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NC Tilting Rotary Table
INSTRUCTION MANUAL
Model：TT140AF2-1
DANGER
・ This instruction manual is for production engineers and maintenance
personnel in charge of operation of this product. When a beginner uses
this product, receive instructions from experienced personnel, the
distributor or our company.
・ Before installing, operating or maintaining this equipment, carefully
read this manual and the safety labels attached to the equipment.
Failure to follow these instructions and safety precautions could result
in serious injury, death, or property damage.
・ Store this manual near equipment for future reference.
・ If any questions related to safety arise about this manual, please
confirm them with the distributor or our company.
KITAGAWA IRON WORKS CO., LTD.
Original instructions
MA0618EHG1
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Summary of Contents for Kitagawa TT140AF2-1
- Page 1 ・ Store this manual near equipment for future reference. ・ If any questions related to safety arise about this manual, please confirm them with the distributor or our company. KITAGAWA IRON WORKS CO., LTD. MA0618EHG1...
- Page 2 Thank you for choosing the Kitagawa NC Rotary Table. Kitagawa， a world-renowned precision equipment manufacturer, has developed the finest quality NC Rotary Table with emphasis in high precision and rigidity as its basic principals in design. This unit is installed on the machining centers and suitable for indexing the angle of machining position of the workpieces.
- Page 3 EC DECLARATION OF CONFORMITY We hereby declare that the following our product conforms with the essential health and safety requirements of EC Directives. Product : NC ROTARY TABLE Type : MR Series, MRT Series ,GT Series, MX Series, TMX Series, THX Series, TRX Series, TLX Series, TBX Series, TUX Series, TR Series, TL Series, TP Series, LR Series TM Series, TH Series, TT Series, TW Series, DM Series...
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Page 4: Table Of Contents
CONTENTS Page For Your Safety ･･・・・・・・・・・・・・・・・・ Outside view ･･・・・・・・・・・・・・・・・・ Specifications ･･・・・・・・・・・・・・・・・・ Accuracy Standard ･･・・・・・・・・・・・・・・・・ Operation Ready ･･・・・・・・・・・・・・・・・・ 5-1. Table transfer and mounting to machine tool 5-2. Oiling 5-3. Required lubrication oil volume 5-4. Recommended lubrication oil 5-5. Safety of Oil and Antirust Oil Used for the Unit Inspection ･･・・・・・・・・・・・・・・・・... - Page 5 Page Tilting Axis Over Travel Stop Device ･･・・・・・・・・・・・・・・・・ 14-1. Tilting axis over travel stop device 14-2. Adjusting methods of dog for over-travel on- side 14-3. Adjusting methods of dog for over-travel on+ side Motor Case ･･・・・・・・・・・・・・・・・・ 15-1. To remove motor case 15-2.
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Page 6: For Your Safety
1. For Your Safety Basic Safety Tips Please read this manual and follow instructions carefully. We cannot assume responsibility for damage or accidents caused by misuse of the NC Rotary indexing tables, through non-compliance with the safety instructions. DANGER Turn off the main power of the machine prior to maintenance, check, or repair of the unit, Failure to do so may cause severe injury and/or accident. - Page 7 WARNING Tighten the bolts securely when mounting the unit on the machine table. Please refer to the chart below for the recommended tightening torque of the bolts. Hex. Bolt Size Torque N・m 33.8 58.9 146.3 294.3 Do not touch rotating object during operation. Fingers or hand may be caught into gap.
- Page 8 WARNING Make sure the working area is clear of any foreign object and/or hand when the unit is in operation to avoid any serious accident and/or injury. Do not apply cutting force which exceeds the specification in this manual. Failure to do so may cause severe injury and/or damage to the unit.
- Page 9 WARNING Maintain adequate clearance between the unit and any part of the machine. Avoid bending the external cables and air tube of the unit. Use a support, steady rest, or tailstock for heavy or long workpieces to prevent any injury and/or accident. Workpiece Tailstock Steady Rest...
- Page 10 CAUTION Avoid sudden impact to any part of the unit which may cause damage to the internal mechanism. Mount or dismount the workpiece to or from the unit while the unit is clamped to avoid damage to the internal mechanism and diminished indexing accuracy of the unit.
