Abstract: A machining apparatus is disclosed which includes a rotatable tool turret having a plurality of modular machine tools removably supported thereon in circumferentially spaced apart relationship, a transmission assembly for effectuating the indexed rotation of the tool turret, and a multi-disc variable-speed drive system for independently driving each of the modular machine tools supported on the tool turret.

Abstract: A pneumatic marking tool (35,123) is attached to one of the punch mounting holes (9) of the upper turret disk (3) of a punch press. When the punching striker (13) is moved down to its lower dead point, compressed air is supplied from a compressed air supply unit (103) to the marking tool to move the marking stylus (49, 129) up and down repeatedly at a high speed. At the same time, the work (W) is moved in a two-dimensional way by the Y- and X-axis work driving mechanisms (27, 29) of the punch press, in synchronism with the repetitive marking stylus motion, to engrave characters and/or symbols as a form of gathered dots all under control of the numerical control unit (33). Therefore, it is possible to mark or engrave any required characters and/or symbols without occupying a number of punch mounting stations of the upper turret disk and without the use of any punch press of high punching frequency, thus eliminating the laborious setting work required whenever the plate thickness of the work changes.

Abstract: A machine tool includes a machine table for receiving a workpiece, a headstock disposed above the table, a turntable mounted on an underside of the headstock and being rotatable relative thereto about a vertical first axis, and a spindle mounted on the turntable for movement in a direction oriented radially relative to the first axis. The spindle includes a chuck for supporting a machining tool for rotation about a second axis oriented eccentrically relative to the first axis. The spindle is rotatable relative to the turntable about a third axis oriented orthogonally relative to the first axis. A second spindle can be mounted on the turntable for rotation about the first axis.

Abstract: A positioning mechanism of a turret index which performs index rotation by the use of an index mechanism to transmit output shaft motion and perform positioning by a three-piece toothed coupler. The present invention uses a hydraulic system to control the division and the combination of the three-piece toothed coupling to attain the turret's precise positioning and comprises a piston ring on the output shaft. The area of the piston ring's end plane which is subjected to hydraulic pressure, is greater than the area of the slider's end plane inside the three-piece toothed coupler and its end plane is also subjected to hydraulic pressure. At the same time the three-piece toothed coupler is in meshing, the output shaft can obtain an inward pulling force to prevent the output shaft from propping up only a very small distance.

Abstract: A manipulating device for handling, in particular for orientating, workpieces, tools or the like, includes a workpiece head provided with a device for supporting at least one workpiece, a tool or the like, having at least one characteristic axis and drive device for rotating the workpiece head about a pre-established axis of rotation. The workpiece is supported so that the characteristic axis has a pre-established orientation, in other words a pre-established colatitude and longitude relative to a three-dimensional Cartesian reference frame which is defined by three mutually perpendicular axes, while the workpiece head can rotate about an axis of rotation which is inclined with respect to all three axes of the three-dimensional Cartesian reference frame and has a colatitude and a longitude other than those of the characteristic axis of the workpiece or of the tool.

Abstract: A tool-carrier turret having a high displacement speed, particularly for lathes and work centres the rotatable table of which is provided with a plurality of supports for fixed tools and a plurality of supports for tools of the rotating type. The turret is provided with a single motor for driving the rotating tools and for displacement of the table through respective mechanical transmissions, as well as a device for commuting the drive from the electric motor to one or other of the mechanical transmissions in synchronism with the device for locking and releasing the table. An encoder is connected to the drive shaft of the rotatable table via a mechanical coupling which makes it possible to obtain a complete rotation of the encoder shaft for each angular displacement of the table between two successive tools.

