Abstract: An angle guide assembly for being coupled to a table body that slides along a longitudinal axis relative to a base of a saw. The angle guide assembly includes an attachment member configured to attach the angle guide assembly to the table body; a guide body and an angled fence pivotally coupled to the guide body between a first orientation in which a workpiece can be placed at an angle to the longitudinal axis along a first guide surface of the guide body by placing the workpiece against the fence surface, and a second orientation in which a workpiece can be placed at an angle to the longitudinal axis along a second guide surface of the guide body by placing the workpiece against the fence surface.

Abstract: A machine tool is provided with two vertically oriented tool spindles that are arranged to hold tools and that are movable vertically in a first direction and horizontally in a second direction orthogonal to the first direction. Furthermore, the machine tool is provided with two workpiece support devices for clamping workpieces in place. At least one of the two workpiece support devices is movable horizontally in a third direction orthogonal to the first and the second direction. The two tool spindles and the two workpiece support devices are mounted on a common machine frame with a common working space, wherein the two tool spindles are movable parallel to one another in the second direction. The two tool spindles are facing one another.

Abstract: A pallet changing device (40) for changing pallets on a machine tool comprises a changing device (15) including connecting elements (26, 28) for releasably connecting the pallet changing device (40) to pallets (7, 8), a rotational drive (19) for rotating the changing device (15) in a working plane (18), and a lifting device (20) for raising and lowering the changing device (15) and thus the working plane (18) within a workspace (21). The rotational drive (19) is arranged outside the workspace (21).

Abstract: A table unit for a machine tool includes a tilting table provided on a base and configured to be swingably indexable around a horizontal axis, a rotary table provided on the tilting table and configured to be rotatably indexable around a vertical axis orthogonal to the horizontal axis, and at least one motor disposed in the tilting table and configured to be driven to rotate the rotary table. An axis of a motor shaft of the motor is arranged in a plane formed by the horizontal axis and the vertical axis.

Abstract: The present invention relates to a machine tool and a corresponding method for machining, in particular for turning and milling, a workpiece having a central bore, said machine tool including a tool holder for holding a tool, a work rest for seating the workpiece, a work mounting for holding the workpiece in place, and a drive mechanism for rotating the workpiece about a central rotation axis, wherein the work rest has an arbor for attaching the workpiece, such that a section of the arbor projects into the central bore on a first side of the workpiece, and wherein the work mounting has a counter-holder movable in the direction of the bore axis of the central bore for applying a contact pressure, acting in the direction of the bore axis, to the workpiece on a second side opposite the first side.

Abstract: The present invention relates to a machine tool and a corresponding method for machining, in particular for turning and milling, a workpiece having a central bore, said machine tool including a tool holder for holding a tool, a work rest for seating the workpiece, a work mounting for holding the workpiece in place, and a drive mechanism for rotating the workpiece about a central rotation axis, wherein the work rest has an arbor for attaching the workpiece, such that a section of the arbor projects into the central bore on a first side of the workpiece, and wherein the work mounting has a counter-holder movable in the direction of the bore axis of the central bore for applying a contact pressure, acting in the direction of the bore axis, to the workpiece on a second side opposite the first side.

Abstract: In the course of a machining of a workpiece with a tool, a drive spindle with a tilt table secured thereto of a tilt device provided on a work table of a machining center is rotated by a direct drive motor to control the relative angular position between the tool and the workpiece, and within a predetermined period of time in the course of a machining, the direct drive motor is rotated at a high speed with a spindle head and the work table of the machining center kept away to rotate the drive spindle and hence, the tilt table at a high speed, so that chips and cutting lubricant can be shaken from the workpiece and the tilt table.

Abstract: A machine tool has a tool spindle which can be moved in an x-direction and a y-direction and a workpiece slide which can be moved in the z-direction and has a swiveling table which can be pivoted about an A-axis which is parallel to the x-axis. A feed and removal device is provided, which has an H-shaped pallet changing mechanism, which can be pivoted about a y1-axis which is parallel to the y-direction, a y1-pivot drive and a lift drive for displacing the pallet changing mechanism from a lower feed and removal position into a central pallet depositing position and into an upper pallet lifting out position.

Abstract: Disclosed is a machining device, particularly for producing tooth replacement parts or models thereof, comprising a workpiece holder and at least one machining tool which is disposed in a machining space for a workpiece that is mounted therein. The feeding axis for the workpiece into the machining space extends at an angle relative to the horizontal.

