High-speed motorized spindle is the core component of high-speed machining center. In the machining of free-form surface and complex contour of dies, 2-12 mm end milling cutter with smaller diameter is often used. In the processing of electrodes for EDM of copper or graphite materials, a high cutting speed is required. Therefore, the motorized spindle must have a high rotational speed. The high rotational speed is always used to process the die, and the heat generated by the high rotational speed and the vibration that may occur during cutting will affect the accuracy of the die.
In order to ensure the stability of high-speed motorized spindle, sensors are installed on the spindle to measure temperature, displacement and vibration, so as to monitor the temperature rise, axial displacement and vibration of motors, bearings and spindles. Thus, the revised data are provided for the NC system of the high speed machining center to modify the spindle speed and feed speed and optimize the processing parameters. When the spindle produces axial displacement, it can be compensated by zero correction or trajectory correction.
Before use, check that the different axes of grinding wheel connecting rod do not exceed 0.03 mm. When grinding, the axle end should not be impacted. Electric spindle must stop turning completely before oil mist can be closed. Oil mist pipe joints should be cleaned to prevent dirt from entering and causing bearing burnout. Then the oil mist is supplied to the motorized spindle, and the oil mist pipeline should be connected first in use. Oil mist lubrication is recommended to use No. 5 spindle oil to adjust the oil intake of 18-25 drops/min. Regular checks should be made to meet the requirements so as to avoid oil breakage and damage the spindle. Oil lubrication is recommended for the spindle.
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