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在汽车覆盖件的激光加工中,一个覆盖件上的边界以及众多的大大小小的孔洞都可以用激光切割一次完成。如何使加工连续进行,一次完成一个覆盖件上的所有部分的切割工作以及合理安排加工轨迹的切割顺序是进行三维激光加工离线自动编程要解决的问题,它直接影响到汽车生产的生产效率。本文研究了三维激光加工激光头行走的特点,为了一次完成工件上所有孔、洞的切割工作,避免与工件发生碰撞,提出了激光头位姿在过渡轨迹和安全平面上的规划方法,同时利用神经网络方法和最短路径法对加工顺序进行合理安排,以提高加工效率。该方法用在作者开发的三维激光加工离线自动编程系统中,取得了满意的效果。
Laser processing of automotive covers, the borders of a cover, and the large number of large and small holes can be laser cut once completed. How to make the processing continuously, cutting all the parts in one cover at a time and arranging the cutting sequence of the processing tracks reasonably is the problem to be solved in the offline automatic programming of the 3D laser processing, which directly affects the production efficiency of the automobile production. In this paper, the characteristics of laser head walking in 3D laser processing are studied. In order to finish all the hole and hole cutting work in the workpiece and avoid the collision with the workpiece at the same time, the planning method of laser head pose on the transitional trajectory and safety plane is put forward. Neural network method and the shortest path method to process the order of reasonable arrangements to improve processing efficiency. The method is used in the author’s 3D laser processing offline automatic programming system, and achieved satisfactory results.