Abstract: A machine tool having an automatic tool changer (ATC). The machine tool includes a gantry, a spindle extending from the gantry, a configurable work area, and an ATC adjacent to a front wall of the machine tool. The ATC includes a rotary tool magazine and a plurality of receptacles oriented radially around the rotary tool magazine configured to hold a plurality of cutting tools having cutting edges. The cutting edges of the cutting tools point radially inwardly around the rotary tool magazine, and the cutting tools are removed directly from the automatic tool changer by the spindle and brought to a part to be machined. A tool sensor may be located between the ATC and the spindle to take measurements of the cutting tool. The ATC includes at least one receptacle configured to hold a cutting tool.

Abstract: A machine tool for achieving a high degree of flexibility during workpiece processing comprises a machine bed with side walls arranged thereon, which respectively comprise a basic body with a front overhanging projection arranged thereon. On the side walls a tool spindle is arranged to be linearly movable by means of slides. Underneath the front overhanging projections a processing space is formed for the workpiece processing, in which a workpiece positioning unit is arranged. The processing space underneath the front overhanging projections is freely accessible, whereby depending on the processing task different workpiece positioning units can be arranged therein.

Abstract: A machine tool has, on a machine bed, two stands which can be moved in the horizontal x- and z-direction, on which y-slides carrying tool spindles can be vertically moved. Arranged on one of the stands directly above a bridge projecting over its upper side is at least one tool magazine, with which a tool changer is associated for each stand. The drives for the y-slides are attached below the upper side of the stands to the stands.

Abstract: A machine tool, wherein the front face of a base of the machine tool is formed in a single plane and a jig for fixing a workpiece to be machined with a tool is installed extending forwardly from a vertical intermediate front part of the base that defines an area between right and left lateral end front parts of the base having the vertical overall length portions or the vertical roughly overall length portions at right and left end parts of the front face formed in the single plane is formed detachably from the other portions of the base. The jig for fixing the work machined with the tool may be installed in the state of being extended from the vertical intermediate position of the front face in a forward direction.

Abstract: A machine tool having a carrier device for workpieces or tools or tool spindles. A console supports the carrier and can be pivoted about a first axis (X) from the horizontal into the vertical position and beyond. The console is pivotably housed on carriages guided in the machine body. The carrier for a workpiece, a tool, or a tool spindle is arranged on the console, and a drive device is provided for the synchronous displacement of the carriages on guide rails fixed on the machine tool. The console is hinged via two crank-like arms to the stationary machine body in addition to being supported on both carriages to form a kniematic coupling.

Abstract: A working apparatus, provided with a base stage, work hold and rotation device for holding and rotating a work, working device movable toward and away from the work via slider mechanism and having a working tool, press structure for pressing the working tool toward the work via the working device, and trace device pressed toward the work together with the working tool by the press structure and in contact with the work and moving the working device as a whole in forward and rearward directions according to outer shape of the work. By pressing of the pressing structure, the working tool deburrs and chamfers under control of working volume by the trace device. The work hold and rotation device has work rotation axis angle adjustment mechanism, for adjusting angle of rotation axis of the work by holding the work. The working apparatus can precisely deburr and chamfer complicated shape of work such as worm gear.

Abstract: A machine tool comprising a machine frame having dimensionally rigid side walls, each including top-side horizontal guide rails. A compound slide is displaceable in or on the guide rails. On the front of the compound slide is a machining unit comprising a spindle head which is vertically displaceable. A workpiece mounting unit is disposed in the space between the side walls. The workpiece mounting unit may have a workpiece table or a workpiece chucking device. In order to form an enlarged access to the work area of the machine tool, one side wall is shorter at the front than the other side wall. Further, the linear guides or guide rails mounted to the side walls of the machine frame may be aligned at an acute angle ? to the vertical center plane of the machine frame.

Abstract: A complete machining center has a horizontal machine bed (1) with a vertical-axis trunnion (2) pivotal horizontally with computer-coordination proximate a first-end portion (3) and a traveling tool column (4) with computer-coordinated horizontal X and Y axes and vertical Z tool travel on a compound slide (6) proximate a second-end portion (5) for horizontal access of a cutting tool (12) on the traveling tool column to work pieces on a work-piece rotator (10) and for horizontal access of the cutting tool to work pieces on a vertical-axis milling table (38), either of which are positioned on the horizontally pivotal vertical-axis trunnion (2). A work-piece changer (31) is provided for optionally manual or computer-coordinated work-piece setup, setup reversing and finished-work-piece removal.

