PURPOSE: A machining wheel is provided to prevent the distortion of a disc-shaped body due to thermal transformation, since multiple through-holes provides a thermal expansion space in a disk body. CONSTITUTION: A machining wheel(1) is made of a metal disk body(10). Diamond abrasive particles(20) are attached on the surface of the edge of the disk body. The multiple through-holes(13) are formed on the edge of the disk body in which diamond abrasive particle is attached. The multiple through-holes pass through the upper and lower sides of the disk body.