Abstract: Lathe with a workpiece spindle (28) defining a Z-axis as well as a tool carrier slide (56) bearing a tool carrier in the form of a tool turret (112) having a turret body and a turret head, the slide being displaceable in the direction of a first axis (X-axis) extending transversely to the Z-axis, whereby workpiece spindle and tool carrier slide are displaceable relative to one another in the direction of the Z-axis, the tool turret is pivotable about a second axis (Y-axis) likewise extending transversely to the Z-axis as well as transversely to the X-axis and the turret head is mounted on the turret body so as to be rotatable about an indexing axis extending transversely to the Y-axis, and with first tool receiving means on the turret head (114) as well as a second tool receiving means (142) mounted on the turret body (110).

Abstract: Tool turret for a machine tool, the turret head of which is designed to be equipped with drivable tools, wherein for shortening the times required for indexing the rotatable turret head a three-part HIRTH tooth system is used to lock the turret head and a coupling which is constructed such that it can be disengaged by rotation of the turret head is provided between a drive shaft of the tool turret and a tool spindle of a drivable tool.

Abstract: A turret machine tool has a slide table mounted on a machine base for movement toward and away from a workpiece to be machined. A turret head is indexably mounted on the slide table, and a plurality of multispindle heads mounted on the turret head at spaced angular intervals in an indexing direction of the turret head, each of the multispindle heads having a plurality of spindles disposed therein. A plurality of machine tools mounted on respective ends of the spindles, and a plurality of spindle gears are mounted on the spindles, respectively. A driven gear is mounted in each of the multispindle heads in mesh with the spindle gears through a train of gears. A drive gear is axially movably disposed in the turret head for movement into and out of mesh with the driven gear in one of the multispindle heads which has been indexed.

Abstract: A machine tool with a work supporting table is disclosed having a main shaft rail body with vertically extending sliding rails located in a vertical plane extending obliquely to a front face. A sliding machine seat is slidably mounted on the vertically extending sliding rails and has a first mounting surface extending parallel to the vertical plane of the sliding rails. A second machine seat having a second mounting surface located in a plane extending obliquely to the vertical plane of the sliding rails is rotatably attached to the first mounting surface. A main shaft machine seat is attached to the second machine seat.

Abstract: A turret machine tool includes a support base, a slide base slidably mounted on the support base and having a slant surface, a turret head indexably disposed on the slant surface of the slide base for indexing movement about an axis, and a plurality of machining spindle modules mounted on the turret head at equal angular intervals about the axis and projecting radially outwardly from the turret head. The turret head has a plurality of attachments each including an outwardly open cavity and an attachment frame defining the outwardly open cavity and having an outer attachment surface. Each of the machining spindle modules has a front module portion, a rear module portion extending rearwardly from the front module portion, and a front plate integral with the front module portion and disposed between and coupled to the front module portion and the rear module portion, the front plate having a attachment edge extending radially outwardly beyond the rear module portion.

Abstract: A universal turret system is provided and includes the capability of accommodating a wide range of multi-class tooling including manual tools, manual quick-change tools, semi or fully automatic tooling, and live or driven tooling. The universal turret system includes a plurality of tool adapters with each adapter being mountable at any station on the turret disk and with each tool adapter being designed to receive or drive a specific tool from the multi-tool class.

Abstract: A spindle head for a tool turret has a housing in which a spindle is mounted rotatably. A rotation lock for the spindle includes a bushing arranged to be longitudinally slidable but nonrotatable on the spindle. A securing element is provided on the bushing. The bushing securing element, in its work setting, engages a securing element on the housing, limiting the axial movement of the bushing relative to the housing in the direction of the form-locking engagement of the two securing elements, and can be disengaged by an axial movement of the bushing counter to the force of a prebiased spring in a direction away from the housing securing element. At least some of the cooperating surfaces of the securing elements in the work setting are inclined with respect to the axial direction to a degree that excludes self-locking.

Abstract: A toolholder turret (3) is movable in the X and Z directions relative to a work table (2) so that each of the grinding tools (9a, 10a, 11a 12a) can be presented to machine a surface of a workpiece (6). A support (20) of a truing unit (4) bears a rotary body (22), one arm (23) of which is provided at the end with a follower, while two vertical arms are provided with diamonds. The exact positions of the truing tools relative to a reference, which may be constituted by the detecting surfaces of the follower, are detected by means of a further follower (18) integral with a further table (13). Measurements taken by displacement of the latter follower are stored in a memory. Other measurements relating to the actual sizes and shapes of the grinding tools are likewise taken through displacement of the further table so that these tools are sensed by the detecting surfaces of the first-mentioned follower.

