Sandvik Coromant Silent tools - How to reduce vibration in metal cutting - Manual (Page 13)

Sandvik Coromant – How to reduce vibration in metal cutting 9
Examples of geometry:
- PF: Finshing of steel materials
- PM: Medium machining of steel materials
- PR: Roughing of steel materials
Practical hints:
• Choose an open chip breaker, medium chip breaker (PM), instead of
a finishing geometry as the finishing geometry can break the chips too
hard and lead to excessive cutting forces resulting in bad surface finish.
Insert style:
Depending on the operation – longitudinal turning or copying – the choice
of insert style affects the result of the machining process.
Practical hints:
• T-style inserts are first choice for internal longitudinal turning as this
style of insert uses an entering angle at 91 degrees. This helps to direct
the cutting forces correctly.
• D and V-style inserts both have good copying possibilities and small
insert point angles, which help to reduce the force variation.