Abstract: The invention provides a composite working lathe capable of improving the efficiency of workpiece machining area by arranging a workpiece handling device below a spindle of the composite working lathe. The composite working lathe 1 comprises a spindle 20 and a tool spindle 30 on a bed 10. A workpiece handling device 40 arranged below the spindle 20 can be moved along a W axis parallel to the axis line C1 of the spindle. The workpiece handling device 40 has a workpiece handling head 50 that pivots in the direction of arrow F around an axis line C2, and grips the workpiece K1 via a gripper 60. The axis line C2 is an axis perpendicular to the vertical plane including the axis line C1 of the spindle 20, and the workpiece handling head 50 is raised for 90 degrees when the gripper 60 receives the workpiece K1 from the spindle 20. The angular position of the workpiece handling head 50 is allocated and the workpiece K1 is machined via a tool T1 on the tool spindle 30.

Abstract: A machine for processing optical work pieces having a work piece spindle for the work piece driving rotationally about a work piece rotation axis. At least one processing unit has a tool that can machine the work piece and an adjusting mechanism causes a relative movement between the work piece spindle and tool to selectively enable loading, unloading and processing of the work piece. The adjusting mechanism has a linear drive unit and a swivel drive unit that are stacked on each other to rotate the swivel drive unit and the work piece spindle about a swivel axis that is perpendicular to the work piece rotation axis, and has the linear drive unit move the work piece spindle along a linear axis that can be perpendicular to one of the swivel axis and the work piece rotation axis and parallel to or aligned with the other axis.

Abstract: A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %.

Abstract: A tilt table for use with a milling machine. The tilt table includes at least one pivot support attachable to the milling machine. The tilt table includes a table top pivotally attached to the at least one pivot support. The table top has two ends. The tilt table includes at least one movement assembly attached to at least one end of the table top to move the table top about the at least one pivot support.

Abstract: A workpiece table arrangement for a milling and drilling machine comprising a rigid machine tool frame comprising an upper cross girth, a machining unit movable on the front side of the cross girth along at least two coordinate axes by means of a motor and including a rotationally driven work spindle including exchangeable tools. The workpiece table is disposed in front of the machine tool frame and horizontally movable along at least one coordinate axis by means of a motor and comprises a tabletop for clamping at least one workpiece. The machine tool frame comprises two rigid side walls rigidly connected to each other by the upper crossbar and a front end.

Abstract: A machine tool for cutting machining of work pieces has a tool spindle and a work piece spindle. The work piece spindle is a hollow spindle having a through hole extending through the spindle and a holding mechanism for holding a work piece at one end. The work piece held in the holding mechanism can be machined through the through hole by means of a machining tool held in the tool spindle.

Abstract: The invention relates to a machining apparatus (1) having a frame (2) for the machining of a workpiece (3) that has a tool holder (4) that is mounted such that it can be shifted in a straight line in three axial directions (x, y, z) relative to a workpiece support (5) that is mounted beneath the tool holder (4), the workpiece support (5) being designed such that it can swivel the workpiece (3) about at least one axis (A, B). For improving the applicability of the machining apparatus, this machining apparatus according to the invention is characterized by a workpiece-holding table (6) that is designed such that it bridges the workpiece support (5) and can thus be firmly attached to the frame (2).

Abstract: A multi-spindle machining center for the chip forming processing of workpieces comprises a spindle group having at least two spindles arranged in a spindle row to mount a chip forming tool, and a workpiece support, on which at least two workpiece holders, correlated with the geometrical arrangement of the spindles, for holding workpieces for a simultaneous processing by means of the spindles, are arranged, the workpiece support having a beam-like longitudinal support member, bearing the workpiece supports, which at its longitudinal terminal regions is movably held on a respective workpiece support bearing structure and the spindles are guided for a movement toward the workpiece support in a first axial direction on a spindle linear guide arrangement.

