| 摘要 |
PURPOSE: A super abrasive tool and a manufacturing method are provided to maintain sufficient protrusions of super abrasive grains, to cause no releasing of the grains or loading, and to have excellent cutting ability. CONSTITUTION: A super abrasive tool is composed of scattered super abrasive grains(1) fixed on a working surface with a bond layer(2). The bond layer has a flat surface and block-shaped protrusions(3). Each block-shaped protrusion has one grain, and the average height from the flat surface to the top of the grain is in a specific range. A process for producing the super abrasive tool comprises forming in a spacer(5) holes(7,9) having a cylindrical portion having a diameter smaller than the average diameter of grains at the lower face and a portion having a diameter increasing to a specific value at the upper face, placing one grain in each hole, fixing the grains by forming the bond layer on the upper face of the spacer, and removing the spacer. |
