Sandvik Coromant Silent tools - application guide - Manual (Page 83)

81
Vc
LB/BD
-PR
-WM
Vc
LB/BD
4 5 6
F
c
[N]
F
c
[N]
F
p
F
p
f
n
f
n
4. Boring
Tips and hints, summary
• Choose the largest possible tool diameter with the shortest pos-
sible basic holder
• The entering angle should be close to 90 degrees to give more
axial cutting forces and less radial/tangential forces
• A small nose radius is ideal for small depths of cut and
decreases the risk of vibrations. Large nose radii have strong
edge security and allow for heavy feeds and large depths of cut.
The risk of vibration gets higher the larger nose radius you use.
Therefore, triangular, positive style inserts are first choice for
dampened boring operations
• In stable conditions, use wiper inserts for high productivity or
when high quality surfaces are required
Cutting speed in relation to overhang,
with conventional and dampened adaptors
Conventional
Dampened adaptor
Less radial forces (Fc) with small radii