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.

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 rotary cutting tool, in particular a drill, is described, which comprises a shank and an exchangeable cutting tip (14). For this purpose, a locking geometry having an undercut of a first type and a torque transmission geometry is provided on the shank. A locking projection having a torque transmission counter-geometry is provided on the cutting tip, wherein, in a mounted state, the locking projection engages in the undercut of the first type and the torque transmission counter-geometry abuts the torque transmission geometry. The rotary cutting tool further comprises a securing unit, which holds the cutting tip on the shank.

A rotary cutting tool, in particular a drill, is described, which comprises a shank and an exchangeable cutting tip (14). For this purpose, a locking geometry having an undercut of a first type and a torque transmission geometry is provided on the shank. A locking projection having a torque transmission counter-geometry is provided on the cutting tip, wherein, in a mounted state, the locking projection engages in the undercut of the first type and the torque transmission counter-geometry abuts the torque transmission geometry. The rotary cutting tool further comprises a securing unit, which holds the cutting tip on the shank.

A cutting tool body for indexable inserts, and a round milling insert, are configured not to cause floating or rattling upon mounting the milling insert. The tool body includes a recessed portion for fitting one of a plurality of protrusions thereto, the protrusions being formed in the milling insert to protrude in the radial direction. The recessed portion has two inner surfaces having curved portions disposed so the distance between them gradually decreases at the contact area between the recessed portion and the protrusion fitted thereto. The milling insert includes protrusions protruding radially, any of which fit into a recessed portion on a mounting seat of the tool body. The protrusions each have two curved outer surfaces arranged so the distance between them gradually decreases toward a tip of the protrusion, at the contact area between the protrusion and the recessed portion into which the protrusion is fitted.

An indexable tangential cutting insert (4) for a milling tool comprises two opposing side surfaces (13) and four identical lateral surfaces (16, 17) extending between the side surfaces. Each lateral surface of the insert is provided with a support surface (32) configured to be supported by on one hand a corresponding support face of a pocket (3) of a tool body providing an axial support to the insert in two of eight index positions and on the other a corresponding support face of the pocket providing a tangential support to the insert in two other of said eight index positions. Each lateral surface (16, 17) of the insert is provided with a single said second support surface (32) being concave as seen in a direction perpendicular to said side surfaces and extending diagonally across the lateral surface.

An indexable tangential cutting insert (4) for a milling tool comprises two opposing side surfaces (13) and four identical lateral surfaces (16, 17) extending between the side surfaces. Each lateral surface of the insert is provided with a support surface (32) configured to be supported by on one hand a corresponding support face of a pocket (3) of a tool body providing an axial support to the insert in two of eight index positions and on the other a corresponding support face of the pocket providing a tangential support to the insert in two other of said eight index positions. Each lateral surface (16, 17) of the insert is provided with a single said second support surface (32) being concave as seen in a direction perpendicular to said side surfaces and extending diagonally across the lateral surface.

A rotary cutting tool for slotting and a cutting insert replaceably mounted to such a rotary cutting tool. The cutting insert is mounted to an insert pocket of a tool body of the rotary cutting tool and is pressed by an elastic pressure portion provided in the tool body. The cutting insert has an upper surface, a lower surface and four peripheral side surfaces. The top and lower surfaces have an inclined surface pressed by the elastic pressure portion. When the cutting insert is mounted to the insert pocket, the inclined surface of the upper surface is pressed by the elastic pressure portion. The inclined surface is inclined with respect to a cross section of the cutting insert such that the lower surface and two peripheral side surfaces of the cutting insert are contacted with the insert pocket by pressure of the elastic pressure portion.

A cutting tool for face milling includes insert pockets for the fixing of cutting insert. The cutting inserts can be fixed in the insert pockets, wherein the cutting inserts and insert pockets are designed such that, when the cutting inserts are fixed within the corresponding insert pocket, each cutting insert presents: a primary and a secondary cutting edge. The intersection between the primary and the secondary cutting edge of one cutting insert being axially inwardly and radially outwardly offset from the intersection between the primary and the secondary cutting edge of another cutting insert. A lead angle defined between the primary and the secondary cutting edges is less than 30°.

A cutting tool for face milling includes insert pockets for the fixing of cutting insert. The cutting inserts can be fixed in the insert pockets, wherein the cutting inserts and insert pockets are designed such that, when the cutting inserts are fixed within the corresponding insert pocket, each cutting insert presents: a primary and a secondary cutting edge. The intersection between the primary and the secondary cutting edge of one cutting insert being axially inwardly and radially outwardly offset from the intersection between the primary and the secondary cutting edge of another cutting insert. A lead angle defined between the primary and the secondary cutting edges is less than 30°.