A milling tool includes a tool body having a front and a rear end between which an envelope surface extends. At least one insert seat having an outer border delimiting the insert seat from the front end and the envelope surface is provided. At least one double-sided cutting insert having an upper side, a lower side, an upper cutting edge and a lower cutting edge is radially mounted in the insert seat with the lower side abutting a bottom contact surface to provide an active upper cutting edge. In a direction of rotation of the tool body, at least a part of the lower cutting edge neighboring the outer border and located behind the active upper cutting edge, does not protrude by more than 0.5 mm from the outer border, and a distance between the part of the lower cutting edge and the outer border is smaller than 0.5 mm.

A reversible cutting insert for milling has first and second cutting edges formed at the transitions from the top and bottom surfaces to a lateral face. The cutting insert has a 4-fold rotational symmetry. A reference plane extends perpendicular to the axis of symmetry. The cutting edges have four cutting edge portions. One cutting edge portion is a main edge and a wiper edge that are connected by a rounded cutting corner. The first and second cutting edges are at the greatest distance from the reference plane in the region of the cutting corners. Main and wiper clearance faces directly adjoin an assigned main edge and wiper edge, respectively, in the circumferential lateral face. Exterior angles between the main clearance faces and the reference plane are greater than exterior angles between the wiper clearance faces and the reference plane.

A milling tool has a support member with an exterior surface with at least one receptacle, wherein the at least one receptacle has a bottom. At least one cutting element provided with a cutter having a cutting edge is positioned in the at least one receptacle. A three-point support is arranged between the at least one cutting element and the bottom of the at least one receptacle for positioning the cutting edge relative to the bottom of the at least one receptacle. The three-point support comprises three support pads arranged at a bottom side of the at least one cutting element and/or three projections arranged at the bottom of the at least one receptacle.

A cutting insert has opposing front and back end surfaces with a peripheral side surface extending therebetween and a first axis extending therethrough, and a median plane perpendicular to the first axis located between the front and back end surfaces. Each of the front and back end surfaces has a rectangular shape in a respective end view thereof, and two diagonally opposed raised corners and two diagonally opposed lowered corners with respect to the median plane. The front end surface has a front major cutting edge associated therewith, and in a cross-section taken in a first plane containing the first axis, the front end surface has a concave shape and the back end surface has a convex shape. The cutting insert is removably secured in an insert receiving pocket of a cutting tool with the peripheral side surface and back end surface making contact with pocket support walls.

A cutting insert has opposing front and back end surfaces with a peripheral side surface extending therebetween and a first axis extending therethrough, and a median plane perpendicular to the first axis located between the front and back end surfaces. Each of the front and back end surfaces has a rectangular shape in a respective end view thereof, and two diagonally opposed raised corners and two diagonally opposed lowered corners with respect to the median plane. The front end surface has a front major cutting edge associated therewith, and in a cross-section taken in a first plane containing the first axis, the front end surface has a concave shape and the back end surface has a convex shape. The cutting insert is removably secured in an insert receiving pocket of a cutting tool with the peripheral side surface and back end surface making contact with pocket support walls.

A double-sided, indexable, non-positive ramping insert has a 180-degree rotational symmetry about each of the first, second and third axes of a three-dimensional Euclidean space. The ramping insert includes two first surfaces and an insert peripheral surface which extends therebetween. The ramping insert includes four cutting portions, each includes a major cutting edge, a wiper edge connected transversely thereto via a corner cutting edge and a ramping edge which extends transversely from the wiper edge in a view parallel to the first axis. Each peripheral surface includes four non-positive ramping relief surfaces, each of which extends from a respective ramping edge towards, and not beyond, a first median plane which is defined by the second and third axes.

A double-sided, indexable, non-positive ramping insert has a 180-degree rotational symmetry about each of the first, second and third axes of a three-dimensional Euclidean space. The ramping insert includes two first surfaces and an insert peripheral surface which extends therebetween. The ramping insert includes four cutting portions, each includes a major cutting edge, a wiper edge connected transversely thereto via a corner cutting edge and a ramping edge which extends transversely from the wiper edge in a view parallel to the first axis. Each peripheral surface includes four non-positive ramping relief surfaces, each of which extends from a respective ramping edge towards, and not beyond, a first median plane which is defined by the second and third axes.

A technical object is to provide an insert capable of preventing escaping of the insert from an assembly of the insert and a tool holder. To this purpose, the insert includes an insert body, and a holder fastening portion provided in the insert body to be fastened to the tool holder, in which the holder fastening portion includes one or more fastening holes formed through the insert body from an upper surface to a lower surface, and one or more locking recesses formed by being recessed in a lower surface periphery of the insert body.

A cutting tool holder (10) configured for mounting thereon a cutting insert (30) to form a cutting tool (1); the cutting insert (30) has a top face (32T), a bottom face (32B), at least one side wall (32S) extending between the top face (32T) and the bottom face (32B), and an insert bore (35) extending between the top face (32T) and the bottom face (32B); the cutting tool holder (10) comprises a body (12) and a fastening member (50), the body (12) comprising an insert seat (20) having a base surface (22) and being configured for receiving therein the cutting insert (30); and a seat bore (25) having an open end at the base surface (22); the fastening member (50) defines a fastening member axis (XFM) and comprises and shank portion (52) and a head portion (51) extending therealong; the shank portion (52) is configured for being received within the seat bore (25); and the head portion (51) comprises a first clamping region, and a second clamping region axially spaced therefrom and disposed between the shank portion (52) and the first clamping region; the fastening member (50) is configured for assuming a mounting position, in which the fastening member (50) remains in engagement with the seat bore (25) in the mounting position while allowing positioning of the cutting insert (30) into the insert seat (20), and a securing position in which the first and second clamping regions are disposed so as to engage two axially-spaced regions of the cutting insert (30) thereby securing it in the insert seat (20).

A cutting insert has top and bottom surfaces opposing each other and a side surface connecting them. A part of an intersecting ridge between the top and side surfaces functions as a cutting edge. On the side surface, a side surface portion adjacent to the intersecting ridge portion opposing the cutting edge intersects the top surface at an acute angle. At least on a part of a bottom surface, an inclined surface gradually approaching the top surface with increasing distance from a side surface portion on a side opposite to a cutting edge is formed. This allows a part of the cutting resistance to act on the side surface portion. As a result, friction resistance between the side surface portion and the side surface of an insert seat becomes larger, thereby suppressing a shifting of the cutting insert when cutting.