Indexable cutting insert for rotary cutting tools

Details Indexable cutting insert for rotary cutting tools Indexable cutting insert for rotary cutting tools

B - Operations, Transporting

23

B

B23B 27/16 (2006.01) B23C 5/10 (2006.01) B23C 5/20 (2006.01) B23C 5/22 (2006.01)

Patent

CA 2062213

This relates to a cutting insert for use in a rotary cutting tool having helically arranged teeth, comprising, a six sided block having two major parallel rhomboid-shaped plane sur- faces constituting a seating face and a clearance face respective- ly, two opposed minor side surfaces constituting cutting faces extending between the seating and clearance faces, each said cut- ting face forming an acute angle with the clearance face and form- ing a cutting edge along the intersection therewith, and two minor parallel plane end faces extending between the seating and clear- ance faces and the two cutting faces. Each cutting face has a concave curvature centrally of its major dimension, and a convex curvature at each end of its major dimension to define a serpen- tine cutting face and cutting edge. When disposed along the helically arranged teeth of a rotary cutting tool, such as a mil- ling 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.

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