Abstract: The invention relates to a machine (1) for machining pipe ends. At least one centering device (8; 35) is associated to said machine, which centering device centers a tubular workpiece (5, 5?) in relation to an axis of rotation (D) of the machine for machining pipe ends extending in the center of the machine, the tubular workpiece either being stationary in the case of a rotating tool head (4) or rotating in the case in which the tubular workpiece is fastened in the machine chuck (9).

Abstract: The invention relates to a chuck (1) for a machine tool for machining a tubular workpiece (26) which rotates about a rotational axis that coincides with the center of the chuck, comprising at least two chucking slides (7a, b, c) that are designed to be positionable radially with respect to the rotational axis in order to release and chuck the workpiece, are arranged on the end side of and in a manner distributed uniformly around the circumference of a chuck head plate, and bear chucking jaws (8a, b, c). Such a chuck is intended to be created with improved operating characteristics and extension to all chucking functions.

Abstract: The invention relates to a machine (1) for machining pipe ends. At least one centering device (8; 35) is associated to said machine, which centering device centers a tubular workpiece (5, 5?) in relation to an axis of rotation (D) of the machine for machining pipe ends extending in the center of the machine, the tubular workpiece either being stationary in the case of a rotating tool head (4) or rotating in the case in which the tubular workpiece is fastened in the machine chuck (9).

Abstract: The invention relates to a chuck (1) for a machine tool for machining a tubular workpiece (26) which rotates about a rotational axis that coincides with the centre of the chuck, comprising at least two chucking slides (7a, b, c) that are designed to be positionable radially with respect to the rotational axis in order to release and chuck the workpiece, are arranged on the end side of and in a manner distributed uniformly around the circumference of a chuck head plate, and bear chucking jaws (8a, b, c). Such a chuck is intended to be created with improved operating characteristics and extension to all chucking functions.

Abstract: The invention relates to a chuck (1) for a machine tool for machining a tubular workpiece which rotates about a rotational axis (4) that coincides with the centre of the chuck, comprising at least two chucking slides (7a, b, c) that are designed to be positionable radially with respect to the rotational axis (4) in order to release and chuck the workpiece, are arranged on the end side of and in a manner distributed uniformly around the circumference of a chuck head plate (2), and bear chucking jaws (8a, b, c).

Abstract: The invention relates to a transport device (1) for workpieces (2) which have a longitudinal axis (L), in particular for pipes or for round stock, by way of which transport device (1) the workpieces (2) can be conveyed from a first location (3) to a second location (4) in a conveying direction (F) transversely with respect to their longitudinal axis (L), wherein the transport device (1) has: at least two stationary storage carriers (5, 6) which are arranged spaced apart in the conveying direction (F) for the intermediate storage of the workpieces (2) to be conveyed, at least one first conveying rack (7) with a number of storage surfaces (8) which are spaced apart in a conveying direction (F) for the workpieces (2), at least two drive shafts (9, 10) which are arranged parallel to one another and are driven synchronously, and at least two first rocker arms (11, 12), wherein each first rocker arm (11, 12) is connected fixedly to a drive shaft (9, 10) so as to rotate with it and in an articulated manner to the fi

Abstract: The invention relates to a transport device (1) for workpieces (2) which have a longitudinal axis (L), in particular for pipes or for round stock, by way of which transport device (1) the workpieces (2) can be conveyed from a first location (3) to a second location (4) in a conveying direction (F) transversely with respect to their longitudinal axis (L), wherein the transport device (1) has: at least two stationary storage carriers (5, 6) which are arranged spaced apart in the conveying direction (F) for the intermediate storage of the workpieces (2) to be conveyed, at least one first conveying rack (7) with a number of storage surfaces (8) which are spaced apart in a conveying direction (F) for the workpieces (2), at least two drive shafts (9, 10) which are arranged parallel to one another and are driven synchronously, and at least two first rocker arms (11, 12), wherein each first rocker arm (11, 12) is connected fixedly to a drive shaft (9, 10) so as to rotate with it and in an articulated manner to the fi

Abstract: A thread cutter for pipe ends has a tool head rotating coaxially with respect to a fixedly clamped pipe end and provided at tool holders in the form of radial sliders. Actuators which are parallel to the rotation axis are mounted on a frame shiftable with respect to the head for synchronously radially displacing the sliders and gears mesh with racks of neighboring sliders. The gears are formed with an integrated centrifugal force balancing system.

Abstract: A thread cutter for pipe ends has a tool head rotating coaxially with respect to a fixedly clamped pipe end and provided at tool holders in the form of radial sliders. Actuators which are parallel to the rotation axis are mounted on a frame shiftable with respect to the head for synchronously radially displacing the sliders and gears mesh with racks of neighboring sliders. The gears are formed with an integrated centrifugal force balancing system.

