What is calculated?
Peripheral speed at drill diameter sets spindle speed. Feed per revolution and axial travel give feed rate and pure cutting time.
Equations
n = 1000vc/(πd)
vf = n·f
th = L/vf
Manufacturing · preliminary design
Drilling data and machining time
Calculate spindle speed, feed rate, cutting time and material-removal rate for drilling.
IJ 5
02
Results
Enter values and run the calculation.
Application and limits
Machine setup, quoting time and CAM-value plausibility checks.
Constant cutting values, one stroke; pecking, rapid travel, tool changes and acceleration excluded.
Frequently asked questions
Where do vc and f come from?
From tool-maker data for material, cutting grade, coolant and hole depth.
Why is real time longer?
Approach, pecking, retract and tool changes are outside pure cutting time.
Technical basis
Dubbel, manufacturing processes, section 4.2.3 Drilling; DIN 6580/6584 terminology (local source, 2026-09-09).
The source supports the equation structure; this calculator does not claim a complete standards verification.