Abstract: A securement device for a press tool including an angular exterior body having a side wall. A multitude of ratcheting bodies are located around a top edge of the exterior body. The ratchets include a ratchet bar. The ratchet bar has a plurality of ratchet grooves that allow the ratchet bars to be slide inward toward the interior of the exterior body and to be locked into place. An interior body is located within the exterior body such that it can be moved about and provide extra support for the ratchets.
Abstract: A chuck (10) is provided that includes a plurality of jaws (20) and a body (30) configured to rotate with a drive spindle of a power driver. The chuck (10) may also include a nut (80) comprising nut teeth (82). The nut (80) may be operably coupled to the jaws (20) and configured to move the jaws (20) relative to the body (30) in the opening or closing direction. The chuck (10) may also include a clutch (100) comprising clutch teeth (102). The clutch (100) may be configured to move between a working position and a jaw actuating position. In the working position, the clutch teeth (102) may be engaged with the nut teeth (82) to prevent movement of the nut (80) relative to the body (30), and, in the jaw actuating position, the clutch teeth (102) need not be engaged with the nut teeth (82) and the nut (80) may be free to move relative to the body (30).
Abstract: A clamping chuck having a body (2) with a slidable spindle (7) in a housing (9). The housing is inclined relative to the axis (xx?) of the chuck and exiting through the front face (3), the spindle (7) movement driven by a piston (19) along the chuck axis and the spindle equipped with a groove (15) into which slides a drive section (25) of the piston. An end of the spindle (7) has a notch (17) exiting into the groove (15) such that, when positioning the spindle from the front face (3) of the chuck, allows the spindle (7) to move along the drive section (25) and touch the latter and enable its groove (15) to be positioned facing the drive section (25), such that such that after one rotation of the spindle (7) around its axis (uu?), the groove (15) engages with the drive section (25).
Abstract: A universal rotating chuck system capable of accommodating multiple small-batch or one-off machining jobs, involving workpieces of different diameter and composition, comprises a rotating chuck having multiple jaws that may be adjusted positionally inward or outward towards the longitudinal centerline of the workpiece or removed entirely. The chuck is rotated by a dual-motor system driving an inner and outer shaft, where the inner shaft is selectively coupled to the outer shafts to rotate independently and adjust the jaws, or rotate alongside the outer shaft to rotate the chuck. In operation, the system is capable of conducting numerous machining operations independent of direct user intervention, including loading/unloading workpieces, loading/unloading tools, measuring tools and workpieces for quality control, and storage.
Abstract: A chuck for supporting rotationally symmetrical workpieces to be machined, comprising a chuck body having at least three guideways worked into its end face running in the direction of the longitudinal axis of the chuck, at least three clamping jaws inserted individually into each of the guideways in a movable arrangement, and a driving means in a driving connection with the clamping jaws directly or via intermediate elements, with each of the clamping jaws of the chuck being adjustable during machining using driving means configured as an electric motor, with each clamping jaw having an electric motor arranged inside the chuck body, and when the chuck is stationary, the electric motors are electrically connected to a power source by means of a plug-and-socket connection and electrical cables, and/or when the chuck is rotating or at a standstill each electric motor is connected to the power source via an induction device.
Abstract: A robot gripper includes a main gripper body that has a connection flange designed to secure the rotational gripper to a tool flange of a robotic arm; a base element that is mounted on the main gripper body such that it can rotate about a first rotational axis by a first rotational joint able to be adjusted automatically by a first drive motor; a first gripper finger mounted such that it can rotate about a second rotational axis aligned parallel to the first rotational axis, relative to the base element, by a second rotational joint which can be adjusted automatically by a second drive motor; and at least one additional gripper finger. The second rotational joint is configured to adjust the first gripper finger individually, using the second drive motor, independently of the at least one additional gripper finger.
