JG-1270CM

A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required.
The jig grinder is very similar to a jig borer, in that the table positioning and spindles are very accurate (far more than a manual milling machine or lathe).
*It is almost used by tool and die makers in the creation of jigs or mating holes.
There are usually many peripheral elements to a jig grinder, including linear motors, pneumatic grinding head (or electrical grinding head), and various cooling systems for supplying coolant to the work and machine itself.
The machine operates by a high speed spindle rotation.
The spindles are removable and interchangeable to achieve varying process speeds.
Some spindles are fixed speed (60,000 rpm), others are adjustable (30,000 ~ 50,000 rpm), and still others are very high speed (150,000 rpm).

The main spindle has a wide range of speeds to ensure proper grinder feed rates are maintained.
The machines have a standard X and Y table.
All axes are indexed to 0.0001 on the handwheels.
The machine head adopts linear motors.
The spindle rotates at a variable speed and with an accuracy of 0.0001 for very precise holes and grinding.
A reliable jig grinder will let work to achieve a higher degree of efficiency level.
These features are all critical in precise process.

Specification

Work range of the slides

Range of movement
X Axos	1200 mm (47.2" )
Y Axis	700 mm (27.6" )
Z Axis	100 mm (3.9" )
W Axis	360 mm (15.7" )
Max feed speed
X,Y Axis	10 m/min
Z Axis	24 m/min
Reading resolution (Linear scales)
X,Y Axis	0.05 um
Z Axis	0.05 um
Cs Axis	0.001 deg
Location accuracy
X,Y Axis	±0.0025 mm
Position coder
X,Y Axis	Linear encoder
Z Axis	Linear encoder
Cs Axis	Magnetic sensor
Table
Table area (LxW)	1280x860 mm (50.4"x33.9")
Permissble load (max.)	1000 kg
Number of T-slot	8
Shape of T-slot	18.0 mm (Width)

Work range of the grinding head

Grinding-spindle speeds
Electrical grinding head	40000 rpm
Weight	11.5 kg
Max. diameter of wheel	Ø3~Ø55 mm
Electrical grinding head	60000 rpm
Weight	11.5 kg
Max. diameter of wheel	Ø1~Ø10 mm
Planetary speed	5~200 rpm
Bore-diameter capacity	1~100 mm (0.04"~3.9")
Collets	Ø3, Ø6, Ø10, Ø12 mm
U axis last input increment	0.001 mm
U axis max. stroke	30 mm (1.18")
Motor
X Axis (Linear Motor)	3 KW (12Nm)
Y Axis (Linear Motor)	3 KW (12Nm)
W Axis (Servo Motor)	1.6 KW (8 Nm)
Z Axis (Linear Motor)	2 x 2.1 KW
Cs Axis (Spindle Motor)	0.55 KW Spindle
U Axis (Stepping Motor)	Stepping
Outer dimensions and weight
Length	3392 mm
Width	2609 mm
Height (Max.)	3000 mm
Height (Min.)	2750 mm
Weight	7200 kg
Power requirement
Voltage	220v ± 10%
Max. Voltage consumption	15KW
Compressed air	7 kg / cm²
Air consumption	420 nl / min
NC controller function
NC controller	Fanuc 31i-B
Simultaneously controlled axes	4 axes
Max increase up to number of controlled axes	26 axes
Cs contouring control	1 axes
Chopping function	Building in
Last input increment	0.0001 mm / 0.0001 deg
Max. stroke	± 9999.9999 mm / ± 9999.9999 deg
Rapid traverse Max	10 m / min
Rapid traverse override	F0, 25, 50, 100%
Feed per minute	mm / min
Manual handle feed	4 axes
Manual handle feed rate	x1, x10, x100, x1000
Tape code (auto. recognitiom)	EIA / ISO
Program storage length	640 m
Parity check	Horizontal and vertical parity

Machinery Features

Controller：FANUC 31i-B controller.
Implementable of diverse shape grinding.
Capability of synchronize movement of 4 axis(X,Y,Z,CS)
Friendly chopping operation.
Abnormity detecting capability when power on.
Adjustment of grinding head power output by LCD control panel.
Working Travel: 1200 x 700 x 100 mm (X, Y, Z).

MAX load: 1000 kgs.
MAX feeding speed: 10000 mm/min (X & Y & Z).
Resolution: 0.01um.
Planetary grinding roundness ≦ 0.002 mm.
Z axis is driven by high-speed precise linear motor.
12 grinding setting modes.

Capable of synch the 4th axis for maching process	Mold plate	Dresser
Lubricant mist collector	Hydraulic power unit

Grinding Process Example Diagrams

=SKD11 HRC 62°	Rough Cut	Finish Machining
Grinding Pencil(or Grinding Wheel)	( CBN#150 )	( CBN#150 )
Rotating Speed	40.000 rpm	40.000 rpm
Reserving	0.2 mm	0.015 mm
Cutting Feed Rate	40 mm/min	20 mm/min
Cutting Feed	0.1 mm	0.005 mm
Process Time	About 12 minutes	About 20 minutes

Grinding Process Diagram

A：Square hole grinding
B：Round hole grinding
C：Figure 8 hole grinding
D：Profile grinding

Overview

A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required.
The jig grinder is very similar to a jig borer, in that the table positioning and spindles are very accurate (far more than a manual milling machine or lathe).
*It is almost used by tool and die makers in the creation of jigs or mating holes.
There are usually many peripheral elements to a jig grinder, including linear motors, pneumatic grinding head (or electrical grinding head), and various cooling systems for supplying coolant to the work and machine itself.
The machine operates by a high speed spindle rotation.
The spindles are removable and interchangeable to achieve varying process speeds.
Some spindles are fixed speed (60,000 rpm), others are adjustable (30,000 ~ 50,000 rpm), and still others are very high speed (150,000 rpm).

