Abstract: An assembly line fixture includes an elevator having a mounting surface, and a turntable mounted on the mounting surface and rotatable about an axis of rotation with respect to the mounting surface. Also mounted on the mounting surface are a detent mechanism, a locking mechanism, and a clamping mechanism. The detent mechanism includes a roller that is spring biased against the turntable, and that is operable to resist rotation of the turntable at preselected angular positions. The locking mechanism includes a lever, a locking member, and a biasing member. The locking member engages notches in the turntable to prevent the turntable from rotating. The lever actuates the locking member and the biasing member biases the locking member toward the notches for engagement therewith. The clamping mechanism includes at least one clamp that is adapted to engage a portion of an apparatus.

Abstract: A transfer mechanism for turret indexing and positioning system includes an output shaft configured to hold a turret and a hydraulically controlled three-piece tooth type shaft coupling arranged to brake the output shaft at a precise position of the turret. A follower is secured to the output shaft by a conic ring. A locking nut that can be rapidly and independently affixed is used to provide an optimal clearance between a rotational sleeve and a reference sleeve of a three-piece tooth type shaft coupling during the rotation of the turret.

Abstract: A chuck (25) for chucking a journal (271) of a crankshaft (27) is attached to the distal end of a main spindle (22) rotated by a drive motor. A phasing rotary shaft (53) is connected to the chuck (25) to rotate about an axis offset from the axis of the main spindle (22). The chuck (25) is provided with a coupling (63) that releasably connects the phasing rotary shaft (53) and the chuck (25). Further, a locking mechanism for locking the phasing rotary shaft (53) is provided. The coupling (63) has a pair of coupling plates (64 and 65) that can be moved closer to and farther from each other. Opposing faces of these coupling plates (64 and 65) have teeth (641 and 651), which are meshed when the coupling plates (64 and 65) are brought close to each other.

Abstract: An indexing device comprising a base table (10), a turret (11) which indexes about a given rotary center relative to the base table (10), a pair of positioning engaging members (27) provided between the base table (10) and the turret (11), wherein at least one of the positioning engaging members (27) has an inclined tooth profile, and the positioning engaging members (27) are engageable with and disengageable from each other relative to the tooth profiles when they move in axial directions thereof relative to each other. The meshing of the tooth profiles are maintained by applying a pressing force to at least one of the positioning engaging members (27). When the turret (11) receives a load, a positioning displacement which occurs between the pair of positioning engaging members (27) is detected, and the pressing force applied to the positioning engaging members (27) is adjusted based on the result of detection.

Abstract: An assembly for carrying out operations in the transfer, manufacture, or assembly of components having an open center turntable, rotatable about a vertical axis, having a number of work positions adapted for alignment with component supply, assembly, and removal. The platform is movably borne on an open center fixed base support, by means of bearings journalled between the support and the turntable proximate the work force exerted on the component at the turntable work station. The platform is rotated about the open center fixed support by means of a substantially circular drive hub attached to the platform. A drive belt, coupled to the drive pulley of a motor, located beneath the platform peripherally engages the drive hub about a circular belt raceway attached to the hub. As the drive pulley rotates, the turntable rotates through a defined set of motions by means of the drive belt arrangement.

Abstract: A drive device, for rotating a machine tool table, includes an armature, of a linear electric motor, located tangentially along the whole lateral surface of a circular table. The armature is connected by its own lateral surface to the table. An inductor, of the linear electric motor, is located substantially facing at least a part of the armature.

Abstract: A machine tool comprises a turntable that has a table plate, pivotable about a rotation axis with respect to a machine frame, onto the upper side of which lead lines, coming from beneath the table plate, that are connected to stationary supply connections. The lines are attached to the table plate from below, by means of downward-pointing connector pieces that are joined nonrotatably to the table plate in its center region, in such a way that they hang freely downward.

Abstract: A positioning device for a driving shaft of a lathe chuck includes a casing, a motor received in the casing with a driving shaft of the motor extending through a first end and a second end of the casing, and a disk disposed to the first end of the casing and threadedly mounted to the driving shaft. The disk has at least one hole defined therethrough and the first end of the casing has a plurality of holes defined therethrough so that a pin is removably extending through the hole in the disk and received in one of the holes in the first end of the casing to position the driving shaft to which the lathe chuck is connected.

