Abstract: This invention relates to a machine tool which can do multiple operations such as drilling and turning operations on a workpiece once the workpiece is attached onto the workhead, thereby obtaining time savings in loading the workpiece and maintaining quality in the operations. According to this invention, a workhead (4) has a spindle (16). The toolhead (5) has a spindle (42). A first indexing means (6) indexes the direction of the axis of the spindle (42). A second indexing means (8) indexes the spindle (16) in the first direction (A). A first stopping means (9) stops rotation of the spindle (16) when necessary. A second stopping means (11) stops rotation of the spindle (42) when necessary. A first driving means (7) and a second driving means j(10) rotate, respectively, the spindle (16) and the spindle (42). Driving systems (12, 13) are designed to move the workhead (4) and the toolhead (5) relative to each other in a three dimensional manner.

Abstract: The convertible bar-puller provides a convertible tool for automatic lathes. This tool has two main parts; a housing head and a shank. The housing head is attached to the shank using an adjustable connection means allowing the housing head to be positioned vertically with respect to the shank. The shank includes flat sides and radius corners to be received in either an internal tool housing or an external tool housing on the turret of the lathe. Positioning of the head on the shank in a first position fixed with the shank even with the upper end of the housing head adapts the tool for an external tool housing while fixing the head in the middle of the shank adapts the tool for an internal tool housing. Jaws for engaging the object to be machined extend forwardly from the head and have an adjustable jaw opening. The jaws each comprise a finger portion and an end portion, the end portion received in a circular groove on a jaw setting screw internal to the head.

Abstract: This invention relates to a machine tool having a table for mounting a workpiece. The body of a machine tool is equipped with a table for mounting a workpiece. The table is further equipped with a rotary table. When performing turning operations of the workpiece, the workpiece is mounted on the rotary table. On the other hand, when performing other operations, except for the turning operation, the workpiece is mounted on the non-rotary table. In addition, if desired, the workpiece can be mounted on both the table and the rotary table for performing other operations.

Abstract: A machine tool turret, usable in a machine tool having a rotatable workpiece spindle, that includes first and second tool spindles journaled on the turret. The turret is mounted for compound movement in an x-c plane defined by an x axis perpendicular to the c axis of the work spindle. Each tool spindle may be locked against rotation or, alternatively, it may be rotated. In either case, the operative position of each tool spindle may be used in the machining of a workpiece which also may be rotating or non-rotating. The turret axis is perpendicular to the x-c plane so that as the turret is rotated the tool spindles remain in this x-c plane for a plurality of operative positions for machining. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: An apparatus for machining axially symmetrical workpiece surfaces. The apparatus includes two vises for the workpiece that is to be machined, and two headstocks, each of which has an arbor for a respective tool, with the two tools being aligned with one another. The ends of the two tools that face one another are supported against one another in such a way that the tools can be shifted axially relative to one another.

Abstract: A machine tool comprises two workpiece spindles having a spindle axis and located axially opposite to one another, at least one of the workpiece spindles being movable in an axial direction for transferring a workpiece from a clamping location to a working location, at least two tool carriages which are movable independently of one another parallel to the spindle axis and perpendicular to the spindle axis, guides arranged at opposite sides of the spindle so that tools of both the tool carriages can work both a workpiece held in one of the tool spindles and a workpiece held in the other of the tool spindles, two revolvers each arranged on a respective one of the tool carriages and provided with a plurality of tool receptacles, one of the two revolvers having a switching axis which extends perpendicular to the spindle axis, while the other of the two revolvers has a switching axis which extends parallel to the spindle axis, and the tool receptacles of the revolvers are formed so that the tools in both two revol

Abstract: A machine tool consisting of a stand for a spindle case which travels along the horizontal Z-axis and the vertical Y-axis, with at least one horizontal working spindle and a non-deformable bed with guides for workpiece bench traveling horizontally along the X-axis. To allow simultaneous milling and lathe work on several workpieces, the machine tool comprises a complete milling unit, and next to it on the machine bed, a complete lathe unit. To the side of the workpiece bench of the milling unit, an independent, rotation driven device is placed within the guides of the bed for clamping horizontally aligned workpieces, and next to it a turret head upon which turning tools are secured.