Abstract: A palm-type mechanical gripper with variable-position and rotatable fingers and a dual-drive crank-slider parallel mechanism is provided with a crank-slider mechanism on the left side, which is an active driving structure and is driven by two stepping motors to respectively generate angular displacement of cranks and to change lengths of connecting rods, and a crank-slider mechanism on the right side, which is a driven mechanism and is driven at a constant speed by a pair of gears. The mechanical gripper is provided with three plate spring fingers, wherein two fingers are respectively installed on the connecting rods on left and right sides, and under the cooperative effect of the two stepping motors, the eccentricities of the cranks, the positions and angles of the two fingers respectively on the two connecting rods and the position of the other fixed finger can be changed through manual adjustment.
Abstract: The invention relates to a clamping chuck for clamping pallets furnished with a clamping spigot. The clamping chuck has a locating opening for the clamping spigot and a clamping device for clamping the clamping spigot in the locating opening. A plurality of sensors are arranged on the clamping chuck, by means of which the clamping force actions on the clamping spigot may be determined as well as other values. The clamping chuck is equipped with a transmitter for wireless transmission of parameters detected by means of the one or more sensors.
Abstract: A stair form member attached jaw is installed with the stair form member provided at the bottom face of the soft jaw. The stair form member is held between a pair of grips in the jaw installing groove of the master jaw from both sides of the radial direction, thereby pulling the stair form member to the bottom direction of the jaw installing groove. The position of the radial direction of the soft jaw is determined by the engagement between the bottom face of the soft jaw and the upper serration faces of the master jaw; and the position of the soft jaw in the tangent line is determined by the close contact of the stair form member to the side face of the jaw installing groove.
Abstract: The invention relates to a large-stroke tensioning device in a wheel machining process. The large-stroke tensioning device in the wheel machining process comprises a base (1), a servo motor (2), a mounting plate (3), a connecting plate (4), a shaft sleeve (5), an oil cylinder (6), a gland (7), bearings (8), a connecting shaft (9), a chassis (10), positioning pins (11), a flange plate (12), springs (13), sliding pedals (14), an expanding core (15), a protector (16) and the like. The large-stroke tensioning device can meet requirements of clamping and positioning of a wheel, and meanwhile has the characteristics of simple structure, convenience in manufacturing, stable performance and capability of meeting machining requirements on precision.
Abstract: A housing for a scroll compressor and a scroll compressor are provided. The housing includes: a cannular central part; a center hole disposed at the cannular central part; a plurality of arms substantially extending radially from the cannular central part, the plurality of arms being used to be connected with a fixed scroll of the scroll compressor; and a thrust bearing surface disposed on a first side of the cannular central part in an axial direction, the thrust bearing surface being used to support an orbiting scroll. The orbiting scroll is supported with low friction, the motor supporting shell tube and the fixed scroll are connected with better alignment, and materials and machining costs are saved. In addition, the housing can provide better support for a scroll set, thereby achieving better performance.
June 9, 2015
Date of Patent:
October 23, 2018
Danfoss (Tianjin) Ltd.
Ma Lin, Sun Zili, Jiang Wei, Yao Wenhu, Wang Feifei, Chen Yu, Zhang Kailai, Zhang Jiunan
Abstract: A powered clamp for transmitting torque to a drill pipe comprises an outer housing disposed around an axial central passage and connected to a plurality of carrier guides defining a plurality of radial slots. An inner housing defines a coaxial central passage, is rotatably connected to the outer housing, and defines a plurality of actuator slots having a spiral configuration relative to the centerline axis. A carrier is slidably disposed in each slot between the carrier guides and has a carrier pin extending into a respective one of the actuator slots. At least one powered linear actuator is connected between the outer and inner housing to selectively rotate the housings relative to one another. This rotation causes the carriers to move radially inward and outward as the carrier pins travel along the actuator slots, selectively gripping and releasing the drill pipe.
Abstract: A rotary chuck for processing wafer-shaped articles comprises a chuck body having a series of gripping pins that are movable by sliding horizontally and in unison relative to the chuck body from a first position in which the gripping pins are relatively more retracted into the chuck body to a second position in which the gripping pins are relatively more extended from the chuck body and in which the gripping pins are positioned so as to support a wafer-shaped article of a predetermined diameter.
