Abstract: A vertical milling and turning machine generally comprises a spindle assembly connected to a drive motor. The spindle assembly comprises a hollow ram provided with a tapered opening at the front end thereof for attaching a turning tool and a hollow spindle provided with a tapered opening coaxial with the former opening at the front end of the spindle and the tapered opening of the spindle has a diameter smaller than that of the later opening. An air supply passage is formed in the ram so as to have an end opening opened towards the tapered opening of the ram and a detecting switch for detecting a pressure in the passage is connected to the air supply passage.

Abstract: A method of forming a cavity of a desired three-dimensional contour in a workpiece utilizes two steps of machining operation. In the first step (a), a multiplicity of holes are mechanically drilled in the workpiece substantially all over but within a three-dimensional region which is destined to constitute the cavity and which is bounded by a programmed outline corresponding to the desired three-dimensional contour whereby only a minimum of stock is left unmachined in the workpiece within the region.

Abstract: A machine for guiding numerically controlled supports for tools used for various woodworking operations, such as boring, milling and the like, for improving the relationship between the time for positioning the workpiece and for processing the workpiece includes a base on which frame supports mount guidance supports. Tool support guides are mounted on the guidance supports for movement in two directions extending perpendicularly of one another. Conveying members including retaining members extend along the guidance supports for moving workpieces through the machine. Tool support guides are located on the guidance supports for displacement in the two different directions of movement. Upper and lower tool supports are positioned on the tool support guides along with gripping members. Using this combination of components, the speed of movement of the workpiece can be synchronized with the processing time for the workpiece.

Abstract: Apparatus for simultaneously changing all of the tools in a multiple spindle machining center is provided with a number of tool carrying devices, each device corresponding to a different one of the spindles. Each tool carrying device is capable of selectively engaging each of a number of tools which are dedicated for use with one of the spindles, and is further capable of carrying engaged tools between one of the spindles and one of a plurality of tool storage magazines. A first linear translation device moves each of the tool carrying devices in parallel relationship with a first axis when the tool carrying devices are carrying tools between the spindles and the magazines, and a second linear translation device moves the tool carrying devices in parallel relationship with a second axis during such tool carrying operations, the first and second axes being in orthogonal relationship.

Abstract: An arrangement in a revolving press for withdrawing or inserting a tool holder carrying a punch from and into an opening in a turntable of the press when the tool holder turns with the turntable to an exchange position. The tool holder is in the exchange position temporarily held by a slide engaging a tool holder head projecting upwardly from the tool holder. A guide member substantially aligned with the axis of the tool holder in the exchange position carries at its lower end a gripping claw in such a manner that when the guide member is lowered while the slide is withdrawn, the claw will engage the tool holder head. Thereafter the guide member is raised, moving the tool holder out of the opening in the turntable and finally the tool holder is manually removed from the guide member so that a new punch can be mounted thereon, whereafter the tool holder is moved in reverse direction back into the opening of the turntable.

Abstract: The specification is directed to a method of operating a machine tool which enables a machining center, a transfer line or a flexible manufacturing system to be rapidly converted from the manufacture of one work piece to the manufacture of another workpiece. This is achieved by mounting all the tools associated with one series of machining steps on a common carrier unit and adapting the carrier unit so that it can be placed quickly in position on the machine tool and automatically centered in a variety of positions so that each of the individual tools can be brought into a desired machining relationship with the workpiece. The tools can comprise both stationary and driven tools and the machine tool is adapted to allow relative movement between the workpiece and the individual tools so as to carry out the desired machining steps.

Abstract: An apparatus for driving an index table which includes a first shaft, an index table rotatably mounted on the first shaft having grooves therein forming a Geneva gear and a mechanism for driving the table in rotation including a drive motor, a second shaft driven by the motor, a crank mounted on the second shaft, and a Geneva pin mounted on the crank. The grooves have force bearing walls which include straight portions and sector portions. The Geneva pin is engaged in the grooves in the table to effect stepwise rotation of the table to equispaced, predetermined angular positions. The second shaft and the grooves are spaced from each other such that the distance from the axis of the second shaft to the circumferential surface of the pin is less than the distance from the axis of the shaft to the straight portions of the force bearing walls of the grooves.

