Kitagawa GT Instruction Manual
  1. Manuals
  2. Brands
  3. Kitagawa Manuals
  4. Industrial Equipment
  5. GT
  6. Instruction manual

Kitagawa GT Instruction Manual

Nc rotary table
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
INSTRUCTION MANUAL
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.
NC Rotary Table
Model：GT
Original instructions
MA0638EHG1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GT and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Kitagawa GT

Summary of Contents for Kitagawa GT

  • 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. MA0638EHG1...
  • 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 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,...

  • Page 4: Table Of Contents

    CONTENTS Page For Your Safety ･････････････････････････････････・・・・・・･･･････・・・・・・・・・・ Specifications ･････････････････････････････････････････････････・・・・・・・・・・ 8 Accuracy Standard ･････････････････････････････････････････････・・・・・・・・・ 10 Operation Ready ･････････････････････････････・････････････････・・・・・・・・・ 4-1. Table transfer and mounting to machine tool 4-2. Oiling 4-3. Required lubrication Oil volume 4-4. Recommended Lubricating Oil. 4-5. Safety of Oil and Antirust Oil Used for the Unit Inspection ･････････････････････････････････････････････････・・・・・・・・・・・・・...
  • Page 5 Page Troubleshooting ･･････････････････････････････････････・・・・・・・・・・・・・・・・・・ 30 Parts List ･･････････････････････････････････････････・・・・・・・・・・・・・・・・・・・・ Storage ･･････････････････････････････････････････････････････・・・・・・・・・・・ 38 Disposal of NC Rotary Table･･･････････････････････････････・・・・・・・・・・・・・・ Conversion of Arc Length and Angle ･････････････････････････・・・・・・・・・・・ Mounting Rotary Joint (Option) ･････････････････････････････・・・・・・・・・・・・・ 40 18-1. Alignment of discharge opening face 18-2. Pining to supply part Appendixes Appendix 1 Outside View Appendix 2 Wiring Diagram Appendix 3 Details of Nameplate...

  • 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. Strength Dimension : 10.9 Hex. Bolt Size Torque N・m 49.9 86.2 214.6 421.4 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.
  • Page 8 WARNING 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. Please consult your local distributor before attempting any modification of 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 Mist separator...
  • Page 12 NOTICE Mount all covers attached with O-rings. (No damages on O-rings) O-ring Cable O-ring Cover Motor Case Do not mount the motor case to the machine tool with the motor case positioned lower than the body. There is a danger that lubrication oil leaks out of the NC rotary table, thus damaging the brake and worm part.

  • Page 13: Specifications

    2. Specifications MODEL GT(M)200 GT(M)250 GT(M)320 ITEM φ200 φ250 φ320 Table Diameter Table Height in Horizontal Center Height in Vertical φ65H7 φ100H7 φ130H7 Center Hole Diameter φ45 φ70 φ105 Thru. Hole Diameter Guide Block Width 14h7 14h7 14h7 Clamping Torque...
  • Page 14 The above specification table shows the values at standard NOTICE specifications. For details, refer to the Outside View. Be sure to observe the allowance work inertia even if the CAUTION mass of workpiece is within the allowable value. There is any case that the tailstock is required by the mass CAUTION of workpiece, shape, cutting conditions, etc.

  • Page 15: Accuracy Standard

    3. Accuracy Standard （Unit：mm） Description of Inspection Guaranteed Accuracy Run-out of center hole 0.01 Run-out of table surface 0.02 Parallelism of table surface and reference plane Per 150mm 0.02 for horizontal installation Parallelism of rotating axis center line and Per 150mm 0.02 reference plane for vertical installation Parallelism of rotating axis center line and guide...

  • Page 16: Operation Ready

    4. Operation Ready After unpacking, the tilting rotary table is mounted to the machine tool. Observe the following procedure before performing the operation (trial run). 4-1. 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 17: Oiling

    Tighten the bolts of clamper at the specified torque by using WARNING the mounting seat effectively. 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.