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 spindle mechanism is capable of rotating for a rotative tool and is capable of being locked for mounting a nonrotative tool. First and second curvic couplings may be forced into engagement by a large hydraulic force which concurrently unloads a combined thrust and radial bearing at the outboard end of the support. This permits the spindle, when mounting a nonrotative tool, to be rigidly supported in a nonrotative condition. A smaller hydraulic force may be utilized to move the spindle axially inwardly which disengages the first and second curvic couplings and preloads the combined thrust and radial bearing providing a properly preloaded rotational mode of support when the spindle is mounting a rotative tool. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: A lathe comprises two turrets each arranged on a compound slide system. The turrets are mounted on sides of the two compound slide systems facing each other and have indexing axes extending parallel or at a slight incline to the work spindle axis of the lathe. To reduce the danger of collisions between the two turrets and to enable the two turret bodies to be moved close together, the turret body located on the headstock side is smaller and has less stations than the other turret body with the result that the circles described by the tool cutting edges during rotation of the two turrets are smaller in the case of one turret than in the other.

Abstract: A turning machine which is used preferably for machining spatially complicated shapes. In order to achieve further machining possibilities, apart from the known adjusting possibilities and machining possibilities by means of a universal rest, the spindle head, alternatively or in addition hereto, is mounted on a machine bed in a longitudinally displaceable manner, if necessary in a transversely displaceable manner, an in a swivelable or rotatable manner.

Abstract: An inclined-bed machine-tool assembly is provided having a tool carriage movable in the y-axis and bearing detachable tools, a tool-storage magazine for tools not in use, and a tool-loading means for moving the tools to and from the storage magazine and loading them into, as well as unloading them from, the tool carriage. The machine can be operated under programmatic control.

Abstract: A machine tool includes a plurality of tool holders (4, 7, 19, 64) each holding a tool (4a, 7a, 19a, 81), a first spindle (16) having an axis for holdling each tool holder, a spindle head (15) for supporting rotatably the first spindle (16), means (17a) for rotating the first spindle (16), relative to the spindle head (15), means (18) for moving the spindle head (15) in a first direction (X) which is in parallel to the axis of the first spindle (16), means (13) for moving the spindle head (15) in a second direction (Z) which is at a right angle to the first direction (X), a chuck (22) for chucking a workpiece (W), a second spindle (21) for holding the chuck (22), the second spindle (21) extending at a right angle to the first spindle (16), a spindle support (20) for supporting rotatably the second spindle (21), means (24 ) for rotating the second spindle (21) together with the chuck (22), means (25) for indexing the second spindle (21) together with the chuck (22), and means (3) for locking the first spindle

Abstract: An apparatus for use in machining a workpiece includes a housing (102) which is operable between a closed condition enclosing a chuck (101) and an open condition. When the housing (102) is in the open condition, an opening (117) extends across the top of the housing and down opposite sides of the housing to provide access to the chuck (101) from both sides of the housing. A workpiece transfer assembly (200) has a downwardly extending structure (204) which is movable along a path (A) extending through the housing (102) when the housing is in the open condition. This enables the transfer structure (200) to move unfinished workpieces (W) to the chuck (101) from one side of the housing and to move finished workpieces from the chuck to the opposite side of the housing. The transfer structure is supported on tracks (201) which extend above the housing.

Abstract: An electric motor can drive a workpiece and a tool simultaneously at speeds in a ratio adjustable at will. The workpiece is driven via two pulleys and a belt, while the tool is driven via further pulleys and a belt from a hydraulic circuit comprising a pump coupled to the electric motor and a hydraulic motor. The pump is preferably of the variable-capacity type so that its flow can be modified independently of the speed of the electric motor.

Abstract: The machine tool comprises, mounted by journals (7,7) between two strong uprights (1,2), a cradle (6) which pivots about a pivot axis and carries a plate (15) which may be driven in rotation, and a general slide (3) mounted on the uprights and supporting a saddle carrying a carriage which is vertically movable and provided with a single tool spindle (13) which is capable of receiving, from a tool changer, either milling or drilling tools, or turning or boring tools, said spindle being thus capable of being moved toward the workpiece to be machined carried by the plate. An exterior power motor (32) drives the plate (15) through a transmission extending through one of the journals of the cradle.

