5,140,863

1 2

CNC Cylindrical Grinder

3

Assured High Precision■Equipped wi th the ext remely r ig id hybr id- type

TOYODA STAT○R BEARING which prov ides nometal-to-metal contact and has a high vibrationdamping capac i t y , th i s g r inder assures h ighaccuracy and a long service life.

■The highly rigid machine bed ensures high qualitygrinding even at wheel surface speed 45 m/s.

■High-precision cylindrical grinding ispossible thanks to the high rigidwheelhead feed mechanism and theadjustable 0.1μm feed increments.

■Also available are 45M specification (wheel surfacespeed 45 m/s) and wide width wheel specification (wheelwidth 100mm). This machine is very suitable for highlyefficient grinding by means of the high power wheelspindle motor.

■Equipped with a very accurate minimal vibration workhead.（Photo:Dead spindle workhead）

Grinding force

Pressure from pump

Pressure from pump

Hydrostaticpressure

HydrostaticpressureHydrodynamicpressure

■Spindle at RestHydrostatic pressure liftsand holds the wheelspindle firmly at thebearing center position.

■During rotationCombination of hydrostaticand hydrodynamic pressuresimproves spindle rigidityand vibration absorbingperformance.

High Rigidity

A Long Service Life■The theory of the TOYODA STAT○R BEARING is applied to

the wheelhead and table slideway as well.Fluid lubricationmaintains smooth operation for a long time.

Floating plate

4

■The easily operable angle head and straight slidewheelhead enable longitudinal and radial positioning.

■CNC-driven table-mounted wheel dresser readilyaccommodates wheel shape changes.

２types, such as workhead mounted type and tablemounted type are available.

■The CNC unit for the new generation ''GC50'', built in Know-How backed by years, has improved maintainabilityimmensely.

(1)Working procedure operation display(2)Sequence circuit edit display(3)Lamp display(4)Simple automatic determination function(5)Inspection, maintenance, maintenance item(6)Hierarchical data management

(7)Alarm record display

User-Friendly

■The new maintenance-free pump unit has cut oil

consumption to .(option)

Reduction of industrialwaste and running costs

one third

Angle/straighthead select slide unit(Photo shows the wheelhead rear side)

CNC Cylindrical Grinder

Economy

General machine

Reduction of 2 sets

3sets 1setssets

■Economical machine for Straight/Angular/Internal grinding

5

CNC Unit Specification (GC50)

LCD(Japanese)

LCD(English)

Backlash compensation

Step size compensation

Operation monitor

Lump

Sequence circuit monitor

Sequence circuit edits

Operation procedure

Inspection, maintenance item

Inch/Metric conversion

Canned cycle

Test cycle

Wheel dressing cycle

Return cycle

Single block

Grinding step skip

Rapid feed override 0, 10, 50, 100%

Grinding feed override 0～150%, 10% step

Wheel dresser feed override 0～150%, 10% step

Auto sizer control section

Wheel change prediction

Wheel change min. diameter display

Self diagnosis function

Alarm history display

Production counter

Quality check counter

Wheel dressing interval counter

Wheel truing cycle counter

Machine operation hours

Processing cycle time

Grinding cycle time

Wheel dressing cycle time

MDI on/off switch

Automatic compensation on wheel dressing amount

Computer link

CNCspecification

Controlledaxes

Display unit

Filemanagement

Coordinatesetting

Compen-sation

Display

Operation

Operation

Item No. SpecificationItem No. Specification

Auto-sizer

Programming

Maintenance

Counter(in-set display)

Cycle time(in-set display)

Others

GC50

X-axis(wheelhead feed axis),Z-axis(table feed axis)

Structured data management(pre-grinding, grinding, maintenance)

Grinding data patterns: max.64(30 processes/ pattern, max.1,920 processes)

Position memory(wheel shape, work edge face,diamond roll position, pin)

Simple automatic determination function (Plunge and traverse grinding)

Internal grinding wheel

Grinding cycle Wheel dressing cycle

1. Indirect plunge grinding with feed back from post process gage2. Indirect sizing plunge grinding

3. Direct plunge grinding with feed back from post process gage4. Indirect sizing traverse grinding

5. Taper plunge grinding (left) (option)

6. Taper plunge and traverse grinding (left) (option)

Cylinder

End face

Left taper (option)

Grinding Cycle Patterns

●：Standard、○：Option

■Grinding cycle and wheel dressing cycle (Internal grinding wheel)(Internal grinding unit:OPTION)

6

Grinding cycle Wheel dressing cycle

■Grinding cycle and wheel dressing cycle 　(Angular wheel and straight wheel)

Angular type

Straight type

1. Direct sizing plunge grinding 2. Indirect sizing plunge grinding

3. Direct sizing plunge and traverse grinding 4. Indirect sizing plunge and traverse grinding

5. Direct sizing plunge grinding (with shoulder) 6. Indirect sizing plunge grinding (with shoulder)

7. Direct sizing plunge and traverse grinding (with shoulder) 8. Indirect sizing plunge and traverse grinding (with shoulder)

