 1 drill abcdf type e type f drill 19 * T-nut and hex bolts not included

16 uxiliary quipment Tailstock Dimension Drawings Size Model (Tentative) enter height pplicable model D F G H J M TM1 1 RS MT# TM1 1 RS, RS MT# D M TM13 13 RS MT# F TM0 0 R MT#3 TM1 1 R MT#3 H TM R MT#3 G J TM R MT#3 TM0 0 R φ MT# Support Table M Model ode xample for R Series SS0--H1For the R0 with clamp) SS0-H0 (For the R170 SS1 φ 0 φ φ 1 R. 1 enter height lamping torque Product weight SS1 1mm kg 1 SS0 SS 0mm mm 0Nm 1700Nm kg 7..kg 1 3 Series Size enter height Support spindle Without clamp Spacer thickness [mm] 10 RS SS1 SS1 SS1 SS0 M, 1DP φ1 3 φ0h7 φh7 13 φ0 M, 1DP 13 SS1 0 R h7 R φ1 R1/ Hydraulic inlet 3 1 () φh7 φ70 φ1 Dimensions with clamp Dimensions in ( ) are without clamp lamping torque 0Nm/Mpa (φ0h7) (φ0) M, DP φ1 M, 1DP 3 φ0 φ1h7 φ0 0 0mm 1mm mm SS0 SS0 SS mm mm mm 3 00 mm 0mm SS SS mm 1mm SS 1h H φ1h7 φ0 φ170 -φ1 T-slot details +1 0 lamping torque 1700Nm/Mpa 1

17 uxiliary quipment Rotary Joints Specifications Max number of ports Maximum actuation pressure Model R RS RT Size uilt-in xternal ctuation fluid: Hydraulic pressure MPa ctuation fluid: ir 0.7 MPa 1 The +1 indicates the port that in the center bore. Make sure to furnish a line filter in the air supply line. 3 Under prolonged used, a small amount of actuation oil may leak from an oil port toward the adjacent air port. If possible, the adjacent ports should be left open for use as drain ports. uilt-in R170 - R00 Mounting hole dimensions 1.±0.0 -Rc1/ Inport Outport 0 φ φ. 0 xternal R170, 0 0 Outport F D G D F VIW Rc1/ Inport R0, 3, 00 Mounting hole dimensions - φ1. φ 1.±0.0 Outport I H G F D Rc1/ Inport H G F I D 17

18 uxiliary quipment Rotary Joints uilt-in RS, 170, 0, c g uilt-in -Rc1/ RT 1. ± 0.0 φ φ 1 φ a f φ ± d h φ b e Model a b Size (mm) c d e f g h Figure applies to models RS & RS. The RS170 and RS0 have a different shape at d and f. RS Rc1/ RS Rc1/ RS Rc1/ RS Rc1/ φ ompatible Servomotor Models Model FNU MITSUISHI YSKW SNYO OKUM R170 αif/000 HFS R007FP L-MJ-0S R0 αif/000 HFS RFP L-M0J-0S R series R0 R3 αif/00 αif1/00 HFS HFS L-M0J-0S L-M1J-0S R00 αif/00 HF3S L-M0J-S RS αis/000 HF-KP3JW0-S SGMH-0S R000FP RS series RS170 RS0 αis/000 αis/000 HF-KP3JW0-S HF-KP73JW0-S SGMH-0S SGMH-0S R000FP R07FP RS αis/000 HF-KP73JW0-S SGMH-0S RFP RT00 Rotary axis βis1/000 HF-KP3JW0-S SGMH-0S R000FXP Tilt axis βis1/000 HF-KP3JW0-S SGMH-0D R007FP RT series RT Rotary axis Tilt axis αis/000 αis/000 HF-KP3JW0-S HF-KP73JW0-S SGMH-0SJ SGMH-0D R07HXP RFP RT Rotary axis αis/000 HF-KP73JW0-S Tilt axis αis/000 HFS- 1

19 ccuracy Specifications R & RS RS170 RS0 RS No. Measurement Method RS R3 R00 R170 R0 R0 1 Straightness of table top 0.0mm 0.0mm 0.0mm Runout of table top 3 Runout of table reference bore Perpendicularity between table top and reference surface for upright mounting (must not lean forward) (must not lean forward) (must not lean forward) (must not lean forward) (must not lean forward) (must not lean forward) Parallelism between rotary axis and guide blocks for reference surface for upright mounting /0 /0 /0 Deviation between rotary axis and guide blocks for reference surface for upright mounting 7 Parallelism between rotating center and reference surface for upright mounting /0 /0 /0 Indexing accuracy ±arc.sec ±arc.sec ±arc.sec ±arc.sec ±arc.sec ±arc.sec 9 Repeatability arc.sec arc.sec arc.sec arc.sec arc.sec arc.sec RT No. Measurement Method RT00 RT RT 1 Straightness of table top 0.01 over full length 0.01 over full length 0.01 over full length Parallelism between table top and bottom surface of base 3 Runout of table top Runout of table reference bore Parallelism between tilt axis center line and bottom surface of base 0.0 over full length 0.0 over full length 0.0 over full length Perpendicularity between table top and guide block 7 Indexing accuracy Indexing accuracy Rotary axis Tilt axis ±arc.sec ±arc.sec ±arc.sec ±arc.sec ±arc.sec ±arc.sec Repeatability Repeatability Rotary axis Tilt axis arc.sec arc.sec arc.sec arc.sec arc.sec arc.sec 19

