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 device for controlling the locking and unlocking operations of a gear wheel-rotary disc assembly comprises a ball for circulating screw having one end thereof coupled to a rotating coupling member. The screw is in turn rotatably engaged in a fixed ring-nut, which is housed in the bed of the device, to allow the screw to be axially driven, under the control of a driving motor.With respect to prior like devices, the inventive device allows the rotary disc to be driven quicker and more accurately from a locking position to an unlocking position thereof.

Abstract: A router guide apparatus for use in forming rosette designs in a work piece includes a frame having a work surface with a wheel rotatably mounted upon the work surface. The wheel has a plurality of position stops. The frame includes an adjustable guide for holding and a tracking a router with a cutting blade. The frame includes stops for limiting movement of the router during use. The guide and stops are configured to enable the cutting blade to cut two petals of a rosette design in a single pass. The wheel is affixable into multiple angular positions relative to the guide so that multiple cuts can be made at different angular orientations relative to one another.

Abstract: A method for adjusting the position of a movable working member with respect to a stationary datum surface has steps of providing a packaging machine having at least one movable working member and a device for adjusting the position of the working member during a changeover operation, providing the device with a plurality of selectable stops connected to the stationary datum surface, the stops being of different length from each other, providing a sliding support supporting the working member whose position is to be adjusted, the sliding support being mounted on a guide located adjacent to the stationary datum surface and placing the sliding support in abutment with a selected stop to obtain a predetermined distance between the working member and the stationary datum surface and fixing the sliding support in this position until the next changeover operation.

Abstract: A bidirectional indexing turret mechanism for machine tools having a housing for mounting to a machine tool, with a spline being fixed to the housing. An indexing shaft is mounted for rotation within the housing and has a rotary turret support fixed thereto for supporting a turret having machining tools for machining a workpiece. The rotary turret support is a rotary spline having spline teeth positioned for registry with the teeth of the fixed spline. A locking spline is positioned about the indexing shaft and is movable to a locking position for locking engagement with the fixed and rotary splines and is movable to an unlocked position permitting rotation of said rotary turret support and the indexing shaft. A shaft driver having splined engagement with the indexing shaft is in positioning engagement with the locking spline and is movable linearly and rotatably by a roller driver supporting a plurality of drive rollers.

Abstract: A rotary indexing apparatus includes a base, a table rotatably supported on the base, a drive unit for rotating the table, and a clamp ring fixed to the base to surround the table. Interference fit is established between the clamp ring and the table in order to clamp the table. There is also provided a mechanism for deflecting the clamp ring in order to unclamp the table.

Abstract: A safelock system for removable gears is provided having a self-seating gear segment rotatably mounted on a helical ball spline for bi-directional axial movement with respect to the gear teeth to be locked. A relubrication structure is provided to service the interior of the ball spline. The interlocking teeth are two-dimensionally tapered from the point of initial engagement. Diverse biasing structures are employed to facilitate the axial self-seating reaction of the gear segment after initial engagement with the gear to be locked.

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: An indexing device has a first crown gear arranged on a first annular body secured to an indexing table, a second crown gear arranged on a second annular body secured to a housing, and a third crown gear arranged on an axially movable third annular body. The third crown gear can be taken out of and into engagement with the other annular crown gears by a hydraulically operable lifting and lowering device. A radial bearing supports the indexing table rotatably on the housing. The lifting device has one lifting piston which is fitted to move axially inside the housing and operates with the third crown gear. The lowering device can be hydraulically operated and has at least one hollow chamber which can be filled with fluid and is bounded on the one hand by the third crown gear. A fourth annular body engaged in an annular groove in the third annular body forms a guide for moving the third crown gear. This indexing device is compact, economical to produce, easy to fit and maintain and reliable in operation.

Abstract: There is provided a locking device for a transfer feeder which can certainly lock transfer bars at desired positions so that the transfer bars and their driving portions will never initiate motion unexpectedly. The locking device includes a plurality of engaging plates secured to a feed carrier and an equalizer bar provided in lifting/clamping mechanism and formed with a plurality of engaging holes respectively aligned in longitudinal direction with regular intervals, and a plurality of locking pins secured on a plurality of portions of a press main body in opposition to the engaging plates and movable in axial and lateral directions by means of driving devices for engagement with respective one of the engaging holes.

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 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: A tool turret has a turret housing and a hollow supporting column. A head is provided at one end of the supporting column. The other end of the supporting column is connected with the turret housing. A tool face is mounted rotatably relative to the head and is lockable with this head. The tool face has at least one recess for a tool. A torque overload protection arrangement is provided between the hollow supporting column and the head and/or between the hollow supporting column and the turret housing.

