Abstract: The present disclosure relates to a gear cutting machine for gear cutting a workpiece, in particular a toothed wheel, by form milling having at least one cutter head for mounting at least one end mill, wherein the cutter head or the end mill and/or the workpiece mount are adjustable and the end mill axis can be aligned approximately parallel to the machined tooth flank of the clamped workpiece, and wherein the cutter axis can be applied to the flank contour and the end mill has an outer contour corresponding to the flank contour.

Abstract: A sanding machine, with a machine bed, two vertical supports arranged laterally at the machine bed, with a bridge displaceable on the vertical supports in a horizontal, linear Y-axis, with an X-sled displaceable at the bridge in a horizontal, linear X-axis, with a Z-sled displaceable at the X-sled in a vertical, linear Z-axis, with an operating spindle supported at the Z-sled, particularly a sanding spindle, with a machine table and a magazine wheel comprising tool holders for sanding disks, and which is rotational about an axis parallel in reference to the Z-axis, with the operating spindle being able to remove a tool from a tool holder and place it there when this tool holder is rotated into an exchange position, with the tool magazine being arranged underneath the machine table and in the area of the exchange position.

Abstract: A portable boring machine includes: a transmission unit comprising a first electric motor having an axis of rotation (B) and a distribution block of the motion imparted by said electric motor to a tools shaft supporting means for boring and welding and having an axis of rotation (C); a centralized unit comprising a supporting shaft for advancement of said tools shaft formed by a hollow cylindrical tube internally comprising an externally threaded screw tube, and a second centralized electric motor adapted to manage said advancement; means for coupling and decoupling said transmission unit from said centralized unit. The portable boring machine further comprises an advancement system of said screw tube configured for converting the rotary motion imparted by said electric motor in straight linear motion of said screw tube along said axis (C).

Abstract: A numerical control machine-tool includes: a ground-resting base plate; a movable supporting column rising cantilevered from the base plate in a substantially vertical direction and movable horizontally on said base plate; a first electronic-controlled drive assembly for moving the supporting column along the base plate; a head-carrier slide fixed in vertically sliding manner in a straight longitudinal slit extending along the front face of the supporting column parallel to the longitudinal/vertical axis of the supporting column; a second electronic-controlled drive assembly for moving the head-carrier slide along the supporting column; a straight supporting beam inserted in an axially sliding manner into the head-carrier slide and cantilevered juts out from the front face of the supporting column while remaining substantially parallel to the ground; and a third electronic-controlled drive assembly for moving the supporting beam forwards and backwards with respect to the head-carrier slide parallel to the bea

Abstract: An embodiment of a circular, annular tool magazine shelf of a tower construction, comprises a base frame adapted for receiving a tool shelf which has a plurality of immovable tool deposit plates, arranged in vertical succession and in a circular ring, adapted for machining one or more tools, and a power-driven tool handling system adapted for transporting tools between the tool magazine shelf and a machine-side pick-up tool magazine store. The magazine shelf also comprises a spindle tower which is mounted rotatably about a vertical rotation shaft being arranged in a circle center-point of one or more tool deposit plates, wherein the base frame includes a monolithically constructed, plate-shaped foundation in which the rotation shaft is mounted overhanging freely by way of a mounting arrangement.

Abstract: The invention refers to a machine tool where in a machine frame a tool spindle is provided. In the machine tool a tool change device for at least one machining tool is arranged. The tool spindle consists of a lug with at least two members wherein the lug holds the tool carrier receiving the machining tool. The two members are connected flexibly to each other by a bent joint.

Abstract: A motor-powered machine tool includes a drum-like tool-changing magazine having tool chambers. The magazine is arranged inside a housing, and when the tool is in a change position, one of the tool chambers of the tool-changing magazine is aligned with a tubular tool holder. The tool further includes a sliding element configured to slide a tool from the tool-changing magazine into the tool holder and from the tool holder back into the tool-changing magazine. The sliding element is movable in a longitudinal direction of the tool holder. In at least one embodiment, the sliding element is coupled with a gearbox system which includes at least one toothed gear. The rotational motion of the toothed gear is translated into linear movement of the sliding element.

