For example, when roughing, the round CBN inserts is used in cutting, with the increasing for cutting depth,
at the highest cutting speed position, there may be tiny flakes off, the reason is that the maximum diameter
beyond the cut chip thickness increases.
It does not affect the pcbn inserts cutting performance without considering the surface finish.
In fact, due to the tiny chipping, the solid cbn inserts can withstand the creation of a new sharp edge.
During the long period of continuous machining, the tiny chipping, sparks can be seen on the surface, sparks flow
through the cbn turning inserts is generated by the workpiece and the new micro-edge, sometimes it can be continued