Dimensional accuracy, stability and process reliability are said to be assured, as the torque generated during machining is dissipated into the body. Horn offers two body types, the first having a cutting edge diameter of 100 mm. The tool is equipped with 14 type 406 indexable inserts, which produce seven effective cuts ranging from 9.6 mm wide to a maximum of 12.9 mm. Milling depth is up to 20 mm.
The second body type is equipped with 12 cutting inserts of type 409 and has a cutting edge diameter of 125 mm. On this tool, the cutting width with six effective cuts can be adjusted between 12.9 and 18.8 mm, while the maximum milling depth is 32.5 mm.
Horn’s 406 and 409 type indexable inserts have been chosen for the application as they are precision ground and achieve high surface quality at the base of the groove and on the flanks. Furthermore, double positive axial and radial rake angles ensure a soft cut. The tangentially screwed cutting insert's trailing chamfer produces a secondary cutting edge, resulting in high-quality machined surfaces, says Horn, while an additional freeform surface chamfer is designed to provide a stable wedge angle and smooth milling.
