Patent ID: 8028687
Filing Date: 2011-10-04
Classification: B23D,B24D,B28D

Abstract:
1. A diamond tool comprising a plurality of cutting segments, wherein each of the segments has a single plate-shaped layer or a plurality of plate-shaped layers of diamond particles arranged therein, wherein the layers of diamond particles are arranged in the cutting segment such that cutting grooves formed on a workpiece by trailing layers of diamond particles are arranged between cutting grooves formed thereon by leading layers of diamond particles, respectively, in cutting of the work piece, wherein the cutting segments each are divided into at least two sections such that n layers of diamond particles are arranged in a leading section in a cutting direction and n′ layers of diamond particles are arranged in a trailing section in the cutting direction, where n′<=n, and wherein the layers of diamond particles in the leading section are arranged between the layers of diamond particles in the trailing section, respectively, in the cutting direction, by forming depressed portions on lateral sides of the segment by depressing lateral sides of the segment in a direction perpendicular to the cutting direction, wherein the layers of diamond particles in the leading section are spaced from each other, in a direction perpendicular to the cutting direction, by a distance less than or equal to a thickness of each layer of diamond particles in the trailing section, wherein the cutting segment has a high-concentration area and a low-concentration area in the cutting direction, the high-concentration area showing a concentration higher than an average concentration of the diamond particles, the low concentration area having no diamond particles, and at least one low concentration area formed on the leading section and the trailing section of the cutting segment.