Abstract: An apparatus for grinding a surface of a nonstraight elongated workpiece has a frame, drives on the frame for rotating the workpiece about a longitudinal workpiece axis, and a guide defining a pivot axis offset from the workpiece axis on the frame. A hanging arm has an inner end juxtaposable with the workpiece and an outer end pivoted at the pivot axis on the guide. A rotary grinding tool is provided on the arm inner end.

Abstract: A machine tool in which the workpiece is transported by a pair of longitudinal carriages with transverse and vertical carriages supporting the workpiece holders to a machining region from a workpiece replacement region. In the machining region the workpiece is displaced relative to the tool and possibly rotated. In the workpiece replacement region, the workpiece is replaced in the machine tool by a workpiece which has not been machined.

Abstract: Method and apparatus providing a tool turret for a machine tool with at least one motor-driven tool that is suitable for machining of wavy or tubular workpieces. The transport of the workpieces from one machining station to the next is effected in a simpler, more reliable, and less expensive fashion, because the machine tool has a tool turret that includes a gripping element for taking hold of, transporting, and positioning workpieces, rather than using an additional tool.

Abstract: At least one machine tool, preferably two machine tools (1, 2) is or are provided for the production of workpieces, or for the complete production of complex workparts, which machine tools each have a basic body (3, 4) and machine units (7, 8) movable in the horizontal direction thereon. Each machine unit has a work spindle (13, 14) which is supported displaceably in the axial direction of the spindle in a carrier (11, 12) of crankshaft-like design. The carrier is mounted pivotably and supports each work spindle above a respective transport system (31, 32) for a workpiece or the workparts (37, 38). Machining devices, for example in the form of a tool carrier (44) for turning, drilling and/or milling tools, a laser-welding device (46), a grinding device (47) and a brushing device (48), and also an apparatus for joining, are provided in the functional area of one of these machine tools.

Abstract: A grab picks up a hollow workpiece and displaces it to a machining station where, while the workpiece is held in the grab, a tool is engaged from outside with a first surface of the workpiece to finish the first surface. Then the workpiece is reoriented by the grab and engaged by a tool with a second surface of the workpiece to finish the second surface. Another tool is fitted through a large-diameter hole of the workpiece and positioned inside the workpiece adjacent a small-diameter hole and a drive spindle is coupled through the small-diameter hole to the other tool to machine an inner surface of the workpiece adjacent the small-diameter hole. These steps are then repeated to finish another interior surface of the workpiece adjacent another small-diameter hole. Finally the workpiece is displaced from the machining station and released from the grab.

Abstract: A machine tool in which the workpiece is transported by a pair of longitudinal carriages with transverse and vertical carriages supporting the workpiece holders to a machining region from a workpiece replacement region. In the machining region the workpiece is displaced relative to the tool and possibly rotated. In the workpiece replacement region, the workpiece is replaced in the machine tool by a workpiece which has not been machined.

Abstract: A machining center, especially a self-loading machining center has a plurality of machining devices and an automatic tool-replacement system. The transport device delivers a workpiece to and receives a workpiece from a workpiece holder on a machine base between longitudinal rails on which the workpiece holder is guided. The workpiece holder carries the workpieces into the operating ranges of a pair of machining devices which can be shifted from the machining position into the tool-change position alternately. The machining feed is provided by the workpiece holder.

Abstract: A machining apparatus has a lower housing part, an upper housing part having a lower side, and a plurality of support posts fixed to the upper and lower parts and holding the upper part fixedly at a spacing above the lower part. A tool holder displaceable parallel to a horizontal tool axis on the lower side of the upper housing part carries a chuck rotatable about the tool axis and can hold a machining tool. A supply station on the lower part offset horizontally perpendicular to the tool axis from the tool holder is can hold a plurality of the workpieces. A cross slide connected between the upper housing part and a workpiece chuck displaces the workpiece chuck in a horizontal direction perpendicular to the tool axis and in a vertical direction to displace a workpiece between the station and a position aligned on the tool axis with the tool chuck.

Abstract: A machine tool in which a plurality of machining positions is orbited by a work spindle unit carrying a workpiece and capable of radial displacement relative to the central axis of rotation. The work spindle unit may be one of one or more such units mounted upon a bridge element angularly displaceable about that axis.

Abstract: A machining apparatus has a housing defining a supply station and a machining station, a holder slide, and an actuator for displacing the holder slide on the workpiece in a main direction between the stations. A tool at the machining station can machine a workpiece. A pair of bearings spaced apart on the holder slide and defining an axis hold a shaft of a holder mounted on the holder slide between the bearings and having a shaft seated in both of the bearings for pivoting about the axis. The holder is adapted to carry a workpiece.

Abstract: A machining system has a frame defining at least one work station, a guide extending in a first direction on the frame, first and second slides movable independently of each other on the guide, and a support having a pair of sides. Respective first and second main links each have one end pivoted on the support at a respective one of the sides and an opposite end pivoted on a respective one of the slides. A machining unit is carried on the support. Actuators connected to the slides can independently move them and thereby pivot the support and unit about an axis perpendicular to the guide and move the support and unit parallel and transverse to the guide.

