80 MMS March 2017 mmsonline.com
FEATURE
Edge Economies
Recent introductions from a major cutting tool
maker illustrate the engineering and
application of tools designed to deliver
an increased number of useful edges.
BY PE TE R Z E LI N S K I
The Mill 4-11 insert produces a
90-degree square shoulder.
More typical inserts performing
this cutting would offer two
usable edges. This insert
essentially joins two such insert
geometries to attain four usable
edges. One side benefit is higher
metal-removal rates in some
applications, because the
combination of positive and
negative angles in this form
permits high cutting forces.