Japan
United States
Mexico
Brazil
EU
United Kingdom
Germany
Spain
France
Italy
Poland
Turkey
China
South East Asia, Oceania, South Africa
India
For steels
For stainless steels
For cast iron
For non-ferrous metal
For difficult to cut material
For hardened material
Inch
Cutting speed (vc)
Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.
vc (SFM) : Cutting Speed
DC (inch) : Drill Diameter
π (3.14) : Pi
n (min-1) : Rotational Speed of the Main Spindle
*Unit transformation (from "mm" to "m")
Problem
What is the cutting speed when main axis spindle speed is 1350min-1 and drill diameter is .500inch ?
Answer
Substitute π=3.14, DC=.500inch, n=1350 into the formulae
vc=π×DC×n÷12=3.14×.500×1350÷12=176.6SFM
The cutting speed is 176.6SFM.
Feed of the main spindle (vf)
Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.
vf (IPM)：Feed Speed of the Main Spindle (Z axis)
fr(IPR)：Feed per Revolution
n(min-1) ：Rotational Speed of the Main Spindle
Problem
What is the spindle feed (vf) when the feed per revolution is .008IPR and main axis spindle speed is 1350min-1 ?
Answer
Substitute fr=.008,n=1350 into the formulae
vf=fr×n=.008×1350=10.8IPM
The spindle feed is 10.8IPM.
Drilling time (Tc)
Input the values
Tc (min) : Drilling Time
n (min-1) : Spindle Speed
ld (inch) : Hole Depth
fr (IPR): Feed per Revolution
i : Number of Holes
Problem
What is the drilling time required for drilling a 1.2inch length hole in alloy steel at a cutting speed of 165SFM and a feed .006IPR ?
Answer
Spindle Speed n =(165×12)÷ (.59×3.14) = 1068.8min-1
Tc=(1.2×1)÷(1068.8×.006)=.187
=.187×60≒11.2sec.
The answer is 11.2 sec.
Metric
Cutting speed (vc)
Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.
*Divide by 1,000 to change to m from mm.
vc (m/min) : Cutting Speed
DC (mm) : Drill Diameter
π (3.14) : Pi
n (min-1) : Main Axis Spindle Speed
Example
What is the cutting speed when main axis spindle speed is 1350min-1 and drill diameter is 12mm ?
Answer
Substitute π=3.14, DC=12, n=1350 into the formula
vc=π×DC×n÷1000=3.14×12×1350÷1000=50.9m/min
The cutting speed is 50.9m/min.
Feed of the main spindle (vf)
Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.
vf(mm/min)：Feed Speed of the Main Spindle (Z axis)
fr(mm/rev)：Feed per Revolution
n(min-1) ：Main Axis Spindle Speed
Example
What is the spindle feed (vf) when the feed per revolution is 0.2mm/rev and main axis spindle speed is 1350min-1 ?
Answer
Substitute fr=0.2,n=1350 into the formula
vf=fr×n=0.2×1350=270mm/min
The spindle feed is 270mm/min.
Drilling time (Tc)
Input the values
Tc (min) : Drilling Time
n (min-1) : Spindle Speed
ld (mm) : Hole Depth
fr (mm/rev): Feed per Revolution
i : Number of Holes
Example
What is the drilling time required for drilling a 30mm length hole in alloy steel (JIS SCM440) at a cutting speed of 50m/min and a feed 0.15mm/rev ?
Answer
n=（50×1000）÷(15×3.14)=1061.57min-1
Tc=(30×1)÷(1061.57×0.15)=0.188
=0.188×60≒11.3sec
For finish cutting
For medium cutting
For rough cutting