Abstract: An indexing table having a mounting plate, a support plate and a base. The indexing table further has a lifting piston, locating pistons and clamps for clamping the support plate. The indexing table additionally provides a valve to carry out the specific operations.

Abstract: In the indexing mechanism, for producing rotary indexing of a primary sprocket or pulley, a locking bracket is operable to alternately lock or unlock the primary sprocket or pulley. At the same time, the locking bracket alternately unlocks or locks an endless chain or synchronous belt at a locking location. The chain or synchronous belt passes around the primary sprocket or pulley and past the chain or synchronous belt locking location. The chain or synchronous belt has first and second loops between the primary sprocket or pulley and the chain or synchronous belt locking location, on opposite sides thereof. First and second secondary sprockets or pulleys are mounted on the ends of first and second cylinder rods respectively, each secondary sprocket having one of the loops passing over it. The locking bracket is moved between two positions, to lock either the sprocket or pulley, or the chain or synchronous belt at the locking location.

Abstract: A linear motion to rotary motion converter. A moving cam carrier reciprocates with respect to a rotating turntable having a plurality of fingers, preferably roller bearings, secured to and extending from the turntable parallel to the axis of rotation of the turntable and radially spaced from the axis. The number of rollers extending from the turntable determine the number of indexed stop positions of the turntable. The cam carrier has two movable cams and also has two retaining members that are attached to the cam carrier and respectively spaced from the movable cams so as to define channels, between the respective pairs of movable cams and retaining members, through which the roller bearing fingers of the turntable are constrained to move. The curvature and shape of the channels determines the velocity profile of the turntable as the cam carrier reciprocates.

Abstract: In connection with a device for receiving workpieces, in particular for machine tools with continuous-path control, preferably numerically controlled machine tools, a dividing mechanism having a dividing spindle, which is seated in a housing, can be brought into predetermined angular positions and is connected with a workpiece holder. It is possible to achieve an exact and rapid setting of the dividing mechanism in that it is arranged for actuation by means of a continuous-path-controlled actuator, by which an indexing mechanism associated with the dividing spindle, with whose aid the dividing spindle can be locked in place in a predeterminable angular position, can be brought into a position which releases the dividing spindle, and through which the dividing spindle can be rotated.

Abstract: A rotatable tool-holder turret for lathes, work-centers and the like, comprises a stationary base body with a cavity which extends along a longitudinal axis, a tool-holder table rotatable relative to the stationary base body, an element with teeth for locking and releasing the rotatable table relative to the stationary body, a drive mechanism for moving the table between working positions spaced angularly around the longitudinal axis, as well as a compressed air operated cylinder-piston for moving the locking and release element axially. The turret includes a mechanism for amplifying the axial thrust generated by preloaded springs, the mechanism holding the locking element mechanically in the position in which the turret is locked, by a plurality of balls which are movable radially relative to the longitudinal axis of the turret and which can be inserted between and released from facing walls, including at least one conical wall of the locking element and of a wall of a second, stationary tubular element.

Abstract: A rotary indexing table has a table defining a flat table surface. A dial having an upper surface and a lower surface is positioned over and generally parallel to the table surface. The dial further defines a circular inner edge and an outer edge. First bearings mounted to the table surface engage the inner edge of the dial to radially support the dial on the table. Second bearings axially support the lower surface on the table surface for rotation. The second bearings comprise circular grooves in the lower surface of the dial and concentric with the inner edge. Ball bearings are in the grooves and in contact with the flat table surface. A drive assembly comprising a belt engaging the outer edge and driven by a motor indexes the rotation of the dial.

Abstract: A device for adjusting the position of a movable working member with respect to a stationary datum surface has a plurality of stop stems, each stem being different in length from the others. A sliding support carries the movable working member whose position is to be adjusted, and is mounted on a guide perpendicular to the datum surface. The sliding support is to be moved until it goes in abutment on a selected stem so as to take a position in which a predetermined distance is set between the movable working member and the datum surface.

