Hard cutting force factors mainly include cutting speed, feed rate, cutting depth of flank wear and workpiece hardness. Research scholars suggest that the implementation of hard cutting on different levels of precision machine tools, cutting force does not change.

Dr. Brazil abraomendes pcbn tools were selected ceramic knives, low cbn cbn content and high levels of cutting aisi52100 bearing steel (hardness 62hrc) found: maximum radial cutting force, followed by the main cutting force and axial cutting forces; roughing cutting approximately 6-9 times the force when finishing; cutting force and feed rate, depth of cut and flank wear a nearly linear relationship; when the cutting speed increases, the cutting force decreased slightly. University of Aachen, Germany w. Professor konig pcbn by ceramic tool and cutting tool 100cr6 hardened bearing steel cutting force comparative experiment to study the cutting speed, depth of cut and feed rate of the cutting force of the impact the trend. Studies have shown that: Changes and cut the main cutting force and axial force increases linearly deep, radial force and slow growth; the same trend affecting different feed rate changes on cutting force, the growth rate is slightly lower than the axial force main cutting force and radial force, and when the feed rate is very small, there will be a radial force is greater than the main cutting force of the phenomenon.