复杂陡峭曲面分段式螺旋刀路的设计

针对现有螺旋刀轨在实际应用中限制较多、无法直接应用于复杂陡峭曲面加工的局限,提出一种分段式螺旋刀轨。通过对流线驱动刀轨、曲面驱动刀轨和螺旋复合曲线驱动刀轨的有机整合,对复杂陡峭曲面的不同部位采用不同的加工方式,工艺针对性更强。同时,对作为流线的边界曲线采用提取、光顺和替换的方式进行重构,使得流线驱动螺旋刀轨更加光顺。实际加工和VERICUT软件仿真的结果表明,分段式螺旋刀轨能够满足高速加工刀轨连续光顺的要求,在生产中可操作性强。

Design of Segmented Spiral Toolpath for Complex Steep Surface

In order to conquer the limitation that current spiral toolpaths can't be used directly in cutting complex steep surfaces,a method based on segmented spiral toolpaths is proposed.By integrating streamline,curved surface and piral composite curve driven toolpaths,a different machining mode for different part of a complex steep surface is applied.Meanwhile,boundary curves as streamlines are reconstructed through extracting,smoothing and substituting to get smoother streamline-driven spiral toolpaths.Practical machining and VERICUT emulation show that this method can meet the toolpath smoothing need for high speed machining.