Abstract: A clamping ring for use in pipe joints has an inside surface which is formed with generally peripherally extending indentations for axially fixing a pipe. In order to prevent an occurrence of dangerous stress concentrations in pipes in contact with such clamping rings and to permit such rings to be manufactured economically, the clamping ring is formed on its inside surface with a multiplicity of generally peripherally extending indentations, each of which extends only along part of the periphery of said inside surface, and said indentations are offset from each other in said peripheral directions and adjoint or overlap.

Abstract: The structure comprises a rotary conventional lathe work piece holding spindle, mounted for sliding on vertical guides and a tool holding assembly mounted for sliding along two perpendicular horizontal axes. The tool holding assembly receives fixed tools and motorized auxiliary units whose rotational axis is either parallel to the axis of the spindle or perpendicular.

Abstract: A drilling attachment for use with a machine tool that rotates a workpiece in which the drilling apparatus is moved into an operative position to the workpiece by means of the machine tool slide and is rotated with the workpiece so that a drilling member associated with the rotating drilling apparatus is caused to rotate and to enter the workpiece while the same is rotating. The drive means for rotating the drill collet includes an idler gear which allows a greater work area between the rotating portion of said drill attachment and the drill collet on the drill attachment.

Abstract: The universal machine-tool for carrying machining operations comprises, mounted between two uprights, a cradle pivoting about an axis and carrying the table, susceptible of being rotatingly driven whereas a general slider enables to bring closer to the part carried by the table on one hand a milling head movable according to three axes and on the other hand a drum carrier movable according to two axes, the machine enabling to carry out milling, turning and boring operations.

Abstract: In machine tools, for selective utilization of fixed tools, or tools which are adapted to be driven and rotated, a common tool retainer is provided in the toolhead. The toolhead comprises a spur gear or similar driver, or comprises drive components for operatively engaging a rotating tool. The toolhead is adapted to be rotated about an axis which is disposed at an angle of 45.degree. with respect to the main axis and the transverse axis of the machine tool and which intersects the line of intersection of the tool carrier planes which extend parallel to the longitudinal and transverse planes. A journal arrangement for the driven tools is installed in the tool retainer itself, or in the toolhead.

Abstract: A drive mechanism for the main spindle of a rotating tool turret machine, including a drive motor driving a worm carried in an eccentric mounting, rotation of the mounting effecting movement of the worm in an arcuate path into or out of engagement with a worm wheel.

Abstract: What is proposed is a drilling attachment for use with a machine tool that rotates a workpiece in which the drilling apparatus is moved into an operative position to the workpiece by means of the machine tool slide and is rotated with the workpiece so that a drilling member associated with the rotating drilling apparatus is caused to rotate and to enter the workpiece while the same is rotating.

Abstract: This invention relates to metal cutting and more particularly to machines for manufacturing constant velocity universal joints. A construction is disclosed wherein spherical turning, milling and grinding of the races and grooves of the joint members of a universal joint are performed on common machines without removing the workpieces and the workpieces are held in common workheads. During the machining operations, relative movements between the tools and workpieces are referenced to common axes thereby duplicating the relative positions and movements between the workpieces during actual service. The inventive concept provides a means for achieving consistent product quality and is adaptable to the automated manufacturing of constant velocity universal joints.

Abstract: NC automatic turret lathe with a tool turret, in which an auxiliary spindle is rotatably mounted. In order to position this auxiliary spindle with respect to its angle of rotation, an angle of rotation sensor device which controls a drive motor for the auxiliary spindle and an activatable locking device designed in the form of a freewheel are provided for the auxiliary spindle so that it may be positioned, with respect to its angle of rotation, accurately and free from play by reversing the auxiliary spindle drive motor once the locking device has been activated.

Abstract: An automatic tool changing system and apparatus for turret type and block tool type lathes. The invention generally comprises an improved automatic indexable turret having a plurality of tool clamping units actuatable for engaging and disengaging a tool, an automatic indexable tool storage/feeder mechanism for supplying and receiving tools, and an automatic tool manipulating and transporting means disposed for operative association with said turret and said tool storage/feeder mechanism for selectively exchanging tools in response to a programmed numerical control unit or system.

