Small CNC vertical lathe-Frequently Asked Questions Small Information

1. Self-diagnosis function of CNC machine tool system

Relying on the ability of CNC system to quickly process data, the error site for multi-channel, fast signal acquisition and processing. Then the diagnostic program is used for logical analysis and judgment to determine whether there is a fault in the system and locate the fault in time. The self-diagnosis function of modern CNC system can be divided into the following two categories:

1) Power-on self-diagnosis Power-on self-diagnosis refers to the start of each power-on until it enters the normal operation preparation state. The diagnostic program inside the system automatically performs functional tests on the CPU, memory, printed circuit board, CRT unit, bus, I/O unit and other modules, photoelectric reader and floppy disk drive before running. Confirm that the main hardware of the system is working properly.

2) Fault information prompt When a fault occurs during the operation of the machine tool, the number and content will be displayed on the CRT display. According to the prompt, consult the relevant maintenance manual to confirm the cause of the fault and the troubleshooting method. Generally speaking, the more abundant the fault information prompted by the diagnosis function of the small CNC vertical lathe, the more convenient it can bring to the fault diagnosis, but it should be noted that, some faults can directly confirm the cause of the fault according to the fault content prompt and consult the manual. However, the real cause of some faults is not consistent with the fault content prompt, or a fault shows multiple fault causes, which requires maintenance personnel to find out the internal connection between them and indirectly confirm the cause of the fault.

2. Alarm indicator shows fault

ModernSmall CNC vertical latheCNC system, in addition to the above-mentioned self-diagnosis function and status display and other software alarms. There are also many hardware alarm indicators, which are distributed on the power supply, servo drive and input/output devices. The cause of the fault can be determined according to the indication of these alarm lights.

3. The exchange method

InSmall CNC vertical latheIn, there are often modules or units with the same function. If the same modules or units are exchanged with each other and the failover is observed, the fault location can be quickly determined. This method is often used for fault inspection of servo feed drive devices and can also be used for interchange of the same modules in CNC systems.

4. Measurement and comparison method

For the convenience of detection, the module or unit is equipped with detection terminals. Using multimeters, oscilloscopes and other instruments and meters, the normal value can be compared with the value at the time of failure through the level or waveform detected by these terminals, and the cause of the failure can be analyzed. And the location of the fault, dueSmall CNC vertical latheWith the characteristics of comprehensiveness and complexity, the factors causing the fault are various. The above fault diagnosis methods are sometimes applied at the same time to comprehensively analyze the fault and quickly diagnose the fault site, so as to eliminate the fault. At the same time, some fault phenomena are electrical, but the cause is mechanical. On the contrary, it is also possible that the fault phenomenon is mechanical, but the cause is electrical; or both, therefore, its fault diagnosis is often not simply attributed to electrical or mechanical aspects, but must be integrated, all-round consideration.