复杂曲面五坐标数控铣削表面粗糙度预测的关键技术研究  

作　　者：刘牧[1] 杨茂奎[1] 霍颖[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《机械制造》2005年第11期12-15,共4页Machinery

摘　　要：针对CAD/CAM复杂曲面数控加工刀位点曲率与走刀行距关系进行分析,给出了不同刀具路径下走刀行距的计算方法,并且对影响表面粗糙度的因素进行了讨论,该方法可用于对表面粗糙度的一个范围进行预测。并提出一种基于主曲率匹配的等残留高度刀具路径规划改进算法,该方法能够提高加工效率,改善加工表面粗糙度。The relationship between the surface curvature at the CL and the path-interval in NC machining of sculptured surface in CAD/CAM is analyzed, the calculation formula of path intervals of different tool-paths given and the factors to influence the surface roughness discussed. This method can be used for predicting the range of surface roughness. Based on the principal curvature match, an improved tool-path planning method is presented so as to raise the work efficiency and ensure the quality of machined surface.

关 键 词：表面粗糙度预测 五坐标数控铣削 复杂曲面 残留高度 刀具路径 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术]