三头进给电解加工叶片流场特性  

Character of Flow Field on Turbine Blade with 3-Electrode Feeding Method in Electrochemical Machining

作　　者：徐正扬[1] 朱荻[1] 王蕾[1] 史先传[2] 

机构地区：[1]南京航空航天大学机电工程学院,南京210016 [2]江苏工业学院机械工程系,常州213016

出　　处：《机械工程学报》2008年第4期189-194,共6页Journal of Mechanical Engineering

基　　金：国家教育部博士点基金(20050287020);航空科学基金(04H52055)资助项目

摘　　要：为合理利用流场因素对叶片电解加工的影响,提高叶片电解加工的精度和表面质量,结合自行研制的新型三头进给叶片电解加工机床,建立电解加工流场的数学模型,设计新的'双向进液'的流动形式及适应该流动形式的电解加工夹具,分析气泡率、温度、压力、流速等因素对电解加工的影响。进行叶片电解加工试验,试验表明,流场设计合理,有利于保证加工的稳定性,提高叶片加工质量,并可实现叶片叶身、缘板的全方位电解加工。For making full use of the influence of flow field on blade electrochemical machining （ECM） and improving the accuracy and surface quality of blade, a mathematical model of electrolyte flow in the interelectrode gap is presented and the calculated distributions of several flow parameters such as volumetric gas-phase concentration, temperature, pressure and velocity of electrolyte are also given. A new electrolyte flow mode of＂dual directional inlets＂ flow mode is developed for using the new 3-electrode feeding ECM tool of turbine blade. The clamping fixture for blade machining which applies the flow mode is also designed. The experimental investigations are carded out in order to evaluate the rationality of the designed flow field and the results reveal that the accuracy and surface quality of blade are enhanced.

关 键 词：电解加工 发动机叶片 流场 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]