Abstract: A machine for cutting a tube having a frame encompassing the tube on which supports are conducted and moveable in two vertically stacked axial directions on a plane running at a right angle to the tube longitudinal axis. At least two supports are driven exclusively in a single axial direction during the cutting process. A cutting head is mounted on each support, each cutting head having a disk milling cutter attached thereto. The disk milling cutters, which are rotary driven on a common cutting plane, simultaneously cut through the tube as the result of controlled movement of the supports in their axial directions. The disk milling cutters, moving in the same direction relative to the circumference of the tube, i.e. clockwise or counter-clockwise, simultaneously cut a section of the wall cross-sectional area of the tube. The machine also has clamping devices arranged in the vicinity of the disk milling cutters to secure the tube in place during the cutting process.

Abstract: An apparatus for machining an end of a tube clamped within the apparatus and including a tool head rotatable about the axis of the tube, a plurality of tool holders including tools arranged about the tool head and radially moveable with respect to the axis, a plurality of push rods uniformly positioned about the tool head and axially parallel to the axis including oblique toothing positioned about one end thereof and a frame connected to the push rods and being displaceable along the axis to provide axial movement to the push rods. A transmission device including toothing for engaging the toothing on the push rods is positioned between the tool holders and push rods for imparting radial movement to the tool holders and tools connected thereto based upon axial movement of the push rods.

Abstract: Machine tool with a driving spindle held in a carrier, an exchangeable machining head that can be coupled with the carrier and a tool spindle in the machining head that can be coupled with the driving spindle and adjustment and locking means on the carrier for locking the machining head onto the carrier. The machining head can be withdrawn from a magazine for machining heads by means of said adjustment and locking means and it can be coupled with and locked onto the machine tool and, after releasing, it can be brought into any desired angular position relative to the machine tool and locked again.

Abstract: A flexible manufacturing apparatus having several parallel, spaced-apart processing machines several shelf-like magazines disposed at the rear of the processing machines and extending transverse thereto, and transport mechanisms for conveying tools from the magazines to the processing machines. Two magazine rows are provided, each composed of magazine sections having superimposed, horizontal bottoms, including a lower shelf bottom and an upper shelf bottom, for holding tools. Transport mechanisms are provided in the form of a first upper transport mechanism, which, above the height of a person, is disposed on an upper transport rail, and a second lower transport mechanism, which, below the upper transport mechanism and at approximately half of the height thereof, is disposed on a lower transport rail. At least one mechanism is provided for conveying tools in a vertical plane from the lower shelf bottoms to the upper shelf bottoms, and vice versa.

Abstract: A flexible manufacturing system for machining workpieces. The system encompasses several tool machines, a storage unit that includes several tool shelves that are disposed along a guideway and have recesses for holding the tools. The guideway is disposed directly adjacent the row of tool machines, and the shelves have horizontal bottoms for supporting tools in a perpendicular manner. A transporting unit transports tools from the storage unit to a transfer station, with the transporting unit having a horizontally disposed pivot arm assembly for transporting tools in a perpendicular position. A changing device is adapted to grasp a new tool from the transporting unit and a used tool from a tool machine in two planes that are perpendicular to one another, and to pivot these tools by 180.degree. to bring them into planes that are perpendicular to the planes that they were in when they were grasped.

Abstract: A horizontal drilling and milling machine comprises a vertically movable headstock and a spindle sleeve mounted for horizontal run-out from the headstock. Typically, an outer end of the spindle sleeve undergoes a vertical deflection relative to the headstock during run-out, which deflection is an exponential function of the extent of the run-out. A correcting means is connected to the headstock to move the latter as the run-out proceeds, to effect a vertical correction displacement of the forward end of the spindle sleeve, which displacement is the same exponential function of the extent of the run-out as that of the vertical deflection relative to the headstock. Correction is achieved by comparing a signal indicative of the extent of the run-out, with a predetermined exponential function for the particular spindle sleeve and tool, and generating a suitable correction signal in response thereto. A memory and computer device is employed to make the necessary comparison.

Abstract: A tool changing device on machine tools, particularly on horizontal boring and milling machines having a drilling spindle. The device includes a dual-arm changing arm rotatable about its horizontal axis and provided on both ends with a grasping device. The changing arm is arranged rotatable on a pivotable pivot arm about an axis of the pivot arm parallel to the changing arm axis. The pivot arm is adjustable in the axial direction. The changing arm carries out rotational movements on the pivot arm during pivoting of the pivot arm (superimposed movements). The grasping device at one changing arm end describes a flat compound curve, or follows the connecting line between the starting and end positions.