Electric spindle condition monitoring and fault diagnosing system and monitoring and diagnosing method thereof

Abstract

The invention provides an electric spindle condition monitoring and fault diagnosing system and a monitoring and diagnosing method thereof, which belong to the technical field of numerical control processing. The electric spindle condition monitoring and fault diagnosing system includes an electric spindle device, a signal conditioning and collecting device, a parameter setting module, an audio collecting device, a video monitoring device, a lower computer, an upper computer, and a client. The monitoring and diagnosing method includes the following steps: the fault value ranges of a current sensor, a voltage sensor and a vibration sensor are set through the parameter setting module; and the current sensor and the voltage sensor in the signal conditioning and collecting device respectively detect the current and voltage of the winding, the stator and the rotor in the electric spindle device, and the vibration sensor detects the speed signals of the spindle and the motor in the electric spindle device and the vibration signals of the bearings, the rotating shaft and the spindle casing. The problem that the existing electric spindle fault diagnosis system has a single diagnosis mode and cannot implement intelligent diagnosis is overcome. The reliability and accuracy of fault diagnosis are improved.

Description

technical field [0001] The invention relates to an electric spindle state monitoring and fault diagnosis system and a monitoring and diagnosis method thereof, belonging to the technical field of numerical control processing. Background technique [0002] Electric spindle is a new technology born on the basis of CNC machine tool spindle click technology and mechanical technology, and is one of the key technologies in the field of high-number machining. Yu motorized spindle is directly involved in material cutting, and its load is changeable, which is one of the weak links of machining centers, and its state seriously affects the performance of CNC machine tools. According to statistics, the spindle failure in the current motor drive system is close to 44.4%, and it is mainly concentrated in the rotor, stator and bearing of the electric spindle, and component failures often eventually lead to equipment damage. Therefore, in order to maintain the cutting performance of the mac...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an electric spindle state monitoring and fault diagnosis system and its monitoring and diagnosis method, which solves the problems in the prior art such as single monitoring mode and failure to report in time when a fault occurs. The voltage, current and vibration of the main components of the main shaft can realize the alarm when the electric main shaft fails, and automatically diagnose the faulty parts to improve the maintenance efficiency

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