Common Mechanical Failures Of CNC Machine Tools And Preventive Measures
Due to the use of speed control motors, the structure of the CNC machine tool spindle box is relatively simple, and the parts that are prone to failure are the automatic tool clamping mechanism and automatic speed control device inside the spindle. In order to ensure that the tool holder will not loosen by itself during work or power failure, the automatic tool clamping mechanism adopts spring clamping, and is equipped with a travel switch to send a clamping or loosening signal. If the tool cannot be loosened after clamping, consider adjusting the hydraulic cylinder pressure and travel switch device for loosening the tool or adjust the nut on the disc spring to reduce the amount of spring pressing. In addition, the heating of the spindle and the noise of the spindle box cannot be ignored. At this time, the main consideration is to clean the spindle box, adjust the amount of lubricating oil, ensure the cleanliness of the spindle box, replace the spindle bearing, repair or replace the spindle box gear, etc.
