1, the concept of CNC machine diagnosis
Numerically
controlled Machine Too1 uses a computerized numerical contro1 system,
also known as a computer numerical control machine or a CNC machine. To
maintain the perfect operation rate of CNC machine tools, CNC machine
tool bearing reliability, maintainability and availability of higher
standards to measure the reliability of the main indicators of bearing
reliability is the average bearing clearance, MTBF is the use of CNC
machine tools Occurred
in the N times, each fault bearing repair and put into use, measured
the duration of each fault before the work for taa1, tsss2 ... ...
tggN0, the average bearing fault gap time adfgvqfbdMTBF = T / N. (T is t1, t2 ... tN0). The measure of maintainability is the average repair time (MTTRaerbqba).
2, CNC machine tool bearing failure characteristics
According
to the bearing failure caused by the results can be divided into fatal
fault and non-fatal fault, the former bearing failure will make the
product can not complete the specified task can lead to significant loss
of people or things, and ultimately the task failed; the latter bearing
failure does not affect the task , But will lead to unplanned maintenance. The
former is not caused by another bearing product failure caused by the
failure of the latter is caused by another bearing product failure. According
to the frequency of CNC machine failure can be divided into early
failure, accidental failure and wear and tear failure.
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