Fiber laser cutting machine is a cutting equipment that has developed very rapidly in recent years, and has been widely welcomed in various industries. However, after a long time of use, optical fiber laser cutting will produce more or less mechanical system displacement, resulting in a decline in the quality of cutting products. So how to calibrate the mechanical system is particularly important. The quality of the mechanical system calibration directly affects the product effect.
The two guide rails of the axis are not parallel to each other. Use laser to light the correction axis until the light spots at both ends of the axis are consistent; Then move the laser head to the near end of the shaft; Beam back and forth in the direction of the axis until the light spot at the remote and near ends of the X axis is in the same direction; Then light the laser head at the four corners of the table to judge whether the light spot at the lower right corner is consistent with the other three light spots The light spot at the lower right corner is higher; Take the lower light spot as an example to illustrate: first loosen the four screws between the aluminum and the fixed block under the left guide rail (i.e. the large screws at both ends of the guide rail), add a small iron sheet between the aluminum and the fixed block at the lower left corner, raise the aluminum and tighten the screws Repeat one more step to check whether the light spot is consistent For example, add a small iron plate at the bottom, and repeat steps 3 and (until the four light spots are consistent up and down. If the table top is not horizontal, put a flat plate of the same size as the table top, and then put a small square of about 5mm on it.
1. Move the laser head to one corner of the table top, move the nozzle up and down to the surface of the small square, and then move the laser head to the other three corners of the table top. Measure the distance between the nozzle and the flat plate with small square respectively. If the height is different, find one of the low corners as the benchmark;
2. Loosen the screws that fix the table top, knock down the table top slowly at the screw position in turn, and then move the laser head to this position. Test the distance between the nozzle and the plate with a small square. If it is not the same height, continue to knock down and test its height until the height of this place is the same as the reference point.
3. Move the laser head to other places, repeat step 2) until the height of the whole table is the same as the reference point, and tighten all screws used to fix the table. To adjust the rightness, cut a rectangle of the same size on a flat plate or cardboard and measure its diagonal line. The line from the top right corner to the bottom left corner of line A, and the line from the top left corner to the bottom right corner of line B shall be subject to line B,
If the length of line A is more than 3MM (taking 3MM as a tooth position), loosen the timing belt in the Y-axis direction on the right side of the machine, jump the corresponding number of belt teeth to make the transverse deflection downward, then tighten the belt, adjust the optical path to within 3MM, then loosen the adjusting rod at the upper end of the timing belt on the right Y-axis (that is, by the laser tube), lock the screw of the adjusting rod at the lower end, fine-tune the optical path, and repeat this several times until the diagonal is the same length.