Abstract: A spindle lock-up device for detachably locking a rotary spindle having a tool holder at its end to a non-rotatable support, such as the ram of a vertical boring machine, so that the spindle tool holder also may be used as a fixed tool holder for the ram, the device having a first spiroid gear member fixed to the ram, a second spiroid gear member surrounded by the first gear member and fixed to the spindle, and a third spiroid gear member surrounding said spindle and mounted for axial movement from a retracted to an extended position, the third gear member simultaneously engaging the first and second gear members when in the extended position to lock the spindle against rotation relative to the ram, the third gear member being moved to the extended position by a displaceable piston.

Abstract: A tool changing system for turning machines is disclosed wherein a tool magazine having a plurality of common-based tools carries the tools on a serpentine chain matrix. The tool holders are secured to the links of the chain. The tool storage magazine is removable from the tool changer base, and replaceable with a similar tool storage magazine. A tool interchange arm is carried on a dual slide assembly, wherein a first slide moves a pair of gripper fingers to positions between the tool holder block on the tool turret of the machine and the tool storage magazine. When changing ID tools, which are mounted to the face of a tool turret, a secondary slide is moved relative to the first slide, to provide additional onward stroke positioning, and a turn-around cylinder rotates the interchange arm housing and gripper fingers to bring the tools around to the face of the tool turret.

Abstract: An apparatus for deflashing a molded recorded disc includes a turntable support for the disc and a scissors type knife having a pair of blades pivotally mounted together with one of the blades being mounted on a support which is positioned adjacent the turntable so that a portion of the flash of the disc extends between the blades. A pneumatic cylinder has a piston rod connected to a knife support to selectively move with the support and the knife toward and away from the disc. The blades have cooperating cutting edges for cutting through the flash and one of the blades has a front end cutting surface for removing the flash when the disc is rotated by the turntable. In the operation of the apparatus the knife first removes a major portion of the flash and then the knife is moved slowly inwardly against the edge of the disc to remove additional portions of the flash until the desired diameter of the disc is reached.

Abstract: A multipurpose material working tool includes a frame on which is mounted a headstock having a spindle extending axially therefrom which is adapted to receive various rotary tools and a radial trolley adapted to move on ways toward and away from the headstock. The radial trolley is equipped with a tail stock to be used in conjunction with a face plate or headstock spur center attached to the spindle and can also be equipped with various radial tools for performing work on materials located either on the bed of the trolley or in movable radial support stands attached to the frame. The multipurpose material working tool can also include a band saw secured to the frame at a position adjacent to the work headstock and which is adapted to be driven by the same motor as that which drives the work headstock.

Abstract: Particularly compact facing head structure including a housing having an axis of rotation and adapted to be directly secured to a rotating spindle for rotation about the axis of rotation thereof and slides secured to an end face of the housing for movement transversely of the axis of rotation of the housing, which facing head extends a minimum distance beyond the mounting face of the spindle. The slides may be arcuate whereby convex or concave surfaces may be machined.One end of the actuating member may extend through the end face of the housing so that a boring tool may be secured to the end of the actuating member whereby simultaneous boring and facing operations may be accomplished with the facing head. The slides are spring biased in one direction in all positions thereof to compensate for centrifugal force, backlash and facing head wear.Structure is provided for lubrication of the facing head under predetermined pressure with the facing head rotating.

Abstract: A lathe with a number of working tools for making a setting for a gem in metallic objects such as rings or bracelets, the size of the setting being directly determined by taking the diameter of the gem to be set.

Abstract: A machining center for machining the interior of an elongate tubular workpiece includes a bed on which a rotatably indexable member is slidably mounted for movement on the bed along a first axis. Removably fastened on the indexable member in spaced parallelism are a first and second hollow bore spindles each engaging the exterior surface of a tubular workpiece whose interior is to be machined. The first spindle is rotatably driven to rotate the tubular workpiece about its axis responsive to machine tool control system commands slidably mounted on the bed for movement thereon along a path perpendicular to the path of member movement in an upright. Extending from the upright parallel to the axis of upright movement for insertion into the workpiece bore is an arm which is movable along the upright along a vertical direction. At the distal end of the arm is a right angle, high speed rotary driven cutting tool carrying spindle.

