Abstract: Wheel machining equipment is provided, including a first-stage turning system used for carrying out first-stage turning of a wheel, a high-precision connection system used for carrying out high-precision positioning conversion from first-stage turning to second-stage turning, and a second-stage turning system used for carrying out second-stage turning of the wheel. A wheel machining method is also provided.

Abstract: The present disclosure generally relates to a turning machine comprising a first spindle which can be set in rotation for gripping and rotating a first semi-finished product to be machined, in particular to be turned, and a second spindle which can be set in rotation and is likewise suitable for gripping and rotating a second semi-finished product to be machined. A first bar load magazine associated with the first spindle is configured to convey the first semi-finished product through a first opening of the first spindle into a machining area located between the spindles. A second bar load magazine associated with the second spindle may be configured to convey a second semi-finished product through a second opening of the second spindle into the machining area.

Abstract: In an embodiment, a machine tool includes two fixed modules and two movable modules each of which having a main spindle, a headstock, and a tool post being integrally formed, and a bed on which these are installed. The movable modules are provided on the bed to be movable in the Y-axis direction, the fixed modules are fixed on the bed on the opposite sides of the these movable modules, and a recess is provided next to the fixed module, the recess being formed by cutting out the bed. The movable modules are movable such that the axis lines of the main spindles of the movable modules are aligned with the axis line of the main spindle of the fixed module or the fixed module. The movable module is movable to the opposite position of the recess.

Abstract: Disclosed is a multiple machining apparatus for, upon receiving a plastic cylindrical work piece therewithin, performing multiple machining operations thereon. The apparatus includes a rotary fixture capable of rotation; the rotary fixture includes a proximal means for snugly holding a proximal portion of the work piece, and a distal means for holding substantially the rest of the portion of the work piece. The apparatus further consists of a movable table with a blade holder for holding a plurality of blades, each of which corresponding to a machining operation, the movable table and thereby the blade holder is capable of movement along X, Y and Z axes. The apparatus performs multiple machining operations on the work piece by virtue of the rotation of the rotary fixture, rotation of the blades, and the movement of the movable table, working against the rotating work piece.

Abstract: Material removal processes of a structure are disclosed. These processes can define several features. For example, metal structure can include an interior recess surrounded by a sidewall. The structure can further include a base portion integrally formed with the sidewall. The sidewall can include an opening extending through the sidewall and into the interior recess. The sidewall can undergo a material removal process to include multiple curved regions. The sidewall, the first curved region, and the second curved region can be polished to include a reflectivity different than a reflectivity of an exterior region of the base portion. A single multi-axes lathe having multiple spindles performs several material removal processes under a continuous machine cutting process. The spindles may include clamping features that allow a first spindle to perform a first operation then pass the metal structure to a second spindle. Additional processes include lapping, polishing, and linear brushing.

Abstract: A lathe (1) with a simple construction that is capable of making the relative displacement of a headstock (2) and tool rest (3) due to thermal deformation smaller. The lathe (1) comprises: a head including a headstock attaching section (51), and a slide attaching section (52) which has a portion with a height lower than the headstock attaching section; a headstock (2) attached to the headstock attaching section (51); a slide section (6) attached to the slide attaching section (52); and a tool rest (2) provided laterally to the headstock (3) and attached to the slide section (6). The headstock (2) is attached to the headstock attaching section (51) slanted to the tool rest side with respect to the direction in which the headstock (2) and the tool rest (3) are lined up.

Abstract: A turning device has two turning stations, each with a rotatable work piece spindle to hold a lens blank, each lens blank with a turning tool for the machining of a lens blank. A method for the operation of the turning device, wherein first and the second lens blanks are simultaneously machined with the turning tools is disclosed. Control electronics attune drive signals to each other such that certain drive signals for fast tool servomotors of the turning tools accomplish at least a temporary or phase-wise opposite running of the fast tool servomotors for vibration dampening. A fabrication mechanism is provided for the manufacturing of eyeglass lenses from lens blanks with a milling device and a turning device along with a method for operating the fabrication mechanism.