Abstract: Machine tool for the production of profiles, such as gearing systems on a workpiece, by means of a rotoncally driven machining tool by generating grinding, profile grinding, generating milling and/or profile milling, having at least one workpiece receiving device, a workpiece machining device and an optional machining tool profiling device. According to the invention, the workpiece machining device is borne by a machine base that has a tangential carriage, a radial carriage, a lifting carriage and a rotational carriage. With this specific construction, the workpiece machining device is guided moveably in all spatial directions with respect to the workpiece receiving device and also, if available, with respect to the machining tool profiling device.

Abstract: In a method and a machine tool for machining metallic workpieces, a cooling device is provided to supply a cryogenic coolant to a first tool and a precooling device is provided to supply the cryogenic coolant to a second tool. The first tool is held in a first chuck and processes a workpiece, with the first tool during processing being cooled via the cryogenic coolant. The second tool is held in a second chuck and will subsequently be used for processing the workpiece. The second tool is supplied via the precooling device with the cryogenic coolant and thus cooled to the operating temperature required for processing. Due to the fact that the second tool is precooled to the required processing temperature, after the change of tools, the processing of the workpiece can be continued immediately. By precooling the second tool during the primary processing time, the total processing time of the workpiece is reduced, providing the machine tool with higher productivity.

Abstract: A vertical machining center in gantry construction may comprise a machine frame having two side walls configured to receive a tool-carrying assembly and a workpiece-carrying assembly, a moveable pickup tool magazine store within the two side walls of the machine frame configured for a tool change by the pickup method, and a machine enclosure which completely encloses the machining center. Below the moveable pickup tool magazine store there may be a free space in which there is additionally at least one further spare magazine, equivalent in construction to the pickup tool magazine store. A force-driven reloading handling system, with which machining tools can be reloaded from the spare magazine into the pickup tool magazine store and vice versa, may be provided within the machine enclosure at an access opening of the machine frame.

Abstract: A broaching device is provided with puller heads (132,134) that hold tip portions of broaches (116) and are supported in a horizontally freely movable manner, main motors (136, 140) capable of moving the puller heads (132, 134), retriever heads (133,135) that hold base end portions of the broaches (116) and are supported in a horizontally freely movable manner, sub motors (138,142) capable of moving the retriever heads (133,135), and a control device (117) that enables the puller heads (132,134) and the retriever heads (133, 135) to be synchronized with each other and to move at a fixed speed by controlling the motors (136,138,140,142), whereby machining accuracy can be improved.

Abstract: An auto tools change with space allowance for tool rejection of spindle includes an arm seat, an arm shaft, a tools change arm, a flat cam, and a driving arm, while the flat cam has a driving groove for driving the driving arm to swing and thus facilitates the tool clamping and tool unclamping. Therein, the driving arm has a tool clamping section having an allowance groove, a first transition section, a tool unclamping section, and a second transition section. Therefore, a larger width of the allowance groove is provided on the driving groove, thereby offering a sliding space for the tools change arm. Thus, a space allowance is produced during tool pushing process, thereby not only preventing the main shaft and the tool from being damaged, but also preventing the tools change arm from deformation.

Abstract: The method that exchanges pallets (118) between a table (116) and a pallet loading station (14) of a machine tool is configured so that the lower edge (122) of a pallet (A) installed on the table (116) is grasped by the leading edge portion (17) of a first arm (16a) of the exchanging arm (16) and the one side (122) of a pallet (B), which is disposed on the pallet loading station (14), that will become the lower edge when the pallet is installed on the table (116) is grasped by the leading edge portion (17) of a second arm (16b) of the exchanging arm (16), and the exchanging arm (16) is rotated 180° around an inclined axis (O) that extends 45° upward from a horizontal axis in a vertical plane that contains the axis of rotation (Os) of the main axis (108).

