Broken chip of the CBN inserts, actively guide the iron filings to curl and deform to break, avoiding the formation of long iron filings, thereby avoiding the surface scratches 

and secondary cutting of the workpiece caused by the iron filings around the workpiece.

At the same time, it could Increase the sharpness of the cutting edge, reduce the cutting force, and solve the problem of cutting vibration and deformation of thin-walled 

parts.

How to design the Chip breaker? Mainly based on the follows:

Physical properties such as hardness and toughness of the material to be processed;

Cutting allowance ap and feed rate f;

Shape characteristics of the machined position;