Abstract: An indexing mechanism includes a first body and a second body. The first and second bodies are rotatable relative to each other about a plurality of index positions which are provided at discretely spaced angular orientations about the axis. The bodies are relatively moveable in an axle direction to facilitate disengagement from a given index position.

Abstract: An improved indexing device for generating a smooth and controlled rotary motion where double rotary cranks having slide members coupled to corresponding slide guides arranged in orientation parallel to the plane of rotation of the rotary cranks are provided. Each slide guide is attached to a trolley movable in a direction transverse to the axis of the slide guides. A linear gear rack is mounted on each trolley in parallel to its sliding motion and are opposingly configured across a rotary gear member. The gear member drives a positive locking clutch which is entirely self contained within the indexer assembly itself and requires no operator or external control. The clutch function is accomplished automatically when appropriate during the indexer cycle. During stationary periods, the output of the indexer is locked preventing movement of the indexer and providing unique stability to the device.

Abstract: A table-turning driving apparatus comprises a pair of first and second worm shafts 16 and 17 which engage a driving shaft through gears and which is rotated in the same direction of rotation as that of the driving shaft. One 16 of the worm shafts is fixed, at the end thereof directed to the driving shaft, to a gear 28 by means of a fastening and connecting member 29, 30 so that the phase thereof is adjustable relative to the gear 28, and pinions 34, 40 integral with worm wheels 33, 39 which engage worms 32, 38 of the above-mentioned worm shafts 16, 17 are connected to a ring gear 65 of the table.

Abstract: An index table utilizes oil shear brake and clutch technology in combination with a unique final positioning system in order to provide an accurate and reliable index table, the index table incorporates a two speed oil shear drive system for high speed indexing and low speed final positioning. An oil shear brake stops the table at an approximate final position at which time the final positioning system rotates and locks the index table at the correct position after each indexing of the table.

Abstract: A rotary table with an index apparatus. The index apparatus includes first and second circular coupling gears disposed on a table in coaxial relationship with the rotational axis of the rotary table. The first coupling gear is fixed to the rotary table via a circular support member made of an elastic material while the second coupling gear is fixed to the table base. A third circular coupling gear is further disposed between the first and second coupling gears and the rotary table. The third coupling gear is moved by a cylinder mechanism between a first position in which the third coupling gear is separated from the first and second coupling gears and a second position in which the third coupling gear is brought into engagement with the first and second coupling gears while the force produced by the cylinder mechanism is transmitted to the rotary table via the third gear, first gear and support member so that the periphery of the rotary table is pushed against the guide surface of the table base.

Abstract: In a turret indexing device, a coupling containing three gear members is employed in a turret indexing device to cooperate with an indexing disc mounted on an output shaft which is adapted to hold an indexing head. The coupling is operated by a first cam fixedly mounted on an input shaft through a lever mechanism, and the indexing disc is driven by a second cam fixedly mounted on the same input shaft. The three gear members include a first gear member fixedly mounted on a collar slidably mounted on the output shaft, a second gear member which is fixedly mounted on a stationary housing, and third gear member fixedly mounted on a head end of the output shaft.

Abstract: A system for calibrating a rotary table (10) includes an indexing table (20) (which is a Hirth coupling table) and an angular interferometer (100), together with a control (200). The indexing table is mechanically coupled to the rotary table (this being the only connection between the rotary table to be calibrated and the calibration system), and the interferometer is set up to measure rotation of the indexing table. During rotation of the rotary table (10) to a target angle, the control (200) monitors the interferometer reading, and when this reading exceeds a predetermined threshold, actuates a drive motor (240) of the table (20) to counter rotate the table, thereby to maintain the optics (106) of the interferometer in alignment with the laser beams (L2, L3) and thus enable continuous measurement of the position of the indexing table.

