Laser cutting machine-the trouble that the laser head often encounters

　　 Fiber laser cutting machine is a very popular application equipment. One of the main components is the laser cutting head. The laser cutting head has a pivotal position in the whole equipment, because of its high precision. So the price is also very expensive. Operators who have just entered the industry will encounter some minor faults in the process of use. Facing these faults, they may be at a loss.

　　Laser cutting machine refers to the use of the energy of the laser beam to cut, and the original beam emitted by the laser is focused through an optical lens to form a high-density light spot, which is used to cut steel pipes and plates , Metal and other materials. It can be seen that in the cutting process, every important processing step cannot be separated from the optical lens. However, if the normal operation and maintenance are not in place, various problems will occur. Today, we will learn about some common problems and solutions of the laser head of fiber laser cutting machine, and let's learn about it together.

　　1. QBH local heating: QBH area heating, first check the collimator protection lens, if damaged, it should be replaced in time. If there is no problem with the protective lens, unplug the optical fiber to check the condition of the collimator lens and the fiber end.

　　2. Cutting head nozzle heating or focusing cavity heating: nozzle heating and focusing cavity heating, first check whether the protective glasses have obvious burn marks, or whether there are water vapor and oil stains on the protective glasses. If the protective lens has burning spots, replace the protective lens, and there is moisture or oil stains, you need to check the filter element of the air compressor, and require the user to replace the air filter element or repair the refrigeration dryer. If there is no problem with the protective glasses, you need to check the condition of the focusing mirror and the flow of the water cooling plate.

　　3. The focus position of the cutting head automatically changes when cutting: the focusing part changes automatically during cutting. Generally, the sealing ring of the protective lens is damaged and the air pressure enters the focusing cavity, causing the lens to move up, and the protective lens needs to be replaced Seal ring. If the sealing ring of the protective lens is invalid, you need to confirm whether the thickness of the protective lens used by the user has deviation. If the thickness of the protective lens is too thin, the sealing ring will not be sealed.

　　4. The cutting head blowing pressure is small, and the nitrogen gas flow is obviously insufficient: first pull out the protective frame and observe whether there is obvious foreign matter emerging from the gas ring position. Remove the sensor part of the cutting head, remove the air path cushion cover, install the protective mirror frame, press down the foreign matter at the air path port to blow out, and then restore the cutting head. If the air pressure cannot be increased after cleaning, you need to check whether the pipe on the machine tool drag chain is broken and whether there is any foreign matter inside the battery valve.

　　5. After the auto-focusing cutting head returns to the origin, the focus is not zero or returns to the origin error: First, you need to open the platform configuration tool, find the focus control parameter bar, and enlarge the positive and negative limits to 30, and manually control The focus is moved to the positive and negative limits. Whether the observation limit alarms or not, if the limit cannot be detected, the cutting head needs to be re-adjusted. If the limit position can be sensed normally, return to the origin, and then change the focus stroke to plus or minus 10, then it can be used normally.

　　 If there is a limit that cannot be sensed inside the cutting head, the return-to-origin alarm will cause the user to change the direction of returning to the origin and use another limit for the origin.

　　 The above are the faults and solutions frequently encountered in the laser head of the fiber laser cutting machine. The laser cutting machine has become increasingly popular in the metal processing and manufacturing process, and it needs to be used regularly. Check if there is any damage or dust on the surface of the cutting head, how is the stability of the cutting head when it is running under no load, whether there is jitter, this is what we need to pay attention to, we can also install an anti-collision protective shell on the surface of the laser cutting head , So as to play a better protective effect on the laser head.

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