|
Symbol
|
Units
|
Description
|
| Vc |
m/min |
Cutting
Speed |
| Vc
eff |
m/min |
Effective
Cutting Speed |
| n |
1/min |
Rotation
number |
| Vf |
mm/min |
Feed
Speed |
| f |
mm |
Feed/Revolution |
| fz |
mm |
Feed/tooth |
| d |
mm |
Diameter
of milling cutter |
| deff |
mm |
Effective
diam of cutter |
| z |
|
Number
of teeth |
| Rth |
|
Peak
to valley roughness |
| Q |
cm3/min |
Chip
removal rate |
| B |
° |
Angle
of inclination |
|
° |
Tool
angle of approach |
| hm |
mm |
Average
chip thickness |
| br |
mm |
Line
offset |
| ae |
mm |
Radial
depth of cut |
| ap |
mm |
Axial
depth of cut |
|
|
|
Formulas
|
| RPM |
SFPM x 3.82/Diam |
| SFPM |
RPM x Diam/3.82 |
| IPM |
IPR x RPM |
| IPR |
IPT x # of
teeth |
| To
convert metric surface feet to imperial |
|
Vc=
meters/min x 3.28 = SFPM
|
|
