Sandvik Coromant Silent tools - How to reduce vibration in metal cutting - Manual (Page 26)

Sandvik Coromant – How to reduce vibration in metal cutting 22
When discussing tool overhangs of 10 times the diameter or more,
damped boring bars and carbide re-inforcement should be considered
or a combination of both. The cutting unit coupling is a critical link and
needs to be beyond any risk of instability. The front end should also be
characterized by low weight. This means that if there is scope for diameter
reduction of the cutting unit or the last part of the bar, this is worth conside-
ring. It is the back end and the main part of the boring bar that should be
as large as the operation permits – even tapered bars are suitable for some
applications.
CoroTurn SL with radial adjustment.
The CoroTurn SL (570 coupling) provides the means for high stability,
diameter reduction, quick change of the cutting unit and radial adjust-
ment of the cutting edge (f
1
dimension). Bar diameters of over 40 mm have
adaptors which reduce the coupling to accommodate the large 40 mm dia-
meter range of cutting units.