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tool reference plane
Constructive Tool Angle
- Relief Angle α
- Wedge Angle β
- Rake Angle γ
Calculation of the
Effective Tool Angle
Working Relief
Angle α e
Working Rake
Angle γ e
Working Length l e
- Chip Thickness h cu
Definition according to
DIN 6580 und DIN
6581
working rake angle
γ e
rake angle
γ
Tool
working
reference plane
wedge
angle β
working re
angle α e
elief
cutting direction
chi
ip thickness h cu
relief
angle
α
working
direction
feed direction
Workpiece
Fi
ig. 6. Calculable characteristic values
Besides the concept of a
where one blade group con
a theoretical rake angle of
outside) at the same time. T
below right. The advantage
possible increase of the num
The chip thickness h cu is
the cutting process accordin
thickness on the flank. Th
blade group.
alternating blades there is the concept of full profile blad
nsists of only one full profile blade. This type of blades
γ = 0°. The full profile blades cut both flanks (inside
Thus, typical three-flank chips are cut, as shown in figur
e of this concept is the increased productivity due to
mber of blade groups in the cutter head.
s the most common characteristic value for the analysis
ng to [3]. A higher pressure angle δ results in a higher c
he chip thickness itself depends on the feed velocity
des,
has
and
re 7,
the
s of
chip
per
Fig. 7. T
Tool concepts and cutter separation of blades
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