Effect of Cathode Feed Mode on Electrochemical Machining of Diamond Hole

摘要

Diamond holes are typically produced with small corner radii and high surface quality. Depending onthe characteristics of the diamond structure, the influence of the tool-cathode feed mode on the diamondhole formation can be calculated by a numerical method based on analyzing the forming process of adiamond hole using electrochemical machining. The current density in the diamond-holeelectrochemical machining position changes depending on whether the tool cathode does a straight-lineor vibration feed. The effects of different vibration amplitudes and frequencies on the current density ofa diamond-hole surface are discussed. The results show that the vibration feed of the tool cathode isbeneficial for creating a uniform electric field in the diamond-hole electrochemical machining and foravoiding electric-field distortion. The three-dimensional morphology of the diamond-hole samplesobtained by electrochemical machining experiments is in good agreement with the theory. It was alsoverified that the tool-cathode vibration feeding can improve the accuracy of the diamond-holeelectrochemical machining.