Abstract: A support system (1) for a horological component (9), in particular for a horological component comprising a surface (91) generated by revolution and/or an axis (A9), includes a positioning device (2), in particular a centering device, for the horological component (9) in relation to an axis (A) of the system, and a holding device (3) for the horological component (9), the positioning device and holding device being independent and/or different and/or distinct.

Abstract: An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

Abstract: An orthopedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

Abstract: A coupler for removeable coupling an object to a support. The coupler includes a cover, a ring, and a base. The cover couples to the support. The ring includes a first arm, a second arm, a third arm, a fourth arm, a first stop, and a second stop. Each arm of the ring is formed of a resilient material. The ring is positioned in a cavity of the cover. The base couples to the accessory. The base cooperates with the cover and the ring to couple to the cover and to rotate from a decoupled position to an intermediate position and further to a clocked position.

Abstract: A drill chuck has a chuck body having a plurality of angularly spaced and axially extending but angled guide grooves each holding a jaw that is axially displaceable between an axially front closed position and an axially rear open position. Each jaw has an outer edge formed with external teeth, and also has an axially rearwardly directed rear face extending at an acute angle to a plane perpendicular to the axis. A ring rotatable on the body about the axis has an internal screwthread meshing with the teeth, and an adjustment sleeve rotationally coupled to the ring is rotatable to move the jaws between the open and closed positions. A cover disk on the rear end of the body is formed with respective throughgoing chip-discharge holes each having an inner end aligned with a respective one of the grooves and an outwardly open outer end.

Abstract: Provided is a grinding method capable of preventing variation in the outer diameter of a processed object 1 at the completion of grinding regardless of change in the amount of elastic deformation of the processed object 1 based on the change in the cutting ability of a grindstone 4. The outer diameter D of the processed object 1 during grinding is measured by gauge heads 5 in process. Plural target values Di that differ from each other are set for the outer diameter D of the processed object 1, and first threshold values are set for the rate of change of the outer diameter D of the processed object for each of these target values Di. Spark out is started when the outer diameter D of the processed object 1 becomes equal to a target value Di and the absolute value of the rate of change v is greater than a first threshold value that corresponds to the target value Di.

Abstract: The present invention relates to a substrate gripping apparatus includes a base, a plurality of support posts which are vertically movable relative to the base, a lifting mechanism configured to lift the support posts, and a substrate holder and a substrate guide member mounted to each of the support posts. Each of the support posts includes a relative movement mechanism configured to move the substrate holder in such a direction that the substrate holder releases a peripheral portion of a substrate, while raising the substrate guide member relative to the substrate holder, when the support post moves upward, and to move the substrate holder in such a direction that the substrate holder grips the peripheral portion of the substrate, while lowering the substrate guide member relative to the substrate holder, when the support post moves downward.

Abstract: An apparatus and method according to one or more embodiments are provided for a tool that guides a drill in drilling a hole at an angle substantially perpendicular to a non-planar work surface. The tool may be implemented, for example, as a portable drill assist tool that rests unsecured on a non-planar work surface substantially perpendicular to a target hole formed within the non-planar work surface. In one example, an apparatus includes a main body having a through hole formed therein. The through hole is configured to receive a drill bushing and an alignment pin. The apparatus further includes at least three legs configured to independently translate relative to the main body to contact the non-planar surface and maintain the through hole substantially perpendicular to the non-planar work surface when the alignment pin is passed through the drill bushing and into the target hole.

Abstract: The present invention relates to an electric motor and an electric power steering apparatus including the same. According to an embodiment of the present invention, problems such as a malfunction of an electric motor, damage to a component of the electric motor, and lowering of an output of the electric motor can be solved by preventing penetration of foreign substances into the electric motor, so that a steering stability of a vehicle can be improved.

