Sandvik Coromant Threading - Manual (Page 15)

15
2. Applications – Thread turning
Geometry A
First choice
• First choice for most op-
erations and materials
• Rounded cutting edge for
safe and consistent tool
life
• Good edge security
Geometry F
Sharp edge
• Sharp cutting edge
• Clean cuts in sticky or
work-hardening materials
• Low cutting forces and
good surface fi nish
• Reduced built-up edge
Geometry C
Chip-forming geometry
• Maximum chip control,
minimum supervision
required
• High security for all
threading, particularly
internal
• Optimized for low carbon-
and low-alloyed steels
• To be used with 1° modi-
fi ed fl ank infeed only
Insert geometries
Selecting the correct insert geometry is important in threading,
especially in machines where there is limited supervision. Here,
geometry A offers consistent tool life and quality and is the fi rst
choice for most applications, while geometry F is sharper, reducing
cutting forces.
The chip-forming geometry C enables more continuous and un-
supervised machining, free from sudden stoppages. This results in
predictable tool life, and more active machining time.
First choice