Abstract: A multi-spindle machining center for the chip forming processing of workpieces comprises a spindle group having at least two spindles arranged in a spindle row adjacent to each other to mount a chip forming tool, and a workpiece support, on which at least two workpiece holders, correlated with the geometrical arrangement of the spindles, for holding workpieces for a simultaneous processing by means of the spindles, are arranged, the workpiece support having a beam-like longitudinal support member bearing the workpiece supports, and the spindles are guided for a movement toward the workpiece support in a first axial direction on a spindle linear guide arrangement.

Abstract: A small-sized, lightweight rotary table apparatus is provided. The rotary table apparatus has: a support rest for rotatably supporting a rotary table; and a base for turnably supporting, in a cantilever fashion, the support rest by a shaft element, which is protrudingly formed on the support rest, being inserted into a hole provided in the base. The shaft element has formed therein a hollow section for accommodating at least a portion of a drive mechanism for rotating the rotary table.

Abstract: A machine tool, and in particular a milling and drilling machine, which includes a rigid base on which an inclined support surface pointing forward and upward is formed. The support surface forms a support for a workpiece support rotatable about the central axis and comprises a support supported on the support surface and rotatable about its central axis. A workpiece table is provided on a bent support portion of the support. The axis of the workpiece table forms an acute angle with the central axis of the support surface. The support surface is laterally offset with respect to the vertical central plane of the base so that its central axis forms an acute angle with the vertical central plane of the base, and the workpiece table assumes a forward tilted posture in intermediate positions within a rotational angle range.

Abstract: A machining machine with an upper rotatingly drivable machining disc, the annular machining plane of which has a machining coating and is facing a lower machining plane, wherein the machining planes form a machining gap between each other. Plural rotor discs are arranged in the gap, which accommodate workpieces in recesses and which can be brought into rotation by means of a roll-off device, wherein the workpieces move along a cycloid path, wherein plural sensor elements for acquiring at least one machining parameter are arranged in the upper machining disc, distributed across its cross section, the sensor elements are each one coupled to an active or passive RFID chip and a reading device is assigned to the upper machining disc for reading out the RFID chips.

Abstract: A machine tool for the cutting machining of workpieces, in particular of metallic workpieces, has a first and a second tool spindle for receiving a first and a second machining tool, and it has a first and a second workpiece carrier for receiving a first workpiece and a second workpiece. The first tool spindle is movable relative to the first and to the second workpiece carrier in order to selectively machine the first or the second workpiece. Moreover, the first workpiece are movable relative to one another in order to transfer a workpiece from one workpiece carrier to the other workpiece carrier. The second tool spindle is movable relative to the second workpiece carrier in order to machine the second workpiece.

Abstract: Machine tool furnished with: a table (20) free to swivel about a horizontal swivel center axis, and having a table body (22) for carrying a workpiece, and an axially rotatable rotary shaft (23) disposed with the axis of the rotary shaft (23) coinciding with the swivel center axis, with a first end of the rotary shaft affixed to the table body (22); a support structure (15) for supporting rotatably the rotary shaft (23) via a bearing (15b); a swivel drive mechanism (25) for axially rotating the rotary shaft (23); riding members (31) abutting on an outer-peripheral locus on a rotary shaft (23) second end, off a portion, supported by the bearing (15b), of the rotary shaft (23); and hold-down mechanisms (32) arranged on the support structure (15), for supporting the riding members (31) and thereby pressing on and apply a load to the rotary shaft (23) outer-peripheral locus from above.

Abstract: A rotary table for a material processing machine such as a vertical milling machine utilizes direct drive motor(s) to precisely angularly position a work piece along one or more pivotal axes. The direct drive motor(s) are thermally insulated from the remainder of the machine to limit misaligning thermal expansion of the components of the machine. The motors may be symmetrically attached to their respective supports such that thermal expansion/contraction of the motor and surrounding components occurs symmetrically with respect to the motor to limit misalignment of the motor's rotational axis. A motor may mount to its respective support only at a first axial end thereof such that thermal expansion of a second axial end of the motor does not adversely shift the position of the first end. Axially narrow clamps selectively secure the rotors of the motors in desired positions.