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: A securing mechanism for securing a drive shaft of a rotating tool member of a working tool against rotation includes a securing member fixedly connected to the drive shaft. The securing member has at least one engagement opening. A lock bolt for engaging the at least one engagement opening is provided. The lock bolt is axially displaceably positioned in the housing of the working tool. A spring for biasing the lock bolt into engagement with the at least one engagement opening is provided. An actuating element for displacing the lock bolt from an engaged position, in which the lock bolt engages the at least one engagement opening, into a disengaged position, in which the lock bolt is removed from the engagement opening, is provided. The actuator element is positioned adjacent to the lock bolt and has a cam member extending into the travel path of the lock bolt.

Abstract: A locking arrangement suitable for use in precision optical instruments comprising first and second mountings (56, 58) defining respective opposing first and second concave surfaces (60, 62) and a member (64) for location between the mountings and defining oppositely directed convex surfaces (66, 68) for engaging a respective concave surfaces. A clamping arrangement (72, 74) is provided and has an adjustment configuration in which the member (64) is rotatable about an axis passing through the engaging surfaces and a locking configuration in which, with the first mounting (56) fixed in position and the second mounting (58) fixed against movement along the axis, the surfaces are held in locking engagement.

Abstract: A rotary index table assembly including an annular positioning mechanism (22) that cooperates with a lift mechanism (140) to accurately position a rotary index table (14) on a base (12). The annular positioning mechanism (22) includes a base mounted crown gear (24), a table mounted crown gear (26) and a movable crown gear (28) that is moved out of engagement with the base and table mounted crown gears to permit the indexing rotation and that is thereafter moved into engagement with the base and table mounted crown gears to locate the table with respect to the base while the lift mechanism (140) supports the table on the base by the movement of the movable crown gear (28) to permit the accurate positioning.

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

Abstract: Method and system are provided for controllably driving a rotary drive of a rotary index table assembly utilizing a PLC which receives various sensor signals including a feedback signal from a resolver to generate a reference central signal which, in turn, is used by a positioning drive including an electric servomotor to drive the rotary drive. The positioning drive includes a servoamplifier and a microprocessor for generating commands for controlling the servoamplifier in response to the reference central signal. The PLC also controls a hydraulic control unit which controls the axial position of the index table relative to a base of the assembly.

Abstract: A rotary index table assembly including an annular positioning mechanism (22) that cooperates with an air bearing (30) to accurately position a rotary index table (14) on a base (12). The annular positioning mechanism (22) includes a base mounted crown gear (24), a table mounted crown gear (26) and a movable crown gear (28) that is moved out of engagement with the base and table mounted crown gears to permit the indexing rotation and that is thereafter moved into engagement with the base and table mounted crown gears to locate the table with respect to the base while the air bearing supports the table on the base to permit the accurate positioning. A rotary drive (18) of the table assembly is preferably constructed to include a double enveloping worm gear set (32) and a polygonal drive coupling (34) that are capable of transmitting relatively large torque to the table while still having a compact construction.

Abstract: A rotary index table assembly including an annular positioning mechanism (22) that cooperates with an air bearing (30) to accurately position a rotary index table (14) on a base (12). The annular positioning mechanism (22) includes a base mounted crown gear (24), a table mounted crown gear (26) and a movable crown gear (28) that is moved out of engagement with the base and table mounted crown gears to permit the indexing rotation and that is thereafter moved into engagement with the base and table mounted crown gears to locate the table with respect to the base while the air bearing supports the table on the base to permit the accurate positioning. A rotary drive (18) of the table assembly is preferably constructed to include a double enveloping worm gear set (32) and a polygonal drive coupling (34) that are capable of transmitting relatively large torque to the table while still having a compact construction.

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 tool turret includes a turret housing and a turret head rotatably mounted in and relative to the turret housing to selectable angular positions about a rotational axis. A preliminary indexing bolt secures the turret head in one of the angular positions following movement of the turret head between angular positions. A three-phase synchronous motor forms a rotary drive for the turret head and has at least first and second sets of pole pairs. The first set provides a first indexing speed. The second set has a smaller number of pole pairs then the first set and provides a second indexing speed. An interlocking member securely interlocks the turret head in any of angular positions.

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 device for rotationally indexing an indexing table by utilizing a synchronized tap function of a machine tool main spindle. The rotation and the axial feeding displacement of the main spindle are in a specific synchronized relation. When the main spindle is fed forward, it engages an input shaft of the indexing device and thrusts it to retract against a spring force. Upon arriving at a retracted position of the input shaft, the main spindle starts rotation in one direction. Because of a one-way clutch between the input shaft and the indexing table, the rotation of the input shaft imparted by the main spindle is not transmitted to the indexing table. After a predetermined angular rotation and an axial feed, the main spindle is rotated in the reverse direction to be withdrawn axially. At this time the one-way clutch operates to transmit the reverse rotation to the indexing table. The indexing device is of compact construction and ensures accurate indexing.

