A common problem analysis of laser cutting machine

Laser cutting machine can not work normally, may be its internal components out of the problem or other reasons, the following will introduce general issues often. Applied very common metal processing technology of sheet metal cutting processing, but with the user on the machining efficiency and machining quality is higher and higher, so a technology revolution with the sheet metal processing, the laser cutting processing way. Laser cutting processing cutting knife, do not need to also won't produce the problem of tool wear; Processing does not produce deformation; Are quick in cutting speed, high efficiency, high degree of flexibility, short production cycle, narrow kerf width, easy operation, low labor intensity, no pollution, etc. Laser cutting processing parts, rapid prototyping is a precision cutting, also can realize automatic cutting layout, nesting. Currently abroad as long as the plate thickness is greater than 2 mm will use the laser cutting method, 30 - so many experts agree that the future 40 years will be laser cutting processing technology of the development of the golden week period. But the current laser cutting sheet metal, there are many problems unsolved. Laser cutting only a few cases can start on the edge of plate cutting, most of them are to be cut perforation technology, which means a small hole on the plate. Perforation method is first on the laser punching compound machine with the punch first rushed out of a hole, and then begin from the holes by laser cutting, drilling holes are generally with the method of blasting hole and pulse perforation, these two approaches are the laser energy is too concentrated in a small area, it is easy to burning in the processing area, causing hole deformation, affect the processing quality. Laser cutting low carbon steel, due to the fluctuation of laser focus position is not correct, the laser output power is not enough, the cutting speed too slow, cutting gas purity is not enough, the laser focus shifts, machine run time is too long lead to instability, these are easy to make the workpiece will be burr; In addition to a burr, when cutting low carbon steel, if the laser head nozzle loss, nozzle and laser joint loose thread will appear the phenomenon of abnormal spark, this phenomenon should immediately stop cutting, check the laser connection state, again for thread. Laser nozzle selection and processing does not match the plate thickness, laser laser cutting speed too fast will lead to not fully, so need to pay attention to the nozzle and processing board thickness matching problem, operation is to reduce the linear velocity control; You also need to pay attention to when cutting more than 5 mm carbon steel sheet need to replace the laser lens. In the process of laser cutting with laser beam machining, material after continuous laser irradiation in the center will form a pit, and then by the airflow with coaxial laser work quickly remove the molten material to form a hole, so the choice of the puncture point is very important. Above is now in the laser cutting processing problem, believe that as technology advances, will eventually be perfect to solve these problems