Abstract: An automatic tool change mechanism containing a cam shaft linked with a moter and a slotted cam. The cam shaft is driven by the motor to actuate the slotted cam to turn. The slotted cam is provided with a cam-profile groove, which is dimensioned so as to permit a driven roller to roll along the groove. The driven roller is caused to travel along the course of the cam-profile groove so as to cause an L-shaped rod to rock when the slotted cam is rotated by the cam shaft. The L-shaped rod is linked with a planetary gear, which engages a sector gear. The L-shaped rod contains a rocking section which actuates the planetary gear to turn. The planetary gear is connected with an output pitman, which is in turn coupled with a tool change shaft to cause the tool change shaft to engage in a linear motion. The driven roller also causes a turret, which is normal to the cam shaft, to rotate, and the rotation of the turret causes the tool change shaft to engage in a revolving motion.

Abstract: A mechanically programmed indexing turret assembly configured to independently position each of a plurality of mandrels about a central axis of the turret for periodic interaction with a plurality of work stations. A central standard rotates at a substantially constant angular velocity. Each mandrel is mounted about the axis of the standard for rotation about a common axis therewith. The standard selectively transmits torque to the various mandrels in conjunction with cam and linkage elements. The respective periods of angular acceleration, deceleration, and absolute dwell of the respective mandrels are controlled in accordance with a predetermined cam contour associated with the cam track.

Abstract: A turntable for selectively accommodating different types of workpieces in which the system is designed for combining two turntables into one for handling two different workpieces which are rotated by two different motors. Preferably, one of the motors is connected to one of the tables for rotating the table continuously at a slow speed for treating large parts. The turntable is adapted to be selectively arranged for a second motor to drive a second table at incremental positions so as to index smaller parts for treatment. One drive shaft of the two motors is located within the other drive shaft which is hollow.

Abstract: A turntable apparatus has a turntable in combination with an indexing mechanism for use in a universal machine tool. The turntable has a spindle, and a turntable driving system is provided for driving the turntable. A driving system is used for driving an indexing mechanism for separately driving the turntable, and has an indexing shaft. A first arrangement is provided for clamping the main spindle of the turntable, and a second arrangement is provided for clamping the indexing shaft of the indexing mechanism driving system.

Abstract: The tool turret comprising driven tools comprises a turret shaft (2) which carries the turret plate (4) and is supported in a turret housing (1) so as to be rotatable and axially displaceable. The turret shaft (2) can be locked at the turret plate end by a Hirth coupling. At the other end, the turret shaft (2) can be connected via a switchable coupling with a toothed wheel (23) of a gear unit (15) so as to be fixed with respect to rotation relative to it, the toothed wheel (23) being supported coaxially relative to the turret shaft (2). A switchable intermediate wheel (26), which engages with a pinion (27) of a drive shaft (28) for the tools to be driven, can engage with the coaxial toothed wheel (23). The turret shaft (2) can be displaced axially into its two end positions by a double-action piston (6), the couplings (12, 13) connected with the turret shaft (2) being alternately engaged and disengaged in the two end positions.

Abstract: An index table structure and method of indexing where the index table structure includes a table top which is angularly rotatable and has a plurality of cam members around the periphery thereof with each including radially outwardly opening cam recess having a bust locating surface for defining a precisely located indexed position of the table top, a dual motor brake structure for driving the table top between angularly separated indexed positions, a shot pin positioned adjacent the periphery of the table top and having a second locating surface adapted to mate with the first locating surface of the cam recess to locate the indexed table top in a precisely indexed position, a fluid cushion structure for providing a fluid cushion for the table top during rotation; in indexing the table top it is rotated in one direction whereby the shot pin is cam actuated into one of the cam recesses to approximately locate the table top in an indexed position and subsequently the table top is rotated in the opposite directio

Abstract: A control device comprises a clutch having two parts which are respectively coupled with an input shaft and an output shaft. The input shaft carries a torque limiter having a rotating pulley coupled with a central axle by a friction member. The rotating pulley is connected to the output shaft, and the central axis is connected to the input shaft. In case of disengagemnt of the output shaft, with the input shaft always being in rotation, a limited couple is transmitted to the part of the clutch coupled to the output shaft through the torque limiter in order to cause the part to attain a given position on abutment.

