Abstract: A gauge apparatus is disclosed herein that positions a jaw within a chuck at a specified radius with respect to an axis of the chuck. The gauge apparatus includes a gauge member having an elongate configuration with a guide surface against which a side of a jaw may be biased. A pin projects forth from the gauge member to receive a tip of the jaw with the side of the jaw biased against the guide surface, in various aspects, and the pin is positionable with respect to the gauge member. An outer guide assembly cooperates mechanically with the gauge member and with a side face of a chuck to orient the gauge member radially with an axis of the chuck to locate the pin radially with respect to the side face in order to position the jaw at a selected radial position with respect to the axis.

Abstract: Some examples provide a vacuum wafer chuck assembly for supporting a wafer. An example chuck assembly comprises a chuck hub and a centering hub disposed within the chuck hub. Chuck arms are mounted to the chuck hub, with each chuck arm extending radially between a proximal end adjacent the chuck hub, and a distal end remote therefrom. A plurality of centering cams is provided, each cam mounted at or towards a distal end of a chuck arm and being movable radially inwardly or outwardly relative to the centering hub to engage or release an edge of a supported wafer in response to a rotational movement of the centering hub. At least one vacuum pad is provided for supporting the wafer during a wafer centering or wafer processing operation.

Abstract: The invention relates to a clamping apparatus (1) for clamping a workpiece (100), which is or is to be toothed and has an axis of rotation, onto a spindle, which can be rotationally driven and has a spindle axis defining an axial direction (A), with a clamping mechanism (20), which converts an axial force (FA) transferred via a force transfer device (10) into a clamping force (Fg) directed radially to the spindle axis, wherein the force transfer device (10) has a first section (12) movably guided by a guide arrangement (30) in relation to a movement having an axial direction component, wherein the first section (12) is segmented into several transfer elements (12a, 12b, 12c, 12d) spaced apart from one another in a circumferential direction.

Abstract: The disclosure provides a compact and low-cost gripper which allows an outside diameter of a piston to be increased. Provided is a gripper including a body case having, at one end, a cylinder part having a cylinder chamber which houses a piston so as to slide the piston along a central axis of the piston, and having, at the other end, a plurality of guide parts formed at regular intervals around the center axis and extending in a direction orthogonal to the center axis; a plurality of master jaws, on which top jaws can be removably mounted, guided by each of the guide parts; and a plunger having a plurality of interconnecting means which are respectively interconnected with each of the master jaws and slides along the central axis associated with a sliding operation of the piston.

Abstract: There is provided a device for handling tires having an anchor for attaching to a prime mover and a clamping device rotatably mounted to the anchor that rotates relative to the anchor about a rotation axis. The clamping device has a plurality of engagement members connected by a mechanical linkage and a carrying body with a plurality of guides. The weight distribution of the clamping device is balanced about the rotation axis. Each guide carries one of the engagement members and is oriented to allow the engagement members to move perpendicular to the rotation axis between clamping and release positions. The mechanical linkage includes a rotating actuator and controls movement of the engagement members along the guides. The movement of each engagement member is rotationally symmetric about the rotation axis relative to the movement of the other engagement members. The device has an actuator that actuates the mechanical linkage.

Abstract: A robotic tool changer in which the coupling mechanism is actuated using magnetic force is provided. In one exemplary embodiment, a robotic tool changer may include a tool unit operatively connected to a robotic tool and a master unit operative to connect to a robotic arm. The master unit may include a housing and a piston. The piston may be disposed at least partially within the housing and configured to place the master unit in one of a coupled state and a decoupled state. Further, the master unit may be operative to assume the coupled state or the decoupled state in response to altering an orientation of magnetic fields to provide a first magnetic force that moves the piston to the coupled state or provide a second magnetic force that moves the piston to the decoupled state.

