Typical faults of hydraulic system of numerical control machine and its treatment
The CNC machines have made very important effects on the machining of parts in our country and the development of industry. The hydraulic system is one of the important structures of CNC machines, but because the hydraulic system of CNC machine is short of corresponding protection work, because of the fault of the hydraulic system of CNC machine tools to add the operation of a very serious impact. In the future, more attention should be paid to improve the protection of the hydraulic system of CNC machine tools, to reduce the typical faults of the hydraulic system, and to ensure the smooth operation of CNC machine.
Typical faults of hydraulic system of numerical control machine
It is very common for the hydraulic system of CNC machine to have faults, but the faults of the hydraulic system seriously affect the normal operation of CNC machine , and even give some enterprises a very serious loss. At that time, the hydraulic system of CNC machine has the following typical problems.
1. Oil Pollution in hydraulic system
Oil Pollution is a relatively common phenomenon in the hydraulic system, and oil pollution is also an important cause of the problems in the whole hydraulic system, because some pollutants will enter the system during the assembly process of the components of the hydraulic system, even in the system operation process because of some parts of the sealing is not good will also form the invasion of pollutants. When the hydraulic system in the amount of pollutants beyond a certain amount will be on the hydraulic system to form downtime or system invalidation of the negative impact. In addition, because some protection and maintenance workers are short of work responsibility awareness and work enthusiasm, and daily protection work is not in place, resulting in the timely removal of oil pollutants in the hydraulic system, this is also an important reason for the formation of added pollutants.
2. The hydraulic system is loud and noisy
The shock and noise of the hydraulic system is one of the common faults of the hydraulic system. This is primarily due to the system resonance between the operating frequency of the hydraulic pump and the unique frequency of the CNC machine. Other hydraulic pumps will draw in some air in normal operation, these bubbles in the effect of high pressure will be released in an instant, a pressure pulsation, is the hydraulic system in the operation of noise. Hydraulic system and noise on the whole CNC machine tools have a very negative impact on the work, affect the power and quality of CNC machine .
3. Crawl on the hydraulic system
The crawl on the hydraulic system of the data machine has a very negative effect on the overall system and will directly affect the quality of the numerical control parts. The primary reasons for the crawling of the hydraulic system are as follows: First, the change of the conflict force during the low-speed movement, the crawling phenomenon of the numerical control machine tool mainly presents in the low-speed movement of the system, this is primarily because at this time because the contact surface too many lead to add conflict, occurs creeping phenomenon. Second, the wear of components will lead to prostrate, in the use of CNC machine will appear the loss of components, which will add the gap between components, affect the sealing of components, to a certain extent, affect the thrust of hydraulic cylinder, creeping due to added conflict.
Treatment of typical faults in hydraulic system of CNC machine
Hydraulic System as an important structure of CNC machine, CNC machine tools on the operation has a very important effect. However, because the protection and maintenance of the hydraulic system is not in place, leading to the hydraulic system often presents problems, seriously affecting the operation of CNC machine tools. Future needs to further improve the protection of the hydraulic system, hydraulic system to reduce the problem, better ensure the operation of CNC machine.
1. Trouble shooting of oil pollution
For the oil pollution problems should be in the day-to-day protection to strengthen the relevant finishing methods to reduce oil pollution. The assembly components of the system need to be properly inspected to avoid contamination of the components. Other needs to arrange professional personnel to hydraulic system cleaning operations, as far as possible to reduce the degree of oil pollution. Management personnel can also use advanced skills, the use of wild particle pollution detection instrument used in the hydraulic oil control system used in fire-resistant oil, turbine oil and other particulate pollutants in the detection, try to avoid overspending on pollutants.
2. Trouble shooting for noise and noise in the hydraulic system
Hydraulic system noise and noise problems mainly occur in the hydraulic system components wear, if you want to reduce noise and noise requirements to strengthen the protection of components, hydraulic system can choose low noise hydraulic components, after cutting the vibration source, the noise of the hydraulic system is reduced. Other in order to reduce the noise can be CNC machine in the hydraulic system equipment silencer, this can effectively reduce the noise. In the future, we need to further improve the hydraulic system equipment, protection and maintenance personnel on some of the problem components to replace in time, to avoid the system caused by component problems and noise.
3. Treatment of creeping fault of hydraulic system
Because the hydraulic system of the crawl fault is different, so the correction of this problem needs to use a different method. Because the hydraulic system will be used for a long time to form some components of the wear, so the need to replace the components of the system at regular intervals, to reduce the prostrate problems caused by the components. Other for the poor driving caused by the crawl, to continuously improve the accuracy of parts manufacturing process, each link of the system for strict inspection, in the hydraulic system to add some valves, to ensure that the system of sufficient oil, in the hydraulic system to add the corresponding vent valve or vent valve, to avoid the system vacuum phenomenon.
4, strengthen the protection of the hydraulic system
In order to reduce the faults of the hydraulic system, it is necessary to strengthen the protection of the system and arrange professional personnel to check and protect the system regularly. In the protection of the establishment of a relatively sound criteria for handling responsibilities, regular inspection of the hydraulic system, the hydraulic system in time to find hidden safety hazards, to ensure the smooth operation. CNC machine processing units need to pay full attention to the hydraulic system or the entire CNC machine protection work, arrange professional technical personnel to carry out maintenance, active attention to this work, reduce the hydraulic system. As the numerical control machine tool skill protection operator needs to constantly improve their own responsibility consciousness, fully aware of the importance of protection and maintenance work, together with the management unit also needs to introduce some high-quality skill protection personnel, better ensure the use of CNC machine tools, reduce the fault of the hydraulic system.
Conclusion
CNC machine play a very important role in China's industrial production, but because the CNC machine protection is not in place, resulting in CNC machine hydraulic system often have some problems, parts addition operation affecting CNC machine . There are many reasons for the faults of the hydraulic system. In the future protection work, it is necessary to pay attention to the overhaul of the hydraulic system, to replace the parts of the hydraulic system on a regular basis, and to improve the essence of the overhaul workers, better get used to the demands of CNC machine work. Strengthening the protection of the hydraulic system can effectively reduce the incidence of faults and improve the work power of CNC machine .
