This paper presents an algorithm of generating three kinds of tool paths and a formular of calculating tool center paths when machining parts with cylindrical end-milling cutter.

本论文介绍了生成三种刀具轨迹的算法，并且给出用立铣刀代替球铣刀加工实体零件时刀具中心轨迹的计算公式。

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The rough milling region of the open blisk tunnel is determined by generating the ruled envelope surface of the blades offset surface, and the algorithm.

通过叶盘叶片偏置面的直纹包络面逼近，确定叶盘通道粗加工区域，给出了四坐标插铣刀位轨迹生成算法。

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The results show that the channel region division and the ruled envelope surface generating can be solved by this approach, and the slot plunge milling of closed blisk can be achieved effectively.

研究结果表明：该方法能解决闭式整体叶盘通道插铣区域划分和直纹包络面生成问题，可有效实现闭式整体叶盘的五坐标开槽粗加工。

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