Abstract: An aluminum alloy hub lathe fixture, which includes a main plate, a mounting seat, a hydraulic power clamping head, a pull rod, a sliding seat, a connecting pin, a fan-shaped clamping jaw, a sealing cover, a deflection block, a deflection shaft, a centrifugal force balance block, a centrifugal mechanism base, a spring and screws, wherein the main plate and the mounting seat are connected together through screws, so that a housing of the entire fixture is formed; the hydraulic power clamping head is fixed on the mounting seat through screws; one end of the pull rod is mounted on the hydraulic power clamping head through screws, and the other end of the pull rod is connected with the sliding seat through the connecting pin; the fan-shaped clamping jaw is fixed on the sliding seat through screws.

Abstract: An automated tool change assembly and method for automatically coupling a robotic end effector to a robotic manipulator. The automated tool change assembly of the present invention provides first and second light-weight mechanical joint members for automated coupling to provide a rigid connection that can include an electrical connection to pass power and signals between the end effector and the manipulator. The connection can also have full pass-through mechanical power. The assembly also includes a tool station for docking an end effector. The tool station can also provide a platform to align tools with manipulators in forming the automatic connection between joint members. The tool station also provides a release bar for manually releasing end effectors from manipulators. Software scripts can connect and disconnect the tool change assembly remotely when attached to a robot.

Abstract: A chuck device capable of efficiently changing a welding tip and nozzle. The chuck device includes a rotatable chuck base, an engagement part fixed to the chuck base so as to rotate integrally with the chuck base and can engage an engagement surface of the welding tip, the engagement part allowing the welding tip to rotate with the chuck base when the chuck base is rotated while engaged with the engagement surface, and a plurality of fingers provided to the chuck base to be openable and closable and can hold the welding tip and the nozzle, the plurality of fingers being capable of moving in directions approaching and separating from the engagement part.

Abstract: A clamping device for machine tools with a power-operated chuck, the clamping jaws of which are actuatable by the clamping device via a movement converter and draw rod. A drive motor is provided with a switching element which is adjustable by axial control in a middle and two limit positions, wherein the switching element is connectable to the clamping device in one limit position and, in the other limit position, to an adjustment element connectable to an auxiliary device. The switching element is lockable in the limit positions with a machine spindle. The clamping device is thereby provided with an increased range of applications, without functions being impaired, with little structural complexity, because the switching element makes possible a clamping element integrated in the power operated chuck to be operated using the drive motor, such that further procedures can be undertaken without changing the clamping device.

Abstract: In a chucking device and a chucking method for a machine tool which grip a workpiece that serves as a target object to be processed by the machine tool, a first cylinder and a second cylinder are controlled based on the position of a piston of the first cylinder detected by a length measuring sensor, and the position of a piston of the second cylinder detected by a length measuring sensor. In this manner, the workpiece is gripped by respective gripping members at a predetermined position, i.e., the axial center, of a chuck main body.

Abstract: A rotary connector has a sleeve body having an end region, an opening, an inner surface with clamping surfaces, spokes, levers acting to press the clamping surface against an axle when the rotary connector is rotating, individual masses forming the outer body of the rotary connector, azimuthal gaps and radial gaps for allowing the individual masses to clamp or release an axle inserted into the rotary connector.

Abstract: Various structures are used in a front-loading injector, for mounting the syringe to the injector and/or preventing leakage of spilled fluid from an external surface of a syringe into the vicinity of the drive ram. A conically-shaped structure on the rearward end of the syringe is specifically disclosed.

Abstract: A setting tool for inserting an anchor rod into a borehole filled with a curable mass or filled with a cartridge containing a curable mass is disclosed. The setting tool includes a housing, which has a receptacle for the anchor rod, into which the anchor rod can be inserted in the longitudinal direction and in which the anchor rod can be fixed. At least one clamping element is tilted at an angle from the longitudinal axis of the receptacle and is supported in a guide in the receptacle in such a way that the clamping element can be moved from a receiving position, in which the anchor rod can be inserted into the receptacle in the longitudinal direction, to a clamping position, in which the anchor rod is fixed in the receptacle in the circumferential direction, by rotating the housing relative to the anchor rod.

