The Effect of High Frequency Pulse on the Discharge Probability in Micro EDM

1st International Workshop on Materials Science and Mechanical Engineering

材料科学;机械制造

Liu, Y.^1 ; Qu, Y.^1 ; Zhang, W.^1 ; Ma, F.^1 ; Sha, Z.^1 ; Wang, Y.^2 ; Rolfe, B.^2 ; Zhang, S.^1

School of Mechanical Engineering, Dalian Jiaotong University, Dalian

116028, China^1

School of Engineering, Deakin University, Geelong

VIC

3220, Australia^2

关键词: Discharge probability;    Distribution patterns;    Electric field intensities;    Electric-field intensity distribution;    Electrical discharges;    Electrical parameter;    Influencing parameters;    Micro-electric discharge machining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/281/1/012031/pdf
DOI  :  10.1088/1757-899X/281/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

High frequency pulse improves the machining efficiency of micro electric discharge machining (micro EDM), while it also brings some changes in micro EDM process. This paper focuses on the influence of skin-effect under the high frequency pulse on energy distribution and transmission in micro EDM, based on which, the rules of discharge probability of electrode end face are also analysed. On the basis of the electrical discharge process under the condition of high frequency pulse in micro EDM, COMSOL Multiphysics software is used to establish energy transmission model in micro electrode. The discharge energy distribution and transmission within tool electrode under different pulse frequencies, electrical currents, and permeability situation are studied in order to get the distribution pattern of current density and electric field intensity in the electrode end face under the influence of electrical parameters change. The electric field intensity distribution is regarded as the influencing parameter of discharge probability on the electrode end. Finally, MATLAB is used to fit the curve and obtain the distribution of discharge probability of electrode end face.