CNC engraving and milling machine dealer is the crystallization of the integration of contemporary high-tech machinery, electricity, light and gas. It is electrically complex, with crisscrossing pipelines and various CNC systems. The products are not interchangeable from the 1970s to the 1990s, and the fault phenomena are also strange. , each is different, especially large and heavy-duty CNC engraving and milling machine dealers, which are expensive, costing about several million dollars each, and require a long time for installation and adjustment (a few months to more than a year). There are thousands of components in a large CNC engraving and milling machine dealer. If one of the components fails, it will cause abnormal phenomena in the machine tool, as well as the connection of wires and the connection of tubes. A little negligence can cause If there is a problem, coupled with the large and heavy-duty CNC engraving and milling machine dealer, it is bulky and used in a factory without a constant temperature. The influence of the environment can easily cause failure. For this reason, the problem of "difficult maintenance" of CNC engraving and milling machine dealers is placed in front of us.

Our country has introduced and manufactured so many CNC engraving and milling machine dealers. How can we quickly find faults and hidden dangers and eliminate them in time? How can these expensive equipment be repaired? I think that first of all, we must have a high sense of responsibility and the spirit of not being afraid of difficulties; second, we must strive to master CNC technology. I have been repairing CNC engraving and milling machine dealers for more than ten years. I think that we must read more, ask more questions, remember more, Think more, practice more (five more), and gradually improve your technical level and maintenance capabilities, so that you can adapt to various more complex situations, solve difficult problems, and repair CNC engraving and milling machine dealers.

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1. Want to read more CNC information

You need to read more and understand the characteristics and functions of various CNC systems and PLC programmable controllers; you need to understand the alarms and troubleshooting methods of CNC systems; you need to understand the meaning of NC and PLC machine tool parameter settings; you need to understand the programming language of PLC ; You need to understand the methods of CNC programming; you need to understand the operation of the control panel and the contents of each menu; you need to understand the performance of the spindle and feed motor and the characteristics of the driver, etc. There is often a lot of CNC information. How do you read it? I think the main thing is to highlight the key points and understand the ins and outs. The key point is to understand the basic composition and structure of the CNC system and master the block diagram. The rest can be "toured" and read through, but each part of the content must be understood and mastered. Because the internal circuit diagram of the CNC system is quite complex, the manufacturer does not provide it. Therefore, it is not necessary to understand it in detail. For example, the NX-154 four-axis five-link blade processing machine uses the A-B10 system. It is necessary to focus on understanding the role of each part, the functions of each board, the direction of the interface, the meaning of the LED lights, etc. Nowadays, there are many types of CNC systems and they are updated quickly. Different manufacturers and different models often vary greatly. To understand its commonality and individuality (particularity). Generally, people who are familiar with repairing SIEMENS CNC systems may not be proficient in troubleshooting A-B systems. Therefore, they should read more, constantly learn and update their knowledge.

2. Read more electrical diagrams and digest them

For each electrical component, such as contactors, relays, time relays, etc., as well as the input and output of the PLC, they must be marked one by one on the electrical diagram. To give a simple example, for example, 1A1 is the contactor for starting the hydraulic pump motor 1M. Generally, the direction of its normally open and normally closed contacts is marked below the diagram. Therefore, the corresponding normally open or normally closed contact 1A1 on a certain page can be marked as hydraulic pump motor on. For a large CNC engraving and milling machine dealer, the electrical diagram has dozens or even hundreds of pages. . To understand, it takes a long time to understand the function of each component. Sometimes, you may not be able to figure out the function of the component after reading it for the first or second time. You should read it more and digest it before writing it down. Therefore, when starting the hydraulic pump motor 1M just mentioned, it should also be clearly marked which external output of the PLC drives the contactor 1A1 to act. The ins and outs must be clear. Some block diagrams in the electrical circuit diagram, such as the driver of each axis, are just a block diagram. As long as you understand certain control conditions (on/off conditions), you can study and consider the details when you have time. The electrical symbols in different countries are different, so you must first understand them clearly. You should also read more of the thick PLC statement lists written by the manufacturer, master the programming language, and make Chinese annotations based on understanding. This can greatly save time in troubleshooting in the future. If you wait until a fault occurs to familiarize yourself with the electrical diagram and PLC statement table, it will definitely waste a lot of time and often lead to wrong judgments.

3. Read more hydraulic and pneumatic diagrams and digest them thoroughly.

For the mechanical, hydraulic, and pneumatic diagrams of the CNC engraving and milling machine dealer, it is necessary to understand their functions and ins and outs. And indicate them one by one on the drawings. For example, the installation action of the German COBURG CNC gantry milling attachment and tool is relatively complicated. It is necessary to decompose the diagram. For example, which solenoid valve is used to lock the tool? What are the corresponding PLC outputs and inputs? Write it down on the diagram, so that you can go from electrical to mechanical actions in one go. At the same time, you should focus on understanding the parts that are closely related to machinery and electricity. For example, the Italian INNSE CNC boring and milling machine uses electro-hydraulic proportional valve technology, and you should focus on understanding its functions and functions, especially the adjustment methods and data, static and dynamic proportional valve currents and corresponding balance pump pressures, understanding both electricity and machinery, mechatronics, and mastering a variety of skills, so that the ability to solve problems will be greater .

4. You should read more foreign languages and improve your reading ability in professional foreign languages.

Don’t understand foreign languages, especially English. It is impossible to understand a large amount of technical information in foreign languages. Relying solely on translation is often not ideal. Reading the foreign language version of technical information is difficult at first, with many new words. After reading more and memorizing, there are only so many commonly used professional words, but it will become smoother later on. A competent maintenance personnel must basically master the language tools.

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