Abstract: A tool system for machining includes a tool body that has a first end for connecting to a machine tool and a second end having an end face on which a seat for an interchangeable cutting insert is formed. The cutting insert has an underside formed as an abutment surface, a top side formed as a rake face, and an encircling side face formed as a flank, and a cutting edge is formed at a transition from the top side to the encircling side face. The cutting insert is arranged on the seat such that the top side extends perpendicularly to the longitudinal axis of the tool body and the cutting edge protrudes beyond the outer circumference of the end face of the tool body in a radial direction with respect to the longitudinal axis with two usable cutting corners and cutting-corner portions adjoining the latter on both sides.

Abstract: A press arrangement and a method for producing and processing compacts from powder material include a controller, a press frame, a pressing unit being disposed on the press frame for pressing the compact and having a die with a cavity for receiving powder material, at least two punches which, together with the cavity, provide a mold for a compact and at least one drive unit for moving at least one punch relative to the other punch along a pressing axis. A further processing module has at least one processing unit for machining a compact by metal cutting. The controller at least partially ejects or removes a compact from the die after pressing and, after the ejection holds the compact clamped between the punches. The controller uses the processing unit to process a compact being at least partially ejected from the die and held clamped between the punches.

Abstract: A milling tool has a tool shank and a cutting head fastened to the forward end of the tool shank by way of a clamping connection. The clamping connection has a protrusion with clamping faces, and a recess with centering faces that interact with the clamping faces. Each of the centering faces has a first region where the centering faces are spaced from a longitudinal axis of the tool shank by a first distance and a second region at a smaller distance. The first region merges into the second region. The clamping faces of the protrusion are introducible into the recess between the first regions of the centering faces and are movable, by rotation of the cutting head about the longitudinal axis, into a clamping position in which the clamping faces interact in a force-fit with the second regions of the centering faces.

Abstract: A process for producing a hard material layer on a substrate includes depositing a TiCNB hard material layer by chemical vapor deposition (CVD) from a gas system including a titanium source, a boron source, at least one nitrogen source and at least one carbon source, in which the carbon source includes an alkane having at least two carbon atoms, an alkene or an alkyne. A cutting tool includes a substrate to which a TiCNB hard material layer has been applied, in which a ratio of carbon atoms (C) to nitrogen atoms (N) in the TiCxNyB1-x-y system deposited on the substrate is 0.70?X?1.0, preferably 0.75?X?0.85, and a polished section through the substrate and the hard material layer is substantially free of an eta phase following Murakami etching.

Abstract: A milling tool has a tool shank and a cutting head fastened to the forward end of the tool shank by way of a clamping connection. The clamping connection has a protrusion with clamping faces, and a recess with centering faces that interact with the clamping faces. Each of the centering faces has a first region where the centering faces are spaced from a longitudinal axis of the tool shank by a first distance and a second region at a smaller distance. The first region merges into the second region. The clamping faces of the protrusion are introducible into the recess between the first regions of the centering faces and are movable, by rotation of the cutting head about the longitudinal axis, into a clamping position in which the clamping faces interact in a force-fit with the second regions of the centering faces.

Abstract: A cutting insert with a substantially triangular or square basic form is particularly suited for face milling at high feed rates. It has convex cutting edges, which are each made up of a circular arc and at least one straight portion. Each cutting edge has, adjoining a cutting corner, a straight face cutting edge that merges with a main cutting edge, having 1 to 3 straight portions, a circular portion with a radius of at most 80% of the radius Ri of the inscribed circle. The cutting edges have an all-round cutting edge chamfer with a chamfer angle ?. This chamfer angle ? has along the cutting corners a value in the range from ?10° to ?20° and changes continuously along sub-portions of the face cutting edge and main cutting edge and along the circular portion to a constant value in the range from 0° to ?10°.

Abstract: A double-sided cutting insert for milling, in particular for face milling, includes first and second cutting edges each having alternately disposed main lips and secondary lips which each extend between active and passive cutting corners. Each main lip, starting from a first distance from a reference plane at an active cutting corner, extends in a manner dropping monotonously to a smaller, second distance from the reference plane at a passive cutting corner. That end of a secondary lip that adjoins the active cutting corner is in each case at a greater distance from the reference plane than the other end of the secondary lip that is remote from the active cutting corner. A circumferential side surface has, immediately adjacent the secondary lips, in each case planar secondary flanks and each secondary lip is formed at least regionally in a convex manner in plan view of the associated secondary flank.

Abstract: A cutting insert with a substantially triangular or square basic form is particularly suited for face milling at high feed rates. It has convex cutting edges, which are each made up of a circular arc and at least one straight portion. Each cutting edge has, adjoining a cutting corner, a straight face cutting edge that merges with a main cutting edge, having 1 to 3 straight portions, a circular portion with a radius of at most 80% of the radius Ri of the inscribed circle. The cutting edges have an all-round cutting edge chamfer with a chamfer angle ?. This chamfer angle ? has along the cutting corners a value in the range from ?10° to ?20° and changes continuously along sub-portions of the face cutting edge and main cutting edge and along the circular portion to a constant value in the range from 0° to ?10°.

Abstract: A rotary cutting tool has a main body with one or more segments exchangeably fastened to its circumference or internally thereof. The main body and the segment have fitting elements with mutually contacting faces. The exchangeable fastening is effected by a clamping piece, which is dovetailed on two sides and is additionally configured with a taper that wedges in the axial direction. The first dovetail-shaped part of the clamping piece engages in a corresponding recess of the main body and the second dovetail-shaped part of the clamping piece engages in a corresponding recess of the segment.

Abstract: A coated article, in particular a tool for cutting machining, has at least one titanium diboride layer which has been deposited by a thermal CVD process and has a thickness of at least 0.1 ?m. The titanium diboride layer has an extremely fine-grained microstructure with an average grain size of not more than 50 nm.

Abstract: A polygonal indexable insert has cutting edges that run rectilinearly or in a curved manner in a plane perpendicular to a locating surface and that fall from cutting corners having acute angles to cutting corners with obtuse angles following one another alternately. The cutting edges have a rake face which first of all falls and then rises with a back region. The back region together with a center part of the indexable insert forms an intersection curve. The intersection curve lies at a distance a from the starting point of the associated cutting edge in the region of the cutting corners in each case at their intersection with the angle bisector. It is at a distance b from the end point of the associated cutting edge in the region of the cutting corners in each case at their intersection with the angle bisector. The distance b is greater than the distance a.

Abstract: A polygonal indexable insert has cutting edges that run rectilinearly or in a curved manner in a plane perpendicular to a locating surface and that fall from cutting corners having acute angles to cutting corners with obtuse angles following one another alternately. The cutting edges have a rake face which first of all falls and then rises with a back region. The back region together with a center part of the indexable insert forms an intersection curve. The intersection curve lies at a distance a from the starting point of the associated cutting edge in the region of the cutting corners in each case at their intersection with the angle bisector. It is at a distance b from the end point of the associated cutting edge in the region of the cutting corners in each case at their intersection with the angle bisector. The distance b is greater than the distance a.

Abstract: A hard metal grade powder is produced from hard material, metal binder, and non-water-soluble pressing aid components, by forming a slurry containing the components and pure water as a liquid phase and then drying the slurry. Here, the hard material and metal binder components are first milled in water, to form a slurry. Then the pressing aid components are added to the slurry in the form of an emulsion produced with the aid of an emulsifier with the addition of water.