Declared pitch-feed estimate
Thread machining time
Inputs
Declared axial travel per revolution; no thread form or starts are inferred.
Axial travel per pass including any user-decided allowance.
Constant speed used only for pitch-feed arithmetic.
Integer number of repeated equal-travel passes.
User-entered time added once per pass; sequence details are excluded.
Results
Declared pitch-feed rate
750
Declared travel time per pass
2.4
Declared repeated travel time
14.4
Declared travel + reversal time
21.6
vf = p·n · tpass = L/vf · 60 · ttotal = N(tpass + tr)
A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.
Nearby: Milling removal rate · Drilling speed & time · Turning material removal · Milling cutting parameters
Method
Formula, when it applies, and when it does not
Calculate per-pass and repeated thread-travel time from pitch, travel, speed, pass count, and reversal overhead.
vf = p·n · tpass = L/vf · 60 · ttotal = N(tpass + tr)
When
- Declared pitch equals axial feed per revolution
- Constant spindle speed
- Repeated equal travel passes
- User-entered reversal/overhead
Don’t
- This is declared thread-travel arithmetic only. It does not infer thread form, tool path, starts, infeed schedule, stock allowance, material, cutting conditions, tool life, machine acceleration, setup, non-cutting sequence, process suitability, or approval.