Kitagawa TT140AF2-1 User manual

Original instructions
NC Tilting Rotary Table
INSTRUCTION MANUAL
Model：TT140AF2-1
KITAGAWA IRON WORKS CO., LTD.
MA0618EHG1
・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.
DANGER

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. Please contact us if it is used for any other
applications.
This NC Rotary Table has been designed to provide years of high precision performance. To
ensure optimum and trouble-free performance, please read this operation manual carefully
before using the unit and retain this copy for your future reference.
Please pay close attention to the procedures with the following warning marks to avoid
severe injury and/or accident.
Safety Alert Symbol
This is the industry “ Safety Alert Symbol ”. This symbol is used to call your attention to items
or operations that could be dangerous to you or other persons using this equipment.
Please read these massages and follow these instructions carefully. It is essential that you
read the instructions and safety regulations before you attempt to assemble or use this unit.
NOTICE
Indicates an Imminently hazardous situation which,
If not avoided, will result in death or serious injury.
DANGER
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
WARNING
CAUTION
Instructions for table performance and avoiding
errors or mistakes.

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
Directives : Machinery Directive 2006/42/EC
EMC Directive 2004/108/EC
The above product has been evaluated for conformity with above directives using the
following European standards.
Machinery Directive:
EN ISO 12100-1:2003+A1:2009, EN ISO 12100-2:2003+A1:2009,
EN ISO 14121-1:2007, EN 60204-1: 2006+A1:2009, others
EMC Directive:
Emissoion : EN 55011+A2:2007
Immunity : EN 61000-6-2:2005

CONTENTS
Page
1. For Your Safety ･･・・・・・・・・・・・・・・・・ 1
2. Outside view ･･・・・・・・・・・・・・・・・・ 8
3. Specifications ･･・・・・・・・・・・・・・・・・ 9
4. Accuracy Standard ･･・・・・・・・・・・・・・・・・ 11
5. Operation Ready ･･・・・・・・・・・・・・・・・・ 12
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
6. Inspection ･･・・・・・・・・・・・・・・・・ 15
7. Use of NC Rotary Table ･･・・・・・・・・・・・・・・・・ 15
8. Table Clamp ･･・・・・・・・・・・・・・・・・ 16
8-1. Precautions for table clamp
8-2. Pneumatic supply for clamp
8-3. Air purge
8-4. Check device for Clamp/Unclamp
8-5. Solenoid Valve for Clamp/Unclamp
9. Mounting of Workpiece ･･・・・・・・・・・・・・・・・・ 18
10. Maintenance Work ･･・・・・・・・・・・・・・・・・ 19
10-1. Corrective Action in Case of Failure, and Disassembly
10-2. Before Performing Maintenance Work
11. Backlash Adjustment of Worm Gears ･･・・・・・・・・・・・・・・・・ 20
11-1. Backlash measuring method of worm gears of rotating axis
11-2. Backlash measuring method of worm gears of tilting axis
11-3. Backlash adjusting method of rotating axis worm gears
11-4. Backlash adjusting method of tilting axis worm gears
12. Backlash Adjustment of Spur Gears ･･・・・・・・・・・・・・・・・・ 25
12-1. Backlash adjusting method of rotating axis drive spur gears
12-2. Backlash adjusting method of tilting axis drive spur gears
13. ZRN (Zero Return) Device ･･・・・・・・・・・・・・・・・・ 28
13-1. Rotating axis ZRN device
13-2. Tilting axis ZRN device

Page
14. Tilting Axis Over Travel Stop Device ･･・・・・・・・・・・・・・・・・ 30
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
15. Motor Case ･･・・・・・・・・・・・・・・・・ 33
15-1. To remove motor case
15-2. Countermeasures for waterproof
16. Motor ･･・・・・・・・・・・・・・・・・ 35
16-1. Tilting axis drive motor
16-2. Rotating axis drive motor
16-3. To mount spur gears
17. Connector ･･・・・・・・・・・・・・・・・・ 39
17-1. To remove connector
17-2. To mount connector
18. Troubleshooting ･･・・・・・・・・・・・・・・・・ 41
19. Parts List ･･・・・・・・・・・・・・・・・・ 44
20. Storage ･･・・・・・・・・・・・・・・・・ 50
21. Disposal of NC Rotary Table ･･・・・・・・・・・・・・・・・・ 50
22. Reference Data ･･・・・・・・・・・・・・・・・・ 51
22-1. Conversion of arc length and angle
22-2. Workpiece interference area
23. Piping Diagram on Pneumatic Specifications ･･・・・・・・・・・・・・・・・・ 53
23-1. Outside view of connection piping system
23-2. Pneumatic circuit diagram
Appendixes
Appendix 1 Outside View
Appendix 2 Wiring Diagram
Appendix 3 Details of Nameplate