Abstract: An air powered milling tool supported in the upper turret of a turret punch press is cycled simultaneously with a hydraulically- or mechanically-powered punch press ram in a multiple-stage cycle to perform a milling operation on a sheet material workpiece retained between the upper and lower turrets of the punch press. The air-powered tool, which includes a punch head in coaxial alignment with a guide sleeve, drives an end mill which is contained within and is coaxially extendible through the guide sleeve toward the workpiece to perform a machining operation thereon. Hold-down bearings disposed at the end of the guide sleeve engage with the workpiece at a local region thereof. A spring-biased lifter disposed in the upper turret is engagable with the guide sleeve. In operation, the punch press striker impacts the punch head of the milling tool, urging the milling tool and air motor in the direction of the sheet material.

Abstract: A hollow column is provided for a tool turret with a housing that is to be connected to a machine tool or the like, with a drive motor, and with a tool disc which has receptacles for tools, the tool disc being mounted rotatably relative to the housing and being lockable in selectable angular positions. The hollow column is nonmoveable relative to the housing. A shaft which extends in the longitudinal direction of the column, and which can be driven by the drive motor is disposed within the hollow column. That tool, which is inserted into the receptacle that is situated in the working position, can be driven by the shaft. At least one line is provided in the column so as to be part of a system provided for the transfer of energy, lubricant, coolant, pressure or the like.

Abstract: A tool-rest driving device comprising a drive motor having its output shaft, a first rotatable shaft axially aligned with the motor output shaft and driven to rotate by the motor output shaft, a tool rest having at least one rotational tool, a reduction gear arranged between the first rotatable shaft and the tool rest for reducing the number of rotations of the motor output shaft, the tool rest being rotated at the reduced number of rotations, and a second rotatable shaft arranged coaxially of the motor output shaft for driving the rotational tool of the tool rest. A center axis of the rotational shaft, a center axis of the reduction gear and an axis of rotation of the tool rest are arranged on the same axis.

Abstract: A revolving head for machine tool including one fixed frame, one spindle-bearer turret movable in rotation with respect to this frame, at least two tool bearer spindles fitted to the turret, rotation devices for the spindles and automatic driving devices to rotate the turret. The turret includes a first element secured to the frame and a second element movable with respect to the first element. The automatic driving devices includes an axial piston and a rotary piston to move respectively axially and in rotation the second element of the turret with respect to the first element.

Abstract: Disclosed is a structure of a turret head provided with turning tool mounting mechanisms and revolving tool mounting mechanisms on the turret, wherein a turning tool can be mounted on the revolving tool mounting mechanism rotatably mounted on the turret. The turning tool is mounted on the turret at a holder of the tool for positioning and at the same time is tightly affixed to the revolving tool mounting mechanism at the tapered portion of the tool.Also provided is an engaging and disengaging mechanism for engaging and disengaging a gear of a unit drive shaft relative to a gear of a revolving tool mounting mechanism in preparation for mounting a revolving tool different in direction.This feature enables a revolving tool different in direction to be driven.Another feature is a provision of a lock gear. Locking the lock gear allows the revolving tool mounting mechanism to be employed for turning tools. The revolving tool mounting mechanism can be used for revolving tools when the lock gear is unlocked.

Abstract: A wood working machine comprises a carriage on which a plurality of working heads are mounted in a juxtaposed relationship, and a tool magazine and an exchanging unit provided on the carriage for each of the working heads such that exchanging of a tool can be performed on the working heads independently of each other on the carriage. A dust collecting passageway is formed between a motor for a spindle of each of the working heads and a motor hood for the motor, and an additional auxiliary dust collecting passageway is formed on each of rams on which the working heads are individually held. A wide dust collecting range is thus assured.

