Plunging strategies for drilling

 Plunging strategies for drilling
Solution
reduce feed rate vf (mm/min.)
additional pecking for drilling depths > 0.5 x D or transition to radial machining
Attention: Danger of breakage through abrupt loadincrease!
Oblique plunging up to 15º (preferred):
- reduction in feed rate vf (mm/min.) not required
Oblique plunging between 15º and 30º:
- reduce feed rate vf (mm/min.) in accordance with the illustration on the right
Helical plunging:
- for helical plunging on a milling cycle, we recommend a feed of 0.1 to 0.2 per cycle
- reduce feed rate vf (mm/min.) in accordance with the illustration on the right
- select preferred hole diameter 1.8 x D