B23B 27/1648

Cutting tools of which the bits or tips {or cutting inserts} are of special material with exchangeable cutting bits {or cutting inserts}, e.g. able to be clamped {with plate-like cutting inserts of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane and at the same time upon the wall of a hole in the cutting insert characterised by having chip-breakers}