Abstract: A machine tool has a rotating head provided with a radially movable carriage. Transferrable tool holders are clamped to the carriage of the head by a releasable clamping mechanism. A plurality of tool holders are held on an indexable drum, the rotational axis of which lies perpendicular to the axis of rotation of the head. The tool holders are slidably transferred from the drum to the carriage of the head and vice versa by a changer which has a transfer rod and a mechanism for actuating the clamping mechanism.

Abstract: An improved laser-assisted machining process has special application to difficult-to-machine materials such as the titanium alloys and high temperature superalloys. A layer of material to be removed by a cutting tool is made weaker by drilling a series of holes using a pulse laser beam ahead of the cutting process so that the tool removes the rest of the weaker material with relative ease. There is a decrease of cutting forces, breakage of the chip to a manageable size, and reduced tool wear.

Abstract: The flash is removed from a freshly molded recorded disc by first bringing a knife against the edge of the disc and rotating the disc about its center to remove the major portion of the flash. A rotary cutter is then brought into contact with the edge of the rotating disc to remove the remaining portion of the flash. The rotary cutter provides the disc with a smooth edge and allows an accurate control of the diameter of the disc. The cutter is mounted on a pivotal bracket which is selectively moved toward and away from the disc by means of an air cylinder and piston which is connected to the bracket.

Abstract: An automatic turret lathe in which sequences are manually programmed for automatic control (both turret and cross slide) as an incident to setting up the machine, requiring neither tape nor card programs but rather the manual effort of the machinist; the lathe also incorporates a unique clutch and bearing support for the rotary turret, and the turret has a positive lock for accurately holding the index position; all essential functions and modes including feed rates and r.p.m. are visually displayed.

Abstract: Particularly compact facing head structure including a housing having an axis of rotation and adapted to be directly secured to a rotating spindle for rotation about the axis of rotation thereof, slides secured to an end face of the housing for movement transversely of the axis of rotation of the housing, an actuating member positioned within the housing for movement axially thereof having external helical cam teeth thereon, an axially fixed cam member positioned between the housing and actuating member for rotation relative thereto having internal helical cam teeth engaged with the helical cam teeth on the actuating member whereby on axial movement of the actuating member relative to the housing the cam member is rotated angularly with respect thereto, and slot and pin mechanisms operable between the slides and cam member for moving the slides transversely of the axis of rotation of the housing on rotation of the cam member, which facing head extends a minimum distance beyond the mounting face of the spindle

Abstract: An automatic turret lathe has a main and a supplementary tool-carrying turret both being jointly movable in longitudinal and transverse directions with the turrets being indexable about an indexing axis. The supplementary turret is of smaller diameter than the main turret. Turning tools can be placed in the turrets so that a tool in one turret forms a pair with a tool in the other turret, and the turrets arranged so that both inside and outside machining of a workpiece can be carried out simultaneously. Tools can be placed in the carriers in the turrets to carry out a particular desired function. The supplementary turret can be removed for machining shafts. The turrets can be moved towards and away from as well as along the lathe axis.

Abstract: A machine tool having a boring bar carrying cutting tools and mounted for rotative adjustment on a rotary driven spindle with its axis offset from the axis of the spindle. An additional cutting tool is mounted for radial adjustment on the spindle individually of the boring bar. The tools on the boring bar and the cutting tool on the spindle are adjusted radially by means of a helically splined nut engaged with a similarly splined shaft which is rotated relative to the spindle in response to axial displacement of the shaft.

Abstract: A multiple spindle automatic screw machine wherein in order to work small-diameter and relatively lengthy rods with high accuracy, the rods to be worked are supported by guide bushes incorporated integral with working tools into tool brackets in a working position with a tooling column held close to a spindle column, the tooling column being provided with a working tool drive mechanism for allowing the working tools to effect their working operation, the working tools each being provided with a working tool adjusting mechanism.

