Abstract: A milling insert (1) for chip removing machining, has a positive basic geometry, including at least three main cutting edges (H1-H3) and three associated minor cutting edges (B1-B3), the milling insert (1) on the underside (L1) thereof being provided with at least two, mutually intersecting, sets of rectilinear grooves/notches, the sets of grooves/notches defining essentially pyramidal projecting parts (P), the sets of grooves/notches intersecting opposite side surfaces (S1-S6) of the milling insert (1). A face milling cutter equipped with such milling inserts is described. Characteristic of the milling insert (1) is that when the milling insert is seen in a planar view, the rectilinear direction (R1-R3) defined by each set of grooves/notches forms a right angle with the tangent of a minor cutting edge (B1-B3).

Abstract: A method of making cutting tool inserts with high demands on dimensional accuracy includes: mixing by milling of powders forming hard constituents and binder phase, forming the powder mixture to bodies of desired shape, sintering the formed bodies, grinding with high accuracy the sintered bodies to inserts with desired shape and dimension, optionally edge rounding of cutting edges, and providing the ground inserts with a wear resistant non-diamond or non-diamond-like coating. According to the method, the ground inserts are heat treated prior to the coating operation in an inert atmosphere or vacuum or other protective atmosphere below the solidus of the binder phase for such a time that the micro structure of the surface region is restructured without causing significant dimensional changes. In this way inserts with unexpected improvement of tool life and dimensional accuracy have been achieved.

Abstract: A slot-milling tool includes a slot-milling insert to be on-edge mounted to a toolholder of the slot-milling tool. The insert includes a first side surface, a second side surface, and a plurality of edge surfaces between the first and second side surfaces, each edge surface intersecting with another edge surface at a corner and forming a cutting edge. The first and second side surfaces each have a side insert supporting surface for abutting against an abutment surface in a toolholder, and the insert has reflective symmetry about a central plane extending through the edge surfaces midway between the first and second side surfaces. A chipbreaker is provided on each edge surface and corresponds to each cutting edge, and each chipbreaker includes a recess beneath the cutting edge and a portion projecting toward the cutting edge, the projecting portion defining first and second chip deflecting recesses between the projecting portion and the first and second side surfaces, respectively.

Abstract: A method of producing hard wear resistant layer with improved wear resistance. The method is a reactive arc-evaporation based process using a cathode including as main constituent at least one phase of a refractory compound Mn+1AXn (n=1, 2 or 3), wherein M is one or more metals selected from the groups IIIB, IVB, VB, VIB and VIIB of the periodic table of elements, A is one or more elements selected from the groups IIIA, IVA, VA and VIA of the periodic table of elements, and wherein X is carbon and/or nitrogen.

Abstract: A tool for rotary cutting machining includes a tool body and a replaceable cutting head detachably attachable to the tool body. The cutting head has a coupling portion which is receivable in a space between two axially projecting coupling legs of the tool body. Cylindrical internal gripping surfaces are arranged in said space and designed for engagement with corresponding cylindrical external gripping surfaces of the cutting head. The gripping surfaces of the cutting head and the gripping surfaces of the tool body are dimensioned so as to prevent, by engagement with each other, the cutting head from being displaced in axial direction away from the tool body when the cutting head is attached to the tool body. A tool body and a cutting head included in such a tool are also disclosed.

Abstract: A cutting insert includes a first chip surface, a second surface on an opposite side of the insert from the first chip surface, and a side surface extending between the first chip surface and the second surface, at least part of one first cutting edge being defined by an intersection of the side surface with the first chip surface. The side surface includes at least one recess, the recess including an insert supporting surface for supporting the insert relative to a protruding abutment surface on a toolholder and a flat auxiliary insert supporting surface for supporting the insert relative to a non-protruding, flat abutment surface. A cutting tool is also provided.

