INDEXIERBARER SCHNEIDEINSATZ FÜR DREHENDE SCHNEIDWERKZEUGE

摘要

PCT No. PCT/CA93/00083 Sec. 371 Date Sep. 1, 1994 Sec. 102(e) Date Sep. 1, 1994 PCT Filed Mar. 2, 1993 PCT Pub. No. WO93/17822 PCT Pub. Date Sep. 16, 1993A cutting insert having helically arranged teeth, each comprising a six sided block having two major parallel rhomboid-shaped plane surfaces constituting a seating face and a clearance face respectively, two opposed minor side surfaces constituting cutting faces extending between the seating and clearance faces, each cutting face forming an acute angle with the clearance face and forming a cutting edge along the intersection therewith, and two minor parallel plane end faces extending between the seating face and the two cutting faces. Each cutting face has a concave curvature located centrally of its major dimension, and a convex curvature at each end of its major dimension to define a serpentine cutting face and cutting edge. When disposed along the helically arranged teeth of a rotary cutting tool, such as a milling cutter, the inserts form a cutting face, or a radial face, having a continuously variable positive radial rake angle, and a cutting edge of serpentine configuration which generally parallels the helical form of the teeth.