Каталог Dormer Pramet фрезерование 2021 - 2022 - страница 207

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Навигация

Nomenclature

A

BAShank
BHelix Angle
FCFlute

D Outside Diameter (DC) E Cutting Length (AP) F Overall Length (OAL) C

E

D

6 2 1 1Gash
8 3 2Primary Relief Angle
7 3Secondary Relief Angle
4Heel
2 5Cutting Edge
3 6Rake Angle
9 5 7Width of Primary Relief Land
4 8Width of Secondary Relief Land

9 Undercut Face

Features Of The End Mill - Choosing The Number Of Flutes (NOF) Number of flutes should be determined by:

  • Milled material
  • Dimension of workpiece
  • Milling conditions

2 Flutes 3 Flutes 4 Flutes (or multi-flutes)

LOWDEFLECTION STRENGTH HIGH
BIGCHIP SPACE SMALL
  • Large chip space.
  • Chip space almost as large as for 2 flutes.
  • Highest rigidity.
  • Easy chip ejection.
  • Larger section area - higher rigidity than 2 flutes
  • Largest section area – small chip space.
  • Good for slot milling.
  • Improved surface finish
  • Gives best surface finish.
  • Good for heavy duty milling.
  • Recommended for profiling, side milling and shallow
  • Less rigidity due to small section area. slotting.
  • Lower quality surface finish