Abstract: A machining center for at least one of a drilling or milling operation. The machining center includes a machine frame at which an outrigger is attached, with a tool spindle, driveable to execute stroke movements and rotary movements, being mounted to the outrigger. The tool spindle is adapted to be moved from an end position, in alignment with a tool carrier present in the tool magazine and connectible to the tool spindle, axially for being coupled to the tool carrier and then further movable axially for machining of workpieces. The tool spindle is rotatably mounted at a slide arranged at the outrigger and guided along a straight guide extending in parallel to an axis of rotation of the tool spindle. The slide serves for axial movement of the tool spindle for executing axial strokes intended for workpiece machining and for an exchange of a tool carrier. The slide has a zone through which the tool spindle extends, which zone may pass through a gap of the tool magazine.

Abstract: Tool with automatic exchange of different working fixtures on a main holder of a machine tool, particularly adapted for digitally controlled coordinate machine tools, where the exchange, selection, and clamping of a required working fixture, stored in a storage container of working fixtures, proceeds automatically according to a prior determined program without manual attention by an attendant.

Abstract: Apparatus for reworking the valve guides of a cylinder head is disclosed. The apparatus includes an adjustable cylinder head holder including a base, a pedestal and a head support subassembly permitting positioning of the head rotationally about its longitudinal axis as well as pivotally about a transverse axis. A pair of such cylinder head supports are supported on an elongated member for transverse adjustable movement. The elongated member is supported on a bed plate beneath the spindle of a drill press. Valve guide reworking tools secured to the spindle by a U-joint are aligned with and guided through the valve guides by a valve guide boring fixture securable to the cylinder head.

Abstract: Apparatus for reworking the valve guides of a cylinder head is disclosed. The apparatus includes an adjustable cylinder head holder including a base, a pedestal and a heat support subassembly permitting positioning of the head rotationally about its longitudinal axis as well as pivotally about a transverse axis. A pair of such cylinder head supports are supported on an elongated member for transverse adjustable movement. The elongated member is supported on a bed plate beneath the spindle of a drill press. Valve guide reworking tools secured to the spindle by a U-joint are aligned with and guided through the valve guides by a valve guide boring fixture securable to the cylinder head.

Abstract: Pressurized hydraulic fluid for energizing the collet unclamping mechanism of a machining center is supplied through a first solenoid valve from an accumulator which is charged by a piston pump. The piston pump is attached to the machining center between the Z axis slide and the Z bed so that as the Z axis slide is moved to a home position at the outset of a tool change cycle, the pump charges the accumulator, allowing pressurized hydraulic fluid to be admitted into the collet unclamping cylinder through the solenoid control valve in response to machining center control system commands. Following pressurization of the unclamping mechanism from the accumulator, both the unclamping mechanism and the piston pump drain to the oil sump to reduce any drag on the Z axis slide or on the unclamping mechanism itself.

Abstract: A headstock for a universal milling and drilling machine. The headstock includes a horizontal spindle within the headstock housing. A swivel head to which a vertical milling head is mounted is rotatably mounted at a 45.degree. angle on the headstock and is lockable in position by a locking mechanism.

Abstract: A system comprising a plurality of complementary numerically controlled machine tools in which different workpieces are each subjected to appropriate selected machining operations on selected machine tools in a selected order by appropriate delivery of common form pallets loaded with the workpieces. Transporters deliver pallets between the machine tools, a storage rack, and work-setting stations where workpieces, automatically delivered in bins from a bin store, are loaded on pallets. Tool magazines are delivered between a rack and the machine tools by transporter. Transport and machining operations are computer controlled, and monitors feed back signals indicative of location of pallets, tool magazines, and bins in the system.