Abstract: A clamping device (01), for use on a lathe, includes a plurality of basic clamping supports (06), which can be moved in a star-shaped formation in relation to an axis of rotation and on each of which a clamping jaw (11) for clamping workpieces can be attached. The basic clamping supports (06) can be adjusted simultaneously by means of an adjusting drive (21, 36) of the clamping device (01). At least two basic clamping supports (06) are coupled directly or indirectly to one another by an outer rocker (15). At least in the middle of the adjusting path, a limited inward displacement of a basic clamping support (06a, 06c, and 06b, 06d, respectively) leads to a swiveling of the outer rocker (15a, 15c) and an outward displacement of the other coupled basic clamping support (06b, 06d, and 06a, 06c, respectively).

Abstract: The invention relates to a clamping system for clamping a number of tools wherein said system comprises: a body; an elongated groove arranged in the body for reception of a clamping part of at least one tool; at least one pusher element extendable into the groove for pushing the clamping part of a tool against a wall of the groove; wherein shape imposed displacement means for displacing the at least one pusher element from a first position substantially freeing the groove, enabling insertion of the clamping part of a tool into the groove, towards a second position, in which the at least one pusher element extends into the groove.

Abstract: In a power-operated chuck (1) with radially adjustable clamping jaws (5) that are attached so as to swivel and be axially adjustable on an articulation lever arranged in a chuck body (2), each of the articulation levers (10) is pivotably mounted on an articulation pin (21) that passes through the articulation levers (10) and the articulation pins (21) are supported in the chuck body (2) so as to prevent rotation and are guided to permit limited axial movement. This embodiment makes it possible not only to carry out precise clampings of workpieces (W) over a long period with a consistently high level of rigidity, but also to avoid wear to a large extent. As a result, workpieces can always be clamped precisely whilst a high level of repeat accuracy is provided.

Abstract: In a power-operated chuck (1) with radially adjustable clamping jaws (5) that are attached so as to swivel and be axially adjustable on an articulation lever arranged in a chuck body (2), each of the articulation levers (10) is pivotably mounted on an articulation pin (21) that passes through the articulation levers (10) and the articulation pins (21) are supported in the chuck body (2) so as to prevent rotation and are guided to permit limited axial movement. This embodiment makes it possible not only to carry out precise clampings of workpieces (W) over a long period with a consistently high level of rigidity, but also to avoid wear to a large extent. As a result, workpieces can always be clamped precisely whilst a high level of repeat accuracy is provided.

Abstract: Semiconductor technology requires the use of object holders, which are capable of holding wafers securely, also during rotation. In order to save time and expense, such holders should be suitable for integration directly into a processing facility, wherever possible. According to the invention it is proposed to provide centrally mounted holders which comprise support surfaces for the wafer and pivotable gripper fingers, in which the gripper fingers are pretensioned by means of at least one pretension element in the holding position and are actuated through one opening mechanism, in which at least one opening mechanism and at least one pretension element are integrated in the central clamping arm fixture and/or in the clamping arms.

Abstract: Anti-deflection tooling is provided for a pull back chuck. Equally spaced gussets are disposed between the riser body and the face plate of the chuck, to minimize or eliminate deflection of the face plate when a workpiece is clamped into the chuck. Adjustment devices are also provided so that existing chucks can be retrofitted with the anti-deflection tooling and an operator can true up the face plate prior to running a part.

Abstract: A chuck has a chuck body rotatable about a main axis and a plate displaceable axially on the body between an outer position and an inner position. Springs urge the plate into the outer position. A locking element on the body can move between a blocking position preventing displacement of the plate from the outer position into the inner position and a freeing position permitting such displacement. A plurality of jaw holders angularly spaced about the axis are fixed axially on the plate and each have radially displaceable outer and inner ends. A piston axially displaceable in the body has cam formations engaging the jaw-holder inner ends for radially displacing the jaw-holder outer ends on axial displacement of the piston.

