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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.
JG-1270CM WORK RANGE OF THE SLIDES X AXIS 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 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) 1080x860 mm (42.5"x33.9") PERMISSBLE LOAD (MAX) 1000 kg NUMBER OF T-SOLT 8 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 30 mm (1.18") COOLING SELF BY INPUT Air LUBRICATION Oil-mist WEIGHT 3.5 kg MOTOR X AXIS 3.0KW (12Nm) Y AXIS 3.0KW (12Nm) W AXIS 1.6KW (8Nm) Z AXIS 3.2KW Cs AXIS 0.55KW Spindle U AXIS Stepping OUTER DIMENSIONS AND WEIGHT LENGTH 3392 mm WIDTH 2609 mm HEIGHT (MAX.) 3000 mm HEIGHT (MIN.) 2745 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-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-1070CM ) : 1000 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-1070CM ) : + / - 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-1070CM ) : 1000 x 700 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 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