High precision and high accuracy is as the way of existence of optical 6000W fiber laser cutting machine fiber laser cutting machine, if the cutting precision of optical fiber laser cutting machine can not reach, the current domestic optical fiber laser cutting machine problems are mostly embodied in focus, so to improve the cutting precision of the laser cutting machine, and accurately adjust the focus of the optical fiber laser cutting machine, have what good method?
The first is the fiber laser cutting machine to adjust the focus of the inclined plate method, that is, with a vertical axis into an Angle of the inclined plastic plate to pull it horizontally, looking for the minimum fiber laser cutting machine laser beam as the focus.
Next is the optical fiber laser cutting machine to adjust the focus of the printing method, that is, let the cutting head of the optical fiber laser cutting machine move from the top down, laser beam printing on the plastic plate, printing the smallest diameter for the focus.
Secondly a bit more trouble focusing optical fiber laser cutting machine is of parallel light pipe method, although trouble is also a kind of commonly used methods, namely in the output of the optical fiber laser cutting machine with a beam expander of parallel light pipe processing, expanded beam after the beam diameter, divergence Angle smaller, so in cutting work within the scope of the proximal and distal focused beam size close to agreement before. The lower axis of an independent moving lens is added on the cutting head, and the FIBER laser cutting machine is two independent parts with the Z-axis that controls the distance from the nozzle to the material surface. Fiber laser cutting machine cooling, can use domain double temperature double pump chiller. When the machine tool table moves or the optical axis moves, the F axis of the beam moves from the near end to the far end at the same time, so that the spot diameter after the beam is focused remains consistent in the whole machining area.
Finally is the method of optical fiber laser cutting machine to adjust the focus of blue sparks, remove the fiber laser cutting machine cutting head nozzle, blowing air, will play on the stainless steel plate, laser makes the cutting head movement, down on maximize until blue sparks as the focus, so that we can calculate the focus, after cutting process according to different plate thickness corresponding focusing.
For the cutting machine with flying light path, the size of beam before focusing is different due to the divergence Angle of beam and the different length of time between the near end and the far end of cutting. The larger the incident beam diameter, the smaller the focal spot diameter.
The focus of the fiber laser cutting machine is adjusted, which is equal to improve the efficiency of the fiber laser cutting machine, and further it is to improve the production efficiency of the whole enterprise.