Creation of Cross Section's Changing Holes by means of Electrical Discharge Machining Using a Tool Electrode with Posture and Position Controllable Function

研制了用常规加工方法无法加工的变截面孔--变截面孔的加工装置，并利用该装置研制了复杂变截面孔加工软件系统的重要组成部分之一。利用该装置和软件进行的加工实验结果表明，可以加工出预先设计好的形状复杂变化的截面孔。这证明了设备和软件的有效性。

This study deals with the development of the device for machining holes with variously changing cross sections, i.e., cross section's changing holes, which cannot be fabricated by means of conventional machining methods, and the formulation of one of the important parts constituting the software system for creating holes with complicatedly changing cross sections by making good use of the developed device. The results obtained in the machining experiments using the device and software show that the holes with complicatedly changing cross sections whose shape are previously designed can be created. This proves the effectiveness of the device and software.