PRECISION JIG GRINDER
JG-510CM

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.
Precision Jig Grinder - JG-510CM / 1070CM
 
  JG-510CM
WORK RANGE OF THE SLIDES  
X AXIS 500 mm (19.7" )
Y AXIS 300 mm (11.8" )
Z AXIS 100 mm (3.9" )
W AXIS 340 mm (13.4" )
MAX FEED SPEED  
X, Y AXIS 10 m/min
Z AXIS 24 m/min
READING RESOLUTION  
X, Y AXIS 0.01 um
Z AXIS 0.01 um
Cs AXIS 0.001 deg
LOCATION ACCURACY  
X, Y AXIS ±0.0015 mm
POSITION CODER  
X, Y AXIS Linear encoder
Z AXIS Linear encoder
Cs AXIS Magnetic sensor
TABLE  
TABLE AREA (LxW) 700x340 mm (27.6"x13.4")
PERMISSBLE LOAD (MAX) 300 kg
NUMBER OF T-SOLT 5
SHAPE OF T-SOLT 10.0 mm (Width)
WORK RANGE OF THE GRINDING HEAD  
GRINDING-SPINDLE SPEEDS  
ELECTRICAL GRINDING HEAD(MAX.) 30000 rpm or 40000 rpm
WITH HIGH SPEED GRINDING HEAD(MAX.) 60000 rpm
PLANETARY SPEED 5~200 rpm
BORE-DIAMETER CAPACITY 0.5~100 mm (0.02"~3.9")
MAX.DIAMETER OF WHEEL Ø30 mm (dia 1.2")
COLLETS Ø3, Ø6, Ø10, Ø12 mm
U AXIS LAST INPUT INCREMENT 0.001 mm
U AXIS MAX. STROKE 35 mm (1.38")
COOLING SELF BY INPUT Air
LUBRICATION Oil-mist
WEIGHT 3.5 kg
MOTOR  
X AXIS 1.4KW (4Nm)
Y AXIS 1.6KW (8Nm)
W AXIS 1.4KW (4Nm)
Z AXIS 3.2KW
Cs AXIS 0.55KW Spindle
U AXIS Stepping
OUTER DIMENSIONS AND WEIGHT  
LENGTH 2780mm
WIDTH 2733 mm
HEIGHT (MAX.) 2675 mm
HEIGHT (MIN.) 2325 mm
WEIGHT 5010 kg
POWER REQUIREMENT  
VOLTAGE 220v ± 10
MAX. VOLTAGE CONSUMPTION 13KW
COMPRESSED AIR 7 kg / cm2
AIR CONSUMPTION 420 nl / min
NC CONTROLLER FUNCTION  
NC CONTROLLER Fanuc 31i-A
NUMBER OF CONTROLLED AXES 20 axes
SIMULTANEOUSLY CONTROLLED AXES 4 axez
CS CONTOURING CONTROL 1 axes
CHOPPING FUNCTION Built-in
LAST INPUT INCREMENT 0.0001 mm / 0.0001 deg
MAX. STROKE ± 9999.9999 mm / ± 9999.9999 deg
RAPID TRAVERSE MAX 100 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.RECOGNITION) EIA / ISO
LENGTH STORAGE BY PROGRAM 640 m
PARITY CHECK Horizontal and vertical parity
1. Controller: FANUC 31i-A 8. Max. Load ( JG-510CM ) : 300 kg
2. Both for an irregular chopping and planetary grinding jobs. 9. XY Feeding Speed : 10000 mm/min ( Max. )
3. X, Y, Z, CS 4 axes controllable simultaneously. 10. Resolution : 0.01 um ( X, Y, Z )
4. Z axis Motor Driving for vertical chopping. 11. Location accuracy ( JG-510CM ) : + / - 0.0015 mm ( X, Y, Z )
5. Abnormality detecting automatically while power on. 12. Planetary grinding roundness ≦ 0.001 mm
6. Grinding Head r.p.m. adjustment on the controller panel. 13. The Z axis is driven by a linear motor for a motion of high speed as well as high precision.
7. Working Travel ( JG-510CM ) : 500 x 300 x 100 mm ( X, Y, Z ) 14. Special design of 12 modules for various diameters grinding setting.

 

=SKD11 HRC 62° Rough Cut Finish Machining
GRINDING PENCIL (OR GRINDING WHEEL) ( CBN#150 ) ( CBN#150 )
ROTATING SPEED 30.000 rpm 30.000 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 15 minutes About 30 minutes

 

 

 

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