# Drilling cycle-time and power screening
# Scope: Axial feed and drilling time from RPM and feed per revolution; peck/retract omitted.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

speed = 3000 rpm
feedPerRevolution = 0.1 mm
depth = 20 mm

feed := speed*feedPerRevolution/(2*pi) [mm/s]
duration := depth/feed [s]

check drill time budget: duration <= 5 s

scenario alternative: speed = 2400 rpm