Abstract: The tool-holder turret for lathes or like machining centers has a fixed support member (1; 52) bearing a rotary member (4; 51) to which there may be attached a tool-holder plate designed to bear a plurality of tools, each of which can brought into the operating position by the rotation of the rotary member, a drive motor (12; 54) also being provided, which is connected to a geared differential transmission unit (15, 18, 20; 47, 18, 20; 57, 64, 66) having three members, the first member, called the driver (15; 47; 57), being connected to the motor and controlling, on one hand, the opening and closing of the turret and, on the other hand, the rotation of its rotary member, the second member, which can be driven in rotation, of the differential unit (18; 18; 64) being connected to the rotary member and the third member, which can be driven in rotation, of the differential unit (20; 20; 66) being connected, via interposed cam transmission means (21, 23; 71, 72), to a rotationally fixed and axially movable member

Abstract: A device for turning a monitor to a position at which a viewer can comfortably see the monitor. The device comprises a turntable carrying a monitor thereon, a cam shaft adapted to rotate the turntable in a desired direction utilizing a cylindrical cam having at an outer surface thereof an arc-shaped cam groove. The cam shaft receives a drive force from a drive motor via a reduction gear mechanism.

Abstract: In a device for indexing a work attached to a cutting device of a machine center, the device for indexing comprises an indexing plate connected to a driving shaft of an indexing table and held by a stopper on the normal position on a base, a push bar interlocking operatively with an extra action other than the normal action of a tool to move linearly relative to the base, an actuating member for rotating the indexing plate by engaging the push bar operatively. The device is so constructed to disengage a stoppage of the indexing plate by the stopper and rotate the indexing at fixed angles with the aid of the actuating member when indexing a work.

Abstract: A button press has an indexable turntable on which are mounted a plurality of alternating lower forming die asseblies and crimping die assemblies. The lower die assemblies are positioned beneath an upper die assembly as the turntable is indexed. The upper die assembly is reciprocated towards and away from the lower die assemblies to first form a cover sheet and display sheet about a metal button front and then to join that subassembly to a metal back having a pin. The indexing of the turntable and the vertical reciprocation of the upper die assembly are provided by a single electric motor. The motor drives a sprocket which is mounted on a shaft leading to a right angle drive mechanism which converts the continuous rotation of the shaft into incemental rotary motion of the turntable. A vertical linkage extends from a face of the sprocket to one end of a walking beam whose other end is connected to a ramrod that mounts the upper die assembly.

Abstract: An indexing and transporting mechanism having a plurality of work-holding spindles spaced around a carousel, the carousel being journaled on a machine frame provided with work-performing stations and being indexable to carry the spindles sequentially from station to station, the work-holding spindles being arranged to be indexed through one complete revolution at some stations and not at others by a work-holding spindle orienting and indexing mechanism which consists of a track carried by the machine frame concentric with the carousel journals, projections extending from the work-holding spindles which engage the track to prevent rotation of the work-holding spindles relative to the carousel over part of a revolution of the carousel, the track being interrupted at the stations where indexing occurs, each interrupted portion of the track being mounted on indexable spindles carried by the machine frame, each interrupted portion of the track being arranged to be indexed through one complete revolution while the

Abstract: A reloader for reloading cartridges. A reciprocating plunger carries a turret that rotates around the axis of the plunger. The turret carries a plurality of cartridges for reloading, the cartridges being symmetrically spaced around the turret axis and adapted to be indexed around the axis in a step-by-step sequence. An overhead die holder contains a plurality of dies spaced in a symmetrical pattern similar to that of the cartridges but in fixed positions. A center opening in the die holder houses a rotatable bushing. The rotation of the bushing is controlled in part by a one-way clutch. An indexing shaft affixed to the turret extends from the turret axis through the bushing. The shaft has a multi-sided cross section and is slidably fitted to the bushing in a manner that prevents relative rotation. The configured cross section has an axial twist and when forced through the bushing by the reciprocating plunger, causes turning of one or the other of the shaft and turret or the bushing.

Abstract: A rotatable offset indexable fixture is rotatable by being mounted on a work spindle. A faceplate is journaled on the fixture for rotation about an indexing axis parallel to but spaced from the workpiece spindle axis. A workpiece may be secured to the faceplate. First and second cooperable toothed coupling members are concentric with the indexing axis and one is fixed to the rotatable workpiece spindle and the other fixed to the faceplate so that they rotate together about the spindle axis when coupled together. A fluid-actuated piston is provided to relatively move the coupling members along the indexing axis to couple and uncouple the members and for independent rotation of the second coupling member when uncoupled. A first aperture may be machined in the rotating workpiece concentric with the spindle axis and then the faceplate indexed to a second position and a second aperture machined concentric with the spindle axis at a location spaced from the first aperture.