Abstract: A controller has a varying speed signal generation unit generating a varying speed command signal varying at predetermined amplitude and period, a current control unit generating a current command signal based on the varying speed command signal, a feedback control unit generating a correction signal based on a deviation between the varying speed command signal and a present rotational speed of the spindle motor and adding the correction signal to the current command signal, and a learning control unit calculating a disturbance component caused by cutting resistance based on the deviation every predetermined rotation angle of the spindle motor and, in synchronism with a rotation angle of the spindle motor corresponding to the varying speed command signal input into the current control unit, generating a compensation signal based on the disturbance component corresponding to the rotation angle and adding the compensation signal to the varying speed command signal.

Abstract: A rotatable buffer turret apparatus on which plural pairs of punches and dies to be set on a turret of a turret punch press are set, includes an upper buffer turret on which punch attachment holes in which the punches can be set are arranged circularly, and a lower buffer turret on which die attachment holes that is associated with the punch attachment holes and in which the dies can be set are arranged circularly. The upper and lower buffer turrets are rotatably attached to a single rotary shaft. A diameter of the lower buffer turret is made larger than a diameter of the upper buffer turret. The die attachment holes are formed in a circular die attachment area having a diameter larger than the diameter of the upper buffer turret. According to the apparatus, a tool exchange manually operated by an operator can be done easily and efficiently.

Abstract: A clamping device configured to automatically pull and clamp workpieces includes a clamping module and a driving module. The clamping module includes a sliding block, two clamping members positioned at two sides of the sliding block, and a connecting plate connected to one end of the sliding block. The driving module includes a driving member. The sliding block defines at least one pair of guiding grooves, and a distance between the paired guiding grooves is increased in a direction toward the connecting plate. The two clamping members are mounted on the guiding grooves of the sliding block in a sliding way. The connecting plate is fixedly connected to the driving member. When the connecting plate and the sliding plate are driven by the driving member, the two clamping members move toward or away from each other to clamp or release the workpiece.

Abstract: An online real-time cutter breakage monitoring method uses a plurality of signals generated in three consecutive time periods by a vibration acceleration during a cutting process conducted by a CNC machine tool, and compares a difference between a maximum value of signals in each time period and an average value of the signals and a difference between the average value of signals thereafter and an idling critical value to output a first cutter breakage signal and a second cutter breakage signal simultaneously and determine the occurrence of a cutter breakage and shut down the CNC machine tool immediately to improve the determination speed and accuracy, so as to avoid unnecessary shutdowns or hindering the manufacturing flow.

Abstract: A universal tool mounting system for a machining center relates to CNC machine tools, comprising a main drum into which mounts a plurality of tool holder unit stations, these create a platform to attach, mount and interchange tool holder units on each station, where each tool holder unit is chosen from a designed selection which can turn, mill, bore, drill and rapidly machine components with multicut tools or alternately each performs a combination of these operations and each holds a plurality of tools. The main drum is indexed to position the tool holder unit station with the attached tool holder unit to the operative position, then the tool holder unit station is indexed to position a selected tool to the machining position. The tool holder unit stations also provide live tooling functions to any attached live tooling tool holder units. Tool holder unit stations can also be preindexed.

Abstract: The present invention relates to a tool carrier 62 for a machine tool, in particular a lathe, having a rotary shaft drive for a numerically controllable rotary shaft B for rotating the tool carrier 62, a first tool turret head 62A carrying tools, rotatably mounted around a first turret axis, and a second tool turret head 62B carrying tools, rotatably mounted around a second turret axis, the first tool turret head 62A and the second tool turret head 62B being positioned on opposite sides of the tool carrier 62 with respect to the axis of rotation of the rotary shaft B. The present invention also relates to a machine tool, in particular a lathe, having a tool carrier 62 of this type.

Abstract: A method for manufacturing a dental prosthesis is disclosed. The method includes a first step of photographing a patient's mouth with a dental cone beam CT, a second step of converting CT data photographed at the first step into a CAD file, a third step of designing a shape of the dental prosthesis with the CAD file using CAD software, a fourth step of correcting the shape of the designed prosthesis using occlusion simulation software, a fifth step of converting the shape of the prosthesis which is designed finally into manufacturing data, and a sixth step of transmitting the manufacturing data to a dental prosthesis manufacturing machine, thus manufacturing the dental prosthesis.

Abstract: A machine and method for punching an aperture through a hangtag and securing a two-piece eyelet to the same is disclosed. The machine has a frame, a table, a platform, a plurality of hangtag holders, a loading station, a punching station, an eyeleting station, and an unloading station.

