- A TOOL FOR CHIP REMOVING MACHINING AS WELL AS AN INSERT-HOLDING BLADE AND A REPLACEABLE CUTTING INSERT THEREFOR

摘要

The present invention relates to a segmenting tool for chip breaking machining of metal blanks. The tool comprises a blade 3 and an exchangeable cutting insert 4 mounted on a seat, the seat being bounded between the bottom support and the resiliently recoverable clamping fingers 8. The cutting insert comprises an upper side, on the upper side an application surface 23 as well as a front rake surface 22, the application surface 23 being located behind the front rake surface 22 and relative to the application surface 23 The clamping finger 8 is pressed. In the clamping finger, a flushing channel 48 is included to spray the cooling medium towards the rake surface 22, the front nose of the clamping finger facing the shoulder, and the shoulder between the rake surface 22 and the application surface 23 It is formed in and is to protect the nose from chips. According to the present invention, the shoulder portion is made of two knobs 41, the two knobs 41 are separated from each other by a central notch 42, and the cooling medium through the central notch 42 is It can pass from the flushing channel 48 toward the rake surface 22.