Departmental Bulletin Paper 電解加工による小径曲がり穴加工
デンカイ カコウ ニ ヨル ショウケイ マガリ アナ カコウ
Machining of Small Curved Hole Using Electrochemical Machining Process

内山, 光夫  ,  永井, 公義  ,  角田, 謙人  ,  澤田, 健斗

59pp.13 - 19 , 2016-03 , 関東学院大学工学会
A new method of curved hole processing for cooling jackets of metal molds is proposed. This machining technique is characterized by a self-processing electrode capable of following the shape of the curved hole to be machined. This paper describes a design optimization of tool structure in the electrochemical curved holes machining method and the result of machining experiments. The curvature of the hole can be determined by the tilt angle of the electrode tip attached to the end of the tool. The tool design was optimized by a numerical analysis of the electrostatic field in the working gap to simplify the tool structure and to obtain a machining stability. The tool for small hole newly developed has a simple structure composed of a flexible tube and cylindrical electrode tip. Machining tests showed that short circuiting can be avoided and that the calculated removal volume distribution agreed with the form of holes obtained from the experiment.

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