44 | CUTTING TOOLS | Grooving & Parting Off
Exploring issues and technology advances with Horn USA
What, in your opinion,
has been the greatest
technology development in
grooving and parting
The greatest technological
development in grooving
and parting off tools is
the development of new
coatings, cutting geometries,
and applying coolant directly
to the cutting zone. Horn
is constantly looking for
ways to decrease the cost
per piece for the customer.
This involves continuous
research and development
to create new, or improve
upon current geometries
and coatings to transfer
heat from the cutting edge
of the tool and into the
chip. Proper chip control
and formation can greatly
increase tool performance
and minimize wear on the
cutting edge of the tool.
Internal grooving (including
Chip evacuation and proper coolant
supply are extremely important
to internal grooving processes.
Selecting the proper chip geometry
and coating combination is crucial
to a repeatable and stable process
for all grooving applications.
Coolant through options on tools
are a good way to help ensure
the cutting edge of the tool has
lubrication to aid in heat transfer
from the insert to the chip.
Ensuring you are using the most
effective grooving process will
provide the most benefits. Many
of our grooving tools have multidirectional capabilities. This allows
for a “plunge turn” process keeping
the tool engaged in the cut, thus
reducing cycle time.
Can you provide advice and best practices for the following grooving and parting
The rigidity and stability of your tool
holder set up is extremely important when
it comes to parting off as your tool is often
times going very deep into the material.
Controlling surface footage (SFM) and feed
rate at near zero diameter is very important
to maintaining good tool life. This is a harsh
environment as you are not producing enough
heat to plasticize the material you are cutting.
Catastrophic tool failure is common in part
off applications if these conditions are not
New coating and substrate combinations are
continually increasing heat resistance and
lubricity. This ever advancing technology
along with complex chip geometries and
coolant-through holders and inserts allow for
increased cutting parameters, thus reducing
cycle time. Horn has come out with the EG35
and EG55 coatings that have shown increased
tool life in steels and stainless steels.
Grooving and Parting Off Q&A
Grooving and parting off are universal metal removal processes used by
many manufacturers. While a common metalworking processes, with ongoing
technology developments, Shop Metalworking Technology thought it would
be a good idea to approach a cutting tool manufacturer with expertise in
grooving and parting off and gain some insights to share with our readers.
Below is information provided by sales engineers from Horn USA.
Participants in the Q&A include: Tom Guzik, Russ Kitzke, Scott Nelson,
Ryan Schaefer, Brian Sedesky and Mike Smoody.