With the rapid development of industry, the fiber laser cutting machine has been widely used, but there will be some errors in the cutting accuracy of the fiber laser cutting machine for a long time, and the processed products may not achieve a certain effect. This error is often caused by the focal length. So it is also necessary to master and debug the cutting accuracy of the laser cutting machine. Let is take a look at the debugging method of the cutting accuracy of the fiber laser cutting machine:

1： When the light spot of the focus laser is adjusted to zui small, the spot is used to establish the initial effect of zui, and the focal length position is determined by the size of the light spot effect. As long as we recognize that the light spot of the laser reaches zui small, then this position is the best processing focal length of zui, and then 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 focal length position, move the position of the upper and lower laser head height, and the laser spot size will have different size changes when spotting. Adjust different positions several times, find out a small light spot position of zui to determine the focal length and the best zui position of the 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 pattern will be drawn through the scribing device, which is a 1m square. A circle with a diameter of 1m is built in, and diagonal lines are drawn at the four corners. After drawing, use a measuring tool to measure whether the drawn circle is tangent to the four sides of the square. Whether the length of the diagonal 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 and the intersection point.