Abstract: Machine tool furnished with: a table (20) free to swivel about a horizontal swivel center axis, and having a table body (22) for carrying a workpiece, and an axially rotatable rotary shaft (23) disposed with the axis of the rotary shaft (23) coinciding with the swivel center axis, with a first end of the rotary shaft affixed to the table body (22); a support structure (15) for supporting rotatably the rotary shaft (23) via a bearing (15b); a swivel drive mechanism (25) for axially rotating the rotary shaft (23); riding members (31) abutting on an outer-peripheral locus on a rotary shaft (23) second end, off a portion, supported by the bearing (15b), of the rotary shaft (23); and hold-down mechanisms (32) arranged on the support structure (15), for supporting the riding members (31) and thereby pressing on and apply a load to the rotary shaft (23) outer-peripheral locus from above.

Abstract: The present invention provides a multiple station tooling machine for the production of spirally grooved products and includes a base plate, a plurality of work stations distributed around the base plate and operable to effect selected tooling operations on work pieces, a support stand coupled to the base plate and supporting a support plate, and a turntable disposed above the support plate, the turntable being iteratively angularly movable. The multiple station tooling machine also includes a plurality of workpiece retaining elements and an actuating assembly including drive motors mounted on the support plate for moving the workpiece retaining elements to and between selected orientations. A plurality of generally vertical shafts each has a respective workpiece retaining element secured to one end thereof.

Abstract: In the multi-axial machine tool, a table unit is detachably mounted on the upper surface of the interior portion of a portal bed disposed on a leg. The table unit comprises a table base fixed to the upper surface of the leg, a turning table which, when it is viewed at a reference working position, is turnably disposed on an inclined turning surface of the table base formed so as to be inclined in a descending manner toward a front side of the machine tool, and a work table disposed on the table support portion of the turning table so as to be turnable around axes lying in parallel with the axis of a spindle.

Abstract: A worktable for numerical control machines, having a supporting structure hinged to the frame of the machine tool, and a faceplate fitted for rotation to the supporting structure to rotate, on command, about a first reference axis; the worktable having a first drive unit specially designed, on command, to rotate, and maintain rotation of, the faceplate at high speed about the first axis, and a second drive unit specially designed to vary, as required, the angular position of the faceplate about the first axis and with respect to a predetermined angular reference.

Abstract: A numerical-control milling machine having a supporting frame; a worktable fitted to the supporting frame so as to oscillate about a substantially horizontal first axis of rotation, and in turn having two rotary platforms, each for accommodating a workpiece; and two independent work units, each of which is fitted movably to the supporting frame, alongside the worktable, is positioned facing a corresponding platform, and provides for machining the workpiece on the platform; the two work units selectively operating either asynchronously, to machine the workpieces fixed to the two platforms independently of each other, or synchronously to perform the same machining operations simultaneously on the workpieces fixed to the two platforms.

Abstract: The present invention provides a remote controlled machine axis (or indexer) system that comprises a horizontal base plate, a first vertical plate, and a second vertical plate, wherein the first vertical plate and the second vertical plate are coupled to the horizontal base plate. The system further comprises a first arbor coupled to the first vertical plate, a second arbor coupled to the second vertical plate, a bearing positioned through the first vertical plate and the first arbor, a rotatable base plate coupled to the first arbor and to the second arbor, and a vice coupled to the rotatable base plate. The system also comprises a wireless transceiver coupled to the horizontal base plate, a servomotor coupled to the wireless transceiver and to the horizontal base plate, an integrated power source coupled to the servomotor, to the wireless transceiver, and to the horizontal base plate, and a reducer coupled to the integrated servomotor and to the second vertical plate.

Abstract: The object of the present invention is to provide a work pallet of simple structure constructed so as to be capable of machining five faces of a work by turning the work around a rotational axis.

Abstract: A machine tool for machining large-area workpieces. A column can be moved along one coordinate axis over a long bed. A machining unit, movable at the movable column along at least two other coordinate axes, has a pivotable working spindle. At least one approximately plate-like work carrier can be pivoted from a horizontal set-up position into a vertical machining position. A tripod configuration of the machining unit has a central support pipe and three telescopic legs spaced about 120° with respect to one another. The movable column has, in a central recess, a universal bearing supporting the central support pipe. In each of two lower and one upper recesses a universal bearing for the telescopic legs is provided. A retainer supporting the pivotable working spindle is positioned next to the work area on one end of the central support pipe and is rotatable about an axis of the central support pipe.