November 3, 2015
Date of Patent:
February 6, 2018
Lam Research AG
Andreas Gleissner, Michael Brugger, Thomas Wirnsberger
Abstract: The present disclosure provides an apparatus having a base with at least one guide formed along a length thereof. A fitting clamp and a tube clamp are coupled to the base and spaced apart from one another. A drive mechanism is operable for moving at least one clamp relative to the other clamp along the guide of the base so as to slidingly assemble a tube and fitting together.
Abstract: Disclosed therein is an adapter-exchangeable type tool holder, which includes an adapter having fastening holes formed therein and a spindle having blocks and bolts detachably mounted to the fastening holes, wherein the blocks are respectively rotatable on hinge pins joined to the spindle, so that the spindle can be easily joined to and separated from the adapter.
Abstract: A method of placing under a protective atmosphere a watch case fitted with its movement, includes: installing the watch case in the housing of a support including a unit for holding the watch and a unit for guiding an actuator acting on a part of the case; introducing the support into a flexible pouch; installing the support in the open pouch in a device for imposing a protective atmosphere; reducing the pressure within such device; closing the pouch containing the support; extracting the support from the sealed pouch of the device for imposing a protective atmosphere; closing the watch case by acting on the actuator via the outside of the pouch in order that it displaces a part of the watch according to the guide unit in order to close the watch; opening the pouch and separation of the actuator from the part of the case on which it acts.
Abstract: An adjustable dismantling tool for annular member is provided. A handle has opposing first end and second end and an axial direction passing through the first and second ends. A first main body is disposed at the second end and radially unmovable relative to the axial direction. A second main body is rotatably assembled with the first main body, radially unmovable relative to the axial direction and radially formed with a plurality of guiding troughs relative to the axial direction. Each of movable members has a guiding block slidably disposed in corresponding guiding trough. Each of connecting arms is disposed between the first and second main bodies, pivoted to the first main body and one of the guiding block to respectively form a first pivoting portion and a second pivoting portion, and swingable about the axial direction with the first pivoting portion as the center.
Abstract: A device for clamping a collet in a machine tool having a rotatable spindle and a spindle nose thereon includes a mounting portion fastenable to the spindle and a clamping portion extending from the mounting portion. A bore is defined through the clamping portion and the mounting portion. At least one moveable ring is located within a portion of the bore defined by the clamping portion, the moveable ring being configured to receive the collet or any other appropriate clamping tool. At least one screw is mounted in the clamping portion and can be tightened against the moveable ring. The collet or clamping tool is attachable to the spindle nose of the machine tool and is drawn into the bore of the clamping portion. A method of clamping a collet includes providing the clamping device, attaching the device to the machine tool, inserting the collet into the clamping device, and attaching the collet to the spindle nose.
Abstract: A manually operated chuck for machining of rotationally symmetrical workpieces, the chuck comprising: a base body, attached to clamping jaws radially movable on the base body for securing the workpiece and in which an opening extends at right angles to a longitudinal axis of the base body; a threaded spindle movably mounted in the opening and accessed from outside to change the position, thereof; a wedge bar in the base body proximate the spindle, the wedge bar being connected to the spindle and a clamping jaw in a shape-locking arrangement; a driving ring rotationally mounted in the base body and connected to the threaded spindle and to one of the wedge bars with play between the threaded spindle and driving ring, and/or the threaded spindle and a wedge bar, and/or between the driving ring and wedge bars of the clamping jaws, the workpiece disposed concentrically to a longitudinal axis of the chuck.
Abstract: A power-operated chuck for machine tools, the chuck having a base body attachable to the machine tool, at least two clamping jaws held moveably in the base body are synchronously controlled and moved radially onto a workpiece to be clamped by one wedge rod each, and an actuating element is held in an axially movable arrangement in the base body and is connected in a force-locking arrangement with each of the wedge rods and is held coaxially in the base body in relation to its longitudinal axis, there being play between the actuating element and the base body, the chuck permitting central positioning of the workpiece to be clamped in relation to the longitudinal axis of the chuck and, the chuck permitting the centering adjustment to be undertaken throughout the machining process.
