Abstract: A motor-driven working spindle for a machine tool has a casing in which a shaft is mounted for rotation. The shaft has a receptacle for a tool arranged at its front end. A spindle rotary drive is provided in the casing. Furthermore, a spindle advancing drive coupled with the shaft is provided in the casing.

Abstract: A tool magazine exhibits a storage wheel, on the circumference of which there are attached, in the direction of its rotational axis protruding in both directions, tool receivers designed to receive tools. To transport the tools to a tool changer arranged on one side of the storage wheel there is provided a tool handover device, which is movable by means of a 4-position drive. To also enable the tools arranged to face away from the tool changer to be transported, the storage wheel exhibits passage opening that is open towards its circumference.

Abstract: A machine tool for at least triaxial machining of work pieces comprises a column of the type of a casing with side walls. In an interior space, provision is made for a work spindle which projects into a working area and which is connected via couplers and hinges to a driving skid that is displaceably guided on each side wall straight in a y direction. The driving skids are displaceably guided on two guides which are spaced from each other in the z direction. Provided between the guides are linear motors, a first part of which is mounted on the driving skid and a second part on the side wall.

Abstract: A machine tool comprises a rack, a horizontally displaceable x skid and a y skid that is vertically displaceable thereon. The skids are drivable by linear motors which are arranged on the front side of the rack and the face side of the x skid, respectively, and on the rear side of the x skid and the rear side of the y skid, respectively. The same may apply to the x guides and the y guides. The air gaps of the linear motors of each skid are arranged in one plane.

Abstract: A workpiece holder comprises a stationary workpiece holding fixture and a workpiece rest which is releasably attachable thereon and on which can be mounted a workpiece. In all the three coordinate directions, the workpiece rest bears by counterpart surfaces on bearing surfaces formed on the workpiece holding fixture and is aligned and fixed by an oblique chucking appliance in two coordinate directions and by at least one holding-down appliance in the third coordinate direction.

Abstract: A machine tool for triaxial machining of work pieces with a machine rack. Couplers run on slewable bearings and being adjustable in an X-Y plane. These couplers are joined with a hinge. The machine tool is equipped with a tool carrier arranged at one coupler. The tool carrier is provided with a skid independently movable in X-Y-plane. The machine tool is equipped with independent drives for adjustment of the couplers. The machine tool which distinguishes itself by a simple and compact structure as well as by high stiffness of the coupler system in that at least two couplers (8,9) are run on bearings at two skids (4,5) which are adjustable in rack-proof guides by the aid of one drive each. The guides are mainly arranged in parallel to each other and with the couplers—if viewed in the projection on a X-Y plane—lying between the guides.

Abstract: A machine tool for the cutting process of work pieces and having at least one horizontally lodged work spindle, preferably for high speed and/or high precision processing. The work spindle displaces on and/or inside a frame-like tool carrier vertically placed on a machine support having slides moving along x-, y- and z-axes. According to the invention, the frame-like tool carrier (3) has an associated frame-like work piece holder (2), which is also placed vertically on the machine support (1). The work piece holder (2) and the tool carrier (3) are interconnected as one single stable unit by one or several connecting elements (8) in the area of their upper horizontal traverse (4, 6).

Abstract: The invention relates to a machining center, wherein at least one work spindle with a preferably horizontal spindle position can be displaced preferably in the direction of X, Y and Z and each work spindle is allocated at least one substantially circular tool store which can rotate around a central axis and which is provided with storage locations so that the working spindle(s) can deposit one or several tools. The invention is characterized in that a) the tool store (2) comprises one or several tool disk(s) (3) which are arranged parallel to each other and grouped together in a drum store, wherein b) the tool disk(s) can be individually or jointly rotated around a central axis (4) which is perpendicular to the spindle axis and c) the tools (5) can be inserted with their tips (6) forward into tool holders (7) in the tool store (2) which are arranged in a tangential to radical direction.

Abstract: A transfer line with devices for conveying work pieces along the central bases, lateral bases set up along the sides of the central bases on which the processing units are mounted so as to be capable of displacement, and supply devices for the processing stations. In order to improve access to the transfer line and simplify component units, the following features are proposed: a) the supply devices along the direction of travel of the work pieces are arranged exclusively within or in the region of and/or above the central bases; b) the supply devices are connected to each processing station via short detachable connecting pieces; c) shut-off devices are provided at least in the main lines for hydraulics, lubrication, pneumatics etc.; and d) at least one control block with valves is provided between the shut-off devices and the processing station.

Abstract: A process and machine tool for machining workpieces with two parallel work spindles fitted on a headstock. The distance between the work spindles is altered with the aid of a driven adjuster. The machine tool for machining workpieces, especially for numerically controlled machining centers, has two work spindles (1, 2) fitted parallel to each other on a headstock (3), where at least one work spindle (2) can be adjusted perpendicularly to its axis.

Abstract: The invention relates to a method of cooling and lubricating a metal-cutting rotating tool with a geometrically defined cutting element and/or the workpiece in the cutting zone. A coolant-lubricant and a carrier gas are fed separately into a tool shaft, brought together inside the rotating working spindle as close as possible to the cutting zone and directed via integral feed ducts onto the cutting element and/or cutting zone. Also disclosed is a device for applying this method. The coolant-lubricant and carrier gas are each introduced into a coolant reservoir completely or partially filled with a porous filler where they are mixed; the mixture is then fed directly into the cutting zone.

Abstract: A precise finish machining of bearing bores (25) at crankcases (26) is made feasible by way of a device with tow skid-guided spindle boxes (1, 2), the drivable spindles of which are in flush alignment. One spindle is designed as a working spindle (3) carrying a radially adjustable tool (11), while the other spindle is designed as a guide spindle (4) engaging with a guide pin (6) into a front-end bore (5) of the working spindle (3). The guide pin (6) is succeeded by a cone (7) on which the adjustable tool (11) is supported, and where a measuring key (14) is located between the cone (7) and the base (12) of the bore (5), the measuring signal from said measuring key serving for control of the distance between both spindle boxes (1, 2) and thus for control of the radial excursion of the tool (11).

Abstract: A method and device for changing a position of a cutting edge of a lathe tool, whereby the position is changed or altered in dependence upon a rotational frequency and a speed of rotation, respectively, that is, in dependence upon a centrifugal force.

Abstract: A method of correcting tool lengths and tool radii, particularly for numerically controlled machines equipped with position or path measuring systems by means of a nominal-actual value comparison up to a length and radii with the actual values which comprises, comparing the length and radius of the tool with an actual value by means of the position or path measuring system with which the machine is equipped and which are associated with the axes of motion, storing the difference of the values with the correct sign in a correction memory of the numerical control as a tool length or radius correction, and wherein, the nominal actual value comparison is effected in the zero position or at the zero passage of an analog of a digital transmitter which is disposed so that its zero or zero passage position in the Z-axis and the X-axis corresponds to constant spacing from the machine (a+b).