Abstract: A cutting tool insert includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel. A hard and wear resistant coating, having at least one layer, to which an (Al,Cr)2O3 layer is applied. This insert is particularly useful for machining of steel and stainless steel. The coating with a total thickness of 2-20 ?m has one or several layers, at least one of which is an (Al,Cr)2O3 layer with a thickness of 1-5 ?m having a corundum phase crystalline structure and a composition (Al1-yCry)2O3 with 0.4?y?0.6. The (Al,Cr)2O3 layer has a fiber texture with rotational symmetry in the direction of the coated surface normal to an inclination angle, ?, of the basal planes relative to the coated surface normal or the inclination angle, ?, for the highest peak in the pole plot with 70° <?<90° .

Abstract: A cutting tool includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and on which at least one of the functioning parts of the surface thereof, a hard and wear resistant coating is applied. The coating includes a polycrystalline laminar, multilayered structure of metal nitride compounds, in a repetitive form . . . MeN/(Ti1-xAlx)N/MeN/(Ti1-xAlx)N/MeN/(Ti1-xAlx)N/MeN/(Ti1-xAlx)N . . . of cubic structured (Ti1-xAlx)N layers where 0.3<x<0.95 and cubic structured MeN layers where Me is one or more of the metal element Ti, Zr, Hf, V, Nb, Ta, Mo and Al. The laminated structure has a repeat period, ?, of 5 nm??<20 nm, a layer thickness relation of 1/10<(dMeN/d(Ti,Al)N)<1/3 and a thickness dMeN?1 nm that is essentially constant throughout its total thickness up to 20 ?m.

Abstract: A cutting tool insert includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and a hard and wear resistant coating, including one or several layers, at least one of which is an (Al,Cr)2O3 layer. The coating, with a total thickness of 2-20 ?m includes one or several layers, at least one of which is an (Al,Cr)2O3 layer with a thickness of 1-5 ?m having a corundum phase crystalline structure and a composition (Al1-yCry)2O3 with 0.5?y?0.7. The (Al,Cr)2O3 layer has a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, ?, of the basal planes relative to the coated surface normal or the inclination angle, ?, for the highest peak in the pole plot with 20°<?<55°.

Abstract: A cutting tool insert includes a body of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and a hard and wear resistant coating including at least one metal nitride layer. The coating includes at least one layer of a thermally stabilized cubic structured (Ti1?x+z)SixMez)N phase with 0.04<x<0.20 and 0<z<0.10, with a constant elemental composition throughout the layer where Me is one or more of the metal elements Y, Hf, Nb, Ta, Mo, W, Mn, Fe and Zn with a thickness of 0.5 to 10 ?m. The layer is deposited using cathodic arc evaporation and is particularly useful for machining of stainless steel and super alloys.

Abstract: A tool with a replaceable tip includes a tool body including a tip holding portion, a tool tip having a shank portion adapted to be disposed proximate the tip holding portion comprising a wall defining an axial opening, the wall having at least one radial opening, at least one locking element being disposed in the radial opening, and, as a clamping ring is turned about the longitudinal axis of the tool body, a locking element contacting surface of the clamping ring contacts the locking element and urges it through the radial opening and into the recess in the tool tip. A method of retaining a tool tip is also disclosed.

Abstract: A cutting tool includes a cutting insert comprising a top surface, a bottom surface, a clamping surface for abutting a clamp, a cutting edge, a hole extending through the insert from the bottom surface to the clamping surface, and a channel extending from the clamping surface to proximate the cutting edge, and a tool holder comprising a tool holder body having a pocket for receiving the insert, a clamp for contacting the clamping surface and clamping the insert in the pocket, and a tool holder passage in the body in flow communication with the hole in the insert. A cutting insert is also provided.

Abstract: An ?-Al2O3 coated cutting tool insert combining a cemented carbide with a binder phase enriched surface zone and a textured ?-Al2O3-layer is disclosed. The ?-Al2O3 layer has a thickness ranging from about 2-9 ?m and is composed of columnar grains having a length/width ratio from about 2-12. It is characterized by a strong (104) growth texture and by low intensity of the (012), (110) and (113) diffraction peaks. The textured ?-Al2O3 is preferably deposited on an MTCVD Ti(C,N) layer having a thickness from about 2-10 ?m. When the alumina layer is the uppermost layer, it may be wet-blasted to an Ra value of <about 1 ?m, giving the tool a black and shiny appearance.