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.
OFF
ON
OFF
1

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
M10 33.8
M12 58.9
M16 146.3
M20 294.3
Do not touch rotating object during operation.
Fingers or hand may be caught into gap.
2

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.
Please consult your local distributor before attempting any modification of the
unit.
NO!
3

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
Steady Rest
Tailstock
4

CAUTION
Avoid sudden impact to any part of the unit which may cause damage to the
internal mechanism.
NO!
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.
Pneumatic
pressure
When transporting the unit, make sure to use eye bolts and a sufficient leash or
wire.
Eye bolt
Leash or Wire
5

CAUTION
NOTICE
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.
Periodically drain the water in air filter. (It is recommended to use the auto drain type.)
OUT
IN
Replace lubricating oil every 6 months.
A
ir filte
r
Drain Mist separator
Regulator
Drain catcher（SMC）
6

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,
NC rotary table may be damaged.
O-ring
O-ring
7

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 rotating axis
Oil gauge fo
r
rotating axis
Lub. Oil drain port
for rotating axis
Cover
Cover
Motor case fo
r
rotating axis
Motor case for tilting axis
Cover
Oil gauge fo
r
tilting axis
Lub. Oil drain port
for tilting axis
Lub. Oil supply port for tilting axis
Connector plate
Cable
Pneumatic
supply port
Silencer (Rotating axis)
Connector plate
Cable
Pneumatic supply port
Cover Cover
Silencer (Tilting axis)
Screws for eye
bolts (hoist)
Table
Screws for eye bolts (hoist)
8

3.Specifications
MODEL
TT140
ITEM
1 Table Diameter mm φ140
2 Table Height in Horizontal mm 200
3 Center Height in Vertical mm 200
4 Total Height in Vertical mm 303
5 Table reference hole diameter mm φ60
6 Table through hole diameter mm φ32
(Rotating axis) N･m 280
Clamping Torque
7 [Pneumatics 0.5MPa] (Tilting axis) N･m 500
8 Allowable Workpiece Dia. mm φ140
(Horizontal) kg 60
9 Allowable Mass of Workpiece (Vertical) kg 30
2
10 Allowable Work Inertia kg･m0.12
(Rotating axis) 1/72
11 Total Reduction Ratio (Tilting axis) 1/180
-1
(Rotating axis) min 41.6
12 Max. Rotation Speed -1 16.6
(Tilting axis) min
13 Angle of tilting degree -110～110
14 Mass of Rotary Table kg About 143
15 Operating temperature range 5～40
°C
16 Operating humidity range ％30～95
17 Operating altitude range (above sea level) m 1000 or lower
18 Storage temperature range -10～60
°C
19 Environmental pollution degree Degree 3
20 Noise level dB 79
※The noise level is measured at a distance of 1m from the NC rotary table in front, rear,
left, and right four positions of the unit.
※When storing the unit, conduct the antirust treatment and store it in a place free from
wetting, condensation, or freeze.
9

NOTICE The above specification table shows the values at standard
specifications. For details, refer to the Outside View.
NOTICE
Max. table rotation speed is the value when the motor
rotates at 3000 min-1.
Be sure to observe the allowance work inertia even if the
mass of workpiece is within the allowable value.
CAUTION
There is any case that the tailstock is required by the mass
of workpiece, shape, cutting conditions, etc.
CAUTION
CAUTION For the conditions for using the table, refer to the above
specification columns and caution items. Set each cutting
condition so as not to exceed the allowance value.
10

4. Accuracy Standard （Unit：mm）
Allowable
Value
Inspection Item
1 Run out of table reference hole 0.010
2 Run out of table top face during table rotation 0.015
3 Straightness of table top face (to be concave side.) Total length 0.010
Parallelism of table top face and mounting reference face
4 Total length 0.020
(Tilting axis direction)
5 Parallelism of tilting axis center line and mounting reference face Total length 0.020
6 Perpendicularity of table top face and guide block center line Total length 0.020
7 Parallelism of table top face and guide block center line Per 300mm 0.020
Rotating axis Cumulative 30sec
8 Indexing accuracy
Tilting axis Cumulative 60sec
9 Repeatability Cumulative 4sec
2 3
1 4
5 6 7
A
t –90°
A
t 90°
A
t 90°
A
t –90°
A
t 90°
A
t –90°
7,8 Index accuracy is measured with the optical device.
11