Abstract: The invention relates to a device for use in production of bevel gears. The device comprises a turning machine (22), with a working spindle (22.1) and a counter-holder (23), arranged co-axially to a rotational axis (B1) of the working spindle (22.1) for the coaxial tensioning of a workpiece blank (K1). A multi-functional tool holder (24) is provided, which may be displaced relative to the workpiece blank (K1) held in the turning machine (22) and comprises a tool base (25) mounted to rotate about an axis (B2). The tool base (25) is provided for fixing one or more tools. A tool housing (26) with milling head (27) is provided, the tool housing (26) being displaceable relative to the workpiece blank (K1) held in the turning machine (22) and the milling head (27) is mounted to rotate about a milling head axis (B3).

Abstract: A dental prosthesis manufacturing machine is disclosed. The machine includes two spindles each having a roughing tool and a finishing tool, a workpiece holder for holding a workpiece which forms the dental prosthesis, and a base supporting the two spindles and the workpiece holder. The machine is capable of simply alternating the roughing tool with the finishing tool according to the accuracy required when the workpiece is machined.

Abstract: In order to improve a machine tool comprising a first spindle for accommodating a workpiece and a first carrier for machining units movable along an X axis, which can be moved relative to one another along a Z axis, a second carrier which is movable along an X axis and with which machining units can be moved into or out of a functional position associated with the first spindle in a transverse direction extending transversely to the X axis and transversely to the Z axis, as well as an additional carrier for machining units in such a manner that it offers optimum possibilities for the machining of a front side of a workpiece and a rear side of a workpiece, it is suggested that the second carrier bear a second spindle, that as a result of movement of the second carrier the second spindle be movable in the direction of the Z axis and the transverse direction between a workpiece takeover position and at least one workpiece machining position and that the additional machining units be arranged in a spatial area, i

Abstract: A machining apparatus (1) for machining rotation-symmetrical workpieces (10), comprising a machine frame (4), which has a vertical front face (11), further comprising at least one vertical workpiece spindle (2) that is arranged on the front face (11) and can be driven rotatorily, comprising at least two tool holders (3 and 3a), which are arranged on the front face (11) displaceably horizontally and vertically by means of compound slides (5 and 5a), further comprising a conveyor (9) for workpieces (10), and a loading and unloading device (13), wherein the workpieces (10) can be transported by the conveyor (9) in a direction parallel to the front face (11).

Abstract: A punching assembly includes a die base, a sleeve, an adjusting screw, a pull portion, a latching block, an elastic element, a fixing ring and a stop member. A top of the die base is received in the sleeve. The adjusting screw includes a contact end, a mounted end inserting into the sleeve and connecting to the top of the die base, and a latching portion located between the contact end and the mounted end. The pull portion is disposed around the sleeve. The latching block engages the latching portion. The elastic element is disposed around the adjusting screw, supporting the latching block. The fixing ring surrounding the adjusting screw is fixed on the sleeve. The stop member, contiguous with the fixing ring, prevents axial movement of the adjusting screw.

Abstract: In conventional ram-driven presses, the downward stroke of the ram into a tool causes acceleration of the tool, thereby facilitating an operation on a workpiece by the tip of the tool. While the ram stroke is found to impart sufficient dynamic energy to the tool to facilitate the necessitated operation by the tool tip, there are other more efficient, and in turn, more effective, means and methods of actuating the tool tip, with such means and methods being facilitated from energy derived from the tool's acceleration or from energy from other external sources.

Abstract: In order to improve a machine tool for machining a workpiece by a relative movement between the workpiece and a tool, comprising a first receiving device for the workpiece or the tool, a compound slide system with a second receiving device for the tool or the workpiece and comprising a drive device for moving the second receiving device in relation to the first receiving device, which drive device acts at least two spaced-apart points of application by at least three drive struts extending parallel to at least two different directions and each with a pivot joint, and with which drive device the at least two points of application can be positioned by means of the at least three drive struts, in such a way that exact positioning of the second slide element can be achieved by structural measures, it is proposed that four drive struts of invariant length, each with a pivot joint, act on the slide element, each of which struts is pivotally connected to a guiding slide, which is guided in a linearly movable manner

Abstract: A dual disc type of tool turret device is powered by means of single main power source, which also serves to power the spindle of the machine; the turret device includes an inner and outer tool turrets; when power is transmitted from the main power source through a transmission element, a piston clutching piece, and rotary shaft (A), the inner turret will be rotated to carry out a tool-choosing operation; when power is further passed on to rotary shaft (B) through rotary shaft (A), the inner turret will be rotated to carry out a tool-choosing operation; after the tool-choosing action, power is supplied to the spindle of the machine in order for the machine to carry out a machining operation.