1. Direct sizing plunge grinding 2. Indirect sizing plunge grinding

3. Direct sizing plunge and traverse grinding 4. Indirect sizing plunge and traverse grinding

5. Right end-face grinding

6. Taper plunge grinding (right) (option)

7. Taper plunge and traverse grinding (right) (option)

9. Direct sizing radius plunge grinding (with shoulder) (option)10. Indirect sizing radius plunge grinding (with shoulder) (option)

※1

※1

※1

※1

11. Direct sizing radius plunge and traverse grinding (with shoulder) (option)12. Indirect sizing radius plunge and traverse grinding (with shoulder) (option)

13. Taper plunge grinding (right) (option)

14. Taper plunge and traverse grinding (right) (option)

● NC data format input function (option) is required for other cycle patterns.※1 The specification of simultaneous 2-axis control (option) should be equipped.※2 The specification of simultaneous 2-axis control (option) should be equipped, depending on the wheel shape and machining accuracy. Please contact our sales.

Point input (Option) (Max.15 points)

Left radiusand recess

Left side taper(Option)

Left radius(Option)

Flat shape with straight

Point input (Option) (Max.15 points)

Nose taper (Option)

Nose radius

※1

※1

※1

※2

※2

※1

Grinding Cycle Patterns

CNC Cylindrical Grinder

7

Accessories

＊1

＊2

＊3＊3＊3

＊3＊3

＊6

＊6

＊4

＊5

＊7＊7＊7＊7

1

2

3

4

5

6

Table swing unit

Table end cover(fixed)

Table end cover(slide)

Table front cover(fixed)

Table front cover(removable)

Table front cover(manual operation type, without windows, without confirmation unit)

Table front cover(automatic operation type, pneumatic type, without windows, with confirmation unit)

Dead spindle workhead infinitely variable speed

Live/Dead spindle workhead (infinity variable speed:16～500min-1, non-swiveling type)

Live/Dead spindle workhead (infinity variable speed, swiveling type)

Carbide-tipped center (MT No.4)

Workhead spindle fixed position stop (proximity switch type)

Manual footstock (manual lever type, stroke: 25mm)

Footstock with manual taper corrector (manual lever type, stroke: 25mm)

Footstock with manual repositioning quill (manual lever type, stroke:25mm, quill stroke :160mm)

Hydraulic footstock (hydraulic stroke:20mm, without confirmation function)

Hydraulic footstock (hydraulic stroke:60mm, without confirmation function)

Hydraulic footstock with manual taper corrector (hydraulic stroke: 60mm,without confirmation function)

Hydraulic footstock with manual repositioning quill (hydraulic stroke: 30mm, quill stroke: 160mm, without confirmation function)

Hydraulic footstock with manual repositioning quill with taper corrector (hydraulic stroke: 60mm, quill stroke: 160mm, without confirmation function)

Carbide-tipped center (MT No.4)

Pedal operation

Confirmation device (center retracted end/advanced end, no workpiece ditect)

Straight and angular selected type wheelhead (510dia, right wheel, angle between table feed spindle and wheelhead spindle 0, 30°：manual selection)

Wheel surface speed: 30M single step speed specification (Wheel spindle mortor 5.5kW)

Wheel surface speed: 45M single step speed specification (Wheel spindle mortor 5.5kW)

Wheel surface speed variable control unit (Inverter control : manual and speed-reduction control only)

Grinding wheel (Straight type, 510dia×75×203.2dia)

Grinding wheel (Angular type, 510dia×75×203.2dia)

Wheel flange (For wheel dia:510, round nut, Wheel width33～80mm)

Thin wheel flange (For wheel dia:510, round nut, Wheel width20～65mm)

Wide wheel flange (For wheel dia:510, round nut, Wheel width50～100mm)

Wide width specification (Wheel spindle motor 7.5kW)

Wheel cover with adjusting handle for front cover (max.wheel width 100mm)

Lubrication pump unit(12L, without low level detective device)

Pump unit of hydraulic and lubricating oil (20L, without low level detective device)

Pump unit of hydraulic and lubricating oil (20L, with low level detective device)

Pump unit of hydraulic and lubricating oil (20L, with low level detective device, fire law is applicable)

Coolant supply unit (150L, without coolant low level detective device)

Coolant supply unit (230L, with cleaning unit and low level detective device)

Coolant supply unit with paper filter (250L, processing capacity 80L/min, with cleaning pump and low levvel detective device)

Magnetic separator (processing capacity 40L/min)

Magnetic separator (processing capacity 80L/min)

Coolant gun

Bed cleaning

Table cleaning

Auto sizer cooling

Grinding wheel dresser (mounted on table)

Grinding wheel dresser (Mounted on workhead)

Diamond holder for internal/external grinding (Mounted on table)

Formed diamond tool (shank diameter ; 8mm)

