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: An NC lathe includes a bed, a headstock mounted on the bed for rotating a work around C-axis, a tailstock slidably mounted on a first guide surface formed on the bed, and a carriage slidably mounted on a second guide surface formed on the bed in a direction of Z-axis parallel to the C-axis and juxtaposed with the first guide surface. The carriage has a saddle having a first slide surface for contacting the second guide surface of the bed and a second slide surface inclined at a predetermined angle with respect to the first slide surface. A slide base is slidably mounted on the second slide surface of the saddle for movement in a direction of Y-axis perpendicular to the Z-axis. A column extends from the slide base substantially perpendicular thereto and includes a column body which has a guide surface in a direction of X-axis perpendicular to the Z-axis and to the Y-axis. A cross slide is slidably mounted on the guide surface of the column body in the direction of the X-axis and includes a driving device.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: The present invention relates to a numerically-controlled lathe, a numerically-controlled device therefore and a procedure for processing a workpiece thereby. An object of the invention is to provide a numerically-controlled lathe adapted to designate one of two spindles and three tool rests and a procedure for processing a workpiece thereby.

Abstract: A machine for finishing opposite ends of tubular metal stock secures the workpiece in position for machining by means of an expansible collet assembly inserted into the open end of the workpiece and expanded to grip the workpiece while the it is held against a stock stop. Expansion of the collet assembly, machining of the tube end, withdrawal of the machining tools and release of the workpiece from the collet assembly takes place in a controlled sequence.

Abstract: A machine tool turret having a plurality of tool holders with tension rod-actuated mechanisms for locking the tool head can be rotated to bring a selected tool holder into engagement with jaws of a release unit, applying to the tension rod a force sufficient to compress the disk spring stack thereof and release the tool and to the holder a counterforce which is equal and opposite in direction and prevents the release unit from stressing the bearings of the turret or any spindle bearings which may make the tool holder rotatable.

Abstract: A turret lathe table having tool holders arranged on at least three concentric reference circles around the center of the table. The tool holders consist of first tool holders for drill tools and inner turning tools and second tool holders for outer turning tools. The first tool holders are arranged exclusively on the innermost and at least one intermediate reference circle, while the second tool holders are arranged only on the outermost reference circle. The spacing between the tool holders is such that a collision-free diameter remains between adjacent tool holders, the collision-free diameter being defined as a diameter equivalent to a workpiece of maximum dimensions capable of being machined by a respective tool in a respective tool holder without interference from tools in adjacent tool holders.

Abstract: A machine tool has chuck means defining a geometric axis for holding a workpiece and turret means rotatable about an axis of rotation. The turret means includes at least one end surface, a peripheral surface and first fastening means distributed along a circle within a plane extending normally to the axis of the rotation and being adapted to fasten a tool by means of its fastening surface. At least one tool chucking attachment has a fastening surface to be fastened by the first fastening means instead of a tool head. The tool chucking attachment includes at least one second fastening means having fast-locking means for receiving the fastening surface of a tool head.

Abstract: The machine tool of the invention combines the following three features: the workpiece holder (22) rotates around an axis (C) which is referred to as horizontal turning axis and is parallel to one (X) of the three orthogonal axes (X, Y, Z), the said axis (C) overlying a table (12) the flat upper-face of which is parallel to said turning axis (C) and comprises means for fastening one or more support and/or centering means (15, 24); the toolholder (38) comprises two clamping mandrels, one for a stationary tool and the other for a rotary tool; the workpiece holder is in relation with drive means (23, 25) which confer upon it one of the three kinematics of the following kinematic group: immobilization in a given angular position, a so-called slow speed of rotation for milling operations which are not parallel to the axis (C), and a so-called high speed for the turning.

Abstract: A machine tool (100) has a spindle (101) and a turret or toolholder (124) which are disposed at the front of a base (134).A workpiece (W) is rotated by the spindle (101). The turret (124) is movable toward and away from the workpiece (W) along a path which has vertical and horizontal components. A conveyor assembly (200) is operable to move workpieces between the rear of the base (134) and the spindle (101) along a path (A) which extends through a plane (E) which contains the axis (C) of rotation of the spindle. The plane (E) is parallel to vertical and horizontal components of movement of the turret (123). An alternative embodiment (100a) of the machine tool includes a pair of spindles (101a, 301) and a pair of turrets (124a, 324) disposed at the front of a base (134a, 334). Workpieces (W9, W10) are moved two at a time between the rear of the base (134a, 334 ) and the two spindles (101a, 301) along a path which extends through a plane which contains the axes (C, J) of rotation of the spindles (101a, 301).

Abstract: This invention relates to a machine tool having a table for mounting a workpiece. The body of a machine tool is equipped with a table for mounting a workpiece. The table is further equipped with a rotary table. When performing turning operations of the workpiece, the workpiece is mounted on the rotary table. On the other hand, when performing other operations, except for the turning operation, the workpiece is mounted on the non-rotary table. In addition, if desired, the workpiece can be mounted on both the table and the rotary table for performing other operations.

Abstract: Lathe comprising a main work spindle drivable by numerical control and a turret with several indexing stations, the turret having at least one drivable tool spindle, being mounted on a turret slide for rotation about a turret axis and being rotatable by numerical control about this axis by means of a turret driving device, and also comprising a switchable device for securing the turret against rotation. For positive locking of the turret and for play-free mounting of the unlocked turret, spur gears displaceable relative to one another in the direction of the turret axis are connected to the turret and to the turret slide in a rotationally fixed manner, and a bearing is provided for the turret which in the unlocked state of the latter is free from play.

Abstract: A machine tool comprises two workpiece spindles having a spindle axis and located axially opposite to one another, at least one of the workpiece spindles being movable in an axial direction for transferring a workpiece from a clamping location to a working location, at least two tool carriages which are movable independently of one another parallel to the spindle axis and perpendicular to the spindle axis, guides arranged at opposite sides of the spindle so that tools of both the tool carriages can work both a workpiece held in one of the tool spindles and a workpiece held in the other of the tool spindles, two revolvers each arranged on a respective one of the tool carriages and provided with a plurality of tool receptacles, one of the two revolvers having a switching axis which extends perpendicular to the spindle axis, while the other of the two revolvers has a switching axis which extends parallel to the spindle axis, and the tool receptacles of the revolvers are formed so that the tools in both two revol

Abstract: A machine tool consisting of a stand for a spindle case which travels along the horizontal Z-axis and the vertical Y-axis, with at least one horizontal working spindle and a non-deformable bed with guides for workpiece bench traveling horizontally along the X-axis. To allow simultaneous milling and lathe work on several workpieces, the machine tool comprises a complete milling unit, and next to it on the machine bed, a complete lathe unit. To the side of the workpiece bench of the milling unit, an independent, rotation driven device is placed within the guides of the bed for clamping horizontally aligned workpieces, and next to it a turret head upon which turning tools are secured.