Abstract: A chuck including: (a) a main body; (b) three slot-defining members each constituted by a member independent of the main body and defining therein a guide slot, and detachably attached to the main body; (c) three jaws each including (c-1) a fitted portion slidably fitted in the guide slot defined in the corresponding slot-defining member and (c-2) an engaging portion which projects from the fitted portion in an axial direction and which is configured to engage with a circumferential surface of an object that is to be held by the chuck; and (d) three pairs of pressing members detachably fixed to the three slot-defining members. Each pair of the three pairs of pressing members engage with the fitted portion of the corresponding jaw, for thereby preventing separation of the fitted portion of the corresponding jaw from the guide slot defined in the slot-defining member.
Abstract: An adjustable workpiece-holding chuck including a chuck body with at least one jaw recess formed therein, which receive an operating jaw. A master jaw may be connected to the operating jaw via an adjustable cartridge assembly that includes a cartridge insert mounted to a recess formed in the master jaw. The cartridge insert includes a cartridge opening formed therein for receiving an adjustable screw. The adjustable screw is mounted to a yoke formed in the operating jaw, thereby releasably connecting the master jaw to the master jaw. The cartridge opening and the adjustable screw preferably have corresponding threads that form a full-diameter circumferential connection with each other. More preferably, the cartridge opening and the adjustable screw have complementary Acme threads.
Abstract: A workholding apparatus comprising a chuck body, first jaw members and second jaw members wherein the second jaw members are shaped to grip a workpiece of a particular geometry. The first and second jaw members are constructed to enable easy, quick and manual replacement of the second jaw members with other second jaw members having different grip shapes so as to enable gripping of workpieces with different geometries.
Abstract: A multiple pivoted lathe chuck jaw assembly utilizes a plurality of baseplates each having one or more sub-jaws pivotably attached thereto. Each baseplate is configured for attachment to, or is part of, the radially movable elements of a lathe chuck. Further, each baseplate has two pivotably attached sub-jaws. Each sub-jaw has two compression and two expansion workpiece gripping surfaces extending generally outwards from the front face of the baseplate: a first tier compression gripping surface, a second tier compression gripping surface, a first tier expansion gripping surface, and a second tier expansion gripping surface. The gripping surfaces each approximate a curved shape that matches the shape of a circle of a given radius allowing the sub-jaws to pivot and self-align to the workpiece surface for maximum surface contact and gripping force. Force-directed serrations can provide additional holding force toward the face of the chuck.
Abstract: A substrate processing apparatus is used for a spin drying apparatus, a pencil-type scrubbing cleaning apparatus, an IPA drying apparatus and the like, which are used as semiconductor wafer processing apparatuses. The substrate processing apparatus includes a substrate stage and a substrate chuck mechanism. The substrate chuck mechanism includes a chuck body having a substrate placing portion configured to place a peripheral portion of a substrate and a guide surface configured to guide an outer circumferential end surface of the substrate and to position the substrate when the substrate is placed on the substrate placing portion, and a chuck claw rotatably supported on the chuck body and configured to hold the peripheral portion of the substrate between the substrate placing portion and the chuck claw by turning the chuck claw inward in a closing direction.
Abstract: A device for holding an essentially cylindrical work piece (22), in particular a jewelry ring, for machining with a laser beam (L) has at least one chuck (20) that is supported so that it is able to rotate around a rotation axis (18) and that is provided for centrally holding the work piece (22) by means of first clamping elements (30), which automatically fix the work piece (22) in position through the exertion of a spring force.
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: A parallel power chuck for clamping two ends of a shaft or similar workpiece for machining using two centering mechanisms. The centering mechanisms independently operate from a single internal actuation mechanism and clamp each end of the shaft regardless of shaft size from end to end. The internal actuation mechanism further equalizes applied clamping force after compensating for size variation.
