What is Feedrate?
In Non-Rotating applications (Turning, Grooving, etc), Feedrate is the velocity at which the cutter advances against the workpiece. It is expressed in units of distance per revolution (Inch Per Revolution [IPR] or [mm/Rev]).
Think About the Force
What should we factor-in to determine the right feedrate?
- Cutting edge strength (Radius size, sharpness, substrate toughness).
- Workpiece material properties.
- Workpiece geometry (Thin walls)
- Clamping stability.
- The desired surface finish.
- Power of the machine spindle.
Units and Calculations
- In turning, the feedrate is expressed by the distance that the cutting tool is traveling over one full rotation of the workpiece.
- Imperial: Inche per Revolution [IPR]
- Metric: Milimiter per Revolution [mm/rev]