Abstract: A shaft tool for machine tools, has a shaft, a tool head disposed at a shaft end and equipped with at least one cutting element, and a coupling element disposed at the other shaft end for direct or indirect connection to a machine spindle. A peripheral groove extends along the circumference of the shaft and is open radially, and at least one spreading element engages in the peripheral groove and can be radially adjusted therein, resulting in the exertion of spreading and bending forced onto the groove flanks. The peripheral groove is filled with a filler material at least in the area of the spreading element, the filler material having both a sealing function against contaminants and a damping function. The filler material also acts as a rotation prevention for the spreading elements.

Abstract: The invention relates to a clamping fixture comprising a chuck (1) and for locking thereto a workpiece pallet (2). The chuck (1) comprises first centering members in the form of centering spigots (5) whilst said workpiece pallet (2) is provided with a main body (20) and secured thereto a centering disk (23). The centering disk (23) is provided with second centering members in the form of centering openings (24). The centering spigots (5) of the workpiece pallet (2) are adapted to the centering openings (24) of the workpiece pallet (2) that the latter is alignable in the X-direction and Y-direction on clamping to the chuck (1). Provided topping the chuck (1) is a sealing member assembly (7). Disposed between the centering disk (23) and the main body (20) of the workpiece pallet (2) is a sealing disk (21) which overhangs the centering disk (23) radially.

Abstract: A device for locating and engaging a notch on the perimeter of a circular wafer includes a notch locating component and a first plate. The notch locating component is configured to move linearly along a first axis and includes a front elongated component extending along a second axis perpendicular to the first axis and having a front surface, a back surface opposite to the front surface and a first protrusion extending from the front surface of the elongated component. The first protrusion has a shape complementing the shape of a notch formed on the perimeter of a circular wafer. As the notch locating component is driven toward the perimeter of the circular wafer along the first axis, a distance between the back surface of the elongated component and a front surface of the first plate is measured and the value of the measured distance is used to determine engagement of the first protrusion with the notch.

Abstract: A pottery holding device and method for securely holding a workpiece during rotation and working of the workpiece on a wheelhead of a pottery wheel. The pottery holding device includes a wheelhead member and at least three holding members. The wheelhead member configured for attachment to the wheelhead of a pottery wheel. The at least three holding members and wheelhead member configured to allow selective locking of the at least three holding members in positions about the periphery of a workpiece. The device adapted to securely hold circular, non-circular symmetric and irregular, asymmetric or organic shaped workpieces. The device further adapted to securely hold workpieces in positions and orientations such that the center of the workpieces is aligned with the axis of rotation of the device, and positions and orientations such that the center of the workpieces is spaced from the axis of rotation of the device.

Abstract: The present invention relates to a substrate gripping apparatus includes a base, a plurality of support posts which are vertically movable relative to the base, a lifting mechanism configured to lift the support posts, and a substrate holder and a substrate guide member mounted to each of the support posts. Each of the support posts includes a relative movement mechanism configured to move the substrate holder in such a direction that the substrate holder releases a peripheral portion of a substrate, while raising the substrate guide member relative to the substrate holder, when the support post moves upward, and to move the substrate holder in such a direction that the substrate holder grips the peripheral portion of the substrate, while lowering the substrate guide member relative to the substrate holder, when the support post moves downward.

Abstract: A lower side coupling of a Hirth coupling is coaxially coupled and fixed to a spindle, an upper side coupling of the Hirth coupling is coaxially coupled and fixed to a lower rim, the upper side coupling of the lower rim is meshed with the lower side coupling of the spindle, and upward separation of the lower rim from the spindle is prevented by chuck mechanisms.

Abstract: A device for centering circular wafers includes a support chuck for supporting a circular wafer to be centered upon its top surface, left, right and middle centering linkage rods and a cam plate synchronizing the rectilinear motion of the left, right and middle centering linkage rods. The left centering linkage rod includes a first rotating arm at a first end and rectilinear motion of the left centering linkage rod translates into rotational motion of the first rotating arm. The right centering linkage rod comprises a second rotating arm at a first end, and rectilinear motion of the right centering linkage rod translates into rotational motion of the second rotating arm. The first and second rotating arms are rotatable around an axis perpendicular to the top surface of the support chuck and comprise a curved edge surface configured to roll against the curved edge of the circular wafer. The middle centering linkage rod includes a third alignment arm at a first end.

