Rotating cutting tool

摘要

The invention relates to cutting tools for metal working. The claimed cutting tool (needle-cutter) comprises cutting elements assembled at least into two sets and presenting essentially pieces of wire. The cutting elements are fastened to one another at one end, thereby forming the internal non-working surface while their other free ends form the working surface. According to the invention the working surface is essentially a disc having the side edges arranged at an angle substantially equal to 90 DEG . The diameter of each cutting element and the mean length thereof in a set are represented by the following ratios: d14/lS12=d24/lS22=. . . dn4/lSn2, where: d1, d2 . . . dn are the diameters of the cutting elements in sets; lS1, lS2. . . lSn are the mean lengths of the cutting elements in sets; 1, 2 . . . n are the numbers of sets.