Roller gear index table

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Julia Pope
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1 Roller gear index table model MDF

2 Roller gear index table model MDF Roller gear index table model MDF Support table model MDS 2

Maintenance-free and high speed indexing Rolling transmission of roller gear can keep

with the sliding transmission by means of worm gear.

reducing tact time in machining operation.

3 Maintenance-free and high speed indexing Rolling transmission of roller gear can keep initial accuracy for a long time which provides maintenance-free circumstances compared with the sliding transmission by means of worm gear. The cam rib of roller gear and cam followers make contacts in a preloaded state and there is no backlash between the two. It enables high speed indexing with no brake, which allows excellent productivity by reducing tact time in machining operation. Capable of machining immediately after indexing because of brake-less Roller gear Rotation Shortening Time loss Brake(unlock) Time loss Brake(lock) Worm gear Rotation 1 indexing time 0 Time Cam follower Roller gear Cam rib 3

Rotary joint Index table 7MPa 9 ports for hydraulic oil and air connection, 1 port for coolant connection are provided Support table 7MPa 9 ports for hydraulic oil and air connection, 1 port for

rotary joint with model MDX, compact hydraulic clamp cylinders are applicable which can realize simple and downsized hydraulic fixture mountable on the table.

4 Rotary joint Index table 7MPa 9 ports for hydraulic oil and air connection, 1 port for coolant connection are provided Support table 7MPa 9 ports for hydraulic oil and air connection, 1 port for coolant connection are provided Hydraulic oil /Air 9 ports Hydraulic oil /Air 9 ports Coolant 1 port Coolant 1 port Roller gear index table model MDF Support table model MDS By combining Pascal 7MPa rotary joint with model MDX, compact hydraulic clamp cylinders are applicable which can realize simple and downsized hydraulic fixture mountable on the table. Also max 18 ports of rotary joint is available and the clamp cylinders with sensing function can be used to achieve high grade of machining operation. Rotary joint Hydraulic oil /Air 9 ports Coolant 1port Roller gear index table model MDF Support table model MDS Rotary joint Hydraulic oil /Air 9 ports Coolant 1port Hydraulic oil /Air Swing clamp Sensor model model CTM Swing clamp Sensor model model CTM Hydraulic oil /Air Coolant Hydraulic oil /Air Workpiece Coolant Hydraulic oil /Air Jig plate 4

5 Compact body Unit : mm 9 ports Roller gear index table ports 3 ports No port Support table 5

degrading index accuracy, therefore a periodical inspection and backlash adjustment must be required. The roller gear is maintenance-free and it can operate with high accuracy for a long time.

6 The worm gear causes abrasive wear because of sliding friction. The roller gear can keep machining accuracy for a long time, however the worm gear results an abrasive wear and it causes backlash between the worm wheel and shaft and leads to machining failure and degrading index accuracy, therefore a periodical inspection and backlash adjustment must be required. The roller gear is maintenance-free and it can operate with high accuracy for a long time. Wear Endurance test As a result of endurance test of roller gear table and 3 types of worm gear tables with unbalanced weight, a large increase amount of lost motion was seen in the worm gear table. Lost motion (arcsec(sec.)) Worm gear C Worm gear B Worm gear A Roller gear Number of times for operation (million times of rotaion) Unbalanced weight Testing machine 6 Table Roller gear Worm gear A Worm gear B Worm gear C Load Mass kg Moment of Inertia kg m Unbalance torque Nm Condition of operation Speed of movement rpm Acceleration and deceleration time sec Lost motion Initial stage (arcsec(sec.)) After 1 million rotation (arcsec(sec.)) Increased amount (arcsec(sec.)) CW direction 4 90 indexing (1 rotation) and after that CCW direction 4 90 indexing (1 rotation) is repeated as movement cycle. The lost motion includes not only backlash also mechanical torsion called elastic deformation.

7 Position gap of workpiece due to degradation in accuracy of worm gear In case that the workpiece with mass 60kg and unbalance 50mm is rotated 1 million times, the increase amount of lost motion for worm gear is 64 arcsec(sec.) and 31μ m of position gap occurs. Workpiece(Mass 60kg) Worm gear Worm wheel Workpiece 200 mm Center of gravity Servo motor Gap 31μm Worm shaft Unbalance 50 mm The increase amount of lost motion for roller gear table is 0 arcsec(sec.) in the same test. When high speed indexing the cradle with uneven load on the vertical machining center, machining accuracy can not be kept for a long time due to the abrasive wear of worm gear. 7

SMR MDF 反転機 Specifications ローリングタイプ Ports (Hydraulic and air circuit 9) Diameter of output shaft Port (Coolant 1) Model designation MD F 130 R R F 1 Motor mounting position :Left L R :Right Motor

