Kitagawa GT User manual

Original instructions
NC Rotary Table
INSTRUCTION MANUAL
Model：GT
KITAGAWA IRON WORKS CO., LTD. MA0638EHG1
・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

NOTICE
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.
Indicates an Imminently hazardous situation which,
If not avoided, will result in death or serious injury.
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.
Instructions for table performance and avoiding
errors or mistakes.
DANGER
WARNING
CAUTION

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.
Specifications ･････････････････････････････････････････････････・・・・・・・・・・
8
3.
Accuracy Standard ･････････････････････････････････････････････・・・・・・・・・
10
4.
Operation Ready ･････････････････････････････・････････････････・・・・・・・・・
11
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
5.
Inspection ･････････････････････････････････････････････････・・・・・・・・・・・・・
15
6.
Use of NC Rotary Table ･･････････････････････････････・・・・・・・・・・・・・・・・・・
15
7.
Table Clamp ･･････････････････････････・・・・・・・・・・・・･･･････････・・・・・・・・・・
16
7-1. Precautions for table clamp
7-2. Supply of pneumatic for clamp
7-3. Air purge
7-4. Manually-releasing method of clamp
7-5. Checking device for CLAMP/UNCLAMP
7-6. Solenoid Valve for CLAMP/UNCLAMP
7-7. Replacement of excitation CLAMP/UNCLAMP of solenoid valve
8.
Mounting the Workpiece ････････････････････････････････････・・・・・・・・・・・・
20
9.
Maintenance Work ･･････････････････････････････････・・・・・・・・・････・・・・・・
21
9-1. Corrective Action in Case of Failure, and Disassembly
9-2. Before Performing Maintenance Work
10.
Backlash Adjustment of Worm Gears ･･･・・・・･･････・・・・・・・・・・・・・・・・・・・・・
22
10-1. Backlash measuring method of worm gear
10-2. Backlash adjusting method of worm gear
11.
ZRN( Zero Return ) device ･･････････････････････････・･･･････・・・・・・・・・・・・
26
11-1. ZRN device on table
11-2. ZRN device Adjustment
11-3. Sensor Mechanism
12.
Motor Case ･・･･････････････････････････････････････････････・・・・・・・・・・・・・
28
12-1. To remove motor case
12-2. Countermeasures for waterproofing

Page
13.
Troubleshooting ･･････････････････････････････････････・・・・・・・・・・・・・・・・・・
30
14.
Parts List ･･････････････････････････････････････････・・・・・・・・・・・・・・・・・・・・
33
15.
Storage ･･････････････････････････････････････････････････････・・・・・・・・・・・
38
16.
Disposal of NC Rotary Table･･･････････････････････････････・・・・・・・・・・・・・・
38
17.
Conversion of Arc Length and Angle ･････････････････････････・・・・・・・・・・・
39
18.
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

1
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.
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.
ON
OFF
OFF
DANGER

2
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
M10
49.9
M12
86.2
M16
214.6
M20
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.
WARNING

3
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!
WARNING

4
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
WARNING

5
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.
When transporting the unit, make sure to use eye bolts and a sufficient leash or
wire.
Leash or Wire
Eye bolt
NO!
PNEUMATIC
CAUTION