- Page 11 CAUTION Supply air through Air combination (Air filter, Mist separator, regulator) ＋ Drain catcher. (The air supply port is on the motor case.) Apply air purge inside the motor case and be sure to provide dry air. Drain catcher （SMC） Air filter Regulator Drain...
- Page 12 NOTICE Coat each cover mounting face for motor case with liquid packing. Because coolant is entered, NC rotary table may be damaged. Attach each O-ring to motor case mounting face, etc. as shown in the following figure. (Do not damage each O-ring.) Because coolant is entered, O-ring NC rotary table may be damaged.
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Page 13: Outside View
2.Outside view The following figure is the standard outside view of model TT140. For detailed models, refer to appendix outside views in the end of manual. Lub. Oil supply port for tilting axis Motor case for tilting axis Cover Oil gauge for Motor case for tilting axis rotating axis... -
Page 14: Specifications
3.Specifications MODEL TT140 ITEM Table Diameter φ140 Table Height in Horizontal Center Height in Vertical Total Height in Vertical Table reference hole diameter φ60 Table through hole diameter φ32 Clamping Torque (Rotating axis) N･m [Pneumatics 0.5MPa] (Tilting axis) N･m Allowable Workpiece Dia. φ140 (Horizontal) Allowable Mass of Workpiece... - Page 15 The above specification table shows the values at standard NOTICE specifications. For details, refer to the Outside View. Max. table rotation speed is the value when the motor NOTICE rotates at 3000 min Be sure to observe the allowance work inertia even if the CAUTION mass of workpiece is within the allowable value.
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Page 16: Accuracy Standard
4. Accuracy Standard （Unit：mm） Allowable Inspection Item Value Run out of table reference hole 0.010 Run out of table top face during table rotation 0.015 Straightness of table top face (to be concave side.) Total length 0.010 Parallelism of table top face and mounting reference face Total length 0.020 (Tilting axis direction) -
Page 17: Operation Ready
5. Operation Ready After unpacking, the tilting rotary table is mounted to the machine tool. Observe the following procedure before performing the operation (trial run). 5-1. Table transfer and mounting to machine tool 1) When transporting the unit, hook ropes to the eyebolts attached and transport the unit carefully, not giving a shock. -
Page 18: Oiling
The transport and lifting devices must be operated only by CAUTION the qualified persons for respective devices. Operating the transport devices by an unqualified person causes the NC rotary table or machine to be damaged due to an operation error, resulting in accidents. When transporting a pallet on which NC rotary table is CAUTION mounted, take measures against over-turning or drop. -
Page 19: Required Lubrication Oil Volume
5-3. Required lubrication oil volume (Unit:liter) Type TT140 Tilting axis Rotating axis Filled with Daphne Multiway 32MT (IDEMITSU) before shipping. 5-4. Recommended lubrication oil (Viscosity grade ISO VG32) Maker Name IDEMITSU Daphne Multiway 32MT MOBIL Vactra oil No. 1 Uniway EV32 JX NIPPON OIL&... -
Page 20: Inspection
This unit is installed on the machining centers, and on its table surface the chuck or fixture is attached to clamp the workpiece. It indexes the angle of machining position by the control of machining center or Kitagawa’s own controller. During the machining, the working fluid is supplied to retain the workpiece. -
Page 21: Precautions For Table Clamp
8. Table Clamp 8-1. Precautions for table clamp Be sure to rotate the table with the table unclamped and use CAUTION the table with it clamped when machining after positioning. If the table is operated by mistake, take care since the worm wheel may be damaged. -
Page 22: Air Purge
8-3. Air purge Dew drops may occur in the motor case by ambient WARNING environment. In this case, each component including electric apparatus will fail or rust will occur. Therefore, the air is purged and exhausted from the air purge exhaust port. The part of air for clamping is used for the air purge. -
Page 23: Solenoid Valve For Clamp/Unclamp
The set pressure values of pressure switches are as follows: Clamp Check（SP1,SP3） Unclamp Check（SP2,SP4） 0.25MPa 0.055MPa PS1000-R06L-Q-X140 PS1100-R06L-Q-X141 8-5. Solenoid valve for Clamp/Unclamp In case of NC tilting rotary table made by pneumatic clamp specifications, the solenoid valve is incorporated. Since the following piping is used as standard, take care when electric cables are connected. -
Page 24: Maintenance Work
