1, first of all, according to the size of the spot to judge, as long as the laser spot is at the minimum, and the spot is in the most central position, then this position is the best processing focal length, this time can be processed.
2. When the laser cutting machine is commissioned, we can use the debugging paper or scrap to do the experiment, move the position of the upper and lower laser head heights, and the laser spot size will have different size changes when it is shot. Adjust the position multiple times to find the smallest spot position to determine the focal length and the optimal position of the laser head.
3. After the laser cutting machine is installed, a scribing device is installed on the cutting nozzle of the CNC cutting machine, and a simulated cutting pattern is drawn by the scribing device, and the simulated figure is a square of 1 m. A circle with a diameter of 1m is built in, and the four corners are diagonally drawn. After the stroke is finished, the measuring tool is used 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 opening the root number is about: 1.41m), the central axis of the circle should be equally divided into the sides of the square, and the point where the central axis intersects the two sides of the square to the intersection of the two sides of the square The distance should be 0.5m. By testing the distance between the diagonal and the intersection, the cutting accuracy of the device can be judged.
In addition to the advertising word laser cutting machine precision affects the quality of cutting, what other factors affect? Dema experts talk about the factors affecting the cutting quality of the advertising word laser cutting machine?
1. Laser beam quality. In fact, the beam generated by the laser has a certain divergence angle, so we will form a certain taper when cutting the workpiece with the laser cutter, so the quality of the laser beam will have a direct and important impact on the cutting quality.
2. The difference in cutting materials. Different cutting materials produce different cutting qualities. in
When laser cutting is performed, we will see that the spot moves quickly on the workpiece. The smaller the spot, the better the quality of the cut. In addition to the laser beam quality will affect the spot, the material of the processed plate will also affect the size of the spot. For example, materials such as copper with high reflectivity are not conducive to the formation of spots, so copper is highly demanding for laser cutting machines.
3. The thickness of the material. In the case of the same material, the greater the thickness of the part to be cut, the wider the slit and the lower the precision, and the cut edge is not very smooth.
4, cutting speed. Cutting speed is very important for perfect cutting. If the other parameters are the same, the cutting speed is too slow or too fast to achieve the best cutting effect. Too slow, the roughness of the slit may be large, and the speed can reduce the roughness, but the speed is too fast, and the phenomenon may not be penetrated. So controlling speed is crucial.