June 16, 2011
December 20, 2012
Thomas Michael Grobbel, Ryan Lynn Wejrowski, Thomas Allen Borysiak, Daniel Ray Duell, Brian J. Crowley
Abstract: A quick change jaw system for chucks is provided. The quick change jaw assembly includes a master jaw including a first pair of coplanar abutment surfaces defining a first aperture; a clamping device including a dovetail portion being disposed in the first aperture of the master jaw, wherein the dovetail portion rests above the first pair of coplanar top surfaces of master jaw; a top jaw formed with a groove longitudinally extending along a length of the top jaw, the groove being complementary to the dovetail portion and configured for engaging the dovetail portion, the top jaw including a second pair of coplanar abutment surfaces extending along opposite sides of the groove; and a cam for actuating the clamping device for urging the second pair of coplanar abutment surfaces of the top jaw into coengagement with the first pair of coplanar abutment surfaces of the master jaw.
Abstract: A base jaw and a top jaw of an implement clamping system, which can be plugged into each other and which comprise engaging surfaces configured together into cuneal manner and limiting the depth of penetration between the two jaws. The wedge angle is at least 85° or more, but at most 140°, thereby substantially avoiding jamming the engaging surfaces while nevertheless the top jaws are held in place in all directions by the base jaws.
Abstract: A clamping device for fixing a machined part to a processing axis in a machine tool including the processing axis, a clamping head which is rotatable thereabout and with clamping elements floatably arranged thereon.
Abstract: A jaw and a related jaw assembly, the jaw assembly having a master jaw with a longitudinal axis and top and bottom surfaces, first and second side surfaces, a master jaw bore extending longitudinally therein between the top and bottom surfaces, and a channel extending from the first side surface to the second side surface generally transverse the longitudinal axis, and a top jaw adapted to be coupled to the master jaw and defining a top jaw bore positioned in substantial alignment with the master jaw bore.
Abstract: A method and apparatus are provided, for clamping a fiber placement tool to a fiber placement machine, along a rotational axis of the fiber placement machine, through use of a clamping apparatus having a plurality of drive lugs extending axially from the machine, and having three intersecting faying surfaces thereof which mate simultaneously in substantially intimate contact with three corresponding intersecting faying surfaces of a plurality of drive lug receptacles extending axially from the tool. Pairs of movable tines, disposed on opposite sides of each drive lug, pull the drive lugs into intimate contact with the drive lug receptacles. Master fixtures are used for setting the drive lugs and lug receptacles with respect to corresponding ones of the other, to achieve a desired intimate fit between faying surfaces thereof.
Abstract: The invention relates to an electrical stressing means having a housing (2) which can be attached to the drive spindle of a machine tool and in which a threaded rod (3) for adjustment of the clamping jaws of a chuck is mounted such that it can be moved axially, and having an electric actuating motor (4), whose rotor is connected for drive purposes to a drive wheel (6). The drive wheel (6) is connected to the shaft generator (7) of a harmonic drive, and the internal gearwheel (8) of the harmonic drive is connected to the housing (2), with the steel bush (9) (flexspline), which has an external tooth system, of the harmonic drive being provided as a drive for the spindle nut associated with the threaded rod (3).
Abstract: A machine tool having a carrier device for workpieces or tools or tool spindles. A console supports the carrier and can be pivoted about a first axis (X) from the horizontal into the vertical position and beyond. The console is pivotably housed on carriages guided in the machine body. The carrier for a workpiece, a tool, or a tool spindle is arranged on the console, and a drive device is provided for the synchronous displacement of the carriages on guide rails fixed on the machine tool. The console is hinged via two crank-like arms to the stationary machine body in addition to being supported on both carriages to form a kniematic coupling.
Abstract: A chuck (10) has a chuck body (12), which is provided with three guide devices (24), on each of which is received a radially movable clamping holder (34) for fixing a workpiece to chuck body (12), the guide device (24) being constructed separately from the chuck body (12). Guide device (24) is integrally joined by a polymer concrete filling (46) to the chuck body (12) for a force transfer between guide device (24) and chuck body (12). There is no need for a particularly precise manufacture of the outer contour of guide device (24) and the recess (20) in chuck body (12), because the polymer concrete (46) is able to compensate tolerances.
