多軸NC放電加工機による形状創成加工法に関する研究(第3報) : ワイヤフレーム電極による3次元形状創成加工法の理論的検討

概要

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A contouring EDM consisting of a wire frame electrode, a four-axis-controlled NC ED machine and an automatic programming system "APSET-II" has been developed to improve the productivity of bottom-stopped-machining. This paper deals with a newly developed automatic programming system "APSET-III" which controls the position and attitude of the wire frame electrode in the three-dimensional space. In the APSET-III, electrode shapes are defined in a two-dimensional tool definition co-ordinate system, and the electrode is controlled along drive curves and two directional-vectors. To generate three-dimensional curved surfaces, a six-axis-controlled NC ED machine is needed. To build this method, the authors propose that a two-joint robot arm be attached to the four-axis (X, Y, Z, C-controlled NC ED machine. The four-axis co-ordinates of the NC ED machine and the rotation angles of the robot arm can be obtained from calculating the drive curves and the two directional-vectors.
公益社団法人精密工学会の論文
1989-10-05