摘要
为了提高曲面上激光增材质量,通过调整光斑面积使曲面获得特定能量的激光,调整机器人路径并寻优得到最优能量输入位置.同时,在多道扫描期间对激光路径进行合理规划,并确定了两离散点光束轴线和曲面法向间的最优夹角,根据光斑面积阈值搜索得到插补点,对提高曲面激光增材质量具有实际指导意义.
Abstract
In order to improve the quality of laser additive on a curved surface,the laser additive process was completed by using a robot to control the surface spot area.By adjusting the spot area,the surface can obtain the laser with specific energy,adjust the robot path and search for the optimal energy input position,and make reasonable planning for the laser path during the multi-scanning period.The results show that the smooth edge structure can be obtained at 5 mm defocus,and the non-inclusion cladding layer with excellent quality can be obtained.When the space angle is increased,the hardness curve value decreases,the plastic deformation forms greater grain boundary resistance,and the hardness is greater when the grain is refined.In this study,the interpolation points are obtained according to the spot area threshold,which has a good practical guiding significance for improving the surface laser additive quality.
NETL
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万方数据