Russian Federation
GRNTI 55.01 Общие вопросы машиностроения
BBK 345 Общая технология машиностроения. Обработка металлов
During EDM holes of small diameter portions of the lower electrode-tool bits are exposed to the side longer than the upper, which leads to increased errors resulting form the opening. The article analyzes the profile obtained by EDM holes. It is found that the taper value increases with machining depth. Experiments confirmed the adequacy of the methodology for determining the value of additional calibration pass, using the ellipse function. The data will improve the accuracy of dimensional electrical discharge machining of small diameter holes.
precision EDM, taper holes of small diameter, volumetric wear of the electrode-tool calibration run, trimming tool-electrode EDM depth.
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