Abstract: A method for producing a machining segment from a first powdered matrix material and first hard material particles arranged according to a defined first particle pattern, includes: applying a powdered supporting material as a supporting layer with a melting temperature higher than the first matrix material, arranging the first hard material particles according to the defined first particle pattern in the supporting material with a depth of penetration, applying a first layer of the first matrix material to the first hard material particles and the supporting material and fusing the first layer by a powder bed fusion method, and performing a sequence of a plurality of steps N times, N?1, wherein, in a first step of the sequence, a layer of the first matrix material is applied to the layer structure, and in a second step of the sequence, the layer of the first matrix material is fused by the powder bed fusion method and connected to the layer structure.

Abstract: A method of producing a machining segment, in which a green body (51) is constructed from a machining zone (54), wherein the machining zone (54) is produced from a first metallic powder material (56) and hard material particles (58), the green body (51) is compacted under pressure with a compression pressure to result in a compact body and the compact body is sintered thermally at a sintering temperature to result in the finished machining segment, wherein the machining zone (54) is produced by layer-by-layer application of material layers of the first metallic powder material (56) and particle layers of the hard material particles (58), wherein the hard material particles (58) in one particle layer are placed into the previously applied material layer of the first metallic powder material (56).

Abstract: A method for producing a green body for a machining segment, where the machining segment is connectable to a basic body of a machining tool by an underside of the machining segment, includes placing first hard material particles in respective depressions of a first press punch in a defined particle pattern and applying a first matrix material to the placed first hard material particles.

Abstract: A method for producing a machining segment for a machining tool includes producing a green body by placing first hard material particles in respective depressions of a first press punch and applying a first matrix material to the placed first hard material particles. The green body is compacted by pressure between the first press punch, which forms an upper side of the machining segment, and a second press punch, which forms an underside of the machining segment, to form a compact body. The compact body is processed by temperature or by infiltration to produce the machining segment.

Abstract: A method for producing a machining segment for a machining tool, where the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, includes producing a green body by placing first hard material particles in depressions of a first press punch and applying a first matrix material to the first hard material particles. The green body is processed by hot pressing under temperature and pressure between the first press punch, which forms an upper side of the machining segment, and a second press punch, which forms the underside, to form the machining segment, where the upper side is opposite from the underside.

Abstract: A machining segment for a machining tool which is rotatable in a direction of rotation about an axis of rotation includes an underside where the machining segment is connectable to a basic body of the machining tool by the underside. The machining segment has a machining zone of a matrix material and a plurality of first hard material particles that are disposed in the matrix material in accordance with a defined particle pattern. An upper side of the machining segment, opposite from the underside, is divided into a plurality of machining regions, which include respective ones of the plurality of first hard material particles, and a plurality of matrix regions which are built up from the matrix material. At least one of the plurality of machining regions has with respect to an adjacent matrix region a projection that is greater than 400 ?m.

Abstract: A machining segment for a machining tool which is rotatable in a direction of rotation about an axis of rotation includes an underside where the machining segment is connectable to a basic body of the machining tool by the underside. A machining zone has a matrix material and a plurality of first hard material particles where the plurality of first hard material particles are disposed in the matrix material in accordance with a defined particle pattern. Each of the plurality of first hard material particles has a respective projection in relation to the matrix material on an upper side of the machining segment. The projection of at least one of the plurality of first hard material particles is greater than 400 ?m.

Abstract: A method for producing a machining segment for a machining tool, where the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, includes producing a green body by placing first hard material particles in a first matrix material in a defined particle pattern. The green body is compacted by pressure between a first press punch, which forms the underside, and a second press punch, which forms an upper side of the machining segment, to form a compact body. The compact body is processed by temperature or by infiltration to produce the machining segment. The second press punch has depressions in a pressing surface where an arrangement of the depressions corresponds to the defined particle pattern of the first hard material particles.

