基于单个刀位下刀具包络曲面的三阶近似模型,提出了非球头刀宽行五轴数控加工自由曲面的刀位规划新方法.该方法通过优化刀具的前倾角和侧倾角使得在刀触点处刀具包络曲面与设计曲面达到三阶切触,适用于任意的回转刀具,并且可以自然地处理无干涉约束、机床工作空间约束以及刀具路径光顺性约束.圆环刀加工螺旋面的仿真实例表明该方法可以显著增大加工带宽,提高加工效率. Based on the third-order approximation model of tool envelope surface under a single tool bit, a new method of tool position planning for free-form surface with wide-line and five-axis NC machining of non-ball-nose tool was proposed. By optimizing the tool rake angle and roll angle, Contact at the tool envelope surface and the design surface to reach the third-order touch, for any rotary tool, and can naturally deal with no interference constraints, machine tool space constraints and tool path compliance constraints. Ring cutter processing spiral surface The simulation example shows that this method can significantly increase the processing bandwidth and improve the processing efficiency.