Abstract: A head tool changer for use with a deposition-based digital manufacturing system, the head tool changer comprising a tooling unit configured to retain a deposition head, a grip unit configured to engage with tooling unit and to relay electrical power to the tooling unit, and a master unit operably mounted to a gantry and configured to engage with the tooling unit and to relay electrical power to the tooling unit.

Abstract: Disclosed therein is an adapter-exchangeable type tool holder, which includes an adapter having fastening holes formed therein and a spindle having blocks and bolts detachably mounted to the fastening holes, wherein the blocks are respectively rotatable on hinge pins joined to the spindle, so that the spindle can be easily joined to and separated from the adapter.

Abstract: A spindle jig and a machining center having the same are disclosed. The machining center includes a spindle jig installed to be movable, a guide rail mounted to guide and move the spindle jig, a spindle that is fitted and supported on the spindle jig, and is equipped with a processing tool and rotates the processing tool, a column on which the spindle jig is mounted, an auto pallet changer equipped with materials, and transferring the materials to a processing area or a non-processing area, a splash guard rotated integrally with the auto pallet exchanger, mounted to be tiltable at a predetermined angle and separating the processing area from the non-processing area, and an upper cover installed to be rotatable on the movement path of the spindle jig along the guide rail. Accordingly, the replacement of the spindle can be quick and easy.

Abstract: Provided is a step-shaped drill bit including at least two stepped cutting edges that are axially provided. A cutting edge of a first step from a tip is formed so as to satisfy at least one of the following conditions. That is, a number of blades is smaller, a point angle of the cutting edge is larger, or a clearance angle of the cutting edge is larger than that of cutting edges of a second and subsequent step(s). As a result, a thrust resistance during a perforation can be reduced compared with a case in which the first step cutting edge is formed such that the number of blades, the point angle of the cutting edge and the clearance angle of the cutting edge are the same as those of the second and subsequent step(s).

Abstract: A vertical machining center in gantry construction may comprise a machine frame having two side walls configured to receive a tool-carrying assembly and a workpiece-carrying assembly, a moveable pickup tool magazine store within the two side walls of the machine frame configured for a tool change by the pickup method, and a machine enclosure which completely encloses the machining center. Below the moveable pickup tool magazine store there may be a free space in which there is additionally at least one further spare magazine, equivalent in construction to the pickup tool magazine store. A force-driven reloading handling system, with which machining tools can be reloaded from the spare magazine into the pickup tool magazine store and vice versa, may be provided within the machine enclosure at an access opening of the machine frame.

Abstract: A spindle assembly configured to be assembled at the internal taper socket of a tool holder, the assembly including: a rotating shaft configured for rotation within the tool holder; a bearing assembly, comprising a front end bearing assembly and rear end bearing assembly, configured to radially and axially support the rotating shaft within the tool holder and to enable high-speed rotation of the shaft within the tool holder; a turbine operatively connected with the rotating shaft, the turbine configured to rotate the rotating shaft; a plurality of passages configured to allow high pressure coolant fluid flowing from the tool holder to drive the turbine, wherein at least one bearing of the bearing assembly is disposed in a part of the spindle assembly which is configured to be situated in the space defined by the taper socket of the tool holder and a front clamping nut.

Abstract: The invention relates to a device for generating teeth of workpieces (3) by hob peeling, having a workpiece spindle (1) that can be rotatably driven for accommodating the work wheel (3) to be geared, particularly internally, and having a tool spindle (2) that can be rotatably driven, said tool spindle (2) carrying a peeling wheel (4), which has a regular tooth pitch determined by the tooth spacing of the gearing of the workpiece (3). In order to improve the performance of the generic device and/or generic method, and to provide the peeling wheel suited therefor, it is proposed that the distance between at least some of the teeth of the peeling wheel (4) that are of identical shape corresponds to a multiple of the regular tooth pitch.