Abstract: A clamping block receives a parting blade having an internal coolant guide. The clamping block includes a parting blade seat having a contact face for a lateral face of the parting blade. The parting blade may be received in a first installation direction and in a second installation direction. A first coolant exit opening for transferring coolant into the parting blade in the first installation direction, and a second coolant exit opening for transferring coolant into the parting blade in the second installation direction, are configured on the contact face. A first internal coolant duct structure connects the first coolant exit opening so as to communicate with at least two different first coolant entry openings, and a second internal coolant duct structure connects the second coolant exit opening so as to communicate with at least two different second coolant entry openings.

Abstract: A cutting machining tool for metal-containing materials has a base material composed of cemented hard material with hard material particles embedded in a ductile metallic binder. The metallic binder is a Co—Ru alloy and the hard material particles are formed at least predominantly by tungsten carbide, having an average grain size of the tungsten carbide of 0.1-1.2 ?m. The cemented hard material has a (Co+Ru) content of 5-17% by weight of the cemented hard material, a Ru content of 6 16% by weight of the (Co+Ru) content, a Cr content of 2-7.5% by weight of the (Co+Ru) content, a content of Ti, Ta and/or Nb of in each case <0.2% by weight of the cemented hard material and a V content of <0.3% by weight of the cemented hard material.

Abstract: A cutting machining tool for metal-containing materials has a base material composed of cemented hard material with hard material particles embedded in a ductile metallic binder. The metallic binder is a Co—Ru alloy and the hard material particles are formed at least predominantly by tungsten carbide, having an average grain size of the tungsten carbide of 0.1-1.2 ?m. The cemented hard material has a Co+Ru content of 5-17% by weight of the cemented hard material, a Ru content of 6-16% by weight of the Co+Ru content, a Mo content in the range 0.1-3.0% by weight of the cemented hard material, a content of Ti, Ta and/or Nb of in each case <0.2% by weight of the cemented hard material, and a V content of <0.3% by weight of the cemented hard material.

Abstract: A cutting insert for machining has a substantially cylindrical main body with an axis, a lateral flank and opposing rake faces. Cutting edges are formed at the intersection of the flank and rake faces. The cutting edges have, in the direction of the axis, in each case at least two convexly curved sections which are connected together by concavely curved or substantially straight sections.

Abstract: A drill cutting insert has a cutting edge at a transition between a side surface and a top side which is formed with n identical cutting corners and n identical partial cutting edges —with n?{3, 4} —extending between the cutting corners. Each of the n partial cutting edges has: adjoining a first cutting corner, a main lip which is straight in plan view of the top side; adjoining the other cutting corner, a secondary lip which is straight in plain view of the top side, and a transition section, via which the main lip and the secondary lip merge into one another and which has a convex section adjoining the main lip and a concave section adjoining the secondary lip. The main and secondary lips enclose on the outside an angle a ?<180° in plan view of the top side.

Abstract: A cutting tool has a main tool body and at least one insert seat disposed thereon. The seat has a bottom surface for mounting a cutting insert, and further has a dowel pin, which penetrates a through-hole of the mounted cutting insert and the bottom surface and can be fixed to the main tool body. A center longitudinal axis of the fixed dowel pin is arranged at an acute angle with respect to the bottom surface. The dowel pin contains a spherical segment for mounting on a bearing surface of the through-hole. The surface of the spherical segment is interrupted by a segment groove.

Abstract: A drill cutting insert has a cutting edge at a transition between a side surface and a top side which is formed with n identical cutting corners and n identical partial cutting edges—with n ? {3, 4}—extending between the cutting corners. Each of the n partial cutting edges has: adjoining a first cutting corner, a main lip which is straight in plan view of the top side; adjoining the other cutting corner, a secondary lip which is straight in plain view of the top side, and a transition section, via which the main lip and the secondary lip merge into one another and which has a convex section adjoining the main lip and a concave section adjoining the secondary lip. The main and secondary lips enclose on the outside an angle ?<180° in plan view of the top side.

Abstract: A cutting insert for a machining cutting tool. In a radial direction Q, which extends in a main plane H from the cutting corner to a center Z of the cutting insert, the following are formed in order: a falling cutting surface, a chip guiding stage base adjacent the cutting surface, a first chip guiding stage, which is adjacent to the chip guiding stage base and has a first surface rising from the chip guiding stage base and a first plateau adjacent thereto. A second chip guiding stage has a second surface rising from the first plateau and a second plateau adjacent thereto. A third chip guiding stage has a third surface rising from the second plateau and a third plateau adjacent thereto.