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

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

Abstract: A tool bit selection device as an accessory for a hand held commercial drill motor is disclosed. The selection device is in the form of a chambered cylinder that is supported on the face of the drill motor. The chambers of the cylinder hold individual tool bits that are adapted to be placed on the driving end of a drive spindle of the drill motor. The support and alignment of the selection device on the drill motor permits the compliance of the tool bit and the drive spindle in pitch, yaw, roll and radial offset. The selection device merely stores and positions the tool bits and does not provide bearing support of the tool bit when in working position.

Abstract: A plant for welding automotive vehicle bodies that are conveyed in succession in an assembly line to a single processing station having equipment for positioning, holding and welding different types of automotive bodies, a pair of opposed stationary frames pivotally supporting elongate members, which in turn rotatably support tool supporting units, each of which carries a plurality of tool assemblies. The elongate members pivot normal to the assembly line path to place the tool supporting units in and out of operating position; and the tool assemblies are revolvable about the rotatable tool supporting units to select one of the tool assemblies for a particular vehicle body type.

Abstract: A numerically controlled lathe which is capable of effecting combined machining comprises a frame constituting the main body, a main spindle driven to rotate, a main spindle chuck provided on the main spindle to hold a workpiece, a multiple-tool head having a plurality of tools, a turret head and a rear machining head. The multiple-tool head has three servomotors to move it along three axes which are perpendicular to each other. The body of the multiple-tool head has an annular frame structure. At least two rows of rotary and non-rotary tools for machining the workpiece are disposed on the multiple-tool head body in a direction parallel with one of the directions of movement. A tool driving motor is provided on the multiple-tool head body to drive the rotary tools. The rotary tools include a polygon machining tool for machining a polygonal workpiece. The multiple-tool head, the turret head and the rear machining head effect machining simultaneously or successively.

Abstract: A hydrogen storage electrode comprising a body of an alloy of the general formula, AB.sub.a, or a hydride thereof, in which A represents at least one element selected from the group consisting of Zr, Ti, Hf, Ta, Y, Ca, Mg, La, Ce, Pr, Mm, Nb, Nd, Mo, Al and Si, B represents at least one element selected from Ni, V, Cr, Mn, Fe, Co, Cu, Zn, Al, Si, Nb, Mo, W, Mg, Ca, Y, Ta, Pd, Ag, Au, Cd, In, Sn, Bi, La, Ce, Mm where Mm is a mixture of rare earth elements, Pr, Nd, Th and Sm provided that A and B are different from each other, and a is a value of from 1.0 to 2.5. The alloy has an alloy phase which is substantially a Laves phase of an intermetallic compound of A and B, and has a crystal structure of a hexegonally symmetric C14 type having crystal lattice constants, a and c, of from 4.8 to 5.2 angstroms and from 7.9 to 8.3 angstroms, respectively, and/or a cubically symmetric C15 type having a crystal lattice constant of from 6.92 to 7.70 angstroms.

Abstract: A turret head unit includes a turret head, a plurality of angularly disposed tool receiving spindles carried in the turret head, a spindle drive shaft rotatably mounted in the turret head, a clutch mounted on the spindle drive shaft and movable into and out of driving engagement with a tool receiving spindle in a working position, a turret rest rotatably supporting the turret head, indexing means including a main cam mounted in the turret rest and a disc-like pin wheel coaxially secured to the rear end of the turret head and adapted to engage the main cam so as to impart a rotational force to the turret head, clamp means including a first auxiliary cam mounted in the turret rest and a clamp member engaged by the first auxiliary cam for exerting a clamping force to the turret head in its indexed position as the first auxiliary cam rotates, and clutch operating means including a second auxiliary cam mounted in the turret rest and a cooperating member engaged by the second auxiliary cam for engaging and disengag

Abstract: In a turret apparatus with an automatic tool changer a turret head is rotatably provided on a body. The turret head has two main shafts arranged with an interval of 180 degrees about a rotary shaft. The two main shafts being disposed with an intersectional angle of 90 degrees therebetween so as to horizontally direct in an indexing position of the turret head. A rotary center of said turret head is horizontally directed so as to have an intersectional angle of 45 degrees with respect to each of said two main shafts. One of the main shafts is in on the working side when the other main shaft is on the stand-by side. An automatic tool changing arm and a tool stocker are arranged on the horizontal side portion of the main shaft on the stand-by side.

