In the follow case of damage to the CBN Cutting Inserts, it needs to be replaced,which generally occurs in interrupted cutting conditions. There are other situations, such as the

size of the workpiece after processing is too poor, the surface finish can not meet the requirements of the drawings, etc. When the above situation occurs, the pcbn inserts edge 

has worn out, and it is necessary to replace the new cbn tools to machine the workpiece.

1) Chipping

2) Peeling

3) Broken

4) Cracked

5) Wore out