Abstract: Disclosed is a diamond tool having a metal plate inserted therein. Between abrasive layers containing diamond particles is inserted a ferrous or non-ferrous metal plate having a wear resistance lower than that of the abrasive layers such that a concave groove is spontaneously formed during a cutting process, thereby reducing the contact load with a workpiece to thereby avoid vibration (wobbling) of a shank, and providing a discharge path for smoothly removing cutting chips and the cooling water. In addition, the content of abrasives and the wear resistance of bonding material are uniformly constituted so that the shrinkage rate does not need to be considered during sintering and the manufacturing process can be simplified, thereby reducing the manufacturing cost and improving the productivity therefor. Furthermore, the area of the metal plate can be controlled, thereby enabling an easy design conforming to the working conditions with a workpiece.

Abstract: The present invention relates to a cutting wheel with blanks which reduces vibration and frictional noise generated when a workpiece such as stone, steel concrete, asphalt, metal, ceramic, or wood is cut, and a method for manufacturing the same. There is provided a cutting wheel of which a wheel body is formed with at least one blank. The blank is shaped in a line with a variable width, and the blank is filled with noise absorbing material. According to the present invention, the noise and vibration is considerably decreased as compared with a general plane type cutting wheel and a conventional cutting wheel with blanks. In addition, the cutting wheel with blanks according to the present invention can absorb the noise and vibration as good as the sandwich type cutting wheel, and particularly, is considerably high in strength, and is inexpensive to manufacture with ½ to ? costs compared with the sandwich type cutting wheel.