Abstract: Turret comprising a turret body and a turret head which is rotatable about an indexing axis relative to the turret body and in which several spindles are rotatably mounted. By moving away from the turret body in the direction of the indexing axis, the turret head is unlocked and made rotatable about the indexing axis. To enable one only or several selected spindles to be driven at a time and the remaining spindles to be locked against unintentional rotation, a drive shaft mounted in the turret body in spaced relation to the central indexing axis is released from the previously driven spindle when the turret head moves away from the turret body, and, in addition, each spindle has an associated locking mechanism which is arranged in the turret head and which is only released in the case of the spindle to be driven at that particular time when the turret head is locked on the turret body.

Abstract: Tool turret for NC automatic lathes comprising a turret body, in which a plurality of tool drive shafts arranged about a turret indexing axis are rotatably mounted, and comprising a main drive shaft coaxial to the turret indexing axis and in drive connection with the tool drive shafts via a miter gear arrangeed in the turret body, as well as a change-over gear for driving the tool drive shafts at different rotational speeds. In order to provide a space-saving and simple construction, the change-over gear is arranged in the turret body between the main drive shaft and the tool drive shaft and is designed as a gear adapted to be changed over only when at a standstill and having no idling state between the drive positions.

Abstract: A machining center for machining a variety of different workpieces. Tool heads with a wide variety of tools are transferred from a storage area and oriented and presented one at a time by a turret to a machine tool in which they are received, accurately located, securely clamped and driven to machine a workpiece. A transfer device moves tool heads from a tool head circulating mechanism to the turret.

Abstract: A program-controlled machine tool is described, for machining workpieces by means of rotary tools which can be brought into engagement with a workpiece under timewise control. The workpiece is disposed on a cross table which rests on a program-controlled rotatable workpiece table which in turn is guided along a first main axis. The tool support region has a vertical support post which bears on its top a translational carriage which is vertically adjustable and is movable in a direction perpendicular to the vertical. Such carriage further bears tool mounts. The mounts comprise a common revolving head the rotational axis of which coincides with the vertical movement axis of the said translational carriage. The revolving head has at least two program-controlled rotatable tool tables the rotational axes of which perpendicularly intersect the rotational axis of the revolving head in a single point. The rotatable tool tables are also program-controlled and bear holding members for various working units, e.g.

Abstract: An indexing plate (9) is mounted on a shaft (7) which is supported against axial displacement on a machine frame (1) and is stepwise rotatably drivable, said plate carrying clamping devices (10) arranged around the shaft and each intended for one workpiece (11). On either side of the indexing plate (9) a unit carrier (20) is arranged axially displaceably with respect to the shaft (7). For displacement of the unit carriers (20) towards the indexing plate (9) into a stop position and for displacement of the unit carriers (20) away from the indexing plate a displacement drive (31) is associated with each of said carriers. The two unit carriers (20) are guided solely on the shaft (7) and are supported on the machine frame (1) only against rotation.

Abstract: A machine tool comprises an upstanding column, a tool-driving unit vertically movable on the column, and a pair of guide rails on a front surface of the column to extend vertically thereon and horizontally spaced apart from each other for guiding the upward and downward movement of the tool-driving unit. The tool-driving unit includes a lift frame on the guide rails and a tilting-type turret head which is supported on a front surface of the lift frame and is rotatable about an axis inclined relative to the longitudinal direction of the frame in a horizontal plane. One of the pair of guide rails is relatively disposed forwardly of the other guide rail, so that the individual guide rails both assume positions close to the turret head thereby to minimize the amount of overhang of the tool-driving unit.

