Power system and fault diagnosis for CNC lathe processing

For CNC CNC lathe processing companies, power control is an important part of CNC system hardware and a common problem in CNC system maintenance. The following picture lets see which power systems are available!

1. Battery powered

When the machine tool is powered off, some information in the CNC device needs to be saved, so some RAM areas are used to store data using batteries. Most of these batteries are lithium batteries, with a long life but low power.

CNC lathe processing enterprises can also replace this part of the battery with ordinary batteries reduced to the required voltage value through diodes, but you must pay attention to the service life. When replacing the battery, you must install the power supply, otherwise the data will be lost. This is different from your usual habits. Be careful not to short circuit when replacing.

2. AC power supply

AC is a device that provides energy for the control system and a device that provides energy for the servo drive. It has a variety of protection and switching devices such as short circuit, isolation, and loss of pressure protection.

When this AC power supply to the servo system, you must pay attention to the power phase sequence of the installed thyristor device. Once the program is connected incorrectly, the synchronization relationship with the thyristor device will be lost, resulting in a failure.

3. DC power supply

As the control power supply is mostly switching voltage-regulating power supply, with voltages such as +5 V, +24 V, ±15 V, etc. The voltage conditions of each device are different. For example, some supply voltages on the CRT are 24 V, and some are AC 110 V or 220 V.

Therefore, CNC lathe processing companies should be as optimistic as possible to the requirements for the power supply voltage of each terminal. Electricity supply is important, and if a failure occurs, it will lead to irreparable losses. There is also a DC voltage supplied by servo, which is mainly obtained by servo transformers and rectifier devices.

The above is the power system commonly used by CNC lathe processing manufacturers. Let’s take a look at the common fault diagnosis in CNC lathe processing?

1. Practical diagnostic technology

This is done by the maintenance personnel to diagnose the failure of the CNC machine tool through their own sensory organs and experience. Diagnostic procedures that use practical diagnostic techniques vary depending on the type of fault. Various methods can be performed interspersed or synchronized. Comprehensive analysis is required to achieve better results. Practical diagnostic technology does not require complex and expensive instruments, and can be diagnosed anytime and anywhere, and is fast, convenient and accurate, especially suitable for initial diagnosis of machine tools.

2. Modern diagnostic technology

This is a method that uses diagnostic instruments and data processing technology to measure the vibration, noise, temperature and other characteristic parameters of mechanical equipment. The CNC lathe processing manufacturer compares its measured value with the specified value to determine the working status of the mechanical device. Whether it is normal can predict and predict the operating status of the mechanical device; and further qualitative and quantitative analysis of the causes, parts and severity of the fault can be further carried out. Using modern diagnostic technology, the faulty parts can be discovered in time in the early stages of failure of mechanical equipment and repaired to avoid further damage to mechanical parts. At present, modern diagnostic technology is being continuously promoted and applied.

3. Diagnose electrical system failures

The process of investigating, analyzing and diagnosing the faults of the CNC lathe electrical system, that is, investigating, analyzing and diagnosing the faults, so its fault diagnosis method is particularly important .