Tool for chip removing machining as well as an insert-holding blade and a replaceable cutting insert therefor

摘要

A parting tool for the chip removing machining of metal blanks includes a blade and a replaceable cutting insert mounted in a seat, which is delimited between a bottom support and an elastically resilient clamping finger. The cutting insert includes an upper side, in which there is included a front rake surface, as well as an application surface positioned behind the same and against which the clamping finger is pressed. In the clamping finger, a flushing channel is included to spray a cooling medium toward the rake surface. A front nose of the clamping finger facing a shoulder is formed between the rake surface and the application surface and has the purpose of protecting the nose from chips. The shoulder has two knobs mutually separated by a central notch, via which cooling medium can pass from the flushing channel toward the rake surface.

主权项

1. A tool for chip removing machining, comprising:
a blade; and a replaceable cutting insert for grooving or parting mounted in a seat located in an end of the blade and delimited between a bottom support and an elastically resilient clamping finger, the cutting insert including a front side, a back side, two side surfaces, an under side, and an upper side, a rake surface is included in the upper side and situated closest to the front side and an application surface is positioned behind the same and against which the clamping finger is pressed, the clamping finger includes a flushing channel ,which opens toward the cutting insert, in order to spray a cooling medium toward the rake surface and a main cutting edge formed between the rake surface and the front side of the cutting insert , wherein a front nose of the clamping finger faces a shoulder formed between the rake surface and the application surface for protecting the nose from chips, the shoulder of the cutting insert including two knobs mutually separated by a central notch via which cooling medium can pass from the flushing channel toward the rake surface and the main cutting edge, wherein the knobs form a highest point of the cutting insert in a mounted state.