曲面零件的激光熔覆路径规划

Path Planning of Laser Cladding for Curved Surface Parts

为了提高曲面零件的熔覆质量,根据激光熔覆的工艺特性对曲面零件进行了路径规划。对熔覆实验设备进行了简单的介绍,建立曲面零件模型。根据模型提出一种基于切平面法的路径生成方法,并利用熔覆道搭接率来确定切平面间距离;通过分析有效加工离焦量来计算步长大小,得出轨迹上的插补点集,进而分析加工控制点,并用偏置法得到枪头的位置与姿态;通过熔覆加工工艺实验进行验证,得到表面质量良好的熔覆层,从而验证了轨迹规划方法的合理性。

In order to improve the laser cladding quality of curved surface parts, the path planning of laser cladding is carried out according to the technical characteristics of laser cladding. The laser cladding equipment is introduced, and the model of cured surface parts is established. According to the model, an orbital path generation method based on the cutting plane method is proposed and the distance between cutting planes is determined by the cladding road overlap ratio. The effective processing defocusing amount is analyzed to calculate the processing step to obtain the interpolation point sets on the track and locate the processing control points. The offset method is used to get the position and attitude of the laser tip. The proposed method is verified by experiments with a high surface cladding quality, which proves the rationality of the path planning approach.