High-frequency-vibration-assisted electrolytic grinding method and device therefor

A high-frequency-vibration-assisted electrolytic grinding device comprising:

• a grinding stone having non-conductive micro abrasive grains with grain sizes of less than #400 in accordance with the JIS R6001 standard of grinding stones for precision polishing projecting from its surface, which comprises a conductive binding material;
• a vibrator to transmit high-frequency vibration to at least one of the grinding stone and a work, wherein the high-frequency vibration is transmitted in an axial direction of the grinding stone;
• a holding mechanism that is configured to hold the work in a position such that a portion of the grinding stone extends into an opening in the work when the high-frequency vibration is transmitted in the axial direction of the grinding stone;
• and
• an electrolysis regulator to perform electrolytic grinding by applying a voltage between the grinding stone and the work through an electrolytic solution, wherein
• the device is configured to perform electrolytic grinding while transmitting the high-frequency vibration to at least one of the grinding stone and the work so as to induce or promote an electrolytic reaction between the grinding stone and the work when a distance between the grinding stone and the work, which is regulated by projecting lengths of the micro abrasive grains from a base of the grinding stone, is set to less than 0.02 mm.