KEVOS® MAKEOS · Manufacturing
Milling Feed, Removal Rate and Time
What feed, removal rate and cutting time follow from this setup?
Calculate table feed, steady material removal and ideal cutting time from RPM, effective teeth and feed per tooth.
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How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Spindle speed | rpm | Actual machine setting, checked against tooling and machine limits. |
| Effective teeth | teeth | Effective cutting teeth specified for the tool, not inserts that do not contribute to feed. |
| Feed per tooth | mm/tooth | Tool supplier recommendation or proven process sheet. |
| Radial engagement | mm | Programmed engaged width; this calculation assumes constant engagement. |
| Axial depth | mm | Programmed axial cutting depth. |
| Feed travel | mm | Total distance travelled at the entered feed, including any chosen approach and overtravel. |
Method and formulas
- Feed = RPM × effective teeth × feed per tooth.
- Removal rate (cm³/min) = width × depth × feed ÷ 1000.
- Time (min) = feed travel ÷ feed. Example: 1000 rpm, 4 teeth and 0.05 mm/tooth gives 200 mm/min; 10 × 2 mm engagement gives 4 cm³/min; 100 mm takes 0.5 min.
Limitations
- Excludes acceleration, tool changes, air moves and engagement changes.
- Feed per tooth is not automatically maximum chip thickness. No chip-thinning correction is applied.
- Example values are illustrations. Replace them with values for your actual task.
Typical uses
- milling feed
- chip load
- metal removal rate
Who it is for
- CNC programmers
- Estimators
What you get
- Table feed
- Material removal
- Cutting time
Interpreting the result
- Add non-cutting time when estimating a complete cycle and verify cutting power separately.
References
- Machinery’s Handbook, 29th edition (Industrial Press, 2012), printed pp. 1039–1058, 1087, 1153. Topic reference; no source tables or recommended settings are reproduced.
- Sandvik Coromant: Milling formulas and definitions — https://www.sandvik.coromant.com/en-gb/knowledge/machining-formulas-definitions/milling-formulas-definitions
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