1234567123451234567891011123456789101112341234567891234

Table

Workhead

Footstock

Wheelhead

Pump unit

Coolantsupply

Specification Select GAccessories

7 Wheeldresser

8

＊8＊8＊8

＊3＊3

＊3

＊9

＊11

＊3、＊10

＊12

＊13

7

8

9

10

11

12

13

14

15

16

17

19

18

20

21

Single point diamond tool (shank diameter ; 8mm) (Only internal grinding)

Tools (special tool kit)

Tools (Wrench/Spanner)

Wheel lifting hook

Wheel balancing stand (for φ510mm wheel)

Wheel balancing arbor

Jib crane for wheel change (to 100kg)

Manual steady rest(φ0～φ100mm)

Manual steady rest(φ100～φ200mm)

Manual screwed type driving dog (φ5～φ50mm,φ50～φ80mm)

Cam-locked type driving dog(φ5～φ45mm, φ45～φ80mm)

3-jaw scroll chuck( Selection from 4'',5'',6'',7'')

Independent 4-jaw chuck (Selection from 4'',6'',7'',8'')

4-slot face plate(φ228mm)

Work holder(one each for R and L ,φ10～φ120)

Auto-sizer for OD (JTEKT made, amplifier built in CNC, 3P, φ5～φ80mm)

High-accurate auto-sizer for OD (JTEKT made, amplifier built in CNC, 3P, φ5～φ80mm)

Spline auto-sizer for OD ( JTEKT made, amplifier built in CNC , with retractor ,3P, φ5～φ80mm)

Automatic lateral locator (mounted on wheelhead, METROL made)

Automatic lateral locator (Fixed on bed)

Gap eliminator (AE sensor)

Pneumatic unit

Electric control unit

Wheel spindle overload protector

Manual pulse generator (mounted on operation panel)

Coolant on/off switch

Work spindle inching switch

100V outlet(mounted on outside-of control box)

Lighting unit (spotlight)

The machine body comes only neo・white.The lower part of bed, hydraulic pump unit, coolant supply unit etc. is dark gray.

Special color other than standard color

JTEKT's standard test pieces grinding

One set each of machine specifications, operation manual and maintenance manual

Simultaneous 2 axes control (Floating plate specifications)

Please refer to the "Internal Grinding Unit"

512345612121231123121212345671211

1

1

＊1 Item 15-2 is required. ＊2 When using the machine by swiveling the work spindle, please utilize the item 7-1.＊3 Item 5-2, 5-3 or 5-4 is required. ＊4 Item 3-4, 3-5, 3-6, 3-7 or 3-8 is required for pedal operation.＊5 Item 3-5, 3-6, 3-7 or 3-8 is required.＊6 Processing capacity 80 L/min.(coolant supply unit or magnetic separator) is recommended for a wide wheel specification or a large volume of coolant.＊7 Item 6-2 or 6-3 is required. ＊8 Item 2-2 or 2-3 is required.＊9 Item 15-2 and item 5-2, 5-3 or 5-4 are required.＊10 Not possible to mount it when an internal grinding unit is mounted.＊11 Painting color shall be specified by mutual agreement.＊12 1 set of Electric Diagram without binding shall be delivered in the Electrical Control Unit＊13 The addition of cycle pattern of option is required for the grinding cycle and dressing cycle.

Wheel dresser

Driving dog

Chuck

T o o l

Auto sizer

Laterallocator

Work holder

Steady rest

Other

Controlunit

SpecialspecificationsInternal

grinding unit

Machinecolor

Customer'srun off testInstructionmanual

Select GSpecification Accessories

CNC Cylindrical Grinder

Standard accessory（When an optional A accessory is chosen, the corresponding standard one is not supplied.）

Optional A accessory Optional B accessory

9

Machine Specifications

Machine layout

, ,

, ,

, ,

2,050

,

,

＊1：Dimensions in ( ) indicates wide wheel specification.(Option)＊2：Numbers in red color indicates 45M (wheel surface speed:45m/s) specification. (Option)＊3：Swiveling angle may be restricted when a footstock other than the standard manual footstock or front table cover of manual open/close-type is selected.＊4：Optional Accessory

Information presented in this brochure is subject to change without prior notice.Available machines or machines shown may vary depending on optional equipment or periodic design changes.The export of commodities or technical data, which are controlled by the Foreign Exchange and Foreign Trade Law, must be made under an export license issued by Japanese Government.Please contact your JTEKT representative for complete details.Always read manuals carefully before using any machinery to ensure safe and proper use.

© JTEKT CORPORATION 2002, 2006Cat. No. M2016E Printed in Japan 051205U

http://www.jtekt.co.jp

Machine tool & Mechatronics DivisionPost code 448-8652, 1, Asahimachi 1-chome,Kariya, Aichi-Pref., JAPANTelephone : (81)566-25-5171Telefacsimile : (81)566-25-5467

BEIJING REPRESENTATIVE OFFICERoom 917, 9/F, Fortune Building. No.5 Dongsanhuan North Road, Chao Yang District, Beijing CHINA 100004Telephone : (86)10-65909356～8Telefacsimile : (86)10-65909359

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