Journal of Guangdong University of Technology ›› 2020, Vol. 37 ›› Issue (04): 75-78.doi: 10.12052/gdutxb.190135

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A Research on EDM Drilling High Precision Blind Hole

Liang Shi-yong, Yu Zhao-qin, Huang Wen-bin, Xiao Cheng-long   

  1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2019-10-20 Online:2020-07-11 Published:2020-07-02

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Abstract: Aiming at the problem of electrode wear in electrical discharge machining(EDM), a drilling method for axial compensation of electrode wear is proposed. A series of blind holes of different intended depths are drilled on the micro-EDM machine (Sarix SX-200hpm) using the proposed method and they are compared with holes drilling without compensation. The brass and copper are employed as tool electrode and the workpiece is Titanium alloy (TC4). As a result the depth of blind hole processed by this method can be close to the expected and the morphology of blind hole processed with the copper electrode is better.

Key words: EDM drilling, axial compensation, high accuracy

CLC Number: 

  • TG661
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