Abstract: A vertical spindle numerically controlled machining center includes a stationary bed or base on which a workpiece holding table is slidably mounted for movement along a first axis. A vertically extending upright or column, having a vertically reciprocal spindlehead slidably mounted thereon, is slidably mounted on the bed for movement along a second axis perpendicular to the first axis so that the spindlehead overlies a portion of the table. Within the upright is a recess adjacent to the bed. A tool storage magazine is located in the recess and is slidably mounted on the bed for movement through the recess along an axis parallel to the second axis. During a tool change cycle, the toolholder then held in the spindle is returned to the tool storage magazine by first moving the spindlehead to the ready position and then moving the tool storage drum toward the spindlehead to engage the tool then held in the spindle.

Abstract: A vertical-type machining center having a spindle carrier which travels in the vertical direction and a turret capable of both rotation and upward and downward movement provided on the spindle carrier, wherein tools are automatically changed over through rotation of the turret caused by relative movement between the turret and the spindle carrier when the upward movement of the turret is checked by a restraining member. A Z-axis position pulse generator is provided on a spindle mechanism drive member, such as the vertical drive motor or a screw shaft, and is adapted to generate a pulse for each revolution of the drive member. The pulses are counted by a counter which delivers a counted value for use in computing the vertical position of the spindle mechanism. The arrangement is such that the rotational speed of the vertical drive motor is controlled so as to move the spindle mechanism at an optimum speed suitable for the vertical position thereof.

Abstract: An arrangement for removing excess material from an object surface, to provide a desired finished surface. Holes are drilled into the object so that the bottoms of the holes lie on the desired finished surface. The holes have a shape so that the observed hole diameter at the prevailing surface of the object is dependent on the hole depth and thereby dependent on the amount of material remaining to be removed between the prevailing surface and the desired finished surface. The prevailing surface is continuously observed and measured, and the depths of material to be removed in a sequence of steps is calculated dependent on the measurements of the prevailing surface and the coordinates of the desired finished surface. As a result of the calculations, the depth of material removed during each step is controlled, so that upon carrying out a sequence of such steps, the surface exposed on the object after the last step has been carried out, coincides with the desired finished surface.

Abstract: A multi-purpose power tool in which a power head and a power carriage are mounted for reciprocal translation on a pair of elongated tubular ways, the ways being pivotally mounted and counterbalanced with respect to a generally horizontal base or stand such that the power head and carriage may be moved independently in a horizontal plane or, alternatively, in a vertical plane. The power head and carriage assemblies may be moved in a precise manner relative to the ways, either manually or by means of a variable speed motor drive. Included within the power head is an arbor assembly which passes through a quill member, the arbor also being driven by a variable speed motor. The quill assembly is provided with means for moving same outwardly from the power head to a desired extent and for subsequently locking it in that position. The carriage assembly includes means for supporting and accurately positioning a work holding table.

Abstract: A system for finishing the cylindrical interior of a workpiece on a single machine is disclosed. The workpiece is mounted to allow access to its cylindrical interior from each end. A skiving tool is advanced into and through the cylindrical interior of the workpiece from one end to machine the cylindrical interior. As the skiving tool is operating, cutting oil is introduced into the cylindrical interior of the workpiece to entrain the chips generated by the skiving tool and flush the chips out through the second end of the workpiece. The cutting oil and entrained chips are deflected at the second end of the workpiece into a collector during operation of the skiving tool. The deflector is moveable to expose the second end of the workpiece when operation of the skiving tool is completed. A honing tool is advanced into and through the cylindrical interior of the workpiece from the second end thereof after the deflector has been moved and skiving completed.

Abstract: A machining center having a magazine for storing toolholders with tools mounted therein. The magazine includes a plurality of laterally open toolholder sockets for receiving one toolholder each with its axis parallel to the tool spindle axis of the machining center. Each toolholder socket on the magazine includes a locking member enabling the toolholder to be locked in its inserted position in the magazine thereby preventing accidental withdrawal of the toolholder during rotatable movement of the magazine. Each toolholder socket on the magazine includes flange members which engage the grooves on each toolholder thereby holding each toolholder in alignment enabling the correct position of each toolholder during transfer from the magazine to the spindle of the machining center.