When performing the maintenance work, shut off the power (primary power supply) of the machining center or Kitagawa’s own controller to set the pressure adjusting valve of air combination that supplies the air to the NC rotary table to 0 MPa or shut off the power of the air compressor to exhaust the compressed air, so as to stop the supply of the working fluid. -
Page 25: Backlash Adjustment Of Worm Gears
11. Backlash Adjustment of Worm Gears The worm shaft and worm wheel are made of the special materials and they are accurately machined. The dual lead worm system is adopted for eliminating the backlash of worm gears. It changes the lead of right and left teeth of worm shaft a little and adjusts the backlash for the worm wheel by shifting this worm shaft in the axis direction. -
Page 26: Backlash Measuring Method Of Worm Gears Of Tilting Axis
3) Perform the above measurement at 8 positions by rotating the table and compare them with the above adequate values. T = F×L T：Torque (N・m) F：Applied force (N) L：Distance (m) from table center to point applying force F Fig.2 11-2. Backlash measuring method of worm gears of tilting axis (See Fig.3) 1) Set the dial gauge to the periphery of the table top face. -
Page 27: Backlash Adjusting Method Of Rotating Axis Worm Gears
T = F×L T：Torque (N・m) F：Applied force (N) L：Distance (m) from tilting axis center to point applying force F Fig.3 Table type TT140 Torque Rotating axis T（N・m） Tilting axis 11-3. Backlash adjusting method of rotating axis worm gears (See Fig.4) 1) Drain lubrication oil from the rotating axis lubrication oil drain port. -
Page 28: Backlash Adjusting Method Of Tilting Axis Worm Gears
Each interval between the hole and the hole on the NOTICE periphery of bearing case is 45°. When rotating the bearing case 45°, the backlash of about 8μm is reduced at arc length on the peripheral position of table. Adjust the backlash slowly and carefully without adjusting CAUTION the backlash at a time. - Page 29 5) When loosening eight adjusting screw ② to the same amount and tightening four hexagon socket head cap screws ③ to the same amount, the bearing case ④ advances and the backlash becomes small. The rotating angle of adjusting screw to reduce the backlash NOTICE to 0.01mm is as follows: Type...
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Page 30: Backlash Adjustment Of Spur Gears
12. Backlash Adjustment of Spur Gears 12-1. Backlash adjusting method of rotating axis drive spur gears (See Fig.6) The backlash between Z1 - Z2 spur gears is adjusted by changing a center distance after adjusting the motor position with hexagon bolt ① for the stopper attached to the motor side. 1) Adjust the backlash where the table surface is horizontal. -
Page 31: Backlash Adjusting Method Of Tilting Axis Drive Spur Gears
Motor case Hexagon bolt Hexagon bolt for for stopper ② stopper ① Hexagon bolt for stopper ① Mounting bolt ③ Motor O-ring ④ Mounting bolt ③ Motor Fig.6 12-2. Backlash adjusting method of tilting axis drive spur gears (See Fig.7) 1) Drain lubrication oil from the tilting axis lubrication oil drain port (See the outside view). - Page 32 Hexagon bolt Nut ⑤ for stopper ① O-ring ④ Mounting bolt ③ Hexagon bolt for stopper ② Nut ⑤ Fig.7...
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Page 33: Zrn (Zero Return) Device
13. ZRN (Zero Return) Device ******************************************************************************************************** The contents of this item are unnecessary for the NC rotary table of Kitagawa's controller spec. and 4th and 5th axises spec. which don't have a Proximity switch for ZRN deceleration. Machine zero position of this unit which set at shipment from factory is memorized due to the specification of servo motor with absolute encoder. -
Page 34: Tilting Axis Zrn Device
Proximity switch Cover ④ Cover ① 0.75mm Set screw ③ Dog ② Fig.8 13-2. Tilting axis ZRN device (See Fig. 9-1) 1) The ZRN deceleration dog and the proximity switch are contained into the rotating axis motor case. 2) In the standard specification, the horizontal table face position is regarded as an origin. The proximity switch A ④... -
Page 35: Tilting Axis Over Travel Stop Device
14. Tilting Axis Over Travel Stop Device 14-1. Tilting axis over travel stop device (See Fig.9-1) 1) Remove the cover on the motor case side. 2) The dog and the limit switch for over travel of the tilting axis stroke limit are contained into the rotating axis motor case. - Page 36 When mounting the cover, coat the cover with liquid packing CAUTION (liquid gasket 1216 made by THREE BOND) evenly. 14-3. Adjusting methods of dog for over-travel on+ side (See Fig.9-1) 1) When the customer will change position of dog C ③ according to the shape of workpiece and jig, loosen hexagon socket head set screws which fix the dog and slide the dog C ③...
