Optical fiber laser cutting machine has won the trust of many metal processing enterprises with its irreplaceable processing advantages. However, although the efficiency of optical fiber laser cutting machine is very high, after a period of use, there will be some errors in the cutting accuracy, and the processed products may not achieve the desired cutting effect. This error is often caused by the change of focal length. Therefore, mastering how to debug the accuracy is a necessary knowledge to operate the laser cutting machine. The following small series will show you how to debug the accuracy of the optical fiber laser cutting machine:
1： When the light spot of the focus laser is adjusted to the minimum, the initial effect is established by spot shooting, and the focus position is determined by the size of the light spot effect. As long as we recognize that the light spot of the laser reaches the minimum, then this position is the best processing focus, and then we start processing.
2： In the first part of the laser cutting machine debugging, we can use some test paper and workpiece waste to spot judge the accuracy of the focus position. Move the position of the upper and lower laser head height, and the laser spot size will change in different sizes when spot shooting. Adjust different positions for many times, and find the smallest spot position to determine the best position of the focus and laser head.
3： After the installation of the optical fiber laser cutting machine, a scribing device will be installed on the cutting nozzle of the numerical control cutting machine, and a simulated cutting figure will be drawn through the scribing device. The simulated figure is a 1m square. A circle with a diameter of 1m is built in. Diagonal lines are drawn on the four corners. After drawing, use measuring tools to measure whether the circle is tangent to the four sides of the square. Whether the diagonal length of the square is √ 2, the central axis of the circle should bisect the sides of the square, and the distance from the intersection point of the central axis and the two sides of the square to the intersection point of the two sides of the square should be 0.5m. The cutting accuracy of the equipment can be determined by testing the distance between the diagonal line and the intersection point.
The above is our experience in the actual cutting process of the optical fiber laser cutting machine. The operator can carry out practical operation according to the above methods to verify.