What is the role of the cutting edge
Improve the cooling condition of the tip of the blade and reduce the wear and tear.I hope my answer will help you.
Reducing the cutting thickness at the tip of the knife makes the surface of the machined surface to be formed under the smaller cutting thickness, which is helpful to improve the surface roughness of the workpiece
The transition cutting edge is a cutting edge between the main and the side angles, and the blade is sharpened because it enhances the strength of the tip
