Cutting speed and Estimate Time for Various Operations formula on cnc/vmc machine

Cutting speed and Estimate Time for Various Operations formula on cnc/vmc machine





Milling Time Estimation - 




The cutting speed in milling is the surface speed of milling cutter.

Cutting speed =  pi * diameter of milling cutter(mm) * rotational; spped of milling cutter (rpm) /1000

Time for one pass =  L/FZN

F = feed per tooth  (mm)
Z = number of teeth in milling cutter
L = length of movement (mm)
N = cutting speed (m/mm)


Drilling Time Estimation



The cutting speed in drilling is the surface speed of the twist drill.


Cutting speed =  pi * diameter of milling cutter(mm) * rotational; spped of milling cutter (rpm) /1000


Turning Time Estimation -



The cutting in turning is the surface speed of workpiece.

 Cutting speed = pi * diameter of milling cutter(mm) * rotational; spped of milling cutter (rpm) /1000

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