Abstract: A turret includes a central shaft, a piston sleeve positioned around the central shaft and having moving sticks thereon, a push rod, an actuating seat, and internal and external turrets; the piston sleeve is left and right movable by a power source; the moving sticks are passed through a ringed sleeve, which props a push rod passed through a fixed clutch claw, and facing the actuating seat; the actuating seat includes a rotary shaft, a pivotal shaft, and a toothed ring seat; the piston sleeve can be moved such that the moving sticks and the push rod move forwards, and the rotary shaft engages the toothed ring seat for a tool of a straight tool seat to function; alternatively the piston sleeve can be moved such that the moving sticks and the push rod move backwards, and the rotary shaft disengages the toothed ring seat for allowing replacement of the toothed ring seat.

Abstract: A modular base plate system is for use with a CNC machine for holding workpieces during manufacturing. The system includes a “turret-style” base plate having a plurality of stations positioned around the side of the base plate. Each station comprises a U-shaped pocket machined or otherwise formed in the base plate sidewall. The base plate system further includes a number of fixture blocks that fit in the pockets, with each block having a holder for holding workpieces. In operation, workpieces are attached to the fixture blocks, the fixture blocks are inserted into the pockets, and the fixture blocks are removably secured to the base plate. Then, the base plate is affixed to a CNC machine in a standard manner, e.g., using a pallet or rotary table or the like. In this manner, machining operations can be performed on a number of parts in sequence before any part changeover is required.

Abstract: A splitting blade changing device for a block splitter, comprising a revolving mechanism in which an upper rotary member is suspended by a supporting plate which is moved up and down by a cylinder installed in an upper part of a gate-like frame, a plurality of upper blades are held on a circumferential face of the upper rotary member, a slit is provided in a table which is supported in a lower portion of the gate-like frame via buffer members, an lower rotary member fixed detachably on a bottom plate of the gate-like frame is installed in a lower part of the table, a plurality of lower blades facing the upper blades are held on a circumferential surface of the lower rotary member such that one of the lower blades protrudes from the table surface via the slit of the table, and the upper and lower rotary members sequentially select and install the upper blades and lower blades.

Abstract: A tool turret mechanism includes internal and external tool turrets, a toothed ring secured to the internal tool turret, a central shaft secured to the external turret, a power switch, and a clutch; the central shaft has a piston fitted thereto; the power switch is used for providing power to the internal and the external turrets through the toothed ring and the shaft respectively; the clutch includes a fixed clutch claw, external and internal ring clutch claws, which are respectively securely connected to inner edge of the internal turret, and inner edge of the external turret; the ring clutch claws will rotate, and engage each other; when the piston is actuated, and displaced, the external turret will be forced to change position, and both the turrets will be left and right displaced between a first position, in which they engage the clutch, and a second position, in which they disengage the clutch.

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: The present invention provides a lathe, comprising a machine frame, a first working spindle with a first workpiece receiving means, at least one first tool slide with a tool carrier, a second working spindle with a second workpiece receiving means which faces the first workpiece receiving means, and at least one second tool slide with a tool carrier, The machine frame has an elongated machine base member, having a first support section and a second support section arranged to follow the first support section. Each support section has a base side, a spindle support side located opposite this and two slide support sides located opposite one another and between the base side and the spindle support side. The first working spindle is arranged on the spindle support side of the first support section and the second working spindle is arranged on the spindle support side of the second support section.

Abstract: A method and apparatus for adapting a turret extender to Computer Numeric Controlled (CNC) lathes, equipped with a main turret which is indexable about an indexing axis is disclosed. The disclosed turret extender mounts directly to the Original Equipment Manufacturer's (OEM) turret to extend the maximum turning diameter of the lathe by augmenting the original tool mounting configuration. The turret extender can accommodate, individually or in combination one or more standard tools, one or more modular tools and one or more relocated tools either standard or modular. By attaching to an OEM turret, the turret extender utilizes the original indexing electronics and hydraulics of the OEM main turret. The turret extender therefore provides enhanced machining capability in a cost efficient manner.

