复合平面摆动展成电解加工整体构件异形面的成形分析及应用  

Shaping Law and Process Study on Combined Wobbling Feeds for Electrochemical Contour Evolution Machining Integral Component Parts

作　　者：朱永伟[1] 徐家文[2] 

机构地区：[1]扬州大学机械工程学院,扬州225001 [2]南京航空航天大学机电学院,南京210016

出　　处：《机械工程学报》2008年第12期280-286,共7页Journal of Mechanical Engineering

基　　金：中国博士后基金(2003034382);'十五'国防科技预研(41318.3.2.4)资助项目

摘　　要：各类新型航空发动机中大量采用整体结构件,其异形面加工一直是机械制造中的难点。提出整体构件异形面的复合平面摆动展成电解加工方法,用一次进给'电解'达到型面加工要求。分析复合平面摆动展成电解间隙动态过渡过程,进行成形规律分析;以整体涡轮大扭曲叶片型面为研究对象,优化复合摆动展成进给加工轨迹,设计有补液流场的薄片底板与阴极体的组合式阴极,进行复合摆动展成进给电解加工试验,一次进给电解同时去除叶片通道两面余量,达到精加工效果;验证此方法加工变断面整体构件在生产率、精度、成本等方面的技术优势,为复合平面摆动展成电解工艺的拓展应用建立基础条件。A lot of integral component parts with special-shaped surface are used in various new types of aeroengines. It is very difficulty for machining integral component parts. The electrochemical contour evolution machining combined with wobbly feeds is proposed for machining the surface profile in one feed. The dynamic transient process of electrochemical machining gap and the shaping law are analyzed. The surface profile of integral turbine with big-twisted blades is taken as the research object, and the multi-axis linkage movement feed tracks are optimized. A combined cathode with reasonable flowing fields is designed. The machining system is improved. Machining tests are carried out. The allowance on two sides of blade passage is removed by electrochemical machining in one feed, and which attains the effect of finish machining, thus verifying the technical advantages of this method in respect of productivity, precision and cost.

关 键 词：整体构件 异形曲面 成形规律 复合摆动进给 一次进给电解精加工 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]