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Discussion on the Common Method of Fault Diagnosis of CNC System
From:Taian Haishu Machinery Co.,Ltd. Updatetime:2017-3-21 18:08:30 Views:
1.Intuitive hair Rely on the body's organs and simple instrumentation, to find the cause of failure and fault location. This method is commonly used in maintenance work and is the most preferred.

Discussion on the Common Method of Fault Diagnosis of CNC System
1.Intuitive hair
Rely on the body's organs and simple instrumentation, to find the cause of failure and fault location. This method is commonly used in maintenance work and is the most preferred.
2.CNC system self-diagnosis method
Modern system has a self-diagnostic function, once the vertical machining center NC failure, the system will be the corresponding alarm information, according to these alarm information, you can roughly determine the fault location.
3.Data and status check
Data and status checking includes both interface information and parameter checking.
4.Use the NC alarm indicator to diagnose the fault
5.Spare parts replacement method
When the CNC system fails, if you suspect that a part of the problem and can not confirm, you can use the same parts replacement test. Through the replacement method can determine whether the replacement parts are faulty. It is worth noting that the use of this method must pay attention to the board set to be consistent with the original board, otherwise, may cause serious consequences, but also to analyze the surrounding circuit on the replacement board hazards, to avoid damage to the replacement plate. The source of these boards may be part of the stock, or it may be the same function on the machine.
6.Percussion method
For faults with poor contact, you can use the insulating material to tap the suspected part. If the vertical machining center fails or the fault is restored, the fault is near the knock point, which reduces the fault range.
7.Heating, cooling method
8.Pull the power supply method
Some irregularities are related to fluctuations in the grid. Can be manually used to increase or decrease the power supply voltage, check the timing and timing of the failure to determine the fault.
9.Functional program test method
The NC, G, M, T and F codes are written as a comprehensive test program, run the program, check the implementation of which function is faulty, and thus find the point of failure.
10.Machine, electricity, liquid, gas comprehensive analysis method
CNC machine tools are mechanical and electrical integration products. A part of the problem, it may affect the normal operation of CNC machine tools. Therefore, when the vertical machining center fails, you must consider the cause of the failure.
11.Measurement comparison method
There are many test terminals on the CNC circuit board. These terminals are used for the maintenance of the service personnel. Once the fault occurs, the voltage or waveform of the relevant terminal can be measured and then compared with the normal state to judge the fault. Generally speaking, The maintenance information provided by the manufacturer will have the voltage or waveform under normal circumstances, if there are two identical machine tools can also be compared. In addition, maintenance personnel in the usual should be accumulated in these areas of experience and information.
12.Use the PLC to interrupt the state analysis method
PLC is to contact the NC system and the signal between the machine intermediate links, PLC failure, CNC machine tools can not be used normally. When the PLC is faulty, the cause of the interruption is memorized by interrupting the stack. Using the PLC programmer can be in the system to stop the state, call out the interrupt load, according to the reasons for its instructions to determine the fault.

 

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