Cutting chatter online monitoring method and monitoring system
A technology of monitoring system and numerical control system, applied in the field of mechanical processing, can solve the problems of obtaining process system, aggravation, chatter, etc., and achieve the effect of simple calculation process
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[0029] Example 1
[0030] like figure 1 As shown, an online monitoring method for cutting chatter is characterized by comprising the following steps:
[0031] a. Install the vibration sensor on the spindle of the machine tool, read the sensor data, and automatically read the spindle speed m in the CNC system to calculate the spindle passing rate f s =m / 60;
[0032] b. If the amount of sensor data read is greater than or equal to N, Fourier transform and clear the data; if the amount of data is less than N, return to the read sensor data in step a, where N is the set amount of data;
[0033] c. The law that exists between the frequency domain signal and the cutting state is: during stable cutting (no chatter vibration), the vibration energy is concentrated in the spindle passing rate f s On the integral multiple frequency of ; when flutter occurs, the vibration energy deviates from the main shaft pass rate f s Integer frequency of , there will be larger vibration at many ot...
Example Embodiment
[0044] Example 2
[0045] like figure 1 As shown, an online monitoring method for cutting chatter includes the following steps:
[0046]a. Install the vibration sensor on the spindle of the machine tool, read the sensor data, and automatically read the spindle speed m in the CNC system to calculate the spindle passing rate f s =m / 60;
[0047] b. If the amount of sensor data read is greater than or equal to N, Fourier transform and clear the data; if the amount of data is less than N, return to the read sensor data in step a, where N is the set amount of data;
[0048] c. The law that exists between the frequency domain signal and the cutting state is: during stable cutting (no chatter vibration), the vibration energy is concentrated in the spindle passing rate f s On the integral multiple frequency of ; when flutter occurs, the vibration energy deviates from the main shaft pass rate f s Integer frequency of , there will be larger vibration at many other frequencies;
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