What key guidelines do you suggest for selecting an insert for grooving
and parting off?
We consider all aspects of the application. Material, workholding, rigidity, type
of machine tool, capability of the machine tool, width of the insert, depth of
cut, and type of coolant whether it be emulsion or oil. All of these factors
contribute to the selection of the style, geometry, and grade of the insert.
Grooving & Parting Off | CUTTING TOOLS | 45
Mike Smoody Russ Kitzke Tom Guzik Brian Sedesky Ryan Schaefer Scott Nelson
What advice would you give for
manufacturers who are considering their
options when it comes to grooving?
For example, when should an operator
consider plunge turning or ramping
instead of grooving or vice versa?
We would consider groove turning when
the width of the groove is more than
three times the width of the insert that
we would be using and the set-up is rigid.
This will allow for better distribution of
wear on all edges of the insert instead
of just on the front face of the insert as
would be the case in plunge grooving. We
would consider plunge cutting when the
width of the groove would require three or
less roughing passes to complete, or if the
machine/set-up is less rigid. Both options
are most often going to be for roughing
and will require a finishing pass.
What, in your opinion is the greatest
factor that can improve the performance
of a grooving or parting off insert?
The greatest factor is the rigidity of the
machine setup and tool used, and limiting
the time in cut to allow for longer service
life of the tools.
How do you assess and determine
the quality of your grooving and
parting off tools?
We assess the quality of our tools from
the feedback of customers and colleagues,
as well as testing data.
How have digital
(also known as Industry
4.0 and Industrial Internet
of Things) impacted
cutting tool developments?
Platforms such as Machining
Cloud allow everyone access
to an online catalog. More
importantly this will also
give them access to DXF
or STP files which aid in
programming and verifying
toolpaths before ever hitting
the shop floor.
How specifically have these changes
impacted Horn, its product offerings
and its services for customers?
These changes have forced Horn to
stay on the cutting edge of technology
by continuously working toward
improvement in our products, processes,
employees, and communication with
our customers. SMT
How important is coolant in grooving and parting off processes and how
have coolant delivery systems changed? Has this had an impact on how
Horn designs and manufactures its grooving and parting off tools?
Coolant plays a very important role in grooving and parting off applications.
It provides lubricity, cools the insert, and helps with chip evacuation.
Horn has developed various ways to deliver coolant to the cutting edge
through our toolholders. Those options include through the top of the tool
finger, from beneath the insert, through the insert itself, and from the side
of the insert. These technologies combined with the increasing prevalence
of high pressure coolant pumps on the machines provide incredible results.