Technological parameters of process of electroerosive piercing of microholes at different processing depths

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Boyko, A.F.^1 ; Blinova, T.A.^1 ; Duyun, T.A.^1

Belgorod State Technological University Named after V.G. Shukhov, Kostyukova St. 46, Belgorod

308012, Russia^1

关键词: Electrode tools;    Erosion products;    Interelectrode gaps;    Micro holes;    Process productivity;    Sharp increase;    Technological parameters;    Wear ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042013/pdf
DOI  :  10.1088/1757-899X/327/4/042013

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In the paper, results of the research of dependence of a process productivity and wear of an electrode-tool on the depth of its penetration in the workpiece during electroerosive piercing of microholes are set out. It has been established that up to the depth equal to ten diameters, the wear of the electrode-tool increases insignificantly. Then, at depths from 15 to 17 diameters of the processed hole, there is a gradual increase of the wear ratio up to 90-100%. A sharp increase of the wear occurs at depths over 15-20 diameters of the processed hole. The process productivity during penetration of the electrode-tool reduces monotonically from 25-40 μm/s (at the beginning of the process) to 7-7,5 μs/s (at a depth of 15-17 diameters of the processed hole), which is explained by the wear increase of the electrode-tool and deterioration of conditions of erosion products evacuation from the interelectrode gap. It has been established that the greater wear and lower productivity correspond to the electrode-tool of less diameter, which is explained by the fact that electric modes of processing for all diameters were set as similar.