Abstract: An apparatus for molding and inserting in caps liners made of plastic material dispensed by an extruder, comprising: a dosage carousel; a molding carousel; an insertion carousel; a cap feeder for feeding the insertion carousel with caps, the carousels being rotatable about vertical axes and provided with seats for supporting multiple shuttles that are angularly equidistant concentrically to the rotation axes of the respective carousels, the dosage carousel having assemblies for taking in succession doses of plastic material from the extruder and depositing them onto the shuttles, the molding carousel having assemblies for molding in succession liners on the shuttles and the insertion carousel having assemblies for removing in succession the liners from the shuttles and inserting them in respective caps fed by the feeder; and a first, second and third star, for shuttle transferring at the respective carousels.

Abstract: A orientation device including two turrets, carrying a plurality of punch-die pairs, are rotatable to carry a punch-die pair to a work station and, simultaneously, another punch-die pair to a changeover station. A magazine of punch-die pairs comprises at least one pair of discs joined to each other and carrying a series of punch-die pairs. The discs are selectively rotated to take a predetermined new punch-die pair to a collection station. At least one exchange arm is rotated by a corresponding servomotor and carries at least one gripper element, axially and radially moveable with respect to the arm, independently of each other.

Abstract: The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, eng flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantle is provided with a number of openings extending through the mantle and/or recesses formed into the outer surface of the mantle, which openings and/or recesses form a regular pattern. Solid connecting portions in the outer surface of the mantle around said openings and/or recesses are opened so that, from each opening and/or recess, there is a connection, provided in the form of a groove or an additional recess extending into the outer surface of the roll mantle, with at least each of the openings and/or recesses closest to it.

Abstract: A machine tool (1) has at least one but preferably two machining units (13, 14), which are assigned to two workpiece receptacles (8, 9). The machining units (13, 14) are adjustable in three axes (X, Y, Z), and they can each reach both workpiece receptacles (8, 9). The machining units (13, 14) are oriented such that their work spindles (11, 12) are in a preferably right space angle to one another. As a result, they can be moved past one another without colliding. Moreover, they can also work on the same workpiece at the same time. The workpiece receptacles are positionable independently of one another about a preferably but not necessarily common pivot axis (S). The workpieces are also rotatable about an axis (V) perpendicular to the pivot axis. This arrangement enables flexible machining of the workpieces from arbitrary directions in space.

Abstract: In a tool turret for a machine tool, in particular, a lathe, comprising a turret head rotatable about a turret indexing axis, the turret head tapering on either side of a diameter plane of the turret head extending perpendicularly to the turret indexing axis and having on each side of this diameter plane a circular ring-shaped row of tool stations which is concentric with the indexing axis, each of the tool stations having a tool receiving means for clamping a toolholder for a machining tool, in order to increase the machining operations which are performable with a tool turret and the machining accuracy, such a tool turret is so designed that: each tool station comprises a planar contact surface formed by the outer surfaces of the turret head for a toolholder; the contact surfaces of the two rows of tool stations define regular pyramids of identical shape which point away from one another and whose axes coincide with the turret indexing axis; each row of tool stations has at least one tool receiving means fo

Abstract: The linewidth of a distributed feedback semiconductor laser or a distributed Bragg reflector laser having one or more second order gratings is reduced by using an external cavity to couple the vertical emission back into the laser. This method and device prevent disturbance of the main laser beam, provide unobstructed access to laser emission for the formation of the external cavity, and do not require a very narrow heat sink. Any distributed Bragg reflector semiconductor laser or distributed feedback semiconductor laser that can produce a vertical emission through the epitaxial material and through a window in the top metallization can be used. The external cavity can be formed with an optical fiber or with a lens and a mirror or grating.

Abstract: To machine coarse base material and to finish-turn the preturned blank, first the coarse base material is held in spindle (1) of stationary headstock (2). Then the coarse base material is preturned with first tool slide (3). The work preturned in this way is thereupon picked off by pick-off spindle (7) and the work now sitting in pick-off spindle (7) is cut off with a cropper on first tool slide (3). The back of the preturned work and inside diameter are machined by second tool slide (9), and for finishing of the work in the outer area and on the end face it is picked up by another spindle (10).

