细分曲面多轴精加工刀具轨迹生成算法研究  

Research on Tool Path Generation Algorithm for Multiaxis Finish ing of Subdivision Surface

作　　者：原恩桃[1] 邵兵[1] Yuan Entao;Shao Bing

机构地区：[1]上海电机学院机械学院,上海201306

出　　处：《机械制造》2019年第12期11-13,共3页Machinery

摘　　要：在细分曲面造型技术日益盛行的情况下,以Catmull-Clark细分曲面为例,研究了细分曲面多轴精加工刀具轨迹生成算法。采用二阶差分方法计算满足加工精度要求的细分次数,并对细分后的网格进行等距。根据等距网格各顶点的变形因子,得到变形后的网格。获得截面数据点,并逆变形至原始空间。采用面积均值方法,计算得到刀位点的位置及刀具轴线方向矢量。通过三轴加工与所研究算法四轴加工进行对比,确认所研究算法加工误差较小,更为精确。The subdivision surface modeling technology is increasingly popular.Taking the Catmull-Clark subdivision surface as an example,the tool path generation algorithm for multi-axis finishing of subdivision surface was studied.The second-order norm was used to calculate the number of subdivisions that met the requirements on processing accuracy while making the subdivided grids equidistant.The deformed mesh was obtained according to the deformation coefficients of the equidistant mesh vertex.The obtained cross-section data points were inversely transformed into the original space.The mean area method was used to calculate the positions of CL points and the cutter normal vectors.By comparing the three-axis machining with the four-axis machining under investigated algorithm,it is confirmed that the processing error under the investigated algorithm is smaller and more accurate.

关 键 词：细分曲面 精加工 刀具轨迹 算法 

分 类 号：TH162[机械工程—机械制造及自动化]