模板阴极电解加工群孔的成形规律

Shaping Law of Matrix-Hole by Electrochemical Machining with Template Cathode

采用模板阴极进行电解加工群孔试验,探讨了模板阴极电解加工的成形规律,建立了反映实际加工过程的数学模型,并考虑非线性电解液的影响,利用参数化有限元分析技术对蚀除过程进行模拟和数值求解,最后进行了相应的试验验证.结果显示:仿真蚀除的深度和直径与实际加工的深度和直径相符;采用模板阴极双面电解加工方式可减小孔的锥度和缩短加工时间;模板阴极电解加工方式可低成本、高效率地在金属薄板上加工出群孔结构.

In this paper,first,template cathode is applied to the electrochemical machining of matrix-hole,and the corresponding shaping law is investigated.Next,a mathematical model to describe the actual machining process is established.Then,by considering the effects of nonlinear electrolyte,the parametric finite element method is adopted to simulate and numerically analyze the erosion process.Finally,some experiments are performed to verify the proposed model.The results indicate that the simulated erosion depth and diameter accord well with the actual ones,that the two-side electrochemical machining with template cathode helps to reduce the taper of the matrix-hole and shorten the machining time,and that the electrochemical machining with template cathode helps to obtain matrix-hole on metal sheet with low cost and high efficiency.