CUTTING DISK FOR FORMING A SCRIBED LINE

摘要

A cutting disk is provided for. forming a scribed line on a surface of a body or object. The cutting disk comprises a disk shaped body (10) having a peripheral portion having first and second circumferentially extending tapered surfaces (18,20) that converge radially outwardly. The peripheral portion defines a scribing edge (22) with adjacent raised (30) and recessed (26) circumferentially extending cutting elements. A plurality of outwardly extending grooves (24) are formed in the first and second tapered surfaces (18, 20), and the outer ends of opposed- grooves (24) in the respective tapered surfaces (18, 20) being aligned to define between them the recessed (26) cutting elements. As a result, the scribing edge (22) defined by the cutting disk is a continuous sharp edge having alternating raised (30) and recessed (26) cutting elements, aligned circumferentially with one another. The cutting disk can be manufactured ' from sintered or cemented diamond grit, or other hard materials. Apparatus and a method for manufacturing the cutting disks' are also disclosed.