摘要
以整体叶盘叶片为研究对象,建立了叶片铣削加工三维有限元仿真模型,运用动态仿真分析方法,结合数控仿真加工无干涉刀具轨迹,分析研究了叶片表面残余应力分布情况及铣削参数对叶片加工表面质量的影响规律。分析结果表明:叶片表面应力分布均匀,只在两缘区域出现应力集中现象;叶片两缘区域表面残留高度值大于中轴区域;相同切削条件下,提高主轴转速和减小每齿进给量均有利于改善叶片加工表面粗糙度。该结果对后续优化叶片加工参数的研究及叶片加工表面质量的提高具有重要指导意义。
By taking blisk blade for the research object,a three-dimensional finite element simulation model for blade milling is established,Combined with the numerical control simulation manufacturing interference-free tool path,analyzed the distribution of stress and the influential laws of milling parameters for blade surface quality by using the dynamic analysis method.The result shows that the stress is well-distributed in the surface,and the stress concentration only occurs in the leading and trailing edge of the blisk blade.The surface roughness value of the two edges is higher than the medial axis region.Increasing the spindle speed and decreasing feed per tooth are favorable to improve the surface roughness under the same cutting condition.The result of study has the important guiding significance for further research on the optimization of cutting parameters and improvement of machining quality of blade.
出处
《机械设计与制造》
北大核心
2013年第4期176-178,182,共4页
Machinery Design & Manufacture
基金
中航产学研创新基金项目资助(CXY2010SH29)
关键词
整体叶盘叶片
有限元仿真
加工参数
表面粗糙度
Blisk Blade
Finite Element Simulation
Cutting Parameters
Surface Roughness
