Engineering calculators
Compact machining references. Open one calculator at a time.
n (rpm)
3,819.7
Vf (mm/min)
305.6
n (rpm)
7,957.7
Vf (mm/min)
954.9
Helix angle α
4.55
Helical path feed (mm/min)
1,440
XY feed component (mm/min)
1,438.4
Turns
0
Helix path length (mm)
0
Segment time (s)
0
Helical path feed assumes the control interprets F along the interpolated path. Internal/external circular milling may also require cutter-center feed correction.
n₂ (rpm)
2,666.7
Segment time
4
Segment time
3
Cutting time (sec)
7
Total time (sec)
12
Teeth k
39
Theoretical tracking diameter D′ (mm)
9.9313
Δ (mm)
-0.0687
Theoretical tracking diameter only. Forming/cutting knurl geometry and tool-maker recommendations can require a different blank diameter.
F (mm/min)
180
Equivalent C-axis speed (deg/min)
2,062.6
Surface conversion at the entered diameter. Verify the machine control’s C-axis feed convention before using it in NC code.
k (factor)
1.667
Commanded fz (mm/tooth)
0.05
Effective chip thickness (mm)
0.03
MRR (mm³/min)
2,000
MRR (cm³/min)
2
Torque / Power quick tools
Torque T (N·m)
6
Power P (kW)
8.33
Ø = 6 • z = 4
Recommended Vc (m/min)
180
Recommended fz (mm/tooth)
0.022
Estimated n (rpm)
9,549
Estimated Vf (mm/min)
859
Vc range
140 — 220
fz range
0.015 — 0.03
Starting values only. Actual cutting data depend on tool grade/coating, coolant, rigidity, hardness, engagement and the tool manufacturer.