Cutting Speed (vc)

Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.

Cutting Speed (vc)

※Divide by 1000 to change to m from mm.
vc (m/min) : Cutting Speed
Dm (mm) : Workpiece Diameter
π (3.14) : Pi
n (min-1) : Main Axis Spindle Speed
n(min-1)
Dm(mm)
vc(m/min)

Example

Example

What is the cutting speed when main axis spindle speed is 700min-1and external diameter is Φ50 ?

Answer

Substitute π=3.14, Dm=50, n=700 into the formula.
vc=(π×Dm×n)÷1000=(3.14×50×700)÷1000
=110(m/min)
Cutting speed is 110m/min.

Feed (f)

Check the item you want to calculate, input values in the two boxes, and then press the Calculate button.

Feed (f)

f (mm/rev) : Feed per Revolution
I (mm/min) : Cutting Length per Min.
n (min-1) : Main Axis Spindle Speed
l(mm/min)
n(min-1)
f(mm/rev)

Example

Example

What is the feed per revolution when main axis spindle speed is 500min-1 and cutting length per minute is 120mm/min ?

Answer

Substitute n=500, I=120 into the formula.
f=l÷n=120÷500=0.24(mm/rev)
The answer is 0.24mm/rev.

Cutting time (Tc)

Input the values.

Cutting time (Tc)

Tc(min):Cutting Time
lm(mm):Workpiece Length
ｌ(mm/min):Cutting Length per Min.
lm(mm)
l(mm/min)
Tc(min)
second(s)

Example

What is the cutting time when 100mm workpiece is machined at 1000min-1 with feed = 0.2mm/rev ?

Answer

First, calculate the cutting length per min. from the feed and spindle speed.
l=f×n=0.2×1000=200(mm/min)
Substitute the answer above into the formula.
Tc=lm÷l=100÷200=0.5(min)
0.5×60=30(sec)The answer is 30 sec.

Theoretical finished surface roughness (h)

Input the values.

Theoretical finished surface roughness (h)

h (µm):Finished Surface Roughness
f (mm/rev):Feed per Revolution
RE (mm):Insert Corner Radius
f(mm/rev)
RE(mm)
h(μm）

Example

Example

What is the theoretical finished surface roughness when the insert corner radius is 0.8mm and feed is 0.2mm/rev ?

Answer

Substitute f=0.2mm/rev, RE=0.8 into the formula.
h=0.22÷(8×0.8)×1000=6.25µm
The theoretical finished surface roughness is 6µm.