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The role of geometry Customized solutions
Cutting geometry and edge preparation are crucial The automotive industry is one of the largest
for tool performance. There are several types of producers of cast iron parts. In efforts to reduce
cutting-edge preparations: rounded, chamfered and cost per part in the mass production of automotive
so on. Although selecting the required preparation components, cutting tool manufacturers have
might appear to be a simple task, it is not so easy. developed customized highly engineered tools that
Which width or angle of chamfering will be the most perform specific machining operations with maximum
effective? How to ensure the defined angle during tool productivity and lead to reducing the non-cutting
production? These questions are particularly critical component of cycle time.
when using ceramic or CBN inserts. The answers
require appropriate professional skills and experience. A customized solution for machining steering knuckles
provides an excellent example of these combined
tools. ISCAR proposed this solution as a part of a
turnkey project for one of the biggest car producers.
The combined assembled tool performs several
operations - cutting inner thread in holes for dust
shield by tapping; milling two grooves (for snap ring
and grease seal) by helical interpolation; and milling
the outer face. The tool carries different radially
and tangentially clamped inserts and has a tapping
attachment with a misalignment compensating
mechanism. The strict tolerance limits for linear
dimensions ensure successful utilization of the tool
in multi-spindle machines.

It turns out that machining cast iron is not such a
simple matter after all, as is sometimes believed.
Extra fine finisher Understanding the colorful world of this material
ISCAR's recent launch of new products in its and following the cast-iron rules for correct cutting
“LOGIQ” marketing campaign included the TANGFIN tool application will ensure maximum efficiency and
family of face milling cutters designed for extra demonstrate the tool’s "IQ" capabilities to achieve –
fine surface finish which has been of great interest and sustain - highly effective machining practices.
to producers of cast iron parts. The tangentially
clamped inserts are positioned in a TANGFIN cutter
with a gradual displacement in both radial and axial
directions. The design causes each insert to cut
only a small portion of the material. This concept,
together with the high-rigidity tangential clamping
principle and the long wiper edge of the insert,
results in an impressive machined surface finish,
with an Ra up to 0.1 μ (4 μin) roughness parameter.

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