Abstract: A machine tool in which a plurality of machining positions is orbited by a work spindle unit carrying a workpiece and capable of radial displacement relative to the central axis of rotation. The work spindle unit may be one of one or more such units mounted upon a bridge element angularly displaceable about that axis.

Abstract: A machining apparatus has a lower housing part, an upper housing part having a lower side, and a plurality of support posts fixed to the upper and lower parts and holding the upper part fixedly at a spacing above the lower part. A tool holder displaceable parallel to a horizontal tool axis on the lower side of the upper housing part carries a chuck rotatable about the tool axis and can hold a machining tool. A supply station on the lower part offset horizontally perpendicular to the tool axis from the tool holder is can hold a plurality of the workpieces. A cross slide connected between the upper housing part and a workpiece chuck displaces the workpiece chuck in a horizontal direction perpendicular to the tool axis and in a vertical direction to displace a workpiece between the station and a position aligned on the tool axis with the tool chuck.

Abstract: The tool-changing device comprises a tool carrier rotatably mounted in a basic housing by means of a hollow shaft. This tool carrier is driven via a ring motor, the rotor of which is directly connected to the hollow shaft. A servomotor for the drive of tools is provided in the interior of the hollow shaft. Furthermore, the cavity of the hollow shaft also accommodates supply lines for the tools.

Abstract: A lathe comprises at least one base unit which is constructed from two machine beds 4, 7. The machine beds are cast as a one-piece unit from reaction resin concrete and carry the bed guides 5, 8 for a spindle box 6 which is displaceable in the direction of the spindle axis 10 and a tool carrier slide 9 with a tool turret 3. The bed guides are at a right angle relative to one another. Each spindle box comprises a projection 15 which has the length of the displacement path of the spindle box 6 and penetrates through a dividing wall 16 at the front end of the displacement path which is arranged at a right angle to the spindle axis 10. The switching axis 11 of the tool turret 3 is arranged at an angle relative to the longitudinal direction of its bed guide 8.

Abstract: The tool turret comprising driven tools comprises a turret shaft (2) which carries the turret plate (4) and is supported in a turret housing (1) so as to be rotatable and axially displaceable. The turret shaft (2) can be locked at the turret plate end by a Hirth coupling. At the other end, the turret shaft (2) can be connected via a switchable coupling with a toothed wheel (23) of a gear unit (15) so as to be fixed with respect to rotation relative to it, the toothed wheel (23) being supported coaxially relative to the turret shaft (2). A switchable intermediate wheel (26), which engages with a pinion (27) of a drive shaft (28) for the tools to be driven, can engage with the coaxial toothed wheel (23). The turret shaft (2) can be displaced axially into its two end positions by a double-action piston (6), the couplings (12, 13) connected with the turret shaft (2) being alternately engaged and disengaged in the two end positions.

Abstract: The turret for machine tools has a turret disk which is rotatable via a gear unit and can be positioned in determined rotational angle positions, wherein the gear unit also serves to drive a tool drive shaft. A plurality of tool holding devices are provided on the turret disk so as to be distributed on the circumference including a base part and a tool holder which is displaceable relative to the base part vertically relative to the turret axis and adjustable. A feed gear unit is provided in the base part for the tool holder, wherein the feed gear unit can be coupled with the tool drive shaft. The tool holder and accordingly the tool carried by it can accordingly be adjusted in the radial direction.

Abstract: An arrangement for centering and clamping of work pieces comprises tension levers swingably supported on a base plate, the tension levers of which are arranged coaxially on a pivot, while the other tension lever is supported on a second pivot which has the same distance to the center of the arrangement as the hinge pin. The contact surfaces with which the tension levers grasp a work piece, are designed so that the perpendicular line extends on the particular tangent at the contact point between contact surface and work piece through the center of the arrangement. This forces the work piece, independently of its diameter, continuously into the center in the clamping process and, consequently, centers it. Due to the arrangement of the tension levers, inserting work pieces transversely to the chuck axis is possible in spite of the center clamping process.

Abstract: The center drive machine comprises on each machine bed half a center drive headstock for seating and driving the workpiece and in each instance a tool holder slide for the uptake of tools. Both machine units are movable on the same machine bed. For setting the machine according to the workpiece length and for executing the work cycle, both machine units are movable on the machine bed by means of a single drive unit, the drive unit being disposed at one of these machine units and engaging at the other machine unit. For moving the machine units along the machine bed, one machine unit is clamped to the machine bed, allowing the drive to brace itself against this clamped machine unit and the other machine unit to move. The drive unit comprises a servomotor and a spherical roller spindle.

Abstract: A parts handling device is provided having a movable carrier on which is disposed a plurality of coil wound magnet poles. At least one of the poles is wound and with an A.C. source so that its current or voltage is subject to changes in response to induced magnetic flux caused by its proximity to a ferro-magnetic material. The changes in current or voltage so induced is sensed by a low impedance device or a resonant circuit device and an electric signal is produced which is employed to convert said poles to D.C. excitement control the operation of the parts handling device.