What do high spindle speeds generally achieve in CNC milling?

High spindle speeds in CNC milling are primarily utilized to enhance material removal rates. When the spindle speed is increased, the cutting tool engages the material more frequently, which can lead to quicker cuts and more efficient machining. This allows for a higher volume of material to be removed in a shorter amount of time, increasing productivity and overall efficiency in the manufacturing process.

Additionally, higher spindle speeds can improve chip formation, leading to better cutting conditions. The increased velocity can aid in maintaining the optimal cutting geometry, which is crucial when working with many materials. Therefore, achieving enhanced material removal rates justifies the use of high spindle speeds in CNC milling.