Abstract: A method and a device for machining an elongated workpiece having a shaft extending in the direction of the workpiece longitudinal axis forms at least one groove with a defined groove surface on the workpiece by material removal by a laser beam directed with its beam axis onto the workpiece surface and guided along a laser path extending exclusively parallel to a groove profile curve corresponding to the intersection between the groove surface to be produced and a geometric plane that forms an angle ? with the workpiece longitudinal axis, where 90°???the angle of groove inclination. The distance between the curve and the path is predetermined such that the workpiece material located in the geometric plane on the path side facing away from the curve completely sublimates or vaporizes due to the laser beam power density when the beam is guided along the path.

Abstract: In a method for machining a cutting tool and a machining device for carrying out the method, the cutting tool includes a cutting tool body and at least one cutting insert with at least one cutting edge attached to the cutting tool body. A three-dimensional surface of the cutting tool is predetermined. Cutting edge boundary surfaces are determined from this surface, which form a surface of the cutting insert and are located adjacent to a cutting edge of the cutting insert. The machining device is controlled on the basis of these cutting edge boundary surfaces and removes material from the cutting insert in a targeted manner, whereby a collision between the cutting tool and a material removal device of the machining device is prevented.

Abstract: A method for producing a cutting tool including a tool body including a hard coating, the method comprising: applying the hard coating to the tool body at least in an area of a cutting edge, a flank, and a chipping surface; depositing the hard coating on a surface of the tool body, of the cutting tool in an area of the cutting edge, of the flank adjacent to the cutting edge, and of the chipping surface adjacent to the cutting edge; sharpening the cutting edge that is provided with the hard coating and that forms a dull rounded edge by partially removing the hard coating in the area of the flank of the cutting edge by laser machining to form a sharpened cutting edge so that an angle ? is enclosed between a first geometric plane in which a surface of the tool body extends.

Abstract: An apparatus for orienting and positioning a workpiece (4) relative to a laser beam (3) of a laser processing machine is proposed. The apparatus is equipped with an apparatus base (5), with a workpiece locating device (6) which receives the workpiece (4) to be machined and with a movement device (7) exhibiting at least three axes which moves the workpiece locating device (6) relative to the apparatus base (5). The movement device (7) is equipped with a rigid body (12) and with a first rotary drive which generates a torque around an axis of rotation B and drives the rigid body (12) to rotate around the axis of rotation B relative to the machine base (5). On the rigid body (12) is arranged a first linear drive which displaces a first carriage (13) on the rigid body (12) along the axis Xw.

Abstract: A tool magazine receives a plurality of tools which are provided for arrangement on a tool spindle of a machine tool, and a method for changing tools using a tool magazine. The tool magazine exhibits a guide rail arranged in a fixed position on a machine base, a magazine carriage displaceably mounted on the guide rail, a rotary drive arranged on the magazine carriage and having a magazine shaft which can be rotated around a shaft axis of rotation, at least two magazine wheels arranged non-rotatably on the magazine shaft and having a plurality of tool holders, and a transfer device linearly displaceable along a transfer axis transverse to the guide rail and which picks up a tool arranged on one of the tool holders of the magazine wheels and transports the tool to the tool spindle and back.

Abstract: An apparatus for orienting and positioning a workpiece (4) relative to a laser beam (3) of a laser processing machine is proposed. The apparatus is equipped with an apparatus base (5), with a workpiece locating device (6) which receives the workpiece (4) to be machined and with a movement device (7) exhibiting at least three axes which moves the workpiece locating device (6) relative to the apparatus base (5). The movement device (7) is equipped with a rigid body (12) and with a first rotary drive which generates a torque around an axis of rotation B and drives the rigid body (12) to rotate around the axis of rotation B relative to the machine base (5). On the rigid body (12) is arranged a first linear drive which displaces a first carriage (13) on the rigid body (12) along the axis Xw.

