Effect of Debris Accumulation on Machining Speed in EDM

This paper shows the effect of electrode jump height on machining speed and depth in deep machining for linear motor equipped electrical discharge machining. A new definition named "Machining speed break point" is introduced from the experiments. This new definition is then theoretically calculated from a proposed electrode jump and debris exclusion model, and compared with the experimental results. Additionally, an algorithm is developed to calculate the accumulation of debris in machining gap. The algorithm results showed that the debris concentration in gap rises suddenly before the machining speed break point.