  • Page 18: Recommended Lubricating Oil

    4-5-1. Scope of application ・ Specified lubricating oil ・ Specified hydraulic oil （ MR ， MRT ， MX ， GT ， TM2100 ･ 3100 ， TH2100 ･ 3100 ， TT(S)101･120，TT140，DM do not use） ・ Antirust oil applied to the unit at delivery (Houghton Japan, Rust Veto 377) 4-5-2.
  • Page 19 Sticking to your skin: Wipe off the oil, and wash your skin with water and soap. If you feel itchy or you get inflamed, consult a doctor immediately. Entering your eye: Wash your eye with fresh water for at least 15 minutes, and then consult a doctor.

  • 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

    SP1:Pressure Switch for Clamp Motor Solenoid Valve Check Valve (GT(M)200) Fig.1 7-2. Supply of pneumatic for clamp 1) Use an appropriate filtration system. (Air Filter, Mist separator, Regulator, Drain catcher set) 2) Connect the pipe exclusive for air pressure durable to max. operating pressure over 0.6 MPa to the air pressure supply port.

  • Page 22: Air Purge

    7-4. Manually-releasing method of clamp The GT series is of construction to maintain air pressure so as not to exert an influence upon a clamp torque even if air pressure supplied to the clamp mechanism fluctuates temporarily. As a result, the NC rotary table cannot be rotated manually because the clamping state is...
  • Page 23 taper screw plug 1/4 with the hexagon wrench. When removing the hexagon socket head taper screw plug NOTICE with a seal, since the seal may be removed, it is necessary to wind a seal tape around the taper screw plug. 2) Since the solenoid valve is built into the motor case, press the manual change button (Fig.3) to exhaust the air pressure.

  • Page 24: Checking Device For Clamp/Unclamp

    7-5. Checking device for CLAMP/UNCLAMP The unit is equipped with two built-in pressure switches for clamp/unclamp detection as shown in Fig.1. The set up pressure of each switch for pneumatic systems is as follows： Signal Clamp Signal (SP1) Unclamp Signal (SP2) Pneumatic 0.25 MPa 0.055 MPa...

  • Page 25: Mounting The Workpiece

    When clips are removed, since there is a possibility that NOTICE clips fly and become lost, support clips by your hand. Port plug Pipe joint Pipe joint Port plug Clip Clip Clip Clip Silencer 【Excitation Unclamp Spec.】 【Excitation Clamp Spec.】 Fig.4 8.

  • Page 26: 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 27: Backlash Adjustment Of Worm Gears

    If the amount of backlash is too small, it may cause a heat NOTICE seizure of the worm and worm wheel. ○ Optimum values of backlash MODEL GT(M)200 GT(M)250 GT(M)320 Backlash in Circular Length of Table O.D.（μm） 14～35 14～42 13～40...

  • Page 28: Backlash Adjusting Method Of Worm Gear

    ② located on the reference plane for vertical installation. 3) Remove covers ④ and ⑤ (only GT(M)200) located on the opposite side of motor case ③.
  • Page 29 When removing the hexagon socket head taper screw plug NOTICE with a seal, since the seal may be removed, it is necessary to wind a seal tape around the taper screw plug. MODEL GT(M)200 GT(M)250 GT(M)320 About 46 About 46 About 44 Amount of face plate O.D.（μm）...
  • Page 30 Adjustment screw ⑫ Hexagon socket head cap screw ⑥ O-Ring ⑬ (Only GT(M)200) Reference plane for vertical installation O-Ring ⑬ (Only GT(M)250, 320) Hexagon socket headless tapered pipe plugs ② （at horizontal installation） Fig.6 Hexagon socket head cap screw ⑮...

  • Page 31: Zrn( Zero Return ) Device

    11. ZRN (Zero Return ) device ******************************************************************************************************** The contents of this item are unnecessary for the NC rotary table of Kitagawa's controller spec. and 4th axis spec. which don't have a dog 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 32: Sensor Mechanism

    11-3. Sensor Mechanism 1) Proximity Switch (See Fig.8) The gap between the dog ③ and the proximity switch ④ should be adjusted to approximately 0.75mm by the 1.00mm pitch thread provided on the proximity switch ④. Hexagon socket headless Hexagon socket flange set screw ②...