The main spindle has a wide range of speeds to ensure proper grinder feed rates are maintained.
The machines have a standard X and Y table.
All axes are indexed to 0.0001 on the handwheels.
The machine head adopts linear motors.
The spindle rotates at a variable speed and with an accuracy of 0.0001 for very precise holes and grinding.
A reliable jig grinder will let work to achieve a higher degree of efficiency level.
These features are all critical in precise process.

Machinery Features

Controller：FANUC 31i-B controller.
Implementable of diverse shape grinding.
Capability of synchronize movement of 4 axis(X,Y,Z,CS)
Friendly chopping operation.
Abnormity detecting capability when power on.
Adjustment of grinding head power output by LCD control panel.
Working Travel: 1200 x 700 x 100 mm (X, Y, Z).

MAX load: 1000 kgs.
MAX feeding speed: 10000 mm/min (X & Y & Z).
Resolution: 0.01um.
Planetary grinding roundness ≦ 0.002 mm.
Z axis is driven by high-speed precise linear motor.
12 grinding setting modes.

Capable of synch the 4th axis for maching process

Mold plate

Dresser

Lubricant mist collector

Hydraulic power unit

Grinding Process Example Diagrams

=SKD11 HRC 62°	Rough Cut	Finish Machining
Grinding Pencil(or Grinding Wheel)	( CBN#150 )	( CBN#150 )
Rotating Speed	40.000 rpm	40.000 rpm
Reserving	0.2 mm	0.015 mm
Cutting Feed Rate	40 mm/min	20 mm/min
Cutting Feed	0.1 mm	0.005 mm
Process Time	About 12 minutes	About 20 minutes

Grinding Process Diagram

Specification

Work range of the slides

Range of movement
X Axos	1200 mm (47.2" )
Y Axis	700 mm (27.6" )
Z Axis	100 mm (3.9" )
W Axis	360 mm (15.7" )
Max feed speed
X,Y Axis	10 m/min
Z Axis	24 m/min
Reading resolution (Linear scales)
X,Y Axis	0.05 um
Z Axis	0.05 um
Cs Axis	0.001 deg
Location accuracy
X,Y Axis	±0.0025 mm
Position coder
X,Y Axis	Linear encoder
Z Axis	Linear encoder
Cs Axis	Magnetic sensor
Table
Table area (LxW)	1280x860 mm (50.4"x33.9")
Permissble load (max.)	1000 kg
Number of T-slot	8
Shape of T-slot	18.0 mm (Width)

Work range of the grinding head

Grinding-spindle speeds
Electrical grinding head	40000 rpm
Weight	11.5 kg
Max. diameter of wheel	Ø3~Ø55 mm
Electrical grinding head	60000 rpm
Weight	11.5 kg
Max. diameter of wheel	Ø1~Ø10 mm
Planetary speed	5~200 rpm
Bore-diameter capacity	1~100 mm (0.04"~3.9")
Collets	Ø3, Ø6, Ø10, Ø12 mm
U axis last input increment	0.001 mm
U axis max. stroke	30 mm (1.18")
Motor
X Axis (Linear Motor)	3 KW (12Nm)
Y Axis (Linear Motor)	3 KW (12Nm)
W Axis (Servo Motor)	1.6 KW (8 Nm)
Z Axis (Linear Motor)	2 x 2.1 KW
Cs Axis (Spindle Motor)	0.55 KW Spindle
U Axis (Stepping Motor)	Stepping
Outer dimensions and weight
Length	3392 mm
Width	2609 mm
Height (Max.)	3000 mm
Height (Min.)	2750 mm
Weight	7200 kg
Power requirement
Voltage	220v ± 10%
Max. Voltage consumption	15KW
Compressed air	7 kg / cm²
Air consumption	420 nl / min
NC controller function
NC controller	Fanuc 31i-B
Simultaneously controlled axes	4 axes
Max increase up to number of controlled axes	26 axes
Cs contouring control	1 axes
Chopping function	Building in
Last input increment	0.0001 mm / 0.0001 deg
Max. stroke	± 9999.9999 mm / ± 9999.9999 deg
Rapid traverse Max	10 m / min
Rapid traverse override	F0, 25, 50, 100%
Feed per minute	mm / min
Manual handle feed	4 axes
Manual handle feed rate	x1, x10, x100, x1000
Tape code (auto. recognitiom)	EIA / ISO
Program storage length	640 m
Parity check	Horizontal and vertical parity

Accessories / Q'ty

Accessories	Q'ty	Accessories	Q'ty
1. Mini Jack S75	4	11. Clamping Chuck 12x65L	4
2. Mini Jack S95	4	12. Clamping Chuck 12x80L	4
3. Mini Jack S125	4	13. Clamping Chuck 12x100L	4
4. T-bolt M12x50L	4	14. Dial Gauge Frame	1
5. T-bolt M12x75L	4	15. Cutting fluid filtration + Oil mist recovery	1 set
6. T-bolt M12x100L	4	16. Electric grease lubricator	1
7. T-bolt M12x125L	4	17. Cooler(Cycle Type)	1 set
8. T-bolt M12x150L	4	18. CBN Grinding Tool	1 set
9. Flange Nut M12	4	19. Hearing Aid	1
10. Maintenance Tool Box	1	20. Indicator	1

JG-1270CM

Overview

Specification

Machinery Features

Samples of Finished Parts

Grinding Process Diagram

Product Description

Overview

Machinery Features

Grinding Process Example Diagrams

Grinding Process Diagram

Specification

Work range of the slides

Work range of the grinding head

Accessories / Q'ty