型孔电解加工阴极优化试验研究  

Experimental Study On Cathode Optimized ECM-shaped Hole

作　　者：周超[1] 张永俊[1] 刘桂贤[1] 吴明[1] 姚冶冰 

机构地区：[1]广东工业大学机电工程学院,广东广州510006

出　　处：《电加工与模具》2016年第3期20-23,32,共5页Electromachining & Mould

基　　金：国家自然科学基金青年科学基金资助项目(51105080);广东省自然科学基金资助项目(S2011040003991)

摘　　要：为解决电解加工型孔的加工稳定性和形状精度等问题,建立了异形孔电解加工稳定过程中加工间隙数学模型,分析了工具阴极结构对加工区域和非加工区域的电场及其均匀性以及其对电流密度与加工效果的影响,通过优化工件结构改善了加工间隙内的电场分布,使工件形状精度显著提高,并进行相关试验对仿真结果进行验证。得出结论:在相同的电解加工参数下,工具电极的结构对工件的形状精度有着显著的影响,通过优化工具电极结构,改善加工间隙内的电场分布与电流密度,让加工间隙内的流场更为稳定,使工件侧壁垂直度提高,提高了电解加工的形状精度与加工稳定性。To solve the processing stability and shape precision electrochemical machining type holes and other issues, this paper established the hole electrochemical machining stability during machining gap mathematical model to analyze the tool cathode structure and the uniformity of the electric field processing region and non-processing areas and its impact on the current density and processing effects, improved by optimizing the structure of the electric field distribution of the workpiece machining gap, so that significantly improve the accuracy of the workpiece shape, and the relevant test to verify the results of the simulation. Concluded： under the same electrolysis process parameters, tool electrode structure has a significant influence on the shape accuracy of the workpiece,by optimizing the tool electrode structure, improve the electric field distribution and current density machining gap, so that the flow field inside the machining gap more stable, so that the workpiece sidewall verticality increase and improve the shape accuracy and process stability ECM.

关 键 词：型孔 电场 形状精度 数学模型 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]