Machining
Machining time
In short
Cutting time for turning, facing at constant Vc, drilling and milling, per part and per batch. Example with the default values: Time per part = 0 min 37 s.
Calculation
Example calculated with the tool’s default values.
Inputs
- Operation
- Longitudinal turning or boring
- Machined length
- 120 mm
- Spindle speed N
- 1000 rpm
- Feed per rev
- 0.2 mm/rev
- Approach and overrun
- 2 mm
- Number of passes
- 1
- Number of parts
- 1
Results
- Time per part
- 0 min 37 s
Worked example
Every value in this section belongs to the example, calculated with the tool’s default values.
Other results of the example
- Time for 1 part
- 0 min 37 s
- Cutting time per pass
- 36.6 s
- Feed rate Vf
- 200 mm/min
- Tool travel
- 122.0 mm
Step-by-step calculation
Feed rate
Vf = f · N
0.200 × 1000 = 200.0 mm/min
Cutting time
t = (L + approche) / Vf
122.0 / 200.0 = 0.610 min
Time per part
t × passes + non-cutting
0.610 × 1 + 0.00 = 0.61 min
Limits
Indicative results: they replace neither the applicable standards nor the job drawings and instructions. Check the values entered and the result before doing the work.
Sources
- Sandvik Coromant, Machining formulas and definitions : Tc = lm / (fn · n) ; dressage à vitesse de coupe constante (link)
- Géométrie : Pointe du foret (Ø/2) / tan(σ/2) ; intégration de N(r) = 1000 Vc / (2π r)
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