20 Technical Information fficiency This indicates the percent of input power which is transmitted to the output. The RollerDrive motion mechanism has high efficiency because it employs rolling contact. fficiency varies depending on conditions such as load torque, rotation speed and temperature. R0 fficiency Output rotation speed rpm rpm rpm 0 rpm TorqueNm Durability RollerDrive Test of changes in RollerDrive positioning accuracy over time Output positioning accuracyarc. sec. xactness, forward directionw xactness, reverse directionw Repeat accuracy, forward directionw Repeat accuracy, reverse directionw 0 0,000 1,3,000 1,00,000,000,000,700,000 3,000,000,000,000,000,000 Number of operations (Times) Test onditions RollerDrive size Output load weight Output load moment of inertia Output rotation angle Output maximum rotation speed cceleration time onstant speed time Deceleration time R0 class test machine kgφ00mm.9 kgm 0-3 degreereciprocating rpm 0. sec 0.7 sec. 0. sec. In the RollerDrive, all rotating elements operate in a state of rolling contact, and thus there is almost no wear, or degradation in accuracy over time. There is almost no change in positioning accuracy after testing operation () million times, and this shows that the outstanding accuracy of the RollerDrive can be maintained over the long term.

21 Technical Information acklash, Lost Motion & Hysteresis Loss General Hysteresis Graph y Hysteresis loss x Torsion angle Rated torque acklash Lost motion Rated torque Torque acting on output acklash Rotation angle which can arise even with zero torque (looseness) Lost motion Torsion angle of the midpoint of the hysteresis curve width which arises when applying ±3% rated torque Hysteresis loss Torsion angle where there is no complete return, when torque is applied in both forward and reverse directions RollerDrive Hysteresis Graph Torsion angle [rad.] R Torque acting on output [N m] For a general reducer, the hysteresis graph can be obtained by applying torque to the output shaft, and plotting the generated torsion angle. acklash, lost motion and hysteresis loss can each be defined from the hysteresis graph, as indicated above. Lost motion and hysteresis loss depend on the material characteristics, and occur in all types of structures. acklash, on the other hand, occurs only when there are gaps or looseness in the structure. acklash has a major effect on accuracy, servo gain and similar factors, and must be minimized. With RollerDrive, backlash is completely eliminated using our unique preload structure, and lost motion and hysteresis loss are controlled to extremely small values due to the results of research on optimizing materials and structures. 1

22 Precautions Notes On ir Supply Sankyo's N ircular Table comes standard equipped with an air purge outlet. (Use it to blow out condensation and coolant to prolong the life of electrical parts and prevent rust in the motor housing.) Supply clean air for the air purge by referring to the drawing shown to the right. (Do NOT block the exhaust outlet.) IN ir combination -01G(SM) (Pressure Gauge G3--01) OUT Lubrication Sankyo's N ircular Table uses an oil bath to protect the internal mechanisms and maintain reliability. Refill and perform oil changes regularly using the oil listed in the instruction manual. Grinding Machine pplications When used in grinding machines, the seal device on the outer periphery of our table may become damaged. The warranty does not cover any such damage. Maximum Rotation Speed The maximum rotation speed for he table given in the specifications refers to the indexing speed. onsult with Sankyo if the table is to be rotated continuously. Otherwise, the table will generate heat and could lose accuracy. This could also cause overload alarms with the servomotor. General Precautions Under the United States trade regulation, RollerDrive N can be restricted to supply or export to a country which may produce weapons or related products. Dimensions and specifications are subjected to be modified without notice. ontents of this catalogue were published in. Whole or part of the contents, mechanisms, logos, drawings belong to Sankyo utomation. No part of the catalog is allowed to copy or redistributed to the third party without the written permission of Sankyo utomation.

23 Service Network SNKYO HIN TRDING O., LTD. SNKYO UTOMTION ITLY SNKYO SISKUSHO O. KOR HNGZHOU SNKYO MHINRY O., LTD THILND SINGPOR TIWN SNKYO INTRNTIONL LIMITD OFFI GNT Global Offices SNKYO UTOMTION State Route 7, Sidney, Ohio 3 U.S.. Phone: (937) Fax: (937) mail: sales@sankyoautomation.com URL: Group ompanies SNKYO SISKUSHO O., LTD Tabatashinmachi, Kita-ku, Tokyo, Japan 11-3 Phone: Fax: mail: overseas@sankyo-seisakusho.co.jp URL: ranch Office SHNZHN Rm 71, Shenzhen Kerry entre, 0 Renminnan Road, Shenzhen 1001 hina Phone: Fax: mail: shenzhen@sankyochina-trading.com ranch Office TINJIN Rm 70, Golden uilding, Nanjing Road, Hexi District Tianjin 001 hina Phone: Fax: SNKYO SISKUSHO O. KOR , Digital mpire, Shin-dong, Youngtong-gu, Suwon-si, Kyeonggi-do, South Korea Phone: + 31 (9) 01 Fax : + 31 (9) 03 HNGZHOU SNKYO MHINRY O., LTD. No. Da Di Road, Xiao Shan conomic and Technology Development Zone, Hangzhou Zhe Jiang 311 hina Phone: Fax : SNKYO HIN TRDING O., LTD. (Shanghai Head Office) Room 13, lock, No.391 Guiping Road, Shanghai 033 hina Phone: Fax : mail: sales@sankyochina-trading.com URL: SNKYO SISKUSHO O. TIWN No., Gongyequ 0th Rd., Xiehe Vil., Xitun Dist., Taichung ity 07, Taiwan (R.O..) Phone: Fax:

24 Represented by: UTOMTION State Route 7 Sidney, Ohio 3 Phone: (937) Sankyo merica Inc. D... Sankyo utomation. Specifications and dimensions are subject to change without notice. onsult Sankyo sales before ordering. Patent rights and copyrights for some mechanisms, trademarks, images, drawings and other material in this catalog all belong to Sankyo Seisakusho o. RollerDrive is a registered trademark of Sankyo Seisakusho o. SI-N-1/01