CUTTING TOOLS COATED WITH DIAMOND METHOD OF COATING DIAMOND FOR CUTTING TOOLS AND APPARATUS FOR THE METHOD

摘要

The present invention relates to a cutting tool capable of rapidly forming a uniform diamond coating layer on a desired portion of a surface of a cutting tool, and more particularly, a cutting tool having a thick diamond coating layer formed on an edge portion thereof. A cutting tool according to the present invention is a cutting tool having a columnar shape and a center portion of a tip portion thereof being rotated in contact with a workpiece to perform a cutting operation. The tip of the cutting tool is made of a sintered alloy as a base material, And a thickness of the diamond coating layer is thinner than a thickness of a remaining portion of the diamond coating layer except for the central portion.