Abstract: A tool magazine receives a plurality of tools which are provided for arrangement on a tool spindle of a machine tool, and a method for changing tools using a tool magazine. The tool magazine exhibits a guide rail arranged in a fixed position on a machine base, a magazine carriage displaceably mounted on the guide rail, a rotary drive arranged on the magazine carriage and having a magazine shaft which can be rotated around a shaft axis of rotation, at least two magazine wheels arranged non-rotatably on the magazine shaft and having a plurality of tool holders, and a transfer device linearly displaceable along a transfer axis transverse to the guide rail and which picks up a tool arranged on one of the tool holders of the magazine wheels and transports the tool to the tool spindle and back.

Abstract: A device for centering a longitudinal workpiece fixed on a spindle includes a support body linearly displaced along a support body axis. The support body and support body axis are aligned substantially parallel to an axis of rotation of the spindle. A first support element movably arranged on the body supports the workpiece or a workpiece receiving part, and a second support element movably arranged on the body supports the workpiece or a workpiece receiving part. The first support element can be linearly displaced in a first direction and is rotatably arranged about a first axis of rotation on the support body and the second support element can be linearly displaced in a second direction different from the first direction and is rotatably arranged about a second axis of rotation on the support body.

Abstract: Disclosed is a device for workpiece centring for a longitudinal workpiece (2) that is fixed on a spindle (1), comprising a support body (11, 47, 73, 103), which can be linearly displaced along a support body axis (7), wherein the support body (11, 47, 73, 103) and the support body axis (7) can be aligned substantially parallel to an axis of rotation (8) of the spindle (1), a first support element (9, 45, 71, 91, 111) which is movably arranged on the body and which supports, from a first side, the workpiece (2) or a workpiece receiving part (60) that receives the workpiece (2), and a second support element (10, 46, 72, 92, 112) which is movably arranged on the body and which supports, from a second side, the workpiece (2) or a workpiece receiving part (60) that receives the workpiece (2), wherein the first support element (9, 45, 71, 91, 111) can be linearly displaced in a first direction of displacement (23, 48) and is rotatably arranged about a first axis of rotation (23a, 48a) on the support body (11, 47, 7

Abstract: An apparatus is provided for checking the shape of a part having a portion which is a cylinder of revolution around an axis and a reference end face. The apparatus includes a base and a support arrangement mounted on the base for receiving the cylinder portion and comprising two V-shaped pieces. A positioning arrangement is provided for positioning the part axially with respect to the reference end face. A mechanism is provided for driving the part in rotation about the axis. The positioning arrangement comprises a rectilinear portion with an hemispheric end providing an abutment for the end face. The rectilinear portion is mounted slidingly on the base along a direction which forms, with respect to the axis, an angle corresponding to the half of the angle of the V-shaped pieces. An adjustment means is provided for adjusting the position of the rectilinear portion in a manner which maintains the abutment point of the hemispheric end with the end face on the axis.

Abstract: The part (1) to be machined, which exhibits an axis of revolution (aa') is secured in a rotatable spindle (11) forming part of a headstock (10) movable in translation on the framework of the grinding machine according to a longitudinal axis (X) parallel to the axis of revolution (aa'). A support (16) fixed to the framework and in the immediate proximity of which is arranged a grindstone (18), serves as lateral support to a portion of the part (1) to be machined. Grinding of the part (1) by the grindstone (18) over an arbitrary length capable of exceeding 1000 times its diameter, is effected by displacing the headstock (10) by such length in the sense of the longitudinal axis (X).

Abstract: The part (1) to be machined, which exhibits an axis of revolution (aa') is secured in a rotatable spindle (11) forming part of a headstock (10) movable in translation on the framework of the grinding machine according to a longitudinal axis (X) parallel to the axis of revolution (aa'). A support (16) fixed to the framework and in the immediate proximity of which is arranged a grindstone (18), serves as lateral support to a portion of the part (1) to be machined. Grinding of the part (1) by the grindstone (18) over an arbitrary length capable of exceeding 1000 times its diameter, is effected by displacing the headstock (10) by such length in the sense of the longitudinal axis (X).