Abstract: An apparatus for a firearm ammunition hand loader. The apparatus provides for the installation of gas checks onto the base of a cast bullet, and sizing and lubricating of the bullet with the gas check on. This is achieved by use of an index table that provides, in a progressive, continuous action, the mounting of the gas check and the sizing and lubrication of the bullet with the gas check mounted thereon, with greater ease and speed than previously known single stage operating devices.

Abstract: A multi-setting revolving turret particularly useful with a lathe machining center, comprises a base body, a tool head rotatable in the base body, at least one chuck in said head for a drill bit or cutter tool, a motor supported on the base body to drive said chuck through a drive train, wherein an element of the drive train is mounted on the base body in a hide-away shiftable fashion between an operative position of engagement with the chuck and an inoperative position of disengagement from the chuck.

Abstract: A modularly expandable integrated process machine system incorporating a rotary indexing mechanism therefor. The machine system is made up of a support platform with predefined work station positions which each have the same dimension tool mounting configuration. Pallets are advanced between workstations by an endless chain incremented by a precision rotary indexing mechanism capable of precise end-of-movement positioning and variable force advancing.

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 rotating and indexing mechanism (10) having two spaced apart, rows of toothed profiles (48, 52) which form camming surfaces for two spaced apart rows (62, 64) of cam followers (32). The toothed profiles (48, 54) and cam followers (32) are such that when there is relative movement between the toothed profiles (48, 54) and the rows (62, 64) of cam followers (32) in one direction, the camming action of the cam followers and toothed profiles pause incremental rotation of a shaft (16). A groove (66) is also provided for locking the two profiles and cam followers together when the desired incremental (index) position is reached.Two embodiments are shown, one where the toothed profiles are moved axially to give rotation to the cam followers and shaft, and the other where the cam followers move axially to give rotation to the toothed profiles and the shaft.

Abstract: Apparatus for incrementally altering the position of an object. The apparatus incrementally rotatably advances a turret by sequentially displacing a plurality of plungers. Each plunger when displaced moves along a linear axis to slidably contact and move along a sloped surface on the turret to generate a lateral force which incrementally rotates the turret a desired distance.

Abstract: In accordance with the present invention, there is provided a cutting tool having a cutting tool insert which is automatically rotationally indexable. The cutting tool includes a shank and an indexable cutting tool insert rotatably connected to the shank. The insert includes a plurality of cutting edges and side surfaces therebetween. The cutting tool is also provided with an indexing device, lock pin, cam plate and eccentric cam pin. The indexing device comprises a sliding key and a pair of spring metal legs attached thereto for engaging a serrated portion of the lock pin to which the cutting tool insert is attached. The indexing device is effective for indexing the insert on the lock pin upon rotation of the cam pin which effects a lateral movement of the cam plate along the longitudinal axis of the shank whereby the cam plate engages the sliding key causing it to also move laterally to engage the indexing legs on the lock pin resulting in rotation of the lock pin and the cutting insert attached thereto.

Abstract: A new and improved indexing table for supporting a workpiece on a machine tool and the like includes a base with a workpiece supporting table carried on a support shaft journaled for rotation to index the workpiece for machine tool operations. A drive system is provided for rotating the table in one direction about a longitudinal axis of the support shaft and an indexing wheel is provided on the shaft having a plurality of index slots spaced angularly around the periphery for securing the table in selected indexing positions. A shot pin is provided for engaging selected slots in the wheel to lock the table in a fixed position and when the shot pin is retracted, the table is then permitted to rotate toward a next indexing position.