Abstract: A compound turret for machine tools such as latches or the like having rotating and non-rotating tooling turrets mounted on a single housing. The compound turret includes a primary drive and a secondary drive. The primary drive includes a compound turret indexing unit operable to index the rotating and non-rotating tooling turrets into the turret operating and turret storage positions. The compound turret indexing unit consists of a harmonic drive that enables the operator to incrementally vary the turret operating position. The harmonic drive achieves high reduction ratios in a single stage thus eliminating the cumbersome gear systems usually implemented to achieve the reduction ratios required. The primary drive further includes a non-rotating tool indexing unit. The non-rotating tool indexing unit is operable to index the non-rotating tooling. The non-rotating tool indexing unit consists of a harmonic drive unit similar to the compound turret indexing unit.

Abstract: A casing is rotatably and stoppably held on tool supporting means, a rotary tool spindle is rotatably supported on the casing so as to have a shifted rotary center with respect to the rotary center of the casing, power transmission means is rotatably supported on the casing, and the power transmission means and the rotary tool spindle are engaged through eccentric engagement means. The movement of the rotary tool in the Y-axis direction is performed by integrally rotating the casing and the rotary tool spindle. The machining is performed by rotating the power transmission means in the state where the casing is held stationary, thereby to rotate the rotary tool with respect to the stationary casing through the eccentric engagement means.

Abstract: A machine tool has a base (6), a XY table (5) arranged at the base (6) for holding a work (W) thereon in such a way that the XY table (5) can move together with the work (W) in a first direction and a second direction perpendicular to the first direction, means (2, 3) for controlling the XY table (5), an indexing table (17, 67) placed above the XY table (5) in such a manner that the indexing table (17, 67) can move for the indexing purpose, and a plurality of spindle heads (24, 25, 44, 45) attached to the indexing table (17, 67).

Abstract: A machine tool in which processing can be performed on the workpiece from two directions and in which various types of machining processes other than turning can be performed on the workpiece by means of a turret on which a plurality of tools are mounted. The turret is freely indexible on a tool rest which is mounted on a horizontal guide for horizontal positioning. The horizontal guide is mounted for vertical positioning on a vertical column which is in turn mounted on a horizontal slide member the axis of which is perpendicular to the horizontal guide section supporting the tool rest. A workpiece holder is mounted for free rotation on the frame of the machine tool. The turret may thus be positioned and indexed so as to select one of a variety of processing tools such as a cutting tool, a drill, a milling cutter, or the like, and to perform the processing in either a horizontal or vertical direction.

Abstract: This invention relates to processes for making jewelry comprising one or more rows of precious stones set in a support made of precious metal. One or more rows of cylindrical housings extended by a conical seating and a counter-bore are machined in the support; the metal bridges separating, the housings are cut out with a rotating mill; a stone is placed in each housing and is set by means of a tool which is applied on the islets of metal remaining between the housings.

Abstract: An improved machine tool (10) has a driven cutting tool (T) which is rotatable about an axis (C) extending perpendicular to the axis (B) of rotation of a turret (200) when a toolholder (300) is mounted on an end face (203) of the turret (FIG. 7). The cutting tool is rotatable about an axis extending parallel to the axis of rotation of the turret when the toolholder (300) is mounted on a side face (204) of the turret (FIG. 10). A drive assembly (600) is operable to drive the cutting tool when it is mounted on either the end face (203) or the side face (204) of the turret. The drive assembly (600) extends through the turret and has output at a location disposed between the end and side faces (203, 204) of the turret. A pair of actuators are (400, 500) provided to operate the toolholder (300) to engage and release the cutting tool (T) when the toolholder is mounted on either the end face or side face of the turret.

Abstract: A milling and drilling head for a machine tool has an input shaft housed in a stationary case also incorporating a control means drivingly connected to a ring gear which is fast with a moving case portion accommodating at least one tool holding spindle driven off the master spindle of the machine tool and being set at an angle to the X-axis thereof.

