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目前,大部分的商用计算机辅助制造(CAM)软件系统在针对叶轮零件的刀具轨迹规划方面存在效率和性能上的欠缺。针对上述问题,本文开发了一个针对直纹面叶轮刀具轨迹规划专用软件。文中提出了直纹面叶轮整体刀具轨迹规划算法,拟合了直纹面叶轮叶片的型值点为样条曲线,并用这些曲线构建了直纹面叶轮的模型。接着,计算了刀轴矢量和自由曲面轮毂面的交点。解决了交点计算中的歧义现象、短切削刃刀具切削宽叶片等问题。最后,使用整体刀位计算方法规划了整体叶轮的刀具轨迹。利用五坐标数控铣床对一个叶轮零件进行了仿真和切削实验,实验表明上面提到的算法是切实可行的。
Currently, most commercial computer-aided manufacturing (CAM) software systems lack efficiency and performance in toolpath planning for impeller components. In response to the above problems, this paper developed a software aimed at ruled plane impeller tool trajectory planning. In this paper, the algorithm of locus planning for ruled face impeller is proposed. The model points of ruled face impeller are fitted to spline curves, and the model of ruled face impeller is constructed by these curves. Next, the intersection of the tool axis vector and the freeform hub face is calculated. Solve the intersection point of the calculation of ambiguity, short cutting cutting blade cutting blade and other issues. Finally, the tool path of the whole impeller is planned using the whole cutter calculation method. The simulation and the cutting experiment of an impeller part are carried out by using the five-coordinate numerical control milling machine. Experiments show that the above-mentioned algorithm is feasible.