Abstract: A chuck for gripping a workpiece in a machine includes a chuck body, jaw assemblies and an adapter assembly. A through hole is defined axially in the chuck body. The jaw assemblies are radially and moveably mounted in the chuck body and pivoted by the adapter assembly. The adapter assembly is moveably mounted in the through hole in the chuck body and has a coupling member that is adapted to attach to a draw rod of the machine. The adapter assembly will axially move as the draw rod moves and drive the jaw assemblies inward to grip a workpiece. The coupling member is replaceable and attaches to the draw rod so the chuck is quickly changed without changing the draw rod of the machine.

Abstract: The chuck comprises jaws which, in addition to their radial movement, can each swivel around an axis essentially parallel to the axis of the chuck, and where this axis glides in a radial slideway of the chuck in order to allow said radial movement. This swivelling action ensures that the working surfaces of the jaws or of shoes sitting on them which are adapted to the outer shape of the workpiece will sit evenly on the workpiece even when the latter is mounted between centers and as a consequence its rotation axis does not coincide exactly with that of the chuck.

Abstract: The chuck comprises jaws which, in addition to their radial movement, can each swivel around an axis essentially parallel to the axis of the chuck, thus ensuring that the working surfaces of the jaws or of shoes sitting on them which are adapted to the outer shape of the workpiece will sit evenly on the workpiece even when the latter is mounted between centers and as a consequence its rotation axis does not coincide exactly with that of the chuck.

Abstract: A chuck has a chuck body rotatable about a main axis and a plate displaceable axially on the body between an outer position and an inner position. Springs urge the plate into the outer position. A locking element on the body can move between a blocking position preventing displacement of the plate from the outer position into the inner position and a freeing position permitting such displacement. A plurality of jaw holders angularly spaced about the axis are fixed axially on the plate and each have radially displaceable outer and inner ends. A piston axially displaceable in the body has cam formations engaging the jaw-holder inner ends for radially displacing the jaw-holder outer ends on axial displacement of the piston.

Abstract: A clamping device for objects, has a housing, at least two clamping jaws which is radially displaceably guided relative to a longitudinal central axis, actuating elements associated with the clamping jaws for actuating the latter, clamping pistons displaceable in a cylinder chamber and acted for clamping of the clamping jaws by a pressure medium under pressure at least in one working direction, the actuating element being in operative communication with the clamping piston at least in a working position, at least one central adjusting device displaceably arranged in the housing and acting on the actuating elements, abutment means including an abutment for each of the actuating element against which each of the actuating elements can abut, the actuating elements being formed as angular levers which are turnably held in the housing and engage at one end with associated one of the clamping pistons and on the other hand with an associated one of the clamping jaws.

Abstract: A power chuck assembly for securing a workpiece as the chuck assembly moves or rotates the workpiece is disclosed. The assembly includes a body portion, at least two gripping members and at least two counterweights wherein said counterweights operate to assist in securing a workpiece upon the chuck assembly.

Abstract: A sliding jaw chuck assembly for heavy duty applications has a plurality of radially slidable jaw mounts each actuated by an L-shaped lever mounted for rocking movement about a supporting trunion. The chuck assembly includes a sealed housing subassembly which encloses a sliding jaw subassembly. The sliding jaw subassembly utilizes a plurality of master slides, each slide having a jaw support portion and a counterweight support portion interconnected by a bridge. A gripping jaw is releasably secured to the jaw support portion and a counterweight is releasably secured to the counterweight supporting portion.

Abstract: Pinching of the fingers of an air chuck is prevented during opening or closing in order to allow them to open or close smoothly and to miniaturize the air chuck. In a linear guide air chuck having a rod that is operated by an air cylinder mechanism; a pair of fingers is provided that can be opened and closed to grip a workpiece; a guide mechanism moves the fingers linearly to open or close them; and a pair of levers convert operation of the rod into the opening and closing operation of both fingers the lever and finger being coupled together by fitting a spherical engagement element formed on the lever so, in a circular engagement hole cut in the top surface of the finger, at a position at which the acting force of the lever can be transmitted to the finger at nearly the same height as that of the guide mechanism.