Abstract: A tool turret has a hydraulically slidable interlocking or clamping member in alignment with the rotary axis of the turret head for interlocking or clamping the turret head to the housing and for charging the turret head with an axially reactive force by hydraulic pressure working on the interlocking or clamping member. The axially reactive force counters the axial force exerted by the interlocking or clamping member on the turret head. A hydraulically slidable piston slides relative to the housing and exerts on the turret head in its interlocked or clamped state a force applied in the same direction as the reactive force.

Abstract: A rotating device possesses a fixed portion and a movable portion equipped with a rotary shaft, and is equipped with a rotor that can be fastened in an integrated manner to the rotary shaft via a fastening device. Said rotating device is composed of a driving device which directly rotates the rotary shaft, a fluid bearing device which reduces the friction between the fixed portion and the movable portion, a disk provided on the movable portion which is elastically deformable in the direction of thrust, a clamping device provided on the fixed portion which stops the rotation of a turntable by clamping the disk, a positioning jig which makes fine changes in the position of the rotor in the radial direction with respect to the rotary shaft, and a monitoring device which monitors the status of rotation of the rotor.

Abstract: A tool turret includes two toothed rims concentric to the rotary axis of its turret head and arranged radially adjacent to one another. One rim is immovable relative to the turret head. The other rim is immovable relative to the turret housing. The teeth of the toothed rims point toward a position-locking member arranged in an axial direction adjacent and coaxial to both of the toothed rims. The toothed rims can be held by a piston which is axially slidable to a position-locking setting, in which its teeth engage the teeth of the two toothed rims without any play. The piston is part of a pneumatic assembly. The angle formed by the sides of each tooth of the toothed rims and the position-locking member is reduced from the conventional value of 60.degree.

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: A work rotating device for use with a laser beam machine tool comprises an L-shaped frame from which a servo motor, speed reducer, and a rotatable work holder are supported in cantilever fashion by a shaft rotatable in bearings provided in a hole in the frame. The shaft has an end plate haivng a spring-loaded indexing pin engageable with any selected one of several indexing holes in an indexing plate fixed to the frame. The angle of inclination of the axis of rotation of the work is read from a scale on the end plate, by means of an indexing mark on the indexing plate. The indexing plate and end plate exert axial pressure respectively on outer and inner rings of the bearings to eliminate play.

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 rotary indexing apparatus includes a housing and an indexing member in the form of a plate mounted for rotation in the housing. Locating pins are received in apertures in the indexing plate to effectively lock the indexing plate and an affixed spindle in an indexed position. The apparatus also includes a rotary cylinder assembly including a pair of diametrically opposed rotary vanes mounted for reciprocation within a cavity formed in the housing. A partition plate divides the cavity into two separate compartments with each of the compartments divided by the rotary vane into a pair of variable volume chambers. Each of the rotary vanes also includes a piston assembly having an integral indexing pin that may be selectively extended into the apertures in the indexing plate thereby displacing the locating pins. A pressurized fluid source is provided to displace the rotary vanes through a selected angle and thereby index the indexing plate and attached spindle in the desired manner.

Abstract: An indexing mechanism includes an index output shaft connected to a table or other apparatus for rotation therewith. A pinion is operatively connected to the shaft for rotation therewith to transmit rotational force to the table or apparatus. The pinion is rotated to a preset angular position by first and second drive gears, each of which are in engagement with the pinion. At least one motor is provided for carrying out rotation of the drive gears. One of the drive gears is rotated relative to the other gear in a predetermined direction into engagement with the pinion and rotates the pinion, if necessary, into contact with the other drive gear so that backlash is removed from the apparatus. This biasing action is a result of a phase shift carried out between the first and second drive gears such that one of the gears is rotated relative to the other drive gear. A particular phase shift apparatus adapted for use with the index table or apparatus is also disclosed.

Abstract: An indexing apparatus includes a casing, an indexing unit, a gripping unit, a dynamic unit and a driving unit. The indexing unit includes a connecting rod journalled in the casing and having a top portion extending out of the casing, an indexing disc sleeved rigidly on the connecting rod, and several circumferentially equidistant limiting devices provided along the periphery of the indexing disc. The gripping unit slides along the periphery of the indexing disc and can engage with one of the limiting devices so as to prevent the gripping unit from sliding relative to the indexing disc. The dynamic unit supplies power to the indexing unit. The driving unit transfers motion of the dynamic unit to the indexing unit so as to rotate the indexing disc. In a case where the gripping unit is engaged with one of the limiting devices, the movement of the dynamic unit disengages the gripping unit from the limiting device so as to rotate the indexing disc until the gripping unit engages with the next limiting device.

