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Third, on the understanding should solve the following aspects of the problem 1. Being able to troubleshoot or implement a function does not mean having the ability to repair or modify a CNC machine. Must also be familiar with the relevant national standards of the industry, especially the content of personnel and property safety is clear and strictly enforced. For example, JB4139 "Metal Cutting Machine Tool and Machine Tool Accessories Safety Protection Technical Conditions", GB/T5226.1 "Industrial Machinery Electrical Equipment Part 1: General Technical Conditions" is clearly understood. To meet the above requirements, you are qualified to carry out CNC machine tool repair.
2. Standardization of repair or refurbishment work is very important. Many equipments use electric AC 380V or DC 600V, high voltage and high current, and there are many related actions in the mechanical part. Especially for numerical control equipment, if you carefully consider the interlock of protection and safety mechanism, it will eventually become a disaster. Generally, the national inspection and acceptance of machine tool equipment manufacturers is strict, and some manufacturers of considerable scale have passed or are trying to pass the mechanical and electrical products "CE" safety certification and ISO9000 series quality certification. Any new product design must be reviewed by the relevant standardization department. Therefore, the installation of new machine tools is relatively safe (but some small or some township enterprises should pay attention to the products). However, when the machine tool is used for a long time, especially after several repairs or modifications, it can ensure that the safety performance does not decrease. This is the responsibility of each equipment management and maintenance personnel, and is the principle of our maintenance work. In JB4139 "Technical Conditions for Safety Protection of Metal Cutting Machine Tools and Machine Tool Accessories", it is stipulated that all structural and functional changes to machine tool equipment must comply with the requirements of this standard. Therefore, we must pay special attention to it.
3. Standardization is the guarantee of machine reliability. For many years, every person who is engaged in the production and processing of machine tools has placed the reliability of machine tools first. Without reliability, there is no such thing as CNC machine tools. In the national standard, the control methods, grounding methods, anti-interference, fault tolerance, mechanical interlocking, and protection of dangerous parts of CNC machine tools have been well established, which effectively guarantees the safe and reliable operation of machine tools. Our experience over the past few years has proven that the failure rate is low when a standard machine with a good standard is implemented. Conversely, the failure rate of a machine tool that does not follow the standard is high.
4. Effectively reduce maintenance costs. Time cost is the main cost of machine tool equipment repair. The loss of CNC machine tools is generally 100-500 yuan / hour, and large machine tools even thousands of yuan / hour. According to the requirements of the standard, complete and accurate, real technical information, complete maintenance records, is an important guarantee to quickly find faults and shorten maintenance time. According to the experience, according to the standard, the idea is clear and the road is familiar. On the contrary, there is no clue. If you encounter the previous maintenance, there is no record, wireless number, no mark is more difficult. Reliable protection measures are important aspects to prevent damage to devices and devices. Frequently, if you spend more than tens of dollars to add a protection link according to the standard requirements, you can avoid losses of several hundred yuan or even thousands of dollars. Spare parts can be less or not prepared. We have encountered accidents that caused the tens of kilowatts of motors to burn out due to failure to protect them according to the standard, resulting in high maintenance costs. There is also a piece of equipment, the protection function is not perfect, there is no chain and alarm monitoring, the danger is in the running, often the mechanical movement parts are damaged, the hydraulic oil is everywhere, the waste is huge, the environment is polluted, and the maintenance is stopped several times a month. The manpower, material resources and financial resources of workshop maintenance are mostly spent on this equipment.
The standardization work involves every equipment management and maintenance personnel, which is the embodiment of quality and technical ability. Let us work together to improve the standardization level of CNC equipment maintenance work, and strive to cultivate a high-quality CNC equipment maintenance team.
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