Abstract: A method and apparatus for a self compensating and geometrically centering jaw type chuck for engaging and retaining a workpiece, particularly an asymmetric workpiece, wherein a geometric center of the workpiece is aligned with a rotation axis of the chuck. The chuck includes two opposing jaws each of which is rotatable about a pivot pin extending from a radially adjustable jaw slide. Each jaw includes an outer end that is slidably and rotatably coupled to a rotatable ring symmetrically disposed about the rotation axis by a synchronizing pin having a first end rotatably disposed on the rotatable ring, and a second end, slidably engagable with the outer end of the jaw. The rotation of one jaw about the pivot pin rotates, in synchronism, the rotatable ring and the other jaw to maintain the geometric center of the asymmetric workpiece in alignment with the rotation axis of the chuck. The jaw slides are radially adjustable to open and close the jaws by reciprocating a piston along the rotation axis of the chuck.

Abstract: Polyvalent clamp chuck for machine-tools comprising a cylindrical chuck body in the front face of which are radially guided at least two gripping jaws that can be brought together or separated by drive means by the axial withdrawal or advance of an internal control cylinder concentric with the chuck. The control cylinder is provided at its front end with a connector member, for instance in the form of an inwardly directed gripping flange for additional fitted support means. The coaxial front opening of the chuck has a conical part whose summit is oriented rearwards. The chuck further comprises means for selecting the maximum amplitude of displacement of the control cylinder.

Abstract: A power chuck includes a body, a plurality of work engaging jaws, a plurality of rocker arms carrying the jaws, and a plurality of swivel mountings connecting the rocker arms to the body. The power chuck also includes a plurality of slide members connected to and matingly engaging the rocker arms and a reciprocable actuator disposed centrally of the rocker arms and operatively cooperating with the slide members. Reciprocatory movement of the actuator along the slide members rocks the rocker arms in the swivel mountings and moves the jaws radially relative to each other.

Abstract: The invention relates to a clamping chuck. The clamping parts of the jaws are connected to support pieces sliding radially inside the body by means of bolts sliding axially inside these support pieces and provided with teeth.An axially sliding operating ring causes the jaws to clamp by acting on the support pieces by means of levers for example. The bolts are operated by actuating members.To avoid undesired clamping when the clamping parts are disassembled or adjusted, means lock the operating ring when an actuating member is in the position corresponding to retraction of the bolt, preferably before this retraction can be performed.

Abstract: A four-jaw self-centering chuck comprises a housing (1,12) having mounted therein radially movable clamping jaws (3,14) cooperating with a self-centering mechanism operatively connected with a drive for imparting radial motion to the jaws (3,14). The self-centering mechanism includes four levers (6, 25) having their pivot axles (7, 24) carried by a member of the drives. The clamping jaws (3, 14) are adapted to receive therein the ends of the adjacent levers (6, 25) forming a closed force circuit (11, 28).

Abstract: An automatic tool-changing device for industrial robots includes a gripper member located at the end of the robot arm and a coupling flange to which a tool is fixed. The gripper member has radially-movable engagement teeth adapted for insertion in projecting appendages carried by the flange, upon automatic clamping of the tool. The movement of the engagement teeth is driven by a pressurized-fluid jack housed in the gripper member.

Abstract: A power-operated chuck that is provided with a plurality of clamping jaws that are disposed in a chuck body in such a way as to be radially movable. The radial clamping movement of the clamping jaws is produced by a gear mechanism disposed in the chuck body and via an axial movement of a drive member. Radial positioning of the clamping jaws relative to the starting position of the drive member is adjustable, prior to carrying out a clamping stroke, for shifting the clamping stroke within the clamping range, with adjustment being effected by an adjustment member that acts simultaneously upon all of the clamping jaws. Via an additional axial movement, the drive member can be conveyed to a position that is beyond the clamping range, and in which position the clamping jaws are uncoupled from the drive member. An additional adjustment member is axially movably disposed in the chuck body.

