锻压技术

基于五轴联动的曲面激光熔覆路径规划

英文标题：Path planning of curved surface laser cladding based on five-axis linkage

单位：（1. 江苏大学机械工程学院江苏镇江 212013 2. 无锡曙光精密工业有限公司江苏无锡 214145）

分类号：TN249；TH117.1

出版年,卷(期):页码：2025,50(4):165-172

摘要：

为提高曲面模具激光熔覆成形精度和质量，进行了基于五轴联动的激光熔覆加工，并采用了喷嘴轴线与曲面加工点法矢量重合的策略。首先，根据解析曲面特征采用曲面等距轨迹生成法，运用NURBS曲线对交线进行描述。然后，以激光焦深作为激光熔覆加工轨迹的弦高约束条件来获得插补点，通过NURBS曲面拟合熔覆表面并微分解析插补点加工法矢量。最后，进行五轴联动曲面激光熔覆实验，对实验获得的熔覆层进行宏观形貌、微观组织和力学性能分析。结果表明，曲面熔覆层形控和质量良好，验证了该路径规划方法的适用性。

In order to improve the forming precision and quality of laser cladding for curved surface die， laser cladding processing based on five-axis linkage was carried out， which adopted the strategy that the axis of nozzle coincided with the normal vectors of curved surface machining points. Firstly， the curved surface equidistant trajectory generation method was adopted according to curved surface features， and the intersection line was described by NURBS curve. Secondly， the laser focal depth was used as the chord height constraint condition of laser cladding processing trajectory to obtain the interpolation point， the cladding surface was fitted by NURBS curved surface,and the interpolation point processing normal vector was analyzed by differential analysis. Finally， the experiment of five-axis linkage curved surface laser cladding was carried out， and the macroscopic morphology， microstructure and mechanical properties of cladding layer obtained in the experiment were analyzed. The results show that the shape control and quality of curved surface cladding layer are good， which verifies the applicability of the path planning method.

基金项目：

基金项目:国家自然科学基金资助项目（51875263）；无锡市“太湖之光”科技攻关（产业化关键技术攻关）项目（WX0304-B010301220019PD）

作者简介：陈炜（1965-），男，博士，教授

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