Abstract: A clamping chuck has a chuck body and clamping jaws that are shiftable in radial jaw guides. Conveying elements are radially guided in the chuck body. Lubricant is pumped into lubricating orifices, and through them to lubrication points by radial motion of the conveying elements. Each pocket has at least one pump piston in a cylinder bore of the conveying element, and is held in the pocket in so that the conveying element moves relative to the pump piston. The pump piston protrudes through the conveying element and into the radially outer region of the pocket. The tubular end portion is connected to the piston space. A first nonreturn valve is provided in the pump piston. The piston space is connected to a lubricating orifice of the chuck body, and a second nonreturn valve allows lubricant flow from the piston chamber to the lubricant conduit.
August 30, 2006
Date of Patent:
July 27, 2010
Schunk GmbH & Co. KG Spann- und Greiftechnik
Abstract: A workpiece gripping apparatus comprising a base, two centering jaws displaceably guided on the base so as to be movable toward and away from one another, and an actuator jaw displaceably guided on both of the centering jaws. The actuator jaw is movable toward and away from the base, with movement of the actuator jaw causing movement of both of the centering jaws, which are adapted to center a workpiece between them.
Abstract: A clamping fixture features a chuck provided with a locking mechanism for releasably locating a workpiece pallet. The locking mechanism comprises a plurality of clamping members which in the locked position are engineered to engage a clamping spigot connected to the workpiece pallet. Each clamping member, or alternatively an actuating member assigned to a clamping member, is provided with a feedthru bore which on correct locking and/or release of the corresponding clamping members is closed off at one end. The feedthru bores are connectable by a common connecting conduit to a compressed air source. In addition, at least one sensor is provided for sensing air flow in the connecting conduit by means of which it can detected whether the clamping members are correctly released or locked.
Abstract: A workholding chuck can use actuating members that pivot within a non-split unitary front bearing. The non-split unitary front bearing can include pockets in its central bore that can allow a spherical section of an actuator arm to be inserted into the bearing. The spherical section can include radially recessed areas to facilitate the insertion into the bearing. The jaws can be retained to the actuator arms through the use of a quick-release assembly. The quick-release assembly allows the jaws to easily and quickly be changed to allow the chuck to grasp different workpieces.
February 27, 2007
August 28, 2008
Brian J. Crowley, Charlie S. Carmoney, Thomas H. Dejonghe, Thomas M. Grobbel, William R. Stickney
Abstract: A deep throat chuck jaw system adapted to be used with a lathe with or without a headstock hole is provided. The system includes a set of jaw extension members having an inboard end supported from a face of a master chuck jaw coupled to a lathe chuck. The jaw extension members also include an outboard end. The set of jaw extension members are operable to grip an outer surface of a part having an outer diameter greater than the headstock hole with a clamping assembly clamped around the outboard end.
Abstract: An apparatus for adapting a workpiece holding device to a chuck of a machine tool includes a plurality of chuck locators configured for attachment to the chuck, such that the plurality of chuck locators includes at least three chuck locators. The apparatus further includes a mounting plate configured for attachment to the workpiece holding device. The mounting plate includes a body and a plurality of mounting plate locators corresponding to the plurality of chuck locators, such that the plurality of mounting plate locators are attached to the body and are configured to interface with the plurality of chuck locators.
Abstract: An actuated edge grip chuck includes tabs with raised portions that press against the side of a substrate as opposed clamping on the top or bottom surfaces. The edge grip chuck includes a solid-state actuator to move a moveable tab into an open position. The solid-state actuator may be, e.g., a piezoelectric actuator or a shape memory alloy. The tab may be biased into the closed position such that when a substrate is held by the edge by the moveable tab and one or more fixed tabs. If desired, more than one moveable tab may be used.
July 19, 2002
Date of Patent:
April 25, 2006
Blaine R. Spady, Christopher W. Blaufus, Douglas A. Page, Dan M. Colban
Abstract: A new and improved powered rotating turntable with a universal, self-adjusting chuck for holding auto wheels and the like for polishing, which includes a pneumatically-adjusted, self-centering metal chuck for gripping and holding specialty wheel rims of motor vehicles for polishing. The chuck is self-adjusting, self-centering and is able to handle any diameter of wheel. With the self-adjusting, self-centering capability, this chuck eliminates the need to set up a new jig for gripping and holding a wheel rim each time a series of rims having a different diameter or style from the last series of wheel rims previously chucked-up and polished, thereby greatly improving the efficiency of the entire wheel polishing operation in terms of both time and cost of operation.
