Carbide Drilling Tools
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Formulas and Symbol descriptions are found at the end of this page, or
click here




DIXI
Center & NC Spotting
Drills


DIXI Micro Drills


DIXI Standard Drills


DIXI Spade - Spiral Gun & Half Moon Drills


Symbol Descriptions & Formulas

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