Abstract: A cutting insert for machining has a substantially cylindrical main body with an axis, a lateral flank and opposing rake faces. Cutting edges are formed at the intersection of the flank and rake faces. The cutting edges have, in the direction of the axis, in each case at least two convexly curved sections which are connected together by concavely curved or substantially straight sections.

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 cutting insert for a machining cutting tool. In a radial direction Q, which extends in a main plane H from the cutting corner to a center Z of the cutting insert, the following are formed in order: a falling cutting surface, a chip guiding stage base adjacent the cutting surface, a first chip guiding stage, which is adjacent to the chip guiding stage base and has a first surface rising from the chip guiding stage base and a first plateau adjacent thereto. A second chip guiding stage has a second surface rising from the first plateau and a second plateau adjacent thereto. A third chip guiding stage has a third surface rising from the second plateau and a third plateau adjacent thereto.

Abstract: A cutting tool has a main tool body and at least one insert seat disposed thereon. The seat has a bottom surface for mounting a cutting insert, and further has a dowel pin, which penetrates a through-hole of the mounted cutting insert and the bottom surface and can be fixed to the main tool body. A center longitudinal axis of the fixed dowel pin is arranged at an acute angle with respect to the bottom surface. The dowel pin contains a spherical segment for mounting on a bearing surface of the through-hole. The surface of the spherical segment is interrupted by a segment groove.

Abstract: A tool for machining is made from a hard-metal, cermet or ceramic base material and a single-layer or multi-layer hard material coating on the base material. An additional coating of one or more metals from the group of aluminum, copper, zinc, titanium, nickel, tin or base alloys of these metals is applied to the hard material coating.

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 cutting insert includes a plurality of consecutively disposed, interlinked individual cutting inserts that can be brought into use successively through a respectively interposed predetermined breaking point by detaching a respectively preceding individual cutting insert in cutting use. The cutting insert has a blade-shaped construction with lower and upper bearing surfaces for being held in an elongated cutout with lower and upper opposing surfaces in a basic tool body of a grooving and cut-off tool or disk milling cutter. Each individual cutting insert is provided with a positioning device that cooperates with a complementary positioning device of the basic tool body. A grooving and cut-off tool or disk milling cutter and a wrench for the cutting insert, are also provided.

Abstract: A tool for machining is made from a hard-metal, cermet or ceramic base material and a single-layer or multi-layer hard material coating on the base material. An additional coating of one or more metals from the group of aluminum, copper, zinc, titanium, nickel, tin or base alloys of these metals is applied to the hard material coating.

Abstract: A cutting insert includes a plurality of consecutively disposed, interlinked individual cutting inserts that can be brought into use successively through a respectively interposed predetermined breaking point by detaching a respectively preceding individual cutting insert in cutting use. The cutting insert has a blade-shaped construction with lower and upper bearing surfaces for being held in an elongated cutout with lower and upper opposing surfaces in a basic tool body of a grooving and cut-off tool or disk milling cutter. Each individual cutting insert is provided with a positioning device that cooperates with a complementary positioning device of the basic tool body. A grooving and cut-off tool or disk milling cutter and a wrench for the cutting insert, are also provided.

Abstract: A milling tool has a cutting edge geometry with a main cutting edge, a cutting corner, optionally with a bordering planar cutting edge segment, and a secondary cutting edge. The tool is used for milling to achieve the smoothest level surface possible parallel to the rotational axis of the milling tool. Each main cutting edge is formed to result in a generatrix of the envelope curve described by the rotation of the milling tool that has a first outwardly curving segment and a second inwardly curving segment. The first segment increases in its distance from the rotational axis from the beginning of the segment to the end of the segment. The distance of the second segment decreases from its beginning towards its end. The tangents at each point of the second segment encompass an angle ?2 of more than 0° and up to 3° with a parallel to the rotational axis.

Abstract: A milling tool has a cutting edge geometry with a main cutting edge, a cutting corner, optionally with a bordering planar cutting edge segment, and a secondary cutting edge. The tool is used for milling to achieve the smoothest level surface possible parallel to the rotational axis of the milling tool. Each main cutting edge is formed to result in a generatrix of the envelope curve described by the rotation of the milling tool that has a first outwardly curving segment and a second inwardly curving segment. The first segment increases in its distance from the rotational axis from the beginning of the segment to the end of the segment. The distance of the second segment decreases from its beginning towards its end. The tangents at each point of the second segment encompass an angle &agr;2 of more than 0° and up to 3° with a parallel to the rotational axis.

Abstract: A tool for machining is made from a hard-metal, cermet or ceramic base material and a single-layer or multi-layer hard material coating on the base material. An additional coating of one or more metals from the group of aluminum, copper, zinc, titanium, nickel, tin or base alloys of these metals is applied to the hard material coating.