Development of Electroforming Technique for Fabricating Electroformed Diamond Tool with High Grain Density

概要

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An electroforming technique that enables the fabrication of grinding tools with fine diamond grains and high grain density was developed. A plating rig was employed in which a cylindrical cathode connected to a stepping motor was covered by an acrylic jig with a groove of 2 mm width and 15 mm length. In the case where a discontinuous rotation technique was employed, electroforming was conducted simultaneously with the sedimentation of abrasive grains by stopping the cathode rotation when the groove rotated to the top position. In addition, sedimentation and electroforming were conducted under the rotational vibration of the cathode when the discontinuous rotation technique supported by rotational vibration was employed. The grain density of the coatings was successfully increased to 45 Vol% when the discontinuous rotation technique supported by rotational vibration was employed.
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