Abstract: In order, in a multi-spindle lathe, comprising a lathe frame, a spindle drum, which is mounted on the lathe frame such that it can rotate about a spindle drum axis and has an end face facing a working space, a multiplicity of workpiece spindles, which are mounted in the spindle drum in such a manner that they can rotate about spindle axes and have workpiece-accommodating means, which are disposed so as to face the working space and into which workpieces which are to be machined in the working space can be inserted, also to ensure that the points in time and time durations for handling workpieces involve the minimum possible loss of machining time, it is proposed that there is a pivot-arm handling device, the foot of which is disposed on an opposite side of the working space from the end face of the spindle drum and which is formed in such a way that it can be used to insert workpieces into the workpiece-accommodating means of the workpiece spindles or to remove them therefrom, through the working space.

Abstract: In order to provide a drive housing for machine tool drives which offers the possibility, with simple production technology, of not being subject to any restrictions whatsoever with respect to the recess to be provided, it is suggested that this have a plurality of segments which are stacked in a stacking direction, are cut out from flat material and extend in stacking planes transversely to the stacking direction and each of which has continuous material web systems of a constant thickness which extend in such a manner that segments following one another in stacking direction abut on one another with their material web systems, thereby forming overlapping surfaces, and are connected to one another areally and with a material fit in the area of their overlapping surfaces.

Abstract: In order to improve a multispindle lathe comprising a machine frame, a rotatably mounted spindle drum, at least two workpiece spindles arranged in the spindle drum with their workpiece receiving means rotatable about a respective spindle axis, a plurality of spindle stations provided stationarily on the machine frame, into which the workpiece spindles are adapted to be brought, such that removal of workpieces in the workpiece removal station, which can take place very quickly, is possible with simple means, it is proposed that a rotatable workpiece receiving means be allocated to the workpiece removal station, the workpiece receiving means being movable by means of a carrier device relative to the workpiece spindle located in a workpiece removal station between a workpiece take-over position, in which the axis of the workpiece receiving means extends coaxially with the spindle axis of the workpiece spindle located in the workpiece removal station, and a workpiece delivery position, and the workpiece receiving

Abstract: In order to improve a multispindle lathe comprising a machine frame, a rotatably mounted spindle drum, at least two workpiece spindles arranged in the spindle drum with their workpiece receiving means rotatable about a respective spindle axis, a plurality of spindle stations provided stationarily on the machine frame, into which the workpiece spindles are adapted to be brought, such that removal of workpieces in the workpiece removal station, which can take place very quickly, is possible with simple means, it is proposed that a rotatable workpiece receiving means be allocated to the workpiece removal station, the workpiece receiving means being movable by means of a carrier device relative to the workpiece spindle located in a workpiece removal station between a workpiece take-over position, in which the axis of the workpiece receiving means extends coaxially with the spindle axis of the workpiece spindle located in the workpiece removal station, and a workpiece delivery position, and the workpiece receiving

Abstract: In order, in a multi-spindle lathe, comprising a lathe frame, a spindle drum, which is mounted on the lathe frame such that it can rotate about a spindle drum axis and has an end face facing a working space, a multiplicity of workpiece spindles, which are mounted in the spindle drum in such a manner that they can rotate about spindle axes and have workpiece-accommodating means, which are disposed so as to face the working space and into which workpieces which are to be machined in the working space can be inserted, also to ensure that the points in time and time durations for handling workpieces involve the minimum possible loss of machining time, it is proposed that there is a pivot-arm handling device, the foot of which is disposed on an opposite side of the working space from the end face of the spindle drum and which is formed in such a way that it can be used to insert workpieces into the workpiece-accommodating means of the workpiece spindles or to remove them therefrom, through the working space.

Abstract: In order to provide a drive housing for machine tool drives which offers the possibility, with simple production technology, of not being subject to any restrictions whatsoever with respect to the recess to be provided, it is suggested that this have a plurality of segments which are stacked in a stacking direction, are cut out from flat material and extend in stacking planes transversely to the stacking direction and each of which has continuous material web systems of a constant thickness which extend in such a manner that segments following one another in stacking direction abut on one another with their material web systems, thereby forming overlapping surfaces, and are connected to one another areally and with a material fit in the area of their overlapping surfaces.

