AB Sandvik Coromant

A milling tool is provided for chamfering flank edges of teeth on a cylindrical toothed workpiece having an elongated tool body with a rear part configured for attachment to a machine, a cutting part and an elongated shank part, which carries the cutting part and extends from the cutting part towards the rear part. The cutting part includes a first cutting edge facing away from the rear part and a second cutting edge facing the rear part and located closer to the rear part than the first cutting edge. The distance between the second cutting edge and an axis of rotation of the tool body gradually increases from a rear end of the cutting edge to a front end thereof, the rear end being located at a longer distance from the axis of rotation than a radially outermost part of a peripheral surface of the shank part.

A turning tool for machining a metal workpiece includes a tool body having an outer peripheral surface, a front end, a rear end, and a longitudinal axis extending from the front end to the rear end. The turning tool further includes a sensor module having at least one sensor for measuring a machining parameter. The sensor module is mounted on a mounting surface portion of the outer peripheral surface of the tool body. The sensor module has a first maximum extension extending from a first central plane in a direction that is codirectional and parallel to a first radial direction, and a second maximum extension extending from a second central plane in a direction that is codirectional and parallel to a second radial direction, wherein the first maximum extension is greater than the second maximum extension.

A turning tool for machining a metal workpiece is provided. The turning tool includes a tool body including an outer peripheral surface, a front end, a rear end, and a longitudinal axis extending from the front end to the rear end. The turning tool further includes a sensor module including at least one sensor for measuring a machining parameter. The sensor module is mounted on a mounting surface portion of the outer peripheral surface of the tool body such that the sensor module extends radially outward from the mounting surface portion in one or more radial directions with respect to the longitudinal axis. The sensor module includes a housing having one or more laterally facing outer side wall portions made of a first material and a forwardly facing outer front wall portion made of a second material, wherein the second material is more wear resistant than the first material.

A coated cutting tool is CVD coated and includes a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide includes Ni, and a coating. The CVD coating includes an inner layer of TiN and a subsequent layer of TiCN, wherein the TiCN is composed of crystal grains and wherein the grain size of the TiCN layer as measured along a line in a direction parallel to the surface of the substrate at a position of 1 μm from the TiN layer is about 0.10-0.30 μm.

The present invention relates to a coated cutting tool including a substrate at least partially coated with a coating. The coating includes a layer of Ti(C,N), a layer of α-Al 2 O 3 and therebetween a bonding layer. The Ti(C,N) layer has a thickness of 3-20 μm and includes an inner Ti(C,N) portion, T1, followed by an outer Ti(C,N) portion, T2, as seen in a direction from the substrate towards the outer surface of the tool. The thickness of the inner portion T1 is 2.5-15 μm and the thickness of the outer portion T2 is 0.5-5 μm. The average grain width of the Ti(C,N) grains in T1 and in T2 is smaller than 300 nm. The atomic ratio C/N in the inner Ti(C,N) portion, T1, is 1.50-1.60, and the atomic ratio C/N in the outer Ti(C,N) portion, T2, is 1.25-1.40.

A coated cutting tool including a substrate and a coating is provided. The coating includes a nano-multilayer of alternating layers of a first nanolayer being Ti 1-x Al x N, 0.35≤x≤0.70, and a second nanolayer being Ti 1-y Al y N, 0.12≤y≤0.25. A sequence of one first nanolayer and one second nanolayer forms a layer period. The average layer period thickness in the nano-multilayer is ≤7 nm. The nanomultilayer has a columnar structure with an average column width of ≤70 nm.

A method of making a tool having a joining a maraging steel joining partner and a cemented carbide joining partner by brazing and a tool made according to the method is provided. The method includes depositing a Ni coating onto the maraging steel joining partner prior to applying the filler material having at least 70 wt % Cu. The braze joint shows excellent shear strength.

A method for producing a coated cutting tool for metal machining having a substrate and coating is provided. The coating includes at least one layer of (Ti,Al)N having a cubic crystal phase. The method includes the deposition of a layer of Ti 1-x Al x N, 0.70≤x≤0.98, the Ti 1-x Al x N having cubic crystal phase. The layer of Ti 1-x Al x N is deposited by cathodic arc evaporation at a vacuum chamber pressure of from 7 to 15 Pa of N 2 gas, using a DC bias voltage of from −200 to −400 V and using an arc discharge current of from 75 to 250 A. A coated cutting tool for metal machining having a coating including a (Ti,Al)N multi-layer of alternating sub-layers of at least Ti 1-y Al y N and Ti 1-z Al z N, 0.35≤y≤0.65 and 0.80≤z≤0.98, with only cubic phase present is also provided.

A cutting tool includes a substrate at least partially coated with a coating. The substrate is a cemented carbide, cermet or ceramic. The coating includes a layer of Ti(C,N), a layer of Al 2 O 3 and there between a bonding layer. The Ti(C,N) layer is composed of columnar grains, wherein an average grain size D 422 of the Ti(C,N) layer is 25-50 nm, and wherein the Ti(C,N) layer includes a portion B1 that is adjacent to the bonding layer. An average grain size of the Ti(C,N) grains in portion B1 is larger than the average grain size D 422 in the whole Ti(C,N) layer. In the portion B1 of Ti(C,N) layer the Ti(C,N) grains has an average grain size of 140-300 nm.

A cutting tool includes a supporting body and a cBN or PCD cutting edge tip attached to the supporting body via a 5-150 μm braze joint. The supporting body is cemented carbide having 3-25 wt % of a metallic binder, optionally up to 25 wt % of carbides or carbonitrides of one or more elements of group 4, 5, or 6, and the rest WC. The metallic binder includes at least 40 wt % Ni, and the braze joint has, in the order from the supporting body, a first layer of TiC situated next thereto, with an average thickness of 10-400 nm, a second layer, with an average thickness of 0.5-8 μm, having in average at least 5 wt % metallic Ni, in average 25-60 wt % metallic Cu and in average 15-45 wt % metallic Ti, and a third layer, with an average thickness of 4-145 μm, having metallic Ag and metallic Cu.