Abstract: For controlling the locking of the rotatable tool holder of a tool turret, the angular position of the tool holder is determined by a rotating transmitter. The rotating transmitter is rotated corresponding to the rotary movement of a control and synchronization device. Digital signals are produced with the aid of the rotating transmitter. Each digital signal is associated with one angular position of those which may be selected. With each of these signals, the indicator is changed in those two angular positions of the control and synchronization device for locking and unlocking of the tool holder at each of its angular positions. The indicator is changed by the rotary movement of the device in one or the other direction out of the associated angular position and into the angular position associated with the locking of the tool holder. These rotary transmission signals are used to control the locking.

Abstract: A clamping mechanism is provided to prevent movement of the rotatable stock carrier of a multiple spindle bar machine after it has rotated into position for the machining operation. The clamping mechanism comprises a controllable locking pin to engage indexing pin slots on the stock carrier, a passive pressure brake located opposite the locking pin, and a hydraulically actuated pressure brake in the same quadrant as the locking pin. The hydraulically actuated brake clamps the carrier against the passive brake, and in combination with the locking pin holds the carrier against movements caused by the forces of the machining tools. The hydraulic brake is released by a programmable controller to allow intended rotation of the carrier to a new position.

Abstract: A tool turret has a locking mechanism part which can be thrust axially relative to the turret head and a control member which is motor powered. The control member is arranged concentric to the rotary axis of the drive shaft of the turret head. The drive shaft is joined inflexibly with the turret head for driving the turret head and is coupled by a flexible clutch or joining device with the control member. A carrier or drive device couples the locking mechanism part with the turret head for concurrent rotation.

Abstract: A tool turret has a locking mechanism part axially slidable relative to the turret head with a face gear engaging face gears of the turret head and the housing in its locked position. The axial slidability of the locking mechanism part out of its locked position and the curtailibility of an opposing compression spring allows disengagement of the face gear of the locking mechanism part from at least one of the other two face gears. The force of the compression spring during the load on the turret head arising in disturbance-free operation is greater than the force working through this load on the locking mechanism part in the direction of disengagement of its face gear. In case of a collision with a stress exceeding the load capacity of the tool turret, the force of the compression spring is smaller than the collision force working through this load on the locking mechanism part in the direction of a disengagement of its face gear.

Abstract: A mechanism for angularly positioning the work spindle of a program-controlled milling and drilling machine. The positioning mechanism comprises a drive unit mounted on the spindle housing for rotating the spindle after the main drive has been shut off, and a locating member for locating the work spindle when it has reached its predetermined angular position. Angular positioning of the work spindle will effect predetermined angular positions of the horizontal and vertical spindles. In accordance with one embodiment of the invention, the drive unit comprises an electric motor the shaft of which is adapted to be selectively coupled by means of a pinion to a gear mounted on the spindle. The locating member is a spring-loaded indexing bolt having a centering cone for engagement in a bore formed in the gear. The electric motor and the indexing bolt are mounted on a pivot plate which is pivoted by an actuating drive from an upper inoperative position to a lower operative position.

Abstract: A tool turret has a locking mechanism part which can slide axially relative to the turret head. The locking mechanism part is aligned with annular gears of the turret head and of the housing. In its locked position, an annular gear on the locking mechanism part mates with the gears of the turret head and housing. An axial drive engages a control member which is rotatable relative to the locking mechanism part and has at least one curved sector. The curved sector has a shape for thrusting the locking mechanism part into its locked position by a continuation of the rotary movement of the control member relative to the locking mechanism part in the direction of the preceding rotary movement setting the new angular position of the turret head.

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: Angular regions (A, B) for turning a trunk body (12) of an industrial robot can be changed in accordance with an operation of the industrial robot by setting movable stoppers (18, 20). Turning movement can be stopped by an electrical means (LS1, LS2, LS3, LS4, LS5) to protect a drive motor and a drive mechanism, just before a stopper (22) fixed on the trunk body collides with mechanical stoppers (14, 16, 18, 20). An accident based on an error operation of the movable stoppers can be prevented by disposing proximity detectors (PS1, PS2, PS3, PS4).

Abstract: Power transmission and actuator apparatus especially advantageous in application to outdoor antennas, particularly TVRO parabolic antennas, to be operated by remote control, comprises a tub-shaped receptacle including a base having a peripherally encompassing relatively projected wall structure defining therewith a cavity, the major extent of the opening to the cavity being bridged by a releasably attached plate mounting a terminal strip adapted for connection thereto of a remote source of electrical energy, the base mounting a first integrated adapter for mounting a drive motor and a second for mounting an actuator assembly in a manner to provide for an inherent evacuation of water from each thereof during its use. The plate commonly mounts a perpendicularly related shaft and a multiplicity of control elements and the shaft has thereon a slip fit output gear in mesh with further gear means intermediate said plate and the base of the receptacle.

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.