Page 353 - Carbide drills I Thread cutting tools 2023
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Calculation formulas for cutting data
d 1 Diameter of the cutting edge [mm]
v c Cutting speed [m/min]
f Feed per rotation [mm]
n Spindle speed [min ]
-1
v f Feed rate [mm/min]
Q Material removal rate [cm /min]
3
T Primary processing time for the maximum drill depth of the tool [sec]
L Effective drill depth [mm]
Spindle speed v · 1000 1
n = c
d 1 · π min
Cutting speed d · n · π
m
v c = 1 1000 min
Feed rate mm
v f = f · n min
2
Material removal rate d · π · v cm 3
Q = 1 f
4 · 1000 min
Primary processing time L
T = v f · 60 sec i
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