Cutting Speed
Cutting speed for rotating tool is the speed that the periphery of the tool in meter/min as it acts on the material being machined.
Cutting Speed = Peripheral Speed
Cutting Speed is measured in M/Min
Cutting speed formula:
n = revolutions/min (rpm)
D = diameter of the tool (mm)
Vc = cutting speed (m/min)
Feedrate = rpm * number of teeth * cut depth/tooth
Assignment: Calculation of Speeds & Feeds
Use the formulas above to calculate the rpm and feed in the table below.
| Cutting Speed | 244 m/min |
| Diameter of Cutter / 4 Flutes | Ø34 |
| Calculate rpm | |
| Calculate feed mm/min | |
| Cutting Speed | 410 m/min |
| Diameter of Cutter / 2 Flutes | Ø13 |
| Calculate rpm | |
| Calculate feed mm/min | |
| Cutting Speed | 250 m/min |
| Diameter of Cutter / 2 Flutes | Ø4 |
| Calculate rpm | |
| Calculate feed mm/min | |
| Cutting Speed | 350 m/min |
| Diameter of Cutter / 6 Tips | Ø120 |
| Calculate rpm | |
| Calculate feed mm/min | |
| Cutting Speed | 610 m/min |
| Diameter of Cutter / 3 Tips | Ø25 |
| Calculate rpm | |
| Calculate feed mm/min | |