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. The ropes used should be wire ropes having enough
strength to lift up the unit.
2) Clean the table face on the machine tool and the mounting base surface of NC table
after checking that burr or flaw is not found. If the burr or flaw is found, repair them with
the oil grinding stone.
3) The motor case may be removed depending on the maintenance work. Accordingly,
whenever possible, install the NC rotary table in a position where the motor case can be
removed. In case of vertical installation, the guide blocks will fit into the slotted groove
on the machine. If there is any play between the guide block and the T-slot, place the
unit against one side of the T-slot to eliminate the gap.
4) Securely fix the NC rotary table to the machine tool with the attached clamper.
Do not enter a part of your body under the NC rotary table
during transportation.
DANGER
Unexpected accidents such as a disengagement of lifting
devices may cause the NC rotary table to drop on your body.
When mounting the NC rotary table to the machine tool, check
the mounting space carefully. Especially, take care so that the
NC rotary table, cables and air/hydraulic hoses will not
interfere with the splash guard or ATC device and spindle head
of machine tool because the table or spindle head moves.
WARNING
Do not damage the cables by placing a heavy thing or
pinching them. If the cables are damaged, there is a danger
of electric shock.
WARNING
Tighten the bolts of clamper at the specified torque by using
the mounting seat effectively.
WARNING
12

CAUTION The transport and lifting devices must be operated only by
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.
CAUTION When transporting a pallet on which NC rotary table is
mounted, take measures against over-turning or drop.
Transporting the pallet with NC rotary table mounted
unstably may cause the NC rotary table to overturn and then
to drop from the pallet.
CAUTION Disconnect electric cables and working fluid piping when
relocating the NC rotary table.
Relocating the NC rotary table with electric cables and
working fluid piping connected and hung down causes the
NC rotary table to be unstable or the worker to be tripped,
resulting in unexpected accidents.
Electric cables or working fluid piping may be damaged
during relocation, and if the NC rotary table is installed on
the machine again, unexpected accidents may occur.
If electric cables and working fluid piping cannot be
disconnected, secure them to the NC rotary table.
5-2. Oiling
Lubrication oil has been already filled in the NC tilting rotary table before shipping.
Check the lubrication oil every day before operating the machine. If oil is reduced, replenish it.
CAUTION Replace lubrication oil every 6-month. At this time,
completely drain the oil. When filling the oil tank with
lubrication/hydraulic oil, remove the chip and foreign matter
on the oil filler neck. If the chip and foreign matter are
entered, the important parts such as the worm gear,
bearings, etc., are seized and accuracy is reduced. In the
air/hydraulic specification, a clamp alarm occurs.
13

5-3. Required lubrication oil volume
(Unit:liter)
Type TT140
Tilting axis 0.9
Rotating axis 1.0
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
JX NIPPON OIL& ENERGY Uniway EV32
SHELL Shell Tonna oil S32
COSMO Dynaway 32
5-5. Safety of Oil and Antirust Oil Used for the Unit
5-5-1. Scope of application
・ Specified lubricating oil
・ Specified hydraulic oil
（MR，MRT，MX，GT，TM(H)2100･3100，TT(S)101･120，TT140，DM do not use）
・ Antirust oil applied to the unit at delivery (Houghton Japan, Rust Veto 377)
5-5-2. First-aid treatment
Aspiration : In case of much aspiration, go to a place where there is fresh air, and
cover your body with a blanket to keep your body warm. Consult a
doctor if necessary.
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.
Accidental drinking : Consult a doctor immediately without vomiting forcibly. If you are
polluted in your mouth, wash with water thoroughly.
・ For lubrication oils and hydraulic oils other than specified ones, and antirust oils
prepared by the customer, refer to the safety information prepared for respective oils.
14

5-5-3. Flammable characteristics
・ Watch out for fire since lubricating oil and hydraulic oil are flammable. Hazardous
substances will be generated if they combusted.
・ The flash point of lubricating oil and hydraulic oil put in the unit at the delivery exceeds
200°C. It may be different from that of the lubricating oil and hydraulic oil prepared by
the customer.
・ Antirust oil is highly volatile and thus likely to catch fire, and also it mixes with air to form
explosive mixture gas.
・ The flash point of antirust oil applied to the unit at the delivery is 38°C. It may be
different from that of the antirust oil prepared by the customer.
5-5-4. Disposal of lubricating oil and hydraulic oil
Dispose of used lubricating oil and hydraulic oil exhausted from this unit in accordance with
the laws and regulations of your country. You may suffer punishment if you disposed of
waste oil without following the laws and regulations.
6. Inspection
Daily inspection
1) Check the fixing condition of NC tilting rotary table (including jig if mounted).
2) Confirm that the chips accumulating in a rotary part of NC rotary table are removed.
3) Check the electric connection cables and the air hoses are not damaged, and also,
check the pneumatic.
4) Check the zero return motion (machine), indexing motion and position.
5) Check unusual vibration and noise do not occur. (Body, motor)
6) Check unusual heating. (Body, gear box, motor)
Periodical inspection (Inspect the following items every 6-month.)
1) Check the dirt degree of lubrication oil.
2) Check connectors are well mounted and cables are not damaged.
3) Check wiring cables in the motor case do not corrode or are disconnected.
7. Use of NC Rotary Table
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.
15