Page 22 - machining_titanium_05_2019

MILLING TITANIUM There are different methods for calculating average chip thickness in milling hm such as arithmetic

mean, weighted mean, or a result based on finding the cross-sectional area of an assumingly
undeformed chip and its substitution by simple rectangular, but the most common method is to
compute average chip thickness in relation to half of an angle of engagement AE (Fig. 10).

Vf
fz

a e n n hmax
AE/2
hm
AE/2

Fig. 10 Average (hm) and maximum (hmax) chip thickness in milling

n

Vf

ae
d
Fig. 11 Slab milling and milling deep shoulder

ae
ae
ae ≤
d
2
Fig. 12 Face milling with depth of cut no more than the radius of a milling cutter

20 ISCAR