Abstract: An apparatus is disclosed for forming bores in articles, such as lumber studs which includes a conveyor operable for transporting the studs to a work station. Disposed adjacent the work station is a charging mechanism operable for isolating a predetermined course of the studs from the conveyor at the work station and maintaining the course substantially stationary. Drill sets are mounted on the charger and beneath the course and are operable for selectively shifting vertically upwardly for drilling bores in the course. The charger includes a carriage assembly which is disposed beneath the conveyor selectively operable for reciprocal vertical shifting to lift the course from the conveyor and return the course thereto. The drills are rigidly mounted on the carriage assembly and are moveable therewith. Additionally, the carriage assembly is provided with a lift element which is mounted thereon by means of a resilient mounting.

Abstract: An arrangement for removing excess material from an object surface, to provide a desired finished surface. Holes are drilled into the object so that the bottoms of the holes lie on the desired finished surface. The holes have a shape so that the observed hole diameter at the prevailing surface of the object is dependent on the hole depth and thereby dependent on the amount of material remaining to be removed between the prevailing surface and the desired finished surface. The prevailing surface is continuously observed and measured, and the depths of material to be removed in a sequence of steps is calculated dependent on the measurements of the prevailing surface and the coordinates of the desired finished surface. As a result of the calculations, the depth of material removed during each step is controlled, so that upon carrying out a sequence of such steps, the surface exposed on the object after the last step has been carried out, coincides with the desired finished surface.

Abstract: The disclosure relates to a tool storage carousel assembly for use in a tool change system of a vertical lathe or the like. The tool storage carousel assembly generally comprises a rotatable turntable having a plurality of radially projecting tool block supporting elements. Each of the tool blocks to be stored in the carousel assembly is provided with a top surface having an upwardly opening, clamping slot extending completely across the top surface. Each of the projecting tool block supporting elements of the rotatable turntable is arranged and configured for slidable reception in the clamping slot of one of the tool blocks to be stored in the carousel assembly whereby the particular tool block is supported by the tool block supporting element for storage on the carousel assembly. In accordance with an important feature of the invention, each of the radially projecting elements of the rotatable turntable includes a recess means formed therein.

Abstract: A production-line robot comprising an operative arm provided at its outer, pivoted end with a support mechanism is coupled via the latter to one of a plurality of tools associated with the robot, the tools being supported in their inoperative position by lock plates or bolts operable by the tool holder of the robot arm. The lock plates may comprise a tool receiving support provided with centering members with which a tool bearing plate is adapted to co-operate in the inoperative tool position, the bearing plate and the end support of the robot comprising mutual centering mechanisms, at least one of them being provided with controlled coupling and uncoupling members so that the robot can pick up and become coupled with one tool automatically and, after using this tool, deposit same upon the corresponding receiving support for subsequently picking up and becoming coupled with another tool waiting on its relevant receiving support.

Abstract: A machine tool having an automatic tool changing device wherein a tool magazine storing many tools is rotatably carried by, and movable with, a spindle head, and a desired tool among them can be automatically selected for being set in a spindle. Each tool is respectively held in a proper tool carrying arm swingably supported by the rotary disc which is indexed by an indexing device to be rotated to bring the selected tool to a corresponding position to the spindle. The selected tool is directly set in the spindle, while being held in the tool carrying arm, in accordance with a swing movement of the tool carrying arm from a first position to a second position. The tool carrying arm, which keeps holding the tool in such a manner as to be rotatable with the spindle while machining, can be restored to the first position by a return swing back to the magazine together with the operation finished tool.

Abstract: Apparatus for changing tools for a machine tool which selectively moves a tool along a Z axis with respect to a workpiece support table. The machine tool has a fixed position tool magazine which supports a tool having its principle axis parallel to a magazine axis. A tool carriage and associated tool gripper are selectively operable to move a tool between the tool magazine and the tool holder of the machine tool. A mechanical linkage maintains the tool axis to be parallel to the Z axis when the carriage is adjacent to the tool holder, and to be parallel to the magazine axis when the carriage is adjacent to the magazine.