Abstract: A cutting insert includes a body having a first surface, a second surface, and an intermediate surface. The intermediate surface includes a generally cylindrical main surface and at least one recess surface extending radially inwardly from the main surface, the main surface and the recess surface extending between the first surface and the second surface. Cutting edges are defined by intersections between the main surface and the recess surface.

Abstract: A cutting tool insert includes a body of cemented carbide, cermet, ceramics, high speed steel (HSS), polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN), a hard and wear resistant coating is applied, grown by physical vapour deposition (PVD) such as cathodic are evaporation or magnetron sputtering. The coating includes at least one layer of (ZrxAl1-x)N with 0.05<x<0.30 with a thickness between 0.5 and 10 ?m. The layer has a nanocrystalline columnar microstructure consisting of a single cubic phase or a mixture of hexagonal and cubic phases. The insert is particularly useful in metal cutting applications generating high temperatures with improved edge integrity.

Abstract: Coated cemented carbide inserts (cutting tools), particularly useful for wet or dry machining of steels and stainless steels, are disclosed. The cutting tool insert is characterized by a cemented carbide substrate and a coating formed from an about 0.5 to 5 ?m thick innermost layer of (Ti,Al)N and an about 1 to 5 ?m thick layer of (Al,Cr)2O3.

Abstract: A cutting tool insert is formed from a cemented carbide body and a coating particularly useful in medium-rough to rough turning of stainless-steels and superalloys. The cemented carbide body is formed from cemented carbide with a composition of 7.0-12.0 wt-% Co, 5.0-11.0 wt-% cubic carbide forming metals from group IVb, Vb and VIb of the periodic table, preferably Ti, Nb and Ta, and balance WC with a 10-30 ?m essentially cubic carbide phase free and binder phase enriched surface zone. The coating includes an MTCVD Ti(C,N) as the first layer adjacent the body having a thickness of from >2.5 to 7.0 ?m, on top of which an ?Al2O3 layer is present, with a thickness of between 2.0 and 5.0 ?m, and a total thickness of the coating of between 5.5 and 9.5 ?m. The alumina layer has a (006) texture.

Abstract: Coated cemented carbide inserts are particularly useful for wet or dry milling steels. The inserts are formed by a cemented carbide body including WC, NbC and a W-alloyed Co binder phase, and a coating including an innermost layer of TiCxNyOz, with equiaxed grains, a layer of TiCxNyOz with columnar grains and a layer of ?-Al2O3.

Abstract: The present invention relates to a cutting tool insert comprising a cemented carbide body and a coating particularly useful in fine to medium-rough turning of stainless-steels. The cemented carbide body consists of a cemented carbide with a composition of 5.0-9.0 wt-% Co, 5.0-11.0 wt-% cubic carbide forming metals from group IVb, Vb and VIb of the periodic table, preferably Ti, Nb and Ta, and balance WC with a 10-30 ?m essentially cubic carbide phase free and binder phase enriched surface zone. The coating comprises an MTCVD Ti(C7N) as the first layer adjacent the body having a thickness of from 2.5 to 7.0 ?m, on top of which an ?-Al2O3 layer is present, with a thickness of between 2.0 and 5.0 ?m, and a total thickness of the coating between 5.5 and 9.5 ?m. The alumina layer has a (006) texture.

Abstract: Forming coated cemented carbide inserts, particularly useful in fine turning of super alloys. The inserts are characterized by a composition of a cemented carbide of WC, about 4.0 wt-% Co to about 7.0 wt-% Co, about 0.25 wt-% Cr to 0.50 wt-% Cr, and a coercivity (Hc) of about 28 kA/m to about 38 kA/m. The coating comprises a single (Ti1-xSix)N-layer, where x is between about 0.1 and about 0.25, with a crystal structure of NaCl type and a total thickness between about 0.5 ?m and about 2.0 ?m with a strong (200)-texture.