Sandvik Coromant Quick Change for CNC Lathes - Manual (Page 19)

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Boring bars and Silent Tools
Boring bars are most problematic with longer set up times
(center height/length setting and coolant connection) and vibra-
tion with longer overhangs. The quick change function on a
boring bar saves a lot more production time compared to a
normal external turning tool. When starting to implement quick
change it is not uncommon to start with just internal.
Long boring bars create extra issues with vibration and also
collision risks when other tools are being used. Coromant Capto
Silent Tools anti-vibration boring bars with cutting lengths up to
10 x D. can turn a potential problem into a competitive
advantage.
TIP - For long boring bars go for the largest Coromant Capto size
possible to get max stability from the coupling flange. (External
clamping units do not need to be the same size as they are
different tools anyway).
SL - Serration Lock modular system
Modularity provides a very big benefit for 2 main
reasons.
- Combinations – a large range of combinations can be
built up with a relatively small number of adaptors and heads.
This eliminates the need for most special tools ensuring that
standard tools are always available even for some ‘special’
applications.
- Cost reduction – Quick Change holders are more expensive
than a shank tool or boring bar. Using SL heads on some of
the higher risk applications helps to keep tool spend the same
as for shank tools in the long run.