  • Page 33: Motor Case

    12. Motor Cover 12-1. To remove motor case Please follow the procedure below for removing the motor cover. (See Fig.9) 1) Remove hexagon socket head cap screws ⑪ jointing the motor case ① and base ⑩. At this time, remove the motor case ① slowly, lifting it. Remove the motor carefully so that an unreasonable load is not applied because cables, air hose, etc.
  • Page 34 Worm shaft ⑨ Hexagon socket head cap screw ⑦ Reference plane for horizontal installation Hexagon socket headless tapered pipe plugs ⑥ （at vertical installation） Coupling ⑧ Motor ② Motor case ① Base ⑩ Hexagon socket head cap screw ③ Hexagon socket head cap screw ⑪ Reference plane for vertical installation O-ring ④...
  • Page 35 13. 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 36 Symptom ②： Table does not rotate but generates a noise Possible causes Corrective actions Motor makes a howling sound to try to Stop rotary table rotate immediately. →Seizure of gears due to lack or Please contact the sales agent. deterioration of lubricating oil Gears generate a noise Stop rotary...
  • Page 37 Stop the use of NC rotary table expired life of components immediately. Please contact the sales agent. See “Manual clamp release method” (GT Air is sealed in by the check valve (GT only) only) Symptom ⑥： Index accuracy error Possible causes...
  • Page 38 14. Parts List ○Main Body MARK NAME GT(M)200 GT(M)250 GT(M)320 Q’ty Recital Hexagon socket flange head screw plug with M20×1.5 Gosho O-Ring Hexagon socket headless tapered pipe plug with Rc 1/4 seal Hexagon socket headless tapered pipe plug with Rc 3/8...
  • Page 39 ○Motor Case (For M Signal) MARK NAME GT(M)200 GT(M)250 GT(M)320 Q’ty Recital Motor case Hexagon socket head cap M6×16 M6×16 screw for motor case O-Ring GS230 GS260 GS295 Machine screw for cable M4×10 When the specification is 4th axis, the motor case and the cable are different from the above figure.
  • Page 40 ○Clamp Detection Device MARK NAME GT(M)200 GT(M)250 GT(M)320 Q’ty Recital Solenoid valve VQZ2921B-5L1-C6-F-Q DC24V: SMC Hexagon socket head cap screw for solenoid M3×6 valve Pressure switch PS1000-R06L-Q-X140 clamp detection Pressure switch PS1100-R06L-Q-X141 unclamp detection Silencer EBKY-L4001 Check valve AKH06A-X433 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 41 ○Built-in ZRN (Zero Return) Device MARK NAME GT(M)200 GT(M)250 GT(M)320 Q’ty Recital O-Ring Machine screw for cover M6×8 Washer Holder for Proximity switch Seal washer DT-1-8 Mitsubishi Cable Proximity switch FL7M-2K6H Yamatake No proximity switch is provided for the M signal type.
  • Page 42 ○Accessory MARK NAME GT(M)200 GT(M)250 GT(M)320 Q’ty Recital Eye bolt Hexagon socket headless set screw Clamp Hexagon head bolt for Strength M16×65 M16×75 clamp Dimension :10.9 Washer T-slot nut When the specification is different, the clamping parts and guide block are different from the...
  • Page 43 15. Storage When removing the unit from the machine table, apply oil to NOTICE prevent rust and store it on a stable wooden stand or in the original crate with the appropriate cover to protect it from dust and maintain its accuracy. Some raw wood is chemically unstable and may cause rust on the unit.
  • Page 44 17. 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 45 (B-size in the following figure). When the rotary joint is mounted additionally or a set of rotary joint parts is replaced, check the product type and manufacturing number, and contact Kitagawa branch or your agent. Spacer...

Table of Contents