As we all know, high-speed machining technology is developing rapidly. It is the CNC lathe that promotes this development trend. How to make reasonable use of the performance of CNC lathes and maintain the precision of lathes is very important. Now it is combined with Zhongshan Nuoxin. The technical engineering staff of Intelligent Equipment Co., Ltd. has some experience and common sense that need to pay attention to the power supply. I hope it will help everyone.

       The power supply is the energy support part that keeps the system working properly. The direct result of failure or failure is the system downtime or the destruction of the entire system. In addition, part of the numerical control system operation data, setting data and processing programs are generally stored in the RAM memory, and after the system is powered off, it is maintained by a backup battery or a lithium battery of the power source. Therefore, the downtime is relatively long, and the power supply or the memory may be lost, and the system may not operate.

       Control power is an important part of the hardware of the CNC system, and it is also a part of the problem that often occurs in maintenance. The lathe power system of small CNC lathe manufacturers has two parts: DC and AC.

       (1) DC power supply is mostly used as a switching power supply for control. There are voltages such as +5V, +24V, and ±15V. The voltage conditions of each device are different. For example, the power supply voltage on the CRT is 24V, and some are AC 110V or 220V. Therefore, CNC lathe manufacturers are optimistic about the requirements of the supply voltage of each terminal. The power supply is very important, and if it goes wrong, it will cause irreparable damage. There is also a DC voltage for the servo supply, which is mostly obtained by servo transformers and rectifiers.

       (2) AC power is a device that provides power to the control system and is a device that supplies energy to the servo drive. There are also various protection and switching devices on the AC power supply; there are short circuit, isolation and voltage loss protection. When this AC power supply is supplied to the servo system, it must pay attention to the power supply phase sequence of the device with the thyristor device. Once the program is connected incorrectly, the thyristor device loses the synchronous relationship and causes a malfunction.

       Since some information in the numerical control device is to be maintained in the case of a lathe power failure, a part of the RAM area is battery-held for data maintenance. Most of these batteries are lithium batteries, and have a long life, but the power is small. This part of the battery of CNC lathe manufacturers can also be replaced by ordinary batteries through the diode to achieve the required voltage value, but must pay attention to the life. The battery must be replaced under power-on conditions, otherwise the data will be lost. This is different from the usual practice. When replacing, be careful not to cause a short circuit.