Abstract: A system for performing machining operations on different portions of workpieces comprising a plurality of workstations including a lathe disposed along a predetermined path, in the present instance, a circular path. A turntable supports a plurality of workpiece chucking devices equi-spaced circumferentially around the turntable. The turntable rotates relative to the workstations to position a workpiece chucking device at each workstation permitting different machining operations to be performed on workpieces simultaneously. The chucking devices are moveable on the turntable in a radial direction to present the workpieces to the various tools at the workstations. The workpiece chucking devices include spindle motors and means for synchronizing the speeds of the spindle motors of the chucking devices with the lathe motor.

Abstract: A numerically controlled lathe with a stationary headstock and a work spindle, mounted rotatably in the headstock, for holding a work in a first clamping includes a counter spindle for holding rotatably the workpiece in a second clamping. The lathe also has a tool turret, which can be indexed around an axis and which is mounted on a first slide, movable in two directions that are perpendicular to each other. This first slide also supports the counter spindle. A second tool holder is mounted next to the work spindle. The counter spindle and the tool turret are mounted on the first slide in mutually variable configuration; and the second tool holder is mounted on a second slide, which can be moved at least in a direction perpendicular to the work spindle axis. This second tool holder holds two groups of tools, one of which is mounted and designed for machining the work at the work spindle and the other is mounted and designed for machining the work at the counter spindle.

Abstract: A CNC automatic lathe has at least one carriage system having an X, a Y, and a Z axis that carries a tool revolver designed as a so-called disk revolver for working with lathe tools and rotary machining tools. In order to reduce as much as possible the distance between a defined cutting plane for the turning process and the carriage system, the Y axis forms with the normal to the cutting plane a relatively small acute angle (beta), so that when the tool revolver is rotated in a controlled manner around its axis, a rotatively driven machining tool mounted on the revolver and located in its working position is swivelled with its axis of rotation through an acute angle out of the cutting plane in the direction of the carriage system. The machining area of the machining tool thus described a movement with a component that extends in the minus direction of the Y axis.

Abstract: A punch press having a rear address configuration is described in which a forward facing carriage cross slide is mounted within the throat space of a punch press main frame and an auxiliary turret frame mounts the punch and die rotary turrets separately from the main punch frame, avoiding the need to prevent turret misalignment by main frame deflection during punching. Separate turret modules also allow matching different turret configurations to various punch press configurations. A turret module having different diameter independently driven upper and lower turrets is also disclosed, allowing a greater number of dies than punches to be stored to allow any several dies to be mated with a particular punch for proper punching with various materials.

Abstract: In an automatic lathe, a rotatable turret head is supported on a cross slide arrangement for longitudinal and transverse movements with respect to a headstock spindle. At least one counter spindle, associated with the headstock spindle, clamps a workpiece to be severed from the workpiece rod material. The counter spindle and at least one tool holder are arranged on the turret head whereby either the Counter spindle or the tool holder can be moved selectively into alignment with the headstock spindle by the rotation of the turret head. Additional tool holders, disposed spaced and parallel to each other on an additional tool carrier, can be moved selectively into alignment with the counter spindle. At least one turret head tool holder is a multiple tool holder with a plurality of tool clamping devices arranged spaced and parallel to each other. In one turret head position, one tool clamping device is opposite the headstock spindle and the counter spindle is opposite one of the additional tool holders.

Abstract: A workpiece handling system especially for carrying out computer-controlled welding operations has a workpiece table which is rotatable between indexed stations in one direction and a coaxially-mounted support for work-performing apparatus which is rotatable in both directions, either with or contra to the workpiece table. While workpieces are being loaded and unloaded at one station, work can be performed at or during indexed movement between other stations, the work-performing apparatus then rotating contra to the workpiece table to find the next workpiece to be worked on.

