In CNC machine tools, most of the faults can be traced with data, but there are also some faults that provide vague or even no alarm information, or have a long, irregular and irregular occurrence cycle, which brings many difficulties to search and analyze. For this type of machine tool malfunction, it is necessary to analyze the specific situation and patiently search for it. In addition, comprehensive knowledge of mechanical, electrical, hydraulic and other aspects is particularly required during inspection, otherwise it will be difficult to quickly and correctly find the true cause of the malfunction.

Abnormal machining accuracy faults: System parameter changes or modifications, mechanical failures, unoptimized electrical parameters of machine tools, abnormal motor operation, abnormal position loops of machine tools, or inappropriate control logic are common causes of abnormal machining accuracy faults in CNC machine tools during production. By identifying and addressing the relevant fault points, the machine tools can be restored to normal. In production, it is common to encounter faults with abnormal machining accuracy of CNC machine tools. This type of fault has strong concealment and is difficult to diagnose.