数控展成电解加工整体叶轮运动轨迹分析  

Analysis of the Movement Path of NC-electrochemical Contour Evolution Machining of an Integral Impeller

作　　者：吴建民[1] 徐家文[2] 

机构地区：[1]上海工程技术大学机械工程学院,上海201620 [2]南京航空航天大学机电学院,南京210016

出　　处：《机械科学与技术》2010年第10期1417-1419,1425,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：十一五国防预研项目

摘　　要：在整体叶轮扭曲叶片型面加工方法中,数控展成电解加工展示了其优势。笔者针对某型号航空发动机整体叶轮的加工,首先阐述了利用直纹面拟合扭曲型面的方法,然后通过对四轴数控展成电解加工过程的分析,通过采用等效平面开环运动链,利用解析法计算出工件在加工程序段中的进给位移量。通过工艺试验结果,证明解析法是可行的。Among the current methods for machining distorted blade surface of an integral impeller,the NC-Electrochemical Contour Evolution Machining（NC-ECCEM） has shown technological advantages.Aiming at the machining of an integral impeller used by an aero-engine,we describe the fitting of the distorted blade surface with ruled surface.Then four-axis NC-ECCEM machining process is analyzed and the movement of the impeller is studied by using equivalent open-loop plane motion link,and the feed displacement of every program segment is calculated by analytical solution.Through comparing two results which are obtained respectively from analytical solution and geometrical solution,the comparative effectiveness has proved that analytical solution is useful for calculating feed displacement.

关 键 词：数控 展成 电解加工 整体叶轮 运动 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]