CNC machine tool on our country's parts processing and industrial development has made a very important effect, the hydraulic system as one of the important structures of CNC machine tool, but because the hydraulic system of CNC machine tool is short of the corresponding protection operations, because the fault of the hydraulic system on the CNC machine tool processing industry has formed a very severe impact. In the future, the need to further pay attention to and improve the protection of the hydraulic system of CNC machine tools, reduce the typical problems of the hydraulic system, and ensure the smooth operation of CNC machine tools

First, the typical problems of the hydraulic system of CNC machine tools

It is very common for the hydraulic system of CNC machine tools to show problems, but because of the problems of the hydraulic system, it has seriously affected the normal operation of CNC machine tools, and even formed a very serious loss for some enterprises. At that time, the typical problems of the hydraulic system of CNC machine tools have the following aspects.

1, hydraulic system oil pollution
Oil pollution is a more common phenomenon in the hydraulic system, oil pollution is also an important cause of the entire hydraulic system problems, because the hydraulic system components in the assembly process will have some pollutants into the system, and even in the system operation process because some parts of the seal is not good will also form the invasion of pollutants. When the pollutants in the hydraulic system exceed a certain amount, the hydraulic system will be shut down or the system will be abandoned. In addition, because some protection and maintenance operators lack awareness of operational responsibilities and enthusiasm, daily protection operations are not in place, resulting in the oil pollutants in the hydraulic system are not eradicated in time, which is also an important reason for the formation of pollutants.

2, the hydraulic system sensation and noise
The hydraulic system sensation and noise is one of the common problems of the hydraulic system, which is primarily the hydraulic pump operating frequency and CNC machine tool unique frequency of the system resonance, other hydraulic pumps in normal operation will inhale some air, these bubbles will be released under the effect of high pressure instantaneously, a pressure pulsation, is the hydraulic system in the operation of noise. The hydraulic system sensation and noise have a very bad influence on the operation of the entire CNC machine tool, affecting the power and quality of the CNC machine tool operation.

3. Creep of hydraulic system
The creep in the hydraulic system of data machine tool has a very bad influence on the operation of the whole system, which will directly affect the quality of the machining parts of CNC machine tools. The main reasons for the hydraulic system creeping are as follows: First, the change of conflict force at low speed movement, the creeping phenomenon of CNC machine tools is mainly presented in the system at low speed movement, mainly because at this time because too much contact surface leads to the addition of conflict, the creeping phenomenon occurs. The second is that the wear of the components will lead to creeping, which will show the loss of the components during the operation of the CNC machine tool, which will add the gap between the components, affect the sealing of the components, and affect the thrust of the hydraulic cylinder to a certain extent, due to the addition of conflict force resulting in creeping.

Second, the treatment of typical faults in the hydraulic system of CNC machine tools

As an important structure of the whole CNC machine tool, the hydraulic system has a very important effect on the operation of the CNC machine tool. However, because the protection and maintenance of the hydraulic system is not in place, the hydraulic system often presents problems, which seriously affects the operation of CNC machine tools. In the future, the need to further improve the protection of the hydraulic system, reduce the problems of the hydraulic system, and better ensure the operation of CNC machine tools.

1, oil pollution problem treatment
In view of the problems caused by oil pollution, relevant finishing methods should be strengthened in daily protection to reduce oil pollution. Reasonable inspection of the requirements of the assembled components of the system to avoid the presence of contaminants in the components. In addition, it is also necessary to arrange professional personnel to clean the hydraulic system and reduce the degree of oil pollution as much as possible. The management personnel can also use advanced skills to use the Arino particle pollution degree detector to detect the particle pollutants in the anti-fuel oil, turbine oil and other oils used in the hydraulic oil control system to avoid the phenomenon of pollutant overspending as far as possible.

2, the hydraulic system sensation and noise fault treatment
The occurrence of hydraulic system sensation and noise problems is mainly caused by the wear of components in the hydraulic system. If you want to reduce sensation and noise, you need to strengthen the protection of components. The hydraulic system can choose low-noise hydraulic components, and reduce the noise of the hydraulic system by reducing the vibration source. In order to reduce noise, mufflers can be installed in the hydraulic system of CNC machine tools, which can effectively reduce noise. In the future, it is also necessary to further improve the equipment of the hydraulic system, and protect and repair personnel about some problematic components to replace them in time to avoid the system sensation and noise caused by component problems.

3. Treatment of creeping problems in hydraulic system
Because the reasons for the creep problem of the hydraulic system are different, different methods are used to correct this problem. Because the hydraulic system will wear some components for a long time, the components of the system need to be replaced regularly to reduce the creep caused by component problems. Other for the crawl caused by poor driving, it can constantly improve the processing accuracy in the process of making parts, strictly inspect every link of the system, add some valves in the hydraulic system to ensure that the oil in the system is sufficient, and add the corresponding exhaust valve or vent valve in the hydraulic system to avoid the vacuum phenomenon of the system.

4, strengthen the protection of the hydraulic system
One of the reasons for the occurrence of hydraulic system problems is that the protection and maintenance operations are not in place, in order to reduce the problems of the hydraulic system, we should strengthen the protection of the system, and arrange professional personnel to check and protect the system regularly. In the protection of the operation to establish a relatively perfect responsibility criteria, regular inspection of the hydraulic system, timely discovery of the hydraulic system safety risks, to ensure the smooth progress of all operations. The management unit of CNC machine tools needs to pay full attention to the protection of the hydraulic system or the entire CNC machine tool, arrange professional skilled personnel for maintenance, actively pay attention to this operation, and reduce the problems of the hydraulic system. As the skills of CNC machine tool protection operators need to continue to improve their own sense of responsibility, fully aware of the importance of protection and maintenance operations, together with the management unit also needs to introduce some high-nature skills protection personnel, to better ensure the use of CNC machine tools, reduce the problems of the hydraulic system.

Three. Conclusion

CNC machine tools play a very important role in China's industrial production, but because the protection of CNC machine tools is not in place, there are often some problems in the hydraulic system of CNC machine tools, which affects the parts processing industry of CNC machine tools. The reasons for the problems of the hydraulic system are many, in the future protection operations need to pay attention to the maintenance of the hydraulic system, regularly replace the parts of the hydraulic system, improve the nature of the maintenance operators, and better get used to the needs of CNC machine tool operations. Strengthening the protection operation of hydraulic system can effectively reduce the incidence of faults and improve the working power of CNC machine tools.