Power System and Fault Diagnosis of CNC Lathe Machining

For CNC lathe processing enterprises, power control is an important part of CNC system hardware, and it is also a frequent problem in CNC system maintenance. Let's take a look at what power systems are there!

1. Battery powered

When the machine tool is powered off, because some information in the numerical control equipment needs to be saved, some RAM areas use batteries to save data. Most of these batteries It is a lithium battery, which has a long life but low power.

This part of the battery in CNC lathe processing enterprises can also be replaced by ordinary batteries reduced to the required voltage value through diodes, but the service life must be paid attention to. When replacing the battery, the power supply must be installed, otherwise the data will be lost, which is different from the usual habit.

2. AC power supply

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

When the AC power supply supplies power to the servo system, be sure to 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 failure.

3. DC power supply

The DC power supply used for control is mostly switching power supply, with +5 V, +24 V , ±15 V and other voltages, the voltage of each device is different, for example, some of the power supply voltage on the CRT is 24 V, and some are AC 110 V or 220 V.

Therefore, CNC lathe processing enterprises are optimistic about the requirements of the power supply voltage of each terminal as much as possible. The power supply is important, and a failure will result in irreparable losses. There is also a servo-powered DC voltage, which is mainly obtained by the servo transformer and rectifier.

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

1. Practical diagnosis technology

This is the fault diagnosis of CNC machine tools by maintenance personnel through their own sense organs and experience. The diagnostic procedures of applying practical diagnostic techniques are different due to different types of faults. Various methods can be interspersed or carried out synchronously in no particular order. Only by comprehensive analysis can better results be achieved. Practical diagnostic techniques do not require complex and expensive instruments, and can be diagnosed anytime, anywhere, and are fast, convenient and accurate, especially for the initial diagnosis of machine tools.

2.Modern diagnostic technology

This is a kind of use of diagnostic instruments and data processing technology to detect vibration, noise, The method of measuring characteristic parameters such as temperature, the CNC lathe manufacturer compares the measured value with the specified value to judge whether the working state of the mechanical device is normal, so as to predict and predict the operating state of the mechanical device; Qualitative and quantitative analysis of the cause, location and severity of the fault. With the application of modern diagnostic technology, the fault location can be found and repaired in time in the early stage of mechanical equipment failure, so as to avoid further damage to mechanical parts. At present, modern diagnostic technology is being promoted and applied continuously.

3. Diagnose electrical system faults

CNC CNC lathe processing manufacturers investigate, analyze and diagnose the electrical system faults of CNC CNC lathes It is the process of investigating, analyzing and diagnosing faults, so its fault diagnosis method is particularly important.