Novel numerical control machine tool fault diagnosis system and method

Abstract

The invention discloses a novel numerical control machine tool fault diagnosis system and method. The novel numerical control machine tool fault diagnosis system comprises two acceleration sensors and a speed sensor which are used for acquiring vibration signals generated by a numerical control machine tool, two first signal conditioners for conditioning and outputting the signals output by the acceleration sensors, a second signal conditioner for conditioning and outputting signals output by the speed sensor, a data acquisition card for acquiring the conditioned output signals, and a monitoring computer which is connected with the output end of the data acquisition card and used for calculating and analyzing the vibration signals generated by the numerical control machine tool so as to diagnose a fault of the machine tool. The method comprises the following steps of: 1) acquiring the vibration signals; 2) conditioning the signals; 3) acquiring the data; and 4) analyzing the signals. The novel numerical control machine tool fault diagnosis system disclosed by the invention has a simple hardware structure; diagnosis and analysis functions are realized mainly by software, and the novel numerical control machine tool fault diagnosis system is convenient to upgrade and maintain; and furthermore, the unnecessary stop-to-maintain time is shortened, and the operation efficiency of the machine tool is improved.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tool fault diagnosis, in particular to a numerical control machine tool fault diagnosis system and method thereof. Background technique [0002] In the field of modern mechanical processing, CNC machining has occupied a dominant position, especially for processing parts with large quantities and high precision requirements, various CNC machine tools play an irreplaceable role. Therefore, the working stability and reliability of CNC machine tools are of great significance for improving the production efficiency of enterprises. Using the vibration signal generated when the machine tool is processing, the current running status of the CNC machine tool can be analyzed, and intelligent fault diagnosis can be carried out in advance, so as to avoid the need to stop for a long time for maintenance once a fault occurs. [0003] Through literature search, it is found that the Chinese...

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Problems solved by technology

This kind of device involves more complex circuits, and the signal undergoes multi-level conditioning and conversion, which is easy to cause distortion or attenuation, and the process is complicated and time-consuming

In addition, this device only uses the grinding machine as the object of fault diagnosis

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