Fault diagnosis of electrical system of nc lathe

Fault diagnosis of electrical system of nc lathe

In view of the fault of electrical system of nc lathe, the process of investigation and fault diagnosis, that is, the troubleshooting process of analysis and diagnosis, so the fault diagnosis method is particularly important.The following is a brief introduction to commonly used diagnostic methods.The methods of visual measurement, touching and energizing are mainly adopted.

Visual inspection is the first method used by maintenance personnel in fault diagnosis.Full-automatic CNC lathe equipment supply first query, to the fault of the site personnel detailed consultation fault occurrence process, fault phenomenon and fault results, and in the whole analysis, judgment process to ask many times;The second is the careful inspection, according to the fault diagnosis principle from the outside to the inside in turn inspection.On the whole machine tool's electric control devices (such as lubricating device, the NC system, temperature control device, etc.) of the alarm indicator of the presence of, whether the motion state of each part in a normal state (such as manipulator, state of spindle, each axis location, knife library, etc.), whether the machine locally on the circuit board has a short circuit, open circuit, must observe the circuit part and whether there are cracks, burns and other phenomena, the phenomenon such as poor contact chip.

For the repaired circuit board, it is necessary to check the presence of components, errors, broken wires, etc.Taizhou precision CNC lathe supply is the third touch, through the machine under the condition of power failure of the main circuit board installation, the insertion of each socket, each power and signal wire (such as servo and motor contactor wiring) connection can find the cause of the fault.

2. Self-diagnosis function method.By using the self-diagnosis function of numerical control system, the alarm information is provided, and the supply of ningbo precision numerical control lathe indicates the general cause of the fault.Three exchange method will be of the same module and unit exchange, to observe the situation of failover, to rapidly determine the fault location. 4. The instrument is comparative law system after failure occurs, the conventional electrical inspection equipment, the fault section of the measured voltage, power supply, such as pulse signal, compare the normal and fault value, can analyze the cause of the failure and their positions.