关键词: 复杂构件, 激光熔覆轨迹, 碰撞域, 干涉检测, 姿态修正

Abstract: Aiming at the problem that laser beam interferes with parts in the process of laser scanning of damaged surface for complex components,the interference detection and correction algorithm of laser trajectory for complex structural parts was proposed.On the basis of reverse point cloud data,the data structure of the expected track interpolation point was constructed.The collision region was established by normal projection according to the scanning trajectory,the non-interference laser beams were removed,and the possible interference points were roughly detected.The interference points were searched accurately by constructing the quadtree,the corresponding interferences were determined by considering the beam radius compensation error and computing the interference angle.Under the premise of satisfying the remanufacturing quality,the laser attitude was adjusted to convert the interference point into the effective point,and the cladding track model was optimized.The interference detection module was designed to realize a visual operating interface.The reliability and effectiveness of algorithm were verified by an example.

Key words: complex parts, laser cladding trajectory, collision region, interference detect, correct attitude