摘要
为提高任意扭曲叶轮五轴整体铣制的加工质量和效率,在粗铣阶段,拟合出一个"加厚"的单一直纹面叶片来包络任意扭曲叶片,实现用侧铣来完全代替点铣加工;在半精加工阶段,对侧铣粗加工作出改进,选取符合条件的原设计任意曲面的型值线作为分界线,分段进行直纹面的拟合,实现分段侧铣,同时兼顾高效性和叶片成形面精确度要求。并以某型号叶轮为例,通过整体建模、数控编程以及实际加工验证了算法在实践中的可行性。
For the milling of arbitrary surface impellers, the segmentation method with flanking milling was proposed to improve the quality and efficiency. For rough milling, the arbitrary surface was replaced by just one fitted ruled surface,the flank milling was a good method to replace the point milling. For semi--finish milling, the primal surface was replaced by several needed ruled surfaces,using step flank milling to gain the satisfaction in model＇s nicety and machining efficiency. Model building,NC programming and machining of a real pump impeller were conducted to test the proposed method.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2010年第2期127-130,共4页
China Mechanical Engineering
基金
国家863高技术研究发展计划资助项目(2006AA05Z250)
关键词
叶轮机械
侧铣
任意曲面
直纹面
turbine blade
flank milling
arbitrary surface
ruled surface
