闭式整体叶盘五坐标插铣刀位轨迹规划

针对闭式整体叶盘通道开槽工艺问题,研究了叶盘通道五坐标开槽插铣加工方法。进行了闭式叶盘通道可加工性分析,给出了通道加工区域划分方法;基于最小面积原理研究了叶盘插铣通道边界最佳直母线求解算法,分别针对叶片曲面及叶盘内外环面,提出了通道偏置直纹包络面的生成方法,给出了闭式整体叶盘五坐标插铣刀位轨迹。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。

5-axis Plunge Milling Path Planning of Closed Blisk

With regard to the slot process of closed blisk, a 5-axis slot plunge milling method of closed blisk is studied. First, this article analyzes the machinability of blisk channel and proposes the channel region division method. Then, the algorithm to solve the best ruled generatrix of plunging milling channel boundary is presented based on the least area principle. The method is addressed to generate the ruled envelope surfaces in view of blade-offset-surfaces and internal and external ring-offset-surfaces, respectively. 5-axis plunge milling tool path of closed blisk is presented finally. 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.