Sandvik Ab

Sandvik Aktiebolag

Santrade, Ltd

Sture Muren

Jorgen V Wiman

Robert Isaksson

Jan-Olof Olsson

Fredrik Marell

Cutting insert

An indexable cutting insert for metal machining, in particular turning, is formed with banana- or C-shaped protrusions (11) adjacent to each operative cutting corner. The concave side of the protrusion faces in a direction towards the cutting corner. In comparison with corresponding inserts without such a protrusion a better chip control is achieved. Thus, the chip flow is led away from the machined surface both at small and large cutting depths and the chips are broken into suitable lengths.

Cutting insert with chip control protrusion on a chip surface

The present invention relates to a thread cutting insert (10) for use with an indexable tool. The insert (10) is a triangular, flat wafer of cutting material comprising three countersunk cutting corners (11), each having a chamfered part (12) provided with a cutting tip (13). The upper side of the cutting tip (13) is provided with a recess (22) which gives the insert (10) a positive cutting geometry. A flat upstanding area (23) is arranged radially inside the cutting tip (13) to finally shape the chip after it has been preformed at the recess (22).

Thread cutting insert

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Gavle, Sweden

Sture Muren