Abstract: In a machine for cutting grooves of a given pattern through a blank with a fret saw blade, openings for receiving the fret saw blade at the cutting starting points of the grooves are determined such that the center of each opening is positioned at a point spaced from a cutting start point by a distance equal to one half of the width of the fret saw blade in a direction opposite to the direction of cutting the groove.

Abstract: A machine tool comprises a main support with a machine stand on the main support carrying a headstock alongside a workbench which is mounted advantageously for movement toward and away from the headstock. The construction includes a tool magazine support mounted on the main support and the tool magazine and the headstock are mounted for relative movement in two distinct planes. In addition, the tool magazine carries a rotatable tool magazine disk having a plurality of recesses in its periphery each of which accommodates a tool carrier. The tool magazine disk is supported by the rotation in a third plane distinct from the first and second planes, and cam means are provided between the tool carrier and the tool magazine disk which are effective to lock the carrier to the disk and/or to the headstock in accordance with whether the tool carrier with the tool is to be inserted on the headstock or to be stored in the tool carrier disk.

Abstract: There is disclosed a method and apparatus for the simultaneous machining of a stack of plate-like workpieces wherein the individual workpieces of the stack are initially assembled into a stack which is held in a manner which will not interfere with the subsequent machining operations by use of rivets or the like. The plate-like workpieces are mounted in the stack upon a support plate, and the machining operations are preferably so conducted as to penetrate through the lowermost member of the stack and into the upper portion of the support plate. The machine tool is preferably one in which a series of stations for drilling, riveting, machining and then drilling out the rivets is provided. The tool may include means for automatically and precisely moving the stack between the several work stations.

Abstract: An automatic tool changing device comprises the head of a machining center and a drum vertically movably mounted on the outer end of the head, and rotatably arranged around a center shaft which is projected from the central portion of the drum to slant downwardly are a large number of arms each having an arbor holding portion at the forward end and formed in a predetermined position on the central back surface with an elongated groove adapted for engagement with a geneva drive pin, whereby when one of the arms is engaged with a main shaft or spindle in the head, the remaining arms are continuously arranged on each side of the engaged arm above a position spaced by a predetermined angle therefrom.

Abstract: A system comprising a plurality of complementary numerically controlled machine tools in which different workpieces are each subjected to appropriate selected machining operations on selected machine tools in a selected order by appropriate delivery of common form pallets loaded with the workpieces. Transporters deliver pallets between the machine tools, a storage rack, and work-setting stations where workpieces, automatically delivered in bins from a bin store, are loaded on pallets. Tool magazines are delivered between a rack and the machine tools by transporter. Transport and machining operations are computer controlled, and monitors feed back signals indicative of location of pallets, tool magazines, and bins in the system.

Abstract: In accordance with this invention a wood working machine is provided which facilitates the sequential working of opposite sides of a wooden work piece to form a flange for a cable reel. The work piece is grippingly held against a work piece support while the support moves downwardly to permit working on one side of the work piece with a first set of working elements and then moves upwardly to permit working on the other side of the work piece by a second set of wood working elements after which the support returns to its initial position and the work piece is released for removal from the apparatus.

Abstract: Support apparatus for a movable tool head drive for a machine tool comprising a stand on which is fixed, a table on which is slidably movable, a framework comprising an upper transverse member which supports a movable tool head. The framework is in the form of a closed vertical frame having spaced vertical posts and a lower transverse member mounted below the table, the vertical posts being joined by the upper and lower transverse members to provide the closed configuration of the frame.

Abstract: A positioning device for positioning a part, such as, a movable part of a machine tool, relative to a fixed part of the machine tool, comprises, a transmitter adapted to be secured to one of said fixed and movable parts and having spaced apart first and second transmitter surfaces and a differential transmitter adapted to be secured to the other of the first and second parts and having first and second heads adapted to be positioned in alignment with the respective first and second transmitter surfaces, so that the heads produce a control signal in accordance with the amount of the heads aligned with the surfaces. Control means are connected to the respective heads and to means for moving a machine part to position the machine part in accordance with the coverages of the heads on the first and second surfaces.

