Influence of Machining Conditions on Machining Characteristics of Micro-rods by Micro-ECM with Electrostatic Induction Feeding Method☆

Abstract This paper describes a machining method of micro-rod using electrochemical machining (ECM) with the electrostatic induction feeding method developed by the authors. The influences of the feeding directions of workpiece rod on the machining characteristics were investigated. Higher voltage amplitude was needed to keep the same feed speed with the radial feeding method due to the larger machining area, and longer micro-rod was easier to be machined with the axial feeding method, because the jetting of electrolyte into the surface gap was easy. The influence of pitting corrosion on the machining accuracy was insignificant with the radial feeding method, because the side of the micro-rod is machined at the same time.