采用NEL-A系列国产轴快流CO2激光器与SLCM-1225数控激光切割机联机切割模切板,研究了模切板割缝与板面不垂直问题的成因。运用几何光学原理对激光束入射到聚焦镜(凸透镜)的几种可能路径进行了讨论,分析认为设备在使用过程中造成光路的微小偏差是引起割缝与板面不垂直的主要原因,并提出可以通过调节聚焦镜和喷嘴相对于光路的位置来实现模切板割缝与板面垂直度的调整。实验结果表明,聚焦镜的水平位置调整可以改变激光束能量对称中心线在聚焦镜上的入射位置,从而改变经过聚焦后的光束能量中心线的方向,进而改变模切板割缝与板面所成的角度。 Using NEL-A series of domestic shaft fast flow CO2 laser and SLCM-1225 CNC laser cutting machine online cutting die cutting board, die cutting board cutting and board is not vertical cause of the problem. Several possible paths of laser beam incident on the focusing lens (convex lens) are discussed based on the principle of geometrical optics. The analysis shows that the slight deviation of the optical path caused by the equipment during the operation is the main reason for the non-perpendicularity between the kerf and the surface. You can adjust the position of the focusing mirror and the nozzle relative to the optical path to achieve the die board kerf and plate surface perpendicularity adjustment. The experimental results show that the horizontal position adjustment of the focusing lens can change the incident position of the energy symmetry center line of the laser beam on the focusing lens so as to change the direction of the energy center line of the focused beam and change the gap between the cutting board and the board surface Into the angle.