9 SMR MDF 反転機 Specifications ローリングタイプ Ports (Hydraulic and air circuit 9) Diameter of output shaft Port (Coolant 1) Model designation MD F 130 R R F 1 Motor mounting position :Left L R :Right Motor Motor Center height Servo motor 2 Rotary joint R :Built-in (Nil):None Model MDF130 -RF MDF130 -F With 9 ports Rotary joint No rotary joint Diameter of output shaft mm ø130 Center height mm 150 Diameter of output shaft(mouth) mm ø30h7 Mass kg Total reduction ratio 1/60 Maximum number of revolutions rpm 50(Number of motor rotations 3000rpm) Servo motor FANUC αif4/5000 Index accuracy arcsec(sec) ±20 Repeatability arcsec(sec) 10 * Lubrication Oil bath Operating temperature 0 ~ 40 Allowable loading capacity (When rotating) Allowable No Support table kg 80 payload With Support table kg 160 Moment of Inertia kg m Rotation torque Nm 200 Allowable load capacity (When machining) Radial load kn 6 Loaded torque Nm 346 Loaded moment Nm 600 Specifications of rotary joint Hydraulic and air circuit Cutting fluid Ports Number of circuits Working fluid Max. working pressure 9+1ports 9 ports General mineral based hydraulic oil(iso-vg32 equivalent) / Air MPa 7 Piping port G1/8 Number of circuits Max. working pressure 1 circuit (in the center) MPa 0.3 Piping port G1/8 In case that air is used for rotary joint, use of lubricator is recommendable. In case that working fluid is used, leakage of oil film to the adjacent circuit occurs inside the rotary joint. When both the working fluid and air are used, provide a drain circuit between the hydraulic circuit and air circuit. (In case of the air circuit which allows leakage of oil film, there is no need to provide a drain circuit.) Supply the cutting fluid which is filtered to connecting port of cutting fluid. Purge air to prevent intrusion of coolant into the inside of motor cover. Supply dried clean air to connecting port of air purge. (Reccomendation purge pressure 0.02MPa and flow volume 15L/min. ) And make sure to open the exhaust port of air purge. The allowable moment of inertia is value for Max. number of rotation. The radial load, loaded torque and loaded moment are included in loading mass. The loaded torque shall be 40% of time duty and less than 30sec. * The figure indicates mm displacement at the point of 100mm off from output shaft. 9

10 MDF130R-RF Dimensions With 9 ports Rotary Joint ø11 Hole ø Thread for lift M Oil filler port G (48.4) Output shaft page Drain port G1/2 18 h7 Servo motor Key for positioning Connecting port of air purge Rc1/8 Motor cable 37.5 Primary connection port page 16 Exhaust port of air purge Rc1/8 Check valve AKH04A-01S Mounting Drain port G1/2 Oil level gauge 10

11 SMR MDF130R-F 反転機ローリングタイプ Dimensions No Rotary Joint ø11 Hole ø Thread for lift M Oil filler port G (48.4) Output shaft Drain port G1/2 18 h7 Servo motor Key for positioning Connecting port of air purge Rc1/8 Motor cable 37.5 Exhaust port of air purge Rc1/8 Check valve AKH04A-01S Mounting Drain port G1/2 Oil level gauge 11

12 MDS Specifications Ports (Hydraulic and air circuit 9) Diameter of output shaft Model designation MD S 130 R9 Rotary joint Center height R9 R3 :Built-in (Hydraulic and air circuit 9 ports) :Built-in (Hydraulic and air circuit 3 ports) (Nil):None Port (Coolant 1) Model MDS130-R9 MDS130-R3 MDS130 9 ports 3 ports No rotary joint Diameter of output shaft mm ø130 Center height mm 120 Diameter of output shaft(mouth) mm ø30h7 Mass kg Lubrication Grease lubrication Operating temperature 0~40 Rotary joint Specifications Hydraulic and air circuit Cutting fluid Ports 9+1 ports 3+1 ports Number of circuits 9 ports 3 ports Working fluid Max. working pressure General mineral based hydraulic oil(iso-vg32 equivalent) / Air MPa 7 Piping port G1/8 Number of circuits Max. working pressure 1 circuit (in the center) MPa 0.3 Piping port G1/8 In case that air is used for rotary joint, use of lubricator is recommendable. In case that working fluid is used, leakage of oil film to the adjacent circuit occurs inside the rotary joint. When both the working fluid and air are used, provide a drain circuit between the hydraulic circuit and air circuit. (In case of the air circuit which allows leakage of oil film, there is no need to provide a drain circuit.) Supply the cutting fluid which is filtered to connecting port of cutting fluid. 12

13 MDS130-R9 Dimensions With 9 ports Rotary Joint ø ø11 Hole 63 Thread for lift M (3.8) Output shaft page Grease Nipple h7 230 Key for positioning Primary connection port page 16 13

14 MDS130-R3 Dimensions With 3 ports Rotary Joint ø ø11 Hole 63 Thread for lift M Output shaft page (3.8) Grease Nipple h7 230 Key for positioning Primary connection port page 17 14

15 MDS130 Dimensions No Rotary Joint ø ø11 Hole 63 Thread for lift M Output shaft page Grease Nipple h7 230 Key for positioning

16 Table face((mdf130r-rf/mds130-r9) Dimensions MDF /MDS common Output shaft Primary connection port P.C.D P.C.D. 110 P.C.D ø8 H7 depth 12 (reference pin hole) Only MDF 18-M depth ± ±0.02 Coolant Primary connection port G1/8 Ports(Hydraulic and air circuit) Primary connection port 9-G1/8 Coolant connection port Secondary connectoin port (9 ports) ø9 C1 ø30 H7 ø3.4 ø7.3 O-ring P

17 Table face(mds130-r3) Dimensions MDS Output shaft Primary connection port P.C.D P.C.D P.C.D ø8 H7 depth 12 (reference pin hole) Only MDF 18-M depth ± ±0.02 Coolant Primary connection port G1/8 Ports(Hydraulic and air circuit) Primary connection port 3-G1/8 Coolant connection port Secondary connectoin port (3 ports) ø9 C1 ø30 H7 ø3.4 ø7.3 O-ring P

18 Itami, Hyogo, Japan TEL FAX CERTIFICATE OF APPROVAL ISO9001 PA-513E REV Specifications are subject to change without prior notice.

Technical Specifications

Technical Specifications Overview RollerDrive CNC The answer for a CNC rotary axis Pure Motion By Zero-Backlash Technology TM The RollerDrive CNC, a CNC rotary table, is designed to fulfill the demands