After using the fiber laser cutting machine for a period of time, the cutting accuracy will have certain errors, which are often caused by the change of focal length. Therefore, mastering how to adjust the accuracy is a necessary knowledge to operate the laser cutting machine. Now let’s give you a brief introduction.
(1) When the light spot of the focus laser is adjusted to a smaller point, the spot is used to establish the effect, 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 the minimum, then this position is the best processing focal length, and then we can 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 to find out the position of the small light point to determine the focal length and the 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. Diagonal lines are drawn at the four corners. After drawing, use a measuring tool to measure whether the circle drawn is tangent to the four sides of the square. Whether the length of the diagonal of the square is √ 2 (the data obtained by the square root sign is about 1.41m), 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. This is a down-to-earth experience!