Research on Accuracy and Localization Characterization of Pulse Electrochemical Micromachining Based on Equivalent Physical Model

doi:10.3901/JME.2024.05.378

Abstract

Abstract: To solve the problem of complex multi-field coupling model of pulse electrochemical micromachining and challenging to quantify the localization, an equivalent physical model was established based on the electrode/solution GCS double electric layer model. Using the equivalent physical model, the electric double layer polarization voltage and the transient response law of the equal current are analyzed. Two methods to improve the precision of pulse electrochemical machining are obtained: shortening the pulse width and controlling the polarization voltage. The mechanism of the two methods is revealed respectively, and the accuracy prediction equations are established. According to the decomposition voltage characteristics of the workpiece, define the boundaries of the anode processing area and the overcut area. By studying the variation law of the polarization peak voltage with the electrode spacing, the polarization peak voltage difference in the processing area is used to describe the electrolysis localization, and a mathematical model of the localization parameters is established. Numerical simulation analysis of machining parameters affecting localization was carried out using Matlab, and the theoretical analysis results are verified by the microhole electrochemical machining experiment.

Key words: pulse electrochemical machining, equivalent model, localized representation, simulation analysis, precision prediction

CLC Number:

TG662

ZHAO Chuanjun, WANG Jipeng, XU Lizhong. Research on Accuracy and Localization Characterization of Pulse Electrochemical Micromachining Based on Equivalent Physical Model[J]. Journal of Mechanical Engineering, 2024, 60(5): 378-389.

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