Abstract: A work chucking/inserting device for chucking and inserting a work into an insertion hole (cylinder bore) in alignment with the hole, including three or more chuck fingers, the chuck fingers being arranged in circumferentially spaced positions and mounted for advancing and retracting radially. Inner surfaces of the chuck fingers serve as chuck surfaces for chucking the work, and outer surfaces of the chuck fingers are tapered at least at tip end portions radially inward toward the tips for contact with an inlet of the insertion hole. The work chucking/inserting device further includes a tracer mechanism which causes the axis of a conical surface defined by the outer surfaces of the chuck fingers to become aligned with the axis of the insertion hole when the outer surfaces of the chuck fingers contact the inlet of the insertion hole. A pushing mechanism is included for pushing the work toward the insertion hole.
Abstract: A new and improved wafer support for supporting wafers in a process chamber such as an edge bead removal (EBR) chamber. The wafer support comprises multiple wafer support units each including a gripper block that engages an edge portion or bevel of the wafer. The gripper block is attached to an engaging and disengaging mechanism for selectively causing engagement of the gripper blocks with the wafer to support the wafer and disengagement of the gripper blocks from the wafer to release the wafer for removal of the wafer from the chamber. The gripper blocks contact little or none of the surface area on the patterned surface of the wafer to prevent or substantially reduce the formation of contact-induced defects on the wafer.
Abstract: An apparatus for clamping a workpiece in a machine. The apparatus comprises an inner nose portion being rotatable about an axis of rotation and comprising a plurality of mounting surfaces, and, an outer ring portion rotatable about the axis of rotation and comprising at least one clamp operable between an unclamped position and a clamped position. In the unclamped position, the inner nose portion is rotationally positionable about the axis relative to the clamp such that a workpiece positioned against the mounting surfaces may be oriented relative to the clamp to a position at which with the clamp being operated to the clamped position, the workpiece is clamped against the mounting surfaces. The clamping results in a coupling of the inner nose portion and the outer ring portion whereby with a clamped workpiece, the inner nose portion and the outer ring portion are rotatable together and are positionable about the axis.
June 24, 2003
March 18, 2004
Michael G. Regna, Sean C. Woodyard, Eric G. Mundt
Abstract: A gripping device that engages and disengages an inserted workpiece with an essentially perpendicular engagement action thereby eliminating any sliding contact with the workpiece. Such perpendicular and non-sliding engagement is achieved through the action of a plurality of gripping fingers driven by a spherical ball and hinged inside of a chuck housing that guides the fingers in a substantially perpendicular motion relative to the engaged surface during engagement and disengagement. Engagement with a workpiece is achieved by the simple action of compressing a spring retained outer casing and releasing the outer casing once the workpiece has been placed-within the gripping range of the internal fingers.
Abstract: A chuck apparatus including a chuck, and a power-driven device which selectively places the chuck in an object-hold state thereof in which the chuck holds an object, and an object-release state thereof in which the chuck releases the object, the power-driven device including, as a power source thereof, an electric motor.
Abstract: A holding device includes a support frame; multiple pairs of holding fixtures mounted on the support frame; a holding fixture pulley attached to one holding fixture of each one pair of holding fixtures; at least one frame pulley attached to the support frame; a drive rope bridging between the holding fixture pulley and the frame pulley and having one end pulled in one direction and the other end fixed to the support frame; and a drive source that pulls the drive rope. With this configuration, when the drive rope is pulled by the drive source, holding fixtures constituting each one pair of holding fixtures are linked to move symmetrically to each other in a direction that holds an object to be held, each one pair of holding fixtures move independently of other pairs of holding fixtures, and the holding fixtures of each one pair of holding fixtures are movable toward and away from each other on a straight line or on two parallel straight lines on a plane of the support frame.
March 19, 2002
Date of Patent:
September 2, 2003
National Institute of Advanced Industrial Science and