Abstract: A Portable Machining Turntable (PMT) (1) used in combination with a milling, grinding or drilling machine (101) to allow both single and compound angles to be worked. The PMT (1) is comprised of an integral housing (2) enclosing an electric stepping motor (23) that through two pulleys (22), (24) and a timing belt (27) drives a worm drive assembly (17). The worm (21) drives a worm gear (43) that rotates a rotary head (36). The power to operate the motor (23) is supplied and controlled by a conventional numerical control system. However, the PMT (1) includes a mechanical override that allows the rotary head (36) to be manually rotated. To operate the PMT (1) it is mounted to a mill bed by standard clamp blocks inserted into hold-down slots (14) located on the lower walls of the housing (2). The work piece is then attached to the rotary head (36) and the head is rotated to the desired work angle.

Abstract: A cam mechanism includes a continuous rotary shaft connected to a drive source, a cam fixed on the rotary shaft to convert each continuous rotation motion of the rotary shaft to a compound horizontal and vertical motion, and an output member coupled with the cam. The cam comprises a single piece, disc-shaped compound cam having in its upper surface an endless groove formed of continuously-arranged arcuate and non-arcuate groove portions and an endless guide the depth of which from the upper surface of the compound cam varies continuously. The output member is supported displaceably in the horizontal and vertical directions relative to the compound cam and includes at least one roller engaged with the groove and the guide of the compound cam.

Abstract: An indexing and positioning device comprises: a fixed inner ring; and outer ring disposed coaxially, coplanarly, and revolvably therearound with an annular boundary therebetween; a plurality of positioning recesses formed at equal indexing intervals along and straddling the boundary and comprising respective inner and outer parts respectively formed in the inner and outer rings, all recesses assuming a completely assembled state upon combination of the inner and respective outer parts in a specific indexing register; a plurality of positioning balls one of which is floatably accommodated within each of the positioning recesses; a retainer confining and guiding each of the positioning balls; and a clamp ring operable to press the positioning balls inward into the respective positioning recesses thereby to cause accurate and positive centering and positioning of indexing positions of the inner and outer rings relative to each other.

Abstract: A machine tool having a tool spindle rotatable about a horizontal axis provided with first and second tool magazines and first and second tool transfer devices. The first tool magazine removably stores a plurality of small diameter tools, with the axes of the small diameter tools extending horizontally. The first tool transfer device transfers the small diameter tools between the first tool magazine and the tool spindle. The second tool magazine is installed on the floor at one side of a column of the machine tool in a horizontal direction perpendicular to the tool spindle and removably stores a plurality of large diameter tools, with the axes of the large diameter tools extending vertically. The second tool magazine is provided with a turnover mechanism, which pivotally moves a large diameter tool indexed to a large tool removal position so as to lay the large diameter tool horizontally in parallel relation with the tool spindle.

Abstract: An indexable machine tool turret comprising a body having a chamber, an opened end, a closed end and a central longitudinal axis; an axially displaceable rotatable turret top plate having a number of angularly spaced apertures for holding tools, said top plate being co-axial with said body axis; an axially displaceable and extending rotatable shaft connected to said top plate, said shaft co-axial with said top plate; two opposed annular face gears for seating said top plate to said body, said gears co-axial with and concentric with said top plate, one of said gears mounted in said top plate for engaging said other gear, said other gear mounted in said body; said shaft including a ring gear mounted concentrically thereto; means for displacing said shaft and thereby said top plate for causing said face gears to engage and disengage; drive means for engaging said ring gear for rotating said shaft when said face gears are disengaged; cushioned stopping means for stopping said shaft rotation; and, angular rotation

Abstract: Stepping drive mechanism for converting a constant input rotatory movement to a linear movement of a given length accelerated first from zero, then continuing at constant velocity, and finally decelerated back to zero, in which the constant input rotatory movement introduced into the drive of the mechanism is transmitted to cylindrical driving cams having indexing grooves provided in their cylindrical circumferential surface, which are engaged by an indexing pin provided on a carrier component coupled with the drive of the mechanism. The indexing pin carrier component has the form of a circular disk mounted for rotation about its central axis, on each of whose opposite flat sides a driving cam is provided, one associated with the acceleration-deceleration phase and one with the constant-velocity linear movement phase. The cams each have an axis of rotation disposed at right angles to the central axis of the indexing pin carrier component, in whose indexing grooves an associated indexing pin engages.