電極運動制御装置を用いた一定曲率曲がり穴放電加工

概要

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The study deals with the development of a new method to machine the curved holes with a constant curvature by means of the apparatus developed by the authors. It is strongly required to machine curved holes for the fabrication of water channels built in a mold. This is due to the achievement of their efficient arrangement, which can improve the productivity in molding by shortening the solidifying time in a molding cycle. However, the efficient arrangement cannot be realized since water channels are generally made by drilling, which causes their shape to be polygonal line. To meet the requirement, the authors developed the device which can fabricate curved holes by means of electrical discharge machining. Though the device is capable of machining various-shaped curved holes, the target shapes were not obtained since the control method and the utilized software were simple. In the study, therefore, a new method employing a vision sensor and its processing software are developed to control the device so skillfully that the curved holes with a constant curvature can be machined. From the experimental results, it is found that the developed control method has ability of accurately fabricating constant curvature curved holes.
2005-11-05