Jig grinding machine is a machine tool developed for the purpose of eliminating heat treatment deformation of materials.
It can grind holes with high pitch accuracy and various contour shapes.
The machine is equipped with a precision coordinate mechanism, and the moving parts of the grinding wheel frame and the table are equipped with data devices to display the amount of movement.
The jig grinding machine has the same structural layout as the jig boring machine. The difference is that the boring spindle is replaced by a high-speed grinding head.
During grinding, the workpiece is fixed on a table that can be moved by coordinates. In addition to high-speed rotation, the grinding wheel performs a slow revolution through the planetary transmission mechanism and can perform vertical feed motion.
Radial feed can be achieved by changing the radius of the planetary motion of the grinding head.
The grinding head usually uses a high frequency electric grinding head or an air turbine grinding head.
In addition to grinding the cylindrical hole, the jig grinding machine can also grind the inner and outer surfaces of the arc and the conical hole. It is mainly used for machining hardened workpieces, dies and stampers.
Install the grinding fittings on the grinding head so that the axis of the grinding wheel is in a horizontal position. The grinding wheel does not perform planetary motion and only reciprocates up and down. Grinding similar to the insertion type can be performed to machine the inner ring gear, the indexing plate and the cam.
With the application of digital control technology, jig grinding machines have been able to grind various forming surfaces.
Workbench length———————————————– ——–610 mm
Workbench width———————————————– ———280 mm
Longitudinal stroke (X-axis) ——————————————– -450 mm
Lateral travel (Y-axis) ——————————————– ——–280 mm
Vertical stroke (Z axis) ——————————————– ——-92 mm
Single column operation:
Vertical slide stroke ———————————————- ——–320 mm
Spindle center to vertical slide distance ———————————-250 mm
Maximum grinding diameter ———————————————127 mm
With display panel ———————————————– ———304 mm
Spindle end stroke ———————————————– ———340 mm
Operating Voltage———————————————— ———50Hz 3ph 380V
Machine weight ———————————————— ———–1900 Kg
Dimensions———————————————— —————–250018002500 mm
Number of digital reading axes: 0.001
Grinding head speed:
Speed 40,000 rpm
1: When the jig grinding machine is used for high-precision machining, the machine tool must be installed in a constant temperature room with a temperature of 20 °C ± 1 °C and a relative humidity of not higher than 70.5%, and should avoid direct sunlight and local heat source radiation. The room temperature change should not be greater than 0.5 ° C / 4 hours.
2: The ground of the jig grinding machine should have a shockproof groove.
3: The compressed air entering the jig grinding machine should be filtered dry air, and the compressed dew point temperature of the compressed air should be lower than 10 °C.
4: After the processed parts are transported into the constant temperature room, the parts must be isothermal for 2~3 hours. The required measuring tools should be isothermal before they can be processed and measured.
5: The weight of the workpiece shall not be greater than the maximum load of the workbench.
6: The machined parts should not be in direct contact with the work surface to prevent damage to the work surface.
7: The spindle axis thermal stability device of the jig grinding machine is an electronic system to reduce the influence of the thermal displacement of the grinding head box caused by the difference of the cold and hot temperature which caused by the operation of the machine tool, and to ensure the machining accuracy.
The thermal stabilizer has been adjusted at the factory, so users should not change it at will.
Do not switch off the power to the unit during use. For this purpose, a separate power switch is provided on the electric control box, and the power supply must not be cut off even when it is not working at night.
If the machine is powered off due to a long period of inactivity, so that the machine has cooled to room temperature, the power of the device should be turned on before the operation, the connection time should not less than 4 hours, so that the machine is hot. , then can be processed.
8: Each axis should be zeroed after the machine is turned on eacg day and restart after the machine is suddenly powered off.
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