基于复杂曲面分片建模的五坐标加工路径规划

采用曲面分片思想建立复杂参数曲面模型并进行了曲面特征分析。在曲面片域内基于环形铣刀几何特征的一般性，进行了精度误差分析，建立了等波高刀具路径规划策略，使刀具姿态随工件曲面的曲率而变化，并完成曲面片间的光顺整合。基于该分片算法，可有效改善复杂曲面的加工质量并能积极预防刀具与工件的干涉。

Research on tool path for five-axis NC machining based on fragmentary modeling of complicated surface

Fragmentation method is applied to create model of complicated parametric surface and in consequence,surface feature is analyzed.On the basis of the geometrically universal characteristic of torus end-mill tool,the precision error of the track is an- alyzed and the tool path generation algorithm on occasion of iso-scallop is given.Then the fair of the pieces is processed.Accord- ing to this algorithm,tool-pose changes along with the curvature of machining surface,which leads to the improvement of ma- chining quality as well as the prevention of interference between workpiece and tool.