Abstract: A workholder for a machine tool or the like having a power assembly and a work gripping assembly that are separable to permit use of a plurality of work gripping assemblies and associated work gripping jaws of a size and shape to accommodate different workpieces. Work gripping assemblies with jaws pre-qualified to different workpieces can be exchanged quickly and automatically, as by use of a robot, when different parts are to be machined, while a single power assembly remains connected to the machine tool.

Abstract: Chuck provides for each jaw an action bar extending substantially longitudinally of the chuck axis and rockable in an action plane radiating from the chuck axis and intersecting the jaw, and a pair of first and second slides for each action bar, with said slides being guided for movement in the associated action plane in opposite directions normal to the chuck axis, with the first slide pivotally supporting the bar intermediate its ends about an axis normal to the action plane, the second slide having with one end of the bar a floating pivot connection with its pivot axis extending normal to the action plane, and the other end of the bar having with the jaw a floating pivot connection with its pivot axis extending normal to the action plane, so that on moving the first slide relative to the other slide in opposite directions the bar is rocked about its floating pivot connection with the second slide as a fulcrum for opening and closing the jaw, and on moving the second slide relative to the first slide in opp

Abstract: A system for holding workpieces during machining utilizes a support chuck which may be mounted on a machine tool such as a lathe or it may be mounted on a support adjacent the machine tool such as a turnaround or carrousel. The invention utilized an adapter plate constructed to be gripped by the support chuck. The adapter plate in turn mounts the chuck which actually holds the workpiece. The support chuck has means to clamp the adapter plate to it and to precisely center the plate and its workpiece gripping chuck concentrically of the support chuck. The adapter plate is so constructed that the chuck manipulation rods and pulls conventionally used with chucks or various types can pass through it to actuate the workpiece holding chuck.

Abstract: A power tong having a frame with an open throat at one end and a pipe gripping mechanism situated for rotation within the frame, carrying three pipe gripping dies about equally spaced around the longitudinal axis of the pipe. Only one of the pipe gripping dies is driven toward the pipe by cam action of the rotating mechanism. The other two pipe gripping dies pivot and achieve their pipe loading capability from the action of the cam driven pipe gripping die. Once the rotation of the pipe has been achieved, the rotating mechanism returns to such a position that the open throat of the rotating mechanism coincides with the open throat of the frame, whereby the pipe, having been spun, can then be released.

Abstract: A rotary chuck having a plurality of clamping elements for clamping a respective workpiece. The clamping elements are interchangeable for adaptation of different dimensions of the workpieces, and can be actuated by a force operation via a direction-changing chuck or drive. At least one of the clamping elements is provided with a tension detector.

Abstract: A workholder for a machine tool or the like having a power assembly and a work gripping assembly that are separable to permit use of a plurality of work gripping assemblies and associated work gripping jaws of a size and shape to accommodate different workpieces. Work gripping assemblies with jaws pre-qualified to different workpieces can be exchanged quickly and automatically, as by use of a robot, when different parts are to be machined, while a single power assembly remains connected to the machine tool.

Abstract: A chuck comprises a body (10) rotatable about an axis (11) and at least one jaw (12) movable in a radial direction to clamp a workpiece in the chuck. At least one operating lever (14) is mounted on the body (10) and the, or each, lever is operable to move a jaw (12) radially. The, or each, lever is also movable axially with respect to the chuck body (10), to disengage from the associated jaw (12), enabling the associated jaw (12) to be removed simply and quickly from the chuck body (10) by movement in the radial direction.

Abstract: A chuck with radially reciprocating jaws is disclosed wherein each jaw is supported on a jaw support member movable relative to a base. An actuator is axially disposed in the base for axial reciprocation, the actuator having pivotally connected first and second links which extend radially from the actuator to engage the jaw support member. An eccentric cam connects each of the links to the jaw support member so as to translate the axial motion of the actuator into radial motion of the jaw member. One of the eccentrics has a fixed defined axis with respect to the base, while the other eccentric is received in bushings which are axially slidable with respect to the base.

