Introduction
The maintenance of CNC (Computer Numerical Control) machines is an important process for every industry. Maintenance, repair and service of CNC machines means that it can operate stably and rationally with high efficiency and accuracy. The traditional mechanical equipment maintenance is mostly based on experience and judgement, and the CNC machine maintenance needs professional skills and knowledge, not to mention the analysis of malfunction and repair. This article will use an example of CNC machine maintenance to analyze the specific process and methods of CNC machine maintenance, which provides reference for some enterprises and individuals who are involved in CNC machine maintenance.
1. Analysis of the background and main contents of the case
The specific case that this article brings up is about a CNC machining center, mainly for processing hardware products such as plates and profiles. The machine was running for more than 10000 hours of continuous working time and the machine was running more and more slowly due to the gradual and long-term wear of the components.
2. Fault recognition
At the beginning of the maintenance, the fault location of the CNC machine is the most important part. For this CNC machining center, after inspection, the fault is found in the main spindle of the machine. The main spindle of the machine did not run stably or it ran slow, but the specific fault could not be determined at this time.
3. Maintenance methods
After the malfunction of the CNC machine was determined, the following methods of maintenance and repair could be adopted:
(1) Replacement of spare parts: The worn parts of the machine such as bearings, pulleys and spindles can be replaced with new spare parts, and the entire spindle assembly can be replaced.
(2) Machine debugging: After the replaced parts are installed, the speed and stability of the machine need to be tested, and all the settings of the CNC system must be suitable for the working conditions of the machine, so that the machine can work smoothly and stably.
(3) Cleaning, lubrication and maintenance: During the maintenance process, all the lubricating oil in the spindle box should be drained and replaced with clean oil, and all exposed parts and spindles should be washed, oil sprayed and polished to maintain a good lubrication and running status on the surface of the machine.
4. Results of repair
After the repair and maintenance, it was confirmed that the fault of the CNC machine was caused by wear and tear of the main spindle. After the replacement of the spindle, the machine ran smoothly and stably, and the working accuracy of the machine was greatly improved.
Conclusion
From the above analysis, it can be seen that the maintenance, repair and service of CNC machines have strict requirements on the maintenance personnels professional operation knowledge and technical ability. The specific CNC machine maintenance process should be improved according to its own specific working environment and characteristics. The most important thing is to strictly abide by the working procedures of the CNC system and carry out the maintenance process in a professional way to make the machine run better.