- Page 37 Dog C for vert. + Dog B for holiz. – side side OT detect ③ OT detect ② mount. Dog B adjustable range Pos. at vert. origin Dog C adjustable range Rotating axis drive motor Limit SW C for vert. + side OT ⑥ Limit SW B for holiz.
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Page 38: Motor Case
15. Motor Case 15-1. To remove motor case When removing the motor case of tilting axis for maintenance, etc., the following procedure is recommended. 1) Remove the covers ② and ③ of motor case ① and disconnect wiring cables from electric apparatuses of motor and solenoid valves, etc. - Page 39 Connector plate ④ Cover ③ Motor case ① Cover ② Hexagon socket head cap screw ⑤ Fig.10...
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Page 40: Motor
16. Motor 16-1. Tilting axis drive motor 16-1-1. To remove motor When replacing the motor, remove the motor according to the following procedure. (See Fig.11) 1) Drain lubrication oil from the lub. oil drain port. (See the outside view.) 2) Remove the motor case according to item 15-1. 3) Loosen hexagon bolt for stopper ⑧. -
Page 41: Rotating Axis Drive Motor
When mounting the motor ④, take extreme care so that CAUTION O-ring ② is not damaged because lubrication oil may enter into the motor case. Connect the connector ① according to item 17-2. Connect CAUTION the connector ③ securely so that the pin does not cause contact failure, and also cables are not bent or crushed. -
Page 42: To Mount Spur Gears
16-2-2. To remount drive motor 1) Clean mounting face (motor ④) and O-ring groove. 2) Attach the O-ring ② and mount the motor ④ by the reverse procedure as the above removing. 3) After mounting the motor, adjust the backlash of spur gears ⑥ according to item 12. Mount the spur gears ⑥... - Page 43 ○ Straight shaft (Locking element spec.) 1) Wipe up dust adhered on the straight shaft surface and inside of super gear and coat them with oil or grease. However, do not use the lubricant of silicon system or molybdenum system, or oil and grease including an extreme-pressure additive agent. 2) Insert the washer, Locking element, spacer and spur gear in order.
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Page 44: Connector
17. Connector When disconnecting connectors (made by MOLEX) such as proximity switches, etc., unavoidably in motor case removing, the following procedure is recommended. 17-1. To remove connector 1) Pushing the claw ③ of receptacle housing, disconnect the plug housing ① and receptacle housing ②. - Page 45 Check that connectors and cables are not damaged before CAUTION connecting. Connect cables so as not to be bent or crushed. CAUTION Do not apply any load to cables. CAUTION...
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Page 46: Troubleshooting
18. Troubleshooting Check corresponding item given in this chapter to take corrective actions when the unit seems to be faulty. If the fault persists, please contact your sales agent (M/C maker) or us. When making an inquiry, let us know the product type and manufacturing number marked on the nameplate of the NC rotary table body. - Page 47 Symptom ②： Table does not rotate but generates a noise Possible causes Corrective actions Motor makes a howling sound to try to rotate Stop the use of NC rotary table immediately. → Seizure of gears due to lack or Please contact the sales agent. deterioration of lubricating oil Gears generate a noise Stop the use of NC rotary table immediately.
- Page 48 Symptom ⑤： Table is not clamped or unclamped Possible causes Corrective actions Faulty solenoid valve Replace the solenoid valve Faulty clamp/unclamp confirming device Check and replace the clamp/unclamp (pressure switch) confirming device (pressure switch) Damage or connection failure of working Check the piping for connection, and replace fluid pipe for clamp Supply pressure of working fluid for...
