TOOL FOR MILLING grooves AND PLATE FOR MILLING grooves FOR IT

摘要

1. A double-sided plate (23, 23 ') for milling grooves mounted on the edge of the holder (25) of the tool (21) for milling grooves with offset, containing: the first side surface (27); the second side surface (29); a set of edge surfaces (31) between the first and second side surfaces, each of which intersects with another edge surface in the corner (33) and forms a cutting edge (35), while the first and second side surfaces (27 and 29) have a lateral supporting surface (37 and 39) the plates for abutment to the abutment surface (41 and 43) in the holder (25), and the plate (23, 23 ') has mirror symmetry with respect to the central plane (P), extending through the edge surfaces (31) in the middle between the and the second side surfaces (27 and 29), distinguishing the fact that on each edge surface (31) is provided a chipbreaker (65) corresponding to each cutting edge (35), while each chipbreaker (65) includes a recess (67) under the cutting edge (35) and a section (69) protruding to the cutting edge (35), and the protruding section (69) forms the first and second chip discharge recesses (71 and 73), between the protruding section (69) and the feather and second side surfaces (27 and 29), respectively. 2. A plate (23 ') according to claim 1, characterized in that it contains at least five edge surfaces (31). The plate (23, 23 ') according to claim 1 or 2, characterized in that each lateral supporting surface (37, 39) of the plate is made essentially flat. The insert (23, 23 ') according to claim 1 or 2, characterized in that the cleaning surface (85) is provided on each edge surface (31) and corresponds to each cutting edge (35), with each cleaning surface (85) provided substance