Abstract: A replaceable gang head machine tool unit having a driving motor, the unit being mounted on a slide table arranged to be driven and advance in a given direction wherein: there is provided an annular rail comprising a rear stationary rail and a front movable rail disposed on a machine base, a plurality of gang heads disposed around the annular rail and supported thereon, the plurality of gang heads being arranged to be rotated on the annular rail by an index table to permit any desired gang head to be selected therefrom on the movable rail. When the working unit is in a retreated position in the machine base, the selected head on the movable rail may be joined to the unit for travel therewith together with the movable rail.

Abstract: Drilling through a wall of a molten material containing vessel, such as a glass melting tank, for the purpose of inserting an electrode or the like, is facilitated by employing a drill rig in which the drill bit is carried on the end of the electrode, which in turn is mounted on reciprocating means. The reciprocating means preferably includes a fast-travel mechanism and a high-powered hydraulic cylinder acting in tandem.

Abstract: There is disclosed herein an improved tool holder/adapter for use in a mechanical and automatic machine tool. The machine tool includes: (1) a drive spindle; and (2) a rotary turret for releasably storing a plurality of tool holder/adapters. Each holder/adapter is secured to the turret by a set of radially movable locking pins which are cammed to a radially outward position. There is also provided a set of axially movable travel limit stop pins for cooperation in maintaining the locking pins in a radially outward position. The travel limit stop pins cooperate with the spindle for releasing the locking pins and permitting them to move radially inwardly so as to release the tool holder/adapter from the turret. The stop pin construction and location combine to provide both positive and blocking engagement between the lock pin and stop pin so as to prevent unintentional inward movement of the lock pin and possible unintentional holder/adapter-turret disengagement.

Abstract: There is disclosed herein an improved machine tool holder/adapter and drive spindle nose. The drive spindle nose is tapered and includes a circumferential locking groove. The tool holder/adapter includes a tapered central recess for receiving said spindle nose and a plurality of radially movable lock pins. Biasing means are provided for direct coaction with the lock pin means so as to urge the lock pins in an outward direction. The length of the pins, the size of the spindle nose and the diameter of the circumferential groove are selected so as to prevent the spindle nose from striking the lock pins as the spindle nose moves into the tool holder/adapter for lockingly engaging said tool holder/adapter.

Abstract: Disclosed is a machine tool which comprises a spindle head, and an automatic tool changing apparatus which comprises a tool release mechanism adapted to be operated by movement of the spindle head in the direction of axis of the spindle and a tool magazine supported in floating manner with respect to the direction of the axis of spindle. When the spindle head is axially moved away from the tool magazine with the tool in the spindle being held by the tool magazine, in order to remove the tool from the spindle the tool is released from engagement with the spindle by a release mechanism, and the tool magazine can be moved together with the spindle head until the tool has been released.

Abstract: A machine for performing cutting operations on a workpiece has a rotatable carrier with several releasable processing heads which have rotatable spindles to hold cutting tools. A carrier drive mechanism is mounted on the machine to drive the carrier until a selected one of the heads is adjacent a spindle drive at the work station. The carrier drive has a crank on a rotatable shaft and a slidable plate with a recess to engage the crank to lock the carrier drive in an accurately predetermined position. The spindle drive has a hook and sliding plate mechanism to connect the selected head to the spindle drive. A latch device for releasably holding each head to the carrier is also disclosed.

Abstract: A tool magazine is provided wherein an endless chain carrying a plurality of tool sockets is guided on a magazine frame and is indexable to present to a removal station one of the tool sockets receiving a desired tool. An operating arm mechanism carrying a push rod is pivotably supported on the magazine frame. A foot-operated lever, pivotably carried on the magazine frame, is linked with the operating arm mechanism and, when trodden, causes the push rod to push out the desired tool from the one of the tool sockets. A locking device is further provided on the magazine frame for locking the operating arm mechanism each time the same is retracted to its original angular position after pushing-out of the desired tool. Thus, the foot-operated lever is prevented from operation unless the locking device is manipulated to release the operating arm from thereby locking.

