1.2 HIGH SPEED MACHINING

 

• Usually spindle speeds above 10000 RPM, but this is highly relative to the cutting tool and work.

 

• The cutting velocity is higher, but the feed/depth of the cut is reduced, the resulting mrr is still higher.

 

• Higher spindle speeds call for new low inertia spindle, and tolerances as well. Small tolerance problems can result in unacceptable vibrations at these speeds.

 

• The table below is an example of some cutting speeds [Ashley, 1995]