Abstract: A chuck for a workpiece comprising an annular piston housed in the main body of the chuck, an annular adjusting member supported on a cylindrical rod portion integral with the piston and movable only radially thereof, and three clamp levers pivotably mounted on the chuck main body and arranged at an equal spacing along the circumference thereof for radially driving clamp jaws on a front plate of the main body. Each of the clamp levers has a rear end in engagement with a tapered surface on the outer periphery of the adjusting member. With the portion of the workpiece to be machined held in its centered position, another portion of the workpiece is held by the clamp jaws, and three wedge-like lock members arranged between the cylindrical rod portion and the adjusting member at an equal spacing circumferentially thereof are individually advanced to lock the adjusting member.

Abstract: A spindle powered adjustable chuck for forcefully gripping a workpiece capable of automatically adjusting gripping diameter comprising a support frame having a plurality of radially oriented jaw receiving compartments, jaws displaceable within the jaw receiving compartments, and worm gears for radially displacing the jaws, clamps for simultaneously displacing the jaws to a clamping position preparatory to rotating the chuck for operation, a spindle for rotatively driving the support frame, a planetary gear train including an internally splined sun gear and a plurality of planetary gears, splined shaft for coupling the planetary gears to the worm gears, and a two position splined key for operatively engaging and disengaging the planetary gear train, including a compression spring for biasing the splined key to a first position whereat the planetary gear train is fixed relative to the support frame, whereby rotation of the spindle can rotate a workpiece clamped to the support frame, the splined key being displa

Abstract: A centrifugal force compensated chuck (12) using a moderately sized counterweight (60) and force multiplication to achieve proper compensation. Each counterbalance assembly includes a pair of levers (32, 40) pivotable about a common axis (34). One of the levers (32) is connected through an appropriate mechanical interconnection to an associated chuck jaw (15), the other lever (40) engages a counterweight (60) which moves out from the center of the chuck (12) during rotation. A ratchet (36) and pawl (42) mechanism is provided between the first and second levers. When the chuck (16) is stopped, the counterweight (60), which is spring biased, moves to a position disengaging the ratchet and pawl. With the ratchet and pawl disengaged the pair of levers are free for independent movement about their pivot axis. When the chuck is rotated the counterweight mechanism moves outward and the ratchet (36) and pawl (42) engage causing the pair of levers to move in unison.

Abstract: A chuck for heavy duty applications has a plurality of radially slidable jaw mounts each actuated by an L-shaped lever mounted for rocking motion about a supporting trunnion. The levers each have a leg engaging one of the jaw mounts and another engaging an actuator. An external lubricant receiving port is provided adjacent each trunnion and a multiple conduit lubricant distribution system is provided extending through the supporting trunnion and actuating lever. The chuck body also has a lubricant flow channel through which lubricant flows circumferentially of the chuck to assure uniform distribution, eliminating lubricant concentrations and eccentric weight distribution in the chuck.

Abstract: A multi jaw rotary chuck for lathes and the like comprising a body having front and rear portions and including a bore, a plurality of spaced jaw guides in the front portion of the body, a plurality of movable master jaw supports for the jaws of the chuck, the jaw guides each having one of the master supports slideably guided thereby, a plurality of actuator plates in the body each mounted in spaced radial planes intersecting and parallel to the axis of the bore and each actuator plate having first, second and third apexes, the first apex of the plate having a hole and including a first dowel pin mounted in the hole and extending outwardly on either side thereof transverse to the plane of the respective plate, the second apex of each plate having a hole and including a second dowel pin mounted in the hole and extending outwardly on either side thereof transverse to the plane of its respective plate and generally parallel to the first dowel pin, pivot means on each of the actuator plates journalled in the body

Abstract: A cylinder gripping apparatus having a jaw, a body and a floating interfacing assembly having a curved surface bearing against an opposing surface or groove, the interfacing assembly being operable to generate a proportional gripping force in response to an axial force upon the cylinder to be gripped. The jaw is not connected to the body. The interfacing assembly is operable to permit a transverse displacement of the jaw.