Abstract: A work preparation and ruling machine is provided for the production of semi-cylindrical rotary dies. The machine comprises a longitudinal cylinder mounted for rotation in frame and being provided with a series of equally spaced longitudinal rows of holes which are radially formed therein. An end wheel, of the same diameter as a finished die, is coaxially secured to one end of the cylinder and includes a first positioning means whereby the cylinder can be rotated by a distance equal to the distance between each two longitudinal rows of holes. A guide bar mounted above and parallel to the longitudinal axis of the cylinder is provided with a pair of carriages, one carrying drilling and cutting means for drilling holes in the die and for squaring it up and the second carriage includes a pen holding fixture to keep the pen aligned with the axis of the cylinder and includes means for measuring the horizontal dimensions of the layout.

Abstract: An improved lock assembly is utilized to hold a tool in a socket of a machine tool. The lock assembly includes a carriage which is movable toward and away from the socket along a path extending perpendicular to a central axis of the socket. A retaining member is pivotally supported on the carriage. Movement of the carriage toward the socket moves the retaining member from a disengaged position in which it is spaced apart from a tool disposed in the socket to an engaged position in which the retaining member abuts the tool and presses it firmly into the socket. As the carriage moves toward the socket, the retaining member rotates relative to the carriage from the disengaged position in which it is disposed at an oblique angle to the central axis of the socket to the engaged position in which it is more closely parallel to the central axis of the socket.

Abstract: An automatic industrial robot is provided with an autoadaptive tactile device connected to a tool for performing at least one operation upon a workpiece. The tool is carried by a working head including a toolholder, and control means for effecting relative movement between the workpiece supporting means and the working head so as to bring a tool in the toolholder into a predetermined position relative to the workpiece subject to a certain tolerance. The toolholder is connected to the working head by a coupling which can be selectively freed to allow limited shifting of the toolholder relative to the working head and clamped so as to clamp the toolholder relative to the working head.

Abstract: An automatic tool changing device includes a frusto-conically shaped tool holder holding a large number of machining tools and mounted on the forward end of the head of a machining center so as to be vertically movable and rotatable about a non-rotating shaft which is slanted downwardly, whereby by rotating the tool holder, the desired tool can be automatically and sequentially attached to the cutter head spindle of the machining center, used to machine a work and then removed so that the next tool can be attached to the cutter head spindle.

Abstract: A tool changer is adapted to be mounted on a machine tool having a spindle rotatable about a vertical axis. The tool changer includes a rail adapted to be mounted on the machine tool, a carriage mounted on the rail for movement toward and away from the spindle axis, a carousel-type tool storage magazine mounted on the carriage for movement therewith and also mounted for rotational movement about a vertical axis, a Geneva mechanism selectively operable to rotatably index the carousel, and a mechanism for selectively moving the carousel toward and away from the spindle axis. The carousel includes a plurality of hands spaced thereabout and mounted for independent vertical movement between a lowered position and a raised position. The carousel also includes a mechanism for selectively lifting any one of such hands which is aligned with the sindle. Each of the hands supports a cooperative pair of outwardly extending fingers adapted to embrace and releasably hold a tool holder therebetween.

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 machine for performing cutting operations on a workpiece has a rotatable carrier with several releasable processing heads which have rotatable spindles to hold cutting tools. A carrier drive mechanism is mounted on the machine to drive the carrier until a selected one of the heads is adjacent a spindle drive at the work station. The carrier drive has a crank on a rotatable shaft and a slidable plate with a recess to engage the crank to lock the carrier drive in an accurately predetermined position. The spindle drive has a hook and sliding plate mechanism to connect the selected head to the spindle drive. A latch device for releasably holding each head to the carrier is also disclosed.

Abstract: A tool changing arrangement for a machine tool comprises a rotary and axially movable drive spindle which coaxially carries a holding member rotatable therewith and movable in axial direction relative thereto. A tool carrier movable transversely to the holding member is provided at one end with a T-shaped slot into which a corresponding male portion on the holding member may be engaged, to couple the tool carrier to the holding member. The spindle and the tool carrier are provided at facing ends with interengaging centralizing portions which during axial movement of the holding member relative to the spindle axially align the tool carrier and the spindle.

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