Abstract: 054637723 The invention relates to a machine tool comprising a machine frame and at least one workpiece spindle. A workpiece can be clamped in the workpiece spindle and driven for rotation about a workpiece spindle axis into defined rotary positions by means of a numerically controlled C-axis. A support is provided on which the workpiece spindle is arranged and with which the workpiece spindle can be moved relative to the machine frame and transversely to the workpiece spindle axis into at least two spindle stations stationarily arranged with respect to the machine frame. At least one tool carrier associated with a selected one of the spindle stations is provided, which comprises a transverse-slide carrier mounted on the machine frame and having a transverse slide for a tool movable in an X direction relative to the workpiece spindle located in the selected spindle station.

Abstract: In order to improve a machine tool comprising a machine frame, a drum arranged for rotation about a drum axis within a maximum angular range in relation to the machine frame and having a plurality of machining devices held on it and drives rotatable with the drum and associated with the machining devices, a stationary control and supply device for the drives and a rotary supply unit which has line systems connected, on the one hand, to the rotatable drum as well as, on the other hand, held so as to be stationary in relation to the machine frame, these line systems being free from interruptions, deformable as a result of rotation of the drum and extending in the direction of the drum axis, in such a manner that the spatial requirements for the twistable line systems in the direction of the drum axis are as small as possible it is suggested that the line systems extend into a passage in the drum close to the drum axis.

Abstract: In order to improve a machine tool comprising a machine frame with an underframe and a machine column seated on this and having a support ring, a support mounted on the support ring for rotation about an essentially vertical axis, several workpiece receiving chucks for workpieces to be machined arranged on the support, an operating area extending around the vertical axis, and a plurality of stations arranged on the machine frame in the region of the operating area, the workpiece receiving chucks being positionable in these stations during a machining cycle, such that the machine frame has as great a rigidity as possible with as expedient a construction as possible it is suggested that the machine column have a reinforcement casing fixing the support ring in relation to the underframe, this casing extending outside the operating area and surrounding it at least partially, that the reinforcement casing comprise casing supporting structure elements which are located in a casing surface extending around the verti

Abstract: In order to improve a lathe, in particular, a multiple-spindle lathe, comprising at least one workpiece spindle arranged on a machine frame and rotatable about a spindle axis, this workpiece spindle projecting with its front end into an operating area, and a tool slide with a longitudinal slide element guided for displacement in Z-direction parallel to the spindle axis in a longitudinal guide means located outside the operating area and arranged on a slide stand of the machine frame and with a cross slide arranged in the operating area and displaceable in X-direction transversely to the spindle axis in relation to the longitudinal slide element, this cross slide being guided on a cross slide guide means arranged at a front end of the longitudinal slide element and movable by means of a cross feed gear, such that the tool slide as a whole is constructed in as space-saving a manner as possible and, in particular, requires little space in the operating area in order to create the possibility of using several too

Abstract: In order to improve a multiple-spindle turning machine, comprising a machine frame, a cylinder rotatable around an essentially horizontal rotational axis relative to the machine frame, work piece spindles arranged on the cylinder in respective individual positions with spindle axes, which are aligned essentially parallel to the rotational axis and which during the machining of a work piece are movable relative to the cylinder by means of linear drives in the direction of their spindle axis and independently of one another, and tools arranged on tool supports for machining the work pieces held in the work piece spindles, in such a way as to allow the respective work piece spindle to be positioned as precisely as possible in the direction of its spindle axis, it is proposed that each of the work piece spindles is allocated its own linear drive disposed on the cylinder to move it in the direction of the spindle axis, and that the work piece spindle is constantly coupled to the linear drive.

Abstract: In order to improve a machine tool comprising a machine frame, a drum arranged on the machine frame for rotation about a drum axis and having a plurality of machining devices for tools held on it and drives associated with the machining devices and rotatable with the drum, a stationary control and supply unit for the drives and a line system connected, on the one hand, to the drives rotatable with the drum and, on the other hand, to the control and supply unit, this line system being free from interruptions and rotary connections and deformable as a result of rotation of the spindle drum, such that the line system can be guided in as space-saving a manner as possible it is suggested that the line system have a long line system section extending along a system axis and rotatable about the system axis.

Abstract: In order to improve a multiple-spindle turning machine comprising a machine frame, two cylinders arranged on opposite sides of an operating area and mounted on the machine frame to be respectively rotatable around an essentially horizontal rotational axis, machining means arranged on the cylinders in respective individual positions with central axes aligned essentially parallel to the rotational axis, and tools for machining work pieces held in at least one portion of the machining means, in such a way that it may also be used as universally as possible for other work pieces, it is proposed that the cylinders are rotatable around their rotational axis independently of one another relative to the machine frame.