Abstract: A metal-working machine (10) comprises a first machining unit including a machining head (12) and means (11) in the form of a clamp for bringing, holding and axially displacing the material to be machine. The machining head (12) carries tools (13 and 14) which rotate and move relative to two axes X.sub.1 and X.sub.2 perpendicular to the axis (15) of the material. The machine also comprises a main turret (16) equipped with machining stations (17) and stations for receiving (18) the parts. In a first option, it comprises a second machining unit (2) carrying machining stations (23). In a second option, it comprises a third machining unit (24) carrying a machining station (26) equipped with a possibly rotating tool (25). In a third option, the machine is completed by an auxiliary turret (20) carrying a machining station (21).

Abstract: A method of machining cylindrical workpieces, mainly cylindrical metallic workpieces such as cylindrical separate metallic workpieces and sequentially fed bar-like workpieces, into cylindrical products such as bearing outer and inner races and valve spools, by employing a bi-spindle numerically controlled machine tool provided with two parallel spindles capable of holding and rotating workpieces, respectively, and a single tool block unit capable of moving in two mutually orthogonal directions under the control of a numerical controller in accordance with a numerical control program, to precisely feed two separate groups of cutting tools mounted thereon and thereby accurately cut the rotating workpieces on the two parallel spindles alternately or simultaneously at a high production rate.

Abstract: A CNC lathe comprising two opposed spindle stocks (2a, 2b) and two turret type tool rests (3a, 3b), in which a base (1) is of a slant type, the first spindle stock (2a) is secured to the base (1), the second spindle stock (2b) is provided to be capable of being moved and located only in a direction to the spindle, and both the tool rests (3a, 3b) are arranged in the deep side of the spindle stocks (2a, 2b). The CNC lathe having said construction in which both spindle stocks include an independent spindle motor (21), a spindle indexing and driving device (23) capable of mechanically releasing connection, and encoders (27, 26) on the side of the spindle, and the indexing and driving device wherein an index motor (40) is rotated on the basis of a phase difference detected by the encoder to match a phase when the spindle indexing and driving device (23) is connected to the spindle 11), so when a work (16) is delivered between both the spindles (2a, 2b).

Abstract: Process for loading and unloading the main spindle of a lathe which comprises a turret provided with at least two drivable auxiliary spindles and which is combined with a workpiece handling device, wherein in order to shorten the machining time, the rotating main spindle is loaded and unloaded with the aid of the auxiliary spindles driven at the same rotational speed as the main spindle, and the auxiliary spindles are loaded and unloaded by the workpiece handling device when they point in the upward direction.

Abstract: The invention refers to an apparatus which allows the application of a round gasket or liner inside closures. The apparatus consists of a plastic material batching carousel carrying, on a horizontal plate a plurality of shuttles or molds peripherically distributed and whose top surface is provided with a recess or hollow. On the carousel are elements which take and leave batches of plastic material supplied by an extruder inside the recesses. A first star wheel at the bottom of the carousel is provided to transfer the shuttles having the batches therein towards a forming carousel where the batches of plastic material are pressed to form round gaskets. A second star is provided to transfer the shuttles with the molded gaskets toward a further carousel where gaskets are inserted into cups or closures.

Abstract: A method and an apparatus for manufacturing a workpiece in plurality of manufacturing steps with small time losses between successive manufacturing steps, which utilizes a small number of manufacturing machines, according to which the manufacturing machines and the transferring machines are controlled such that while one manufacturing step is being applied by one manufacturing machine and then the workpiece is being transferred by the transferring machine from that one manufacturing machine to another manufacturing machine for applying a next manufacturing step to the workpiece, the another manufacturing machine is prepare for the next manufacturing step by placing an appropriate one of the manufacturing press dies under the ram of the press machine of the another manufacturing machine by intermittently moving the plurality of manufacturing press dies.

Abstract: The conventional multiple-spindle automatic lathes are expensive on account of their complicated construction, and the production output and production possibilities are limited on account of the restricted number of work spindles utilized. The novel automatic lathe is to offer higher production outputs and more universal manufacturing possibilities with a simpler construction.The basic structure of an automatic lathe with eight tool spindles (10) for the manufacture of workpieces in eight successive machining stations resides in that, additionally to the number of basic tool stations (1 through 8), each basic tool station, except for the first, is once more included as an additional tool station (2 through 8) arranged in the same sequence of machining upstream of the basic tool stations (1 through 8) so that the total number of machining stations amounts to N=2n-1, a loading and unloading station being provided at the tool station (1).