Abstract: A workpiece holding means for machine tools and more particularly for milling and/or drilling machines, comprising a pivoting bridge supported between two bearing walls. The bearing walls respectively laterally delimit a working area. At least one drive motor serves for pivoting the pivoting bridge, such motor being arranged outside the working area on at least one outer side of the bearing walls. The pivoting bridge is provided with a gear ring adjacent to one or both of the inner sides of the bearing walls, such gear ring being drivingly connected with the drive gear wheel driven by at least one drive motor. The bearing points or bearing pins of the pivoting bridge accordingly do not have to transmit any drive torque and are not subjected to any torque load so that more precise running and more precise positioning is possible.

Abstract: A machine tool has a table body and a drive line on a bed. The table body is linearly movable via a guide member having a sliding or rolling guide surface. The drive line has a ball screw or the like, and moves the table body along the guide surface. A pair of guide members are provided at positions in point symmetry about the position of the center of gravity of the table body. Moreover, a pair of drive lines having the ball screws or the like are provided at positions in point symmetry about the position of the center of gravity of the table body. Alternatively, drive line having the ball screw or the like is provided at the position of the center of gravity of the table body.

Abstract: A milling machine with a rotating drivable machine tool spindle perpendicular to a work piece stage slanting downward and away from the front side of the machine bed displaceable along the Z-axis that may be displaced via a first carriage along the Y-axis, and via a second carriage along the X-axis on guides mounted to the machine bed. A chip collection chamber is provided behind the work stage surface when in the operating position. The guides for the second carriage are provided on opposing struts of a portal frame parallel to the work tensioning surface, that is connected on its front side by means of lateral front support areas and on its rear side directly with the machine bed.

Abstract: The invention concerns a 3D milling machine and a 3D milling process. The milling machine comprises a milling unit (2) with a motor driven work spindle (4) for receiving a milling tool, a work table for clamping work pieces, guide and drive device for producing relative movement of the milling unit and the work table in at least three spatial directions, and a laser device (12) for emitting a laser beam. A laser assisted milling of free-form surfaces is made possible in that the milling unit is a spherical cutter (6), further, that a mounting device (30, 32) and a driving device (36, 38) are provided for producing a precise movement of the laser emitter (12) about a point on the beam axis, such that the laser beam (14) circles about a central axis, which intersects the axis of the work spindle (4) at an acute angle, as well as a mounting device and a driving device for at least one of pivoting and rotating of the work table (18) about at least one axis.

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 for at least triaxially machining work pieces (15) comprises a work spindle (10) and a working area (14) before the work spindle (10). A z skid (23), which is displaceable in the direction of the spindle (10), is disposed above the working area (14), with a work holding fixture (29) being joined to, and suspended downwards from, the z skid (23).

Abstract: A workpiece holding means for machine tools and more particularly for milling and/or drilling machines, comprising a pivoting bridge supported between two bearing walls. The bearing walls respectively laterally delimit a working area. At least one drive motor serves for pivoting the pivoting bridge, such motor being arranged outside the working area on at least one outer side of the bearing walls. The pivoting bridge is provided with a gear ring adjacent to one or both of the inner sides of the bearing walls, such gear ring being drivingly connected with the drive gear wheel driven by at least one drive motor. The bearing points or bearing pins of the pivoting bridge accordingly do not have to transmit any drive torque and are not subjected to any torque load so that more precise running and more precise positioning is possible.

Abstract: A machine tool has a table body and a drive line on a bed. The table body is linearly movable via a guide member having a sliding or rolling guide surface. The drive line has a ball screw or the like, and moves the table body along the guide surface. A pair of the guide members are provided at positions in point symmetry about the position of the center of gravity of the table body. Moreover, a pair of the drive lines having the ball screws or the like are provided at positions in point symmetry about the position of the center of gravity of the table body. Alternatively, the drive line having the ball screw or the like is provided at the position of the center of gravity of the table body. The machine tool can effectively suppress vibrations of a structure (such as the bed) generated during movement of a moving object (such as the table body) relative to the structure by the drive line, thereby shortening the machining time and increasing productivity.

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: Identical ring-shaped metal blanks are machined whereby each blank forms a plurality of identical components. The blanks are first machined on both sides, and then a stack of the blanks is clamped axially adjacent one another on an arbor. Tools machine the blanks for reshaping the blanks. One of the tools is a slitter which makes axial cuts through the stack to separate each blank into a plurality of components distributed around the axis.