Abstract: A turret for an automatic lathe has a coupling sleeve connected with the driven shafts at each of a plurality of tool stations and actuated by a plunger displaceable parallel to the turret axis to couple the sleeve with the driven shaft when the tool is positioned at the working location. All of the driven shafts are continuously rotated by gearing connecting the driven shafts with the drive shaft extending along the axis of the turret.

Abstract: A tool holder is mounted upon the crossfeed arrangement of a machine tool, e.g. a lathe, and have a swing part which is rotatable about one axis, a cutter head which is rotatable relative to the swing part about a second axis perpendicular to the first axis, the first axis being orthogonal to a plane of displacement of said crossfeed arrangement. Means is provided for the programmed positioning of the head relative to the swing part and the swing part relative to the crossfeed arrangement so that the angular positions of the cutter can be effected under programming control within wide range of angular orientations and receiving outside the X-Z plane is possible.

Abstract: A tool carrier for lathes, in particular a tool turret, having a plurality of stations for holding tools, at least one of which is provided with a driven tool spindle designed as a hollow shaft and rotatably mounted in a housing. This tool spindle accommodates a tool chuck which is coaxial to and non-rotatably connected with the tool spindle and is displaceable in axial direction relative to the tool spindle for opening and closing. The tool carrier also has a threaded spindle connected in axial direction with the chuck and a nut arranged thereon for opening and closing the chuck. To simplify the construction only one drive shaft is provided and this shaft is constantly coupled with the nut and connected with the tool spindle via a releasable coupling.

Abstract: A drilling machine tool is disclosed having a machine tool body with a movable frame which is movable in the three axial directions X, Y and Z, of a rectangular coordinate system.

Abstract: A live tooling turret assembly comprising a stationary housing, a turret top plate movably mounted on the housing for axial and rotational displacement with respect to the housing, the turret top plate including a drive shaft extending into the housing and through the top plate, the turret top plate including means for mounting live tooling, the drive shaft including means for engaging and driving the live tooling when mounted on the top plate, supporting means in the housing supporting the top plate including the drive shaft, the supporting means being movably mounted in the housing for axial and rotational displacement simultaneously with the top plate, indexing means associated with the housing for moving the top plate and the supporting means axially and rotationally with respect to the housing, and drive means associated with the drive shaft for permitting the drive shaft to be driven independently of the indexing means and for permitting the drive shaft to be driven simultaneously with the indexing mean

Abstract: A quick release tool holder system for machine tools utilizing a plurality of rotatable tool spindles spaced about an axis located on a tool head. Each tool spindle utilizes an axially movable sleeve for operating a detent locking a standard tool adapter within the spindle socket, and an actuator plate reciprocable by an expansible chamber motor simultaneously displaces the spindle sleeves in a tool adapter releasing direction to facilitate tool replacement.

Abstract: A machine tool for processing workpieces of various shapes comprises three processing units each mounted on a carriage to move in three axes of coordinates and each being rotatable about a horizontal axis. Each processing unit carries a tool holder having tools and being turnable in two opposite directions. A workpiece is clamped in a workpiece holder so that it is immovable during operation and can be treated at least at three sides thereof simultaneously.

Abstract: A device for rotating spindles in a wood working router includes a turret head rotatably mounted on a column extending from a machine face having radially orientated spindle heads and rotatable spindles, cutting tools respectively mounted on the working end of each of the spindles, a turret head positioning device for moving a selected one of the cutting tools to a processing position, an electric motor mounted within the column and having a drive pulley to rotate the spindles and a transmission having a drive belt driven by the motor engageable and disengageable with the spindle in the processing position to rotate the spindle and thereby the cutting tool to perform a cutting operation on a workpiece.

Abstract: The present disclosure relates to methods and apparatus for rethreading damaged or incorrectly threaded tubular members such as tool joints, casing, and tubing for oil wells, which methods and apparatus are particularly advantageous for use with NC and CNC machines.