Important Formulae
(a) Cutting speed V = π DN /1000 m/min.
(b) Approach distance
Where D = Diameter of milling cutter, mm
d = Depth of cut, mm
(c) Time for one pass (t ) = 1 + 2 × A/ f z n minutes
Whre l = Length of the milling cut, mm
A = Approach distance
f = Feed per tooth, mm
z = Number of teeth, in the milling cutter.