Analysis of soft failure of Black Jack machine tools
The soft faults of Black Jack machine tools can basically be divided into two categories:
The first category is caused by the machine parameter problems in the NC system (sometimes due to improper settings, sometimes due to accidental parameter changes or confusion). For such soft faults, as long as the parameters are adjusted, the fault will naturally disappear.
The second type of soft fault is generally caused by accidental reasons that the NC system is in an infinite loop. For such failures, the system can generally be restored by forced resetting and restarting.
Two examples are used to illustrate:
1. For a Black Jack lathe with FANUC-OT system, a crash occurs every time the Black Jack machine is turned on, and any commands cannot be operated normally. After that, the method of forced reset is adopted. After all the system memory is cleared, the system returns to normal. After re-entering the machine parameters and programs, the machine tool is used normally. This fault is caused by the confusion of machine parameters.
2. A special Black Jack milling machine, Siemens Black Jack system, the Black Jack system displays the alarm "LIMITSWITCH" during batch processing. This failure is caused by the Y-axis stroke exceeding the limit value set by the software. Check that the program value has not changed. After careful observation of the fault phenomenon, when a fault occurs, the displayed Y-axis coordinate is determined to reach the software limit. After careful study, it is found that the compensation value input becomes larger. After the software limit setting is adjusted appropriately, the fault is eliminated. This fault is caused by improper setting of the limit parameters of the Black Jack machine tool software.
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