Sandvik Coromant Silent tools - users guide - Manual (Page 34)

34
3-5° 0.5 x '
ap
'
ap
Feed direction from
inside out
Internal threading
Reduce risk of vibration:
• Use modified flank infeed.
• Infeed per pass should not exceed 0.2 mm and never
be less than 0.06 mm.
• Final pass always with infeed.
• Use a sharp geometry for lowest cutting forces.
Modified flank infeed
directs the chips out
from the hole
Feed direction
Chip direction
Chip evacuation:
• Use modified flank infeed to
lead the spiral chips towards the
opening of the hole.
• Use inside out feed direction for
best chip control.
• Use coolant for best chip
evacuation.
• Use a chip-breaking geometry.