Machine tool manufacturers analyze the working principle of machine tool spindle bearing temperature

CNC machine tool spindle operation process, due to the lack of spindle smooth, smooth oil is too viscous and spindle processing, installation and other factors, will cause the spindle bearing temperature rise. The high temperature of the main shaft bearing will cause data expansion, resulting in smaller mechanical clearance and noise and mechanical damage.

The machine tool can be used to measure the temperature of the main shaft bearing. By measuring the temperature rise in the spindle bearing operation, we can understand whether the spindle bearing is normal. Bearing temperature is generally limited to the temperature rise does not exceed 45 ° C, if the temperature of the bearing is found to exceed 70-80 ° C in the monitoring, it should be stopped to check.

The temperature control system uses thermal resistance to measure the temperature of the measuring point, and uses multi-channel digital instruments to display the temperature value of the spindle bearing. PLC to achieve parameter setting, remote monitoring, data storage and alarm processing and other functions. In the actual programming process, there is no need to write the program to read and write the PLC register, after the method of data definition, after the definition of the I/O variable, you can directly use the variable name for system control, operation display, data recording and alarm.

The machine tool customization system sets a start button to start the control program, and sets two red and green indicators to show the temperature condition. The temperature of the 4 measuring points is within the required range, and the green light is on, indicating that the spindle can operate normally; When the temperature of a measured point reaches the upper limit, even if the spindle speed has not reached the requirement, the red light is on, and the corresponding bearing alarm on the display device of the numerical control system is on. The operator will immediately stop the operation of the spindle, and according to the corresponding alarm number to check the status of the spindle bearing at the corresponding orientation, and then prevent the spindle bearing grinding phenomenon.

Modern PLC has strong function, high integration, strong anti-interference ability, flexible configuration, stable operation and other remarkable characteristics, widely used in the automatic control of modern industry. PLC can expand some intelligent control modules, constitute different control systems, spindle bearing temperature detection is the PLC as the center of intelligent temperature control system, easy to operate, good reliability, has important practical significance.