Abstract: A method for producing a machining segment for a machining tool, where the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, includes producing a green body by placing first hard material particles in a matrix material in a defined particle pattern, where the first hard material particles are placed in the matrix material with a respective projection with respect to the matrix material. The green body is compacted by pressure between a first press punch, which forms the underside, and a second press punch, which forms an upper side of the machining segment, to form a compact body, where the upper side is opposite from the underside. The compact body is processed by temperature or by infiltration to produce the machining segment.

Abstract: A method for producing a green body for a machining segment, where the machining segment is connectable to a basic body of a machining tool by an underside of the machining segment, includes placing first hard material particles in a matrix material in a defined particle pattern. The first hard material particles are placed in the matrix material with a respective projection with respect to the matrix material.

Abstract: A method for producing a machining segment for a machining tool, where the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, includes producing a green body by placing first hard material particles in a first matrix material in a defined particle pattern and processing the green body by hot pressing under temperature and pressure between a first press punch, which forms the underside, and a second press punch, which forms an upper side of the machining segment, to form the machining segment, where the upper side is opposite from the underside. The second press punch has depressions in a pressing surface and an arrangement of the depressions corresponds to the defined particle pattern of the first hard material particles.

Abstract: A method for producing a machining segment for a machining tool, where the machining segment is connectable to a basic body of the machining tool by an underside of the machining segment, includes producing a green body by placing first hard material particles in a matrix material in a defined particle pattern, where the first hard material particles have a projection with respect to the matrix material. The green body is processed by hot pressing under temperature and pressure between a first press punch, which forms the underside, and a second press punch, which forms an upper side of the machining segment, to form the machining segment, where the upper side is opposite from the underside.

Abstract: A method of producing a machining segment, in which a green body (51) is constructed from a machining zone (54), wherein the machining zone (54) is produced from a first metallic powder material (56) and hard material particles (58), the green body (51) is compacted under pressure with a compression pressure to result in a compact body and the compact body is sintered thermally at a sintering temperature to result in the finished machining segment, wherein the machining zone (54) is produced by layer-by-layer application of material layers of the first metallic powder material (56) and particle layers of the hard material particles (58), wherein the hard material particles (58) in one particle layer are placed into the previously applied material layer of the first metallic powder material (56).

Abstract: A drill ring for a cylindrical core drill bit is disclosed. The drill ring includes at least two ring segments which are constructed from a sintered powder mixture and diamond particles. The diamond particles are arranged on ablation tracks in a plane perpendicular to the cylinder axis and the ring segments are connected to each other on their lateral edges.

Abstract: A method for producing a drill ring for a core drill bit is disclosed. The method includes constructing at least two green parts from encapsulated diamond particles, the diamond particles being covered by a powder mixture. The green parts are formed into ring segments under the effect of pressure and the ring segments are annularly assembled and sintered under temperature action to form a continuous drill ring.

Abstract: A method for manufacturing a continuous drill ring for a core drill bit is disclosed. The method includes forming at least two green compacts in layers in a direction of formation between a bottom side and a top side by successively applying powder layers containing a powder mixture and diamond layers containing diamond particles that are arranged in a set pattern, shaping the green compacts into ring segments under the effect of pressure, sintering the ring segments under the effect of heat, and combining the sintered ring segments in a circular manner and joining the same in a frictionally engaging or integrally bonding manner at the lateral edges thereof so as to obtain the continuous drill.

Abstract: A method for manufacturing a continuous drill ring for a core drill bit is disclosed. The method includes forming at least two green compacts in layers in a direction of formation between a bottom side and a top side by successively applying powder layers containing a powder mixture and diamond layers containing diamond particles that are arranged in a set pattern. The green compacts are shaped into ring segments under the effect of pressure. The ring segments are joined in a circular manner and they are sintered under the effect of heat so as to obtain a continuous drill ring.

Abstract: An apparatus for microsurgical needle suture attachment includes a clamp for holding a needle such that the needle aperture remains in a fixed position; at least one guide member defining an angled guide area having a relatively wide portion and a vertex portion, the vertex portion being aligned with the fixed position of the needle aperture; a transport mechanism for advancing a suture end portion into the relatively wide portion of the guide member(s); and a deflection spring for moving the suture end portion into the vertex portion of the angled guide area.