| 摘要 |
The invention relates to a parting tool for the chip removing machining of metal blanks. The tool comprises a blade (3) and a replaceable cutting insert (4) mounted in a seat, which is delimited between a bottom support and an elastically resilient clamping finger (8). The cutting insert includes an upper side, in which there is included a front rake surface (22) as well as an application surface (23), which is positioned behind the same and against which the clamping finger (8) is pressed. In the clamping finger, a flushing channel (48) is included to spray a cooling medium toward the rake surface (22), a front nose of the clamping finger facing a shoulder, which is formed between the rake surface (22) and the application surface (23) and has the purpose of protecting the nose from chips. According to the invention, said shoulder consists of two knobs (41), which are mutually separated by a central notch (42), via which cooling medium can pass from the flushing channel (48) toward the rake surface (22). |