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Page 49: Parts List
19. Parts List ○ Main Body MARK NAME TT140 Q'ty Recital Hexagon socket flange head screw plug M20x1.5 Gosho with O-Ring Hexagon socket headless tapered pipe plug Rc3/8 M5x8 Machine screw M5x20 Machine screw Seal washer Cover (1) O-Ring M6x20 Hexagon socket head cap screw Hexagon socket headless set screw M8x20... - Page 50 ○ Motor Case (For M Signal) MARK NAME TT140 Q'ty Recital Machine screw M5x8 M5x14 Machine screw Seal washer Connector Plate Cover (1) Cover (2) Cover (3) S130 O-Ring Hexagon socket head cap screw M5x20 Motor case (1) GS220 O-Ring Hexagon socket head cap screw M5x14 KQE08-02...
- Page 51 When the specification is 4th and 5th axises, the motor case and the cable are different from the above figure. For detailed models, refer to attached outside view.
- Page 52 ○ Clamp Detection Device MARK NAME TT140 Q'ty Recital Solenoid valve VQZ342BR-5L1-C8-F-Q Machine screw M3x6 Pressure Switch For Clamp Detection PS1000-R06L-Q-X140 Pressure Switch PS1100-R06L-Q-X141 For Unclamp Detection Plug Silencer PSA103 TAIYO When the specification is different, the model and the installation position of the solenoid valve and the pressure switch are different from the above figure.
- Page 53 ○ Built-in ZRN (Zero Return) Device MARK NAME TT140 Q'ty Recital Machine screw M5x8 Cover O-Ring O-Ring Machine screw M6x8 Washer Holder for Proximity switch Mitsubishi Seal washer DT-1-8 Cable Proximity switch FL7M-2K6H Yamatake No proximity switch is provided for the M signal type.
- Page 54 ○ Accessory MARK NAME TT140 Q'ty Recital Eye bolt Clamp Strength Hexagon head bolt M16x65 Dimension: Washer T-slot nut 1816 When the specification is different, the clamping parts and guide block are different from the above figure. For detailed models, refer to attached outside view.
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Page 55: Storage
20. Storage When storing NC rotary table after removing it from the NOTICE machine tool, place it on the stable wooden base for maintaining accuracy after removing chips or coolant, etc. Coat the table with rust prevention oil and case or lap it with the wooden cover or vinyl cover, etc. -
Page 56: Reference Data
22. Reference Data 22-1. Conversion of arc length and angle “What is the linear length at the table circumference with 20 NOTICE seconds cumulative indexing accuracy ?” “ What is the angle with a cumulative pitch error of 0.01mm ?” To answer these questions, use the following formula representing the relationship between the angle and linear length at the table circumference. -
Page 57: Workpiece Interference Area
22-2. Workpiece interference area Since the following shows standard specifications, take care in case of special specifications. Interference with the clamp device is not considered. Tilting range may be reduced due to fit the Jig or Chuck onto Face plate. (Refer to the back of the Instruction Manual drawing and the outside view.) Set a soft limit by the parameter to prevent interference at the customer. -
Page 58: Piping Diagram On Pneumatic Specifications
23. Piping Diagram on Pneumatic Specifications When removing the piping unavoidably to remove the motor case, refer to the following outside view and circuit diagram. 23-1. Outside view of connection piping system 23-1-1. Outside view of piping system for rotating axis Tilting axis Soft nylon tube TS0806R (red) SMC... - Page 59 23-1-2.Outside view of piping system for tilting axis Pressure switch Soft nylon tube PS1100-R06L-Q-X141 TS0806B (black) SMC Soft nylon tube Soft nylon tube TS0806B (black) SMC TS0806R (red) SMC Reducer KQR06-08 SMC Connector plate Pneumatic supply port Pressure switch PS1000-R06L-Q-X140 Soft nylon tube Soft nylon tube TS0806R (red) SMC...
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Page 60: Pneumatic Circuit Diagram
23-2. Pneumatic circuit diagram Rotating axis Table clamp Inside of rotary table is shown in Clamp Check 0.25MPa frame Customer shall arrange (dotted line) Unclamp Check 0.055MPa Silencer Solenoid Solenoid valve valve Fixed throttle Excitation Clamp Spec (for air purge) Air combination (Air filter + Mist separator + Regulator) + Drain catcher Excitation Unclamp Spec Tilting axis...
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