Abstract: A machine tool comprises a table mounted on a bed and adapted to be moved in the direction of longitudinal axis of the bed, said table being arranged to be driven or rotated, intermittently indexed and controlled of the turning position thereof; vertical columns installed in a plane extending at right angles to the bed and having vertically sliding rails or vertical slides; a cross rail mounted on said vertical slides so as to be slidably moved in the vertical direction; a saddle mounted on said cross rail so as to be slidably moved in the horizontal direction; said saddle being arranged to slidably move the ram means in a direction at right angles to said cross rail; said ram means having a lower end face on which a turning tool can be fixedly mounted; said ram means having in the front face or the side of the lower end thereof a turret head adapted to be rotated and indexed in a plane extending at right angles to said table face, said turret head having a main spindle which is adapted to be rotated or drive

Abstract: A compound lathe in which a headstock is horizontally movable along a spindle axis to provide longitudinal feeding of a workpiece mounted for rotation with the spindle and a saddle carrying a turret is vertically movable to provide transverse feeding. The saddle is slidably disposed on vertical guideways which is formed on a column mounted on a bed at the back of the headstock rearwardly of cutting areas of the workpiece and which vertically extends in a plane parallel to the axis of the spindle. The turret supports tools for turning, milling, drilling and other operations. Numerically controlled servo motors preferably position the headstock and saddle. A secondary workpiece gripping means is provided to grip the end of the workpiece opposite the headstock and is releasably connected to the headstock for movement therewith. The gripping means allows accurate secondary machining of the cut-off portion of a parted workpiece by the tools on the turret.

Abstract: A turret toolpost preferably for numerically controlled automatic lathes includes two relatively adjustable turrets for the cutting tools, one turret being disposed outside the other turret. The axes of these two turrets make a small angle with one another.

Abstract: A lathe on which the tool post is swiveled and indexed about a vertical axis and the workpiece is machined with a turning or rotary tool. The headstock is slidable upward and downward, and the work portions off the axis of the spindle can also be machined with the rotary tool. Once the workpiece is set in position, it can be subjected to a variety of machining operations on a number of surfaces.

Abstract: A lathe head (work rotating device) and lathe tail stock (when required) are mounted on the table of a conventional numeric control milling machine. A tool holder and support are secured fixedly to a part of the stationary bed of the milling machine. The part to be machined is clamped in the lathe chuck and rotated by the lathe head. The mill table is programmed to move the work piece relative to the stationary tool in the required directions for machining.

Abstract: Turret-carried tools on a lathe having an automatically indexable and translatable turret are powered and controlled through coupling devices which are selectively engaged by mating coupling devices extended and retracted from a power coupling assembly translatable with the turret.

Abstract: Tools on a lathe having an automatically indexable and translatable turret are powered and controlled by automatically driving the turret to one or more predetermined positions to automatically couple or uncouple one or more detachable power coupling devices which connect power and/or control signals to turret-carried tools while the turret is translated to perform machining operations. Means are shown for effecting flexible mechanical, hydraulic, electrical and/or pneumatic power and control signals to turret-carried devices.

Abstract: A machine tool comprises a table mounted on a bed and adapted to be moved in the direction of longitudinal axis of the bed, said table being arranged to be driven or rotated, intermittently indexed and controlled of the turning position thereof; vertical columns installed in a plane extending at right angles to the bed and having vertically sliding rails or vertical slides; a cross rail mounted on said vertical slides so as to be slidably moved in the vertical direction; a saddle mounted on said cross rail so as to be slidably moved in the horizontal direction; said saddle being arranged to slidably move the ram means in a direction at right angles to said cross rail; said ram means having a lower end face on which a turning tool can be fixedly mounted; said ram means having in the front face or the side of the lower end thereof a turret head adapted to be rotated and indexed in a plane extending at right angles to said table face, said turret head having a main spindle which is adapted to be rotated or drive

Abstract: A drilling machine comprises a ram movable up and down on a carriage slidably mounted on a horizontal crossrail. A toolhead is mounted on the bottom end of the ram for pivotal movement about a horizontal axis at right angles with the crossrail and is pivoted to a desired angular position by a first drive shaft within the ram via bevel gearing. Rotatably mounted in the toolhead for rotation about an axis lying in a vertical plane is a toolholder which rigidly supports a drill and which is driven from a second drive shaft within the ram via bevel gearings. Preferably, the machine further comprises a rack-and-pinion mechanism driven from the second drive shaft for securely but releasably locking a turning tool at the bottom end of the ram, so that the machine can be used also for turning operation as a workpiece is rotated on a turntable. This turntable is of course held stationary during drilling operation.