A milling insert suitable for shoulder milling includes a side surface extending between an upper and lower side and a cutting edge having a primary and a secondary cutting edge portion. The side surface includes an axial support surface opposite of the secondary cutting edge portion. The lower side includes a locking groove extending longitudinally, and a lower contact region formed to bear on a fastening member. The upper side has an upper contact region arranged to bear on a top support member of a tool in which the milling insert is mountable. A milling tool is provided with a top support member for bearing on the upper contact region of the milling insert, a locking ridge for locking with the locking groove, and an axial contact surface for supporting the axial support surface. A fastening member presses the milling insert against the top support member and the locking ridge.

A milling insert suitable for shoulder milling includes a side surface extending between an upper and lower side and a cutting edge having a primary and a secondary cutting edge portion. The side surface includes an axial support surface opposite of the secondary cutting edge portion. The lower side includes a locking groove extending longitudinally, and a lower contact region formed to bear on a fastening member. The upper side has an upper contact region arranged to bear on a top support member of a tool in which the milling insert is mountable. A milling tool is provided with a top support member for bearing on the upper contact region of the milling insert, a locking ridge for locking with the locking groove, and an axial contact surface for supporting the axial support surface. A fastening member presses the milling insert against the top support member and the locking ridge.

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.

The present invention relates to a cutting device and a chamfering machine comprising the same, and according to one aspect of the present invention, a cutting device for use in a chamfering process of a film laminate is provided, in which the cutting device comprises a rotating wheel having a rotation center; and a cutting bite comprising a main body mounted on the rotating wheel and a cutting tip provided on the main body and provided to perform chamfering of the film laminate by rotating the rotating wheel, wherein the cutting bite is mounted on the rotating wheel such that the central axis of the cutting tip is inclined at a first angle with respect to the tangential direction of a rotation locus of the cutting bite formed by rotating the rotating wheel.

A cutting insert includes: two opposite end surfaces; a peripheral side surface extending between the end surfaces; and plural cutting edge sections that are formed along an intersecting ridgeline portion between the peripheral side surface and each of the end surfaces. Each of the cutting edge sections includes a corner cutting edge, a major cutting edge, and a minor cutting edge. A non-cutting intersecting ridgeline area extending between adjacent cutting edge sections on one end surface is located adjacent, via the peripheral side surface, to at least a part of the corner cutting edge and the major cutting edge of an associating cutting edge section on the other end surface.

A double-sided, trigon cutting insert has three three major cutting edges formed at an intersection between a first planar side surface portion and first and second surfaces, and three minor cutting edges formed at an intersection between a second planar side surface portion and first and second surfaces. A planar rake surface extends radially inward and downward from each major cutting edge, and a rounded rake surface extends radially inward and downward from each minor cutting edge. An insert-receiving pocket of a cutting tool includes a planar bottom support surface, a first planar side support surface, a second planar side support surface, and a third planar side support surface. Each rounded rake surface is formed with a radius, R, that causes only a high point of each minor cutting edge to contact a workpiece during a machining operation.

Railway wheel milling tool system including a railway wheel truing cutters and tangential railway wheel milling inserts are disclosed. The tangential milling inserts have at least four indexable cutting edges, each with a central wiper cutting edge segment between two convex cutting edge segments. The milling inserts may allow both the flat portion and curved portion of a railway wheel to be machined with an improved surface finish. The railway wheel truing cutters comprise a plurality of insert pockets structured and arranged to receive the tangential railway wheel milling inserts.

A face milling tool includes a tool body having a central rotation axis around which the tool is rotatable, and at least one insert seat formed in a transition between a front end and an envelope surface of the tool. The tool further includes at least one cutting insert mounted in the insert seat, the cutting insert having an upper side defining an upper extension plane, a cutting edge extending around the circumference of the upper side, and a lower side defining a lower extension plane directed towards the bottom support surface of the insert seat. A center axis extends perpendicularly through the upper and the lower extension planes. The tool is configured such that a main cutting edge portion is at an entering angle κ smaller than 80° and such that the upper extension plane is at a radial tipping-in angle −60°≦γ.sub.f≦−25° and at an axial tipping-in angle −20°≦γ.sub.m≦0°, such that an angle of inclination λ of the main cutting edge portion is within the range 15°≦λ≦50°.

An indexable cutting insert is suitable for vertical and oblique machining. The cutting insert has top and bottom surfaces, first to fourth side surfaces extending between the top and bottom surfaces, and a screw hole passing through the top and bottom surfaces. The top surface has a mounting surface of a flat surface. The top and bottom surfaces are rotationally symmetric with each other. A cutting edge is formed at a junction between the top surface and the adjacent first and second side surfaces. A non-cutting edge is formed at a junction between the top surface and the adjacent third and fourth side surfaces. The first and second side surfaces form an acute angle with a plane extending from the mounting surface of the top surface. The third and fourth side surfaces form an obtuse angle with the plane extending from the mounting surface of the top surface.

A tangential cutting insert for a milling tool includes a cutting face that extends along a longitudinal axis and along a transversal axis, and a cutting edge that extends at the periphery of the cutting face. The cutting face has a central portion including first and second central cutting edges extending along the longitudinal axis and on opposite sides of the cutting face, and an outwardly extending end portion having at least three end cutting edges. A first of the at least two cutting edges is inclined relative to the longitudinal axis and a second of the at least two end cutting edges is inclined relative to the transversal axis at an angle from 10° to 35° respectively, for example, 20° to 30° or 25°.