Abstract: A tool attachment has: a mounting unit for mounting on a mounting interface of a hand-held machine tool; and a centering aid provided on the mounting unit for axially centering the mounting unit on the mounting interface.

Abstract: A quick-change top tooling system is provided to accommodate various sized and configurations of workpieces to be chucked. The quick-change top tooling system includes a chuck body, at least one jaw assembly, and at least one workstop assembly. The jaw assembly comprises a master post fixed to a surface of the chuck body and a jaw releasably coupled to the master post. The workstop assembly comprises a workstop base mounted to the surface of the chuck body and a workstop releasably coupled to the workstop base. The at least one jaw and workstop may engage and clamp a workpiece to be chucked to maintain the concentricity and parallelism of the workpiece.

Abstract: Provided is a positioning apparatus including: a reference member that is serving as a reference for positioning; a support part that supports the reference member; and a first fixing member provided on the support part that fixes the reference member and the support part or releases the fixing. The reference member is connected to the support part in a movable state and fixed to the support part by the first fixing member after a position is determined. The reference member of the positioning apparatus is precisely installed to a reference position.

Abstract: The chuck includes a centering clamping member having a variable diameter, a radially extending clamping surface, which is adjacent to the centering clamping member, a movable clamping element, a first spring element, via which the centering clamping member can be moved into a clamping position, a second spring element, via which the clamping element can be loaded with a first force, a third spring element, via which the clamping element can be loaded with a second, higher force, and an axially movable actuating device by which the centering clamping member and the clamping element can be moved into a release position against the force of the first and third spring elements.

Abstract: The present invention relates to a tool holder that either has a modular design, and the modules of which are centered via interfaces, or/and in which a centered interface is provided between the tool and the tool receiver such that high concentricity, and thus a high processing accuracy are achieved. The present invention further relates to a system comprising a tool holder and a tool.

Abstract: The chuck includes a centering clamping member having a variable diameter, a radially extending clamping surface, which is adjacent to the centering clamping member, a movable clamping element, a first spring element, via which the centering clamping member can be moved into a clamping position, a second spring element, via which the clamping element can be loaded with a first force, a third spring element, via which the clamping element can be loaded with a second, higher force, and an axially movable actuating device by which the centering clamping member and the clamping element can be moved into a release position against the force of the first and third spring elements.

Abstract: The invention concerns a securing device for securing a chuck, in particular a power-operated chuck, on a rotating spindle of a machine, wherein a rotating element and at least one chucking-slide assembly are provided in a main body in such a way that, when the rotating element turns, the chucking-slide assemblies change their radial position such that, in a chucking position, they force the chuck against the securing device in the axial direction.

Abstract: The method includes the steps of positioning a workpiece with a centering surface on a centering clamping member of a chuck, pressing a radial contact surface of the workpiece against a clamping surface of the chuck with a first force, centering the workpiece by clamping the centering clamping member against the centering surface, and pressing the radial contact surface of the workpiece against the clamping surface of the chuck with a second force, the second force being greater than the first force.

Abstract: A setting mechanism for a settable tool holder adapter includes a differential screw having two thread portions of differing pitch but identical direction of hand and a pressure piece having a pressure piece thread. One of the thread portions of the differential screw is screwed into the thread of the pressure piece.

Abstract: A rotary tool includes a collet which in one embodiment includes a bit holder defining a shank receiving bore, a transfer member for transferring rotational force from the bit holder to the shank of an accessory, and a centering member positioned within the bit holder and configured to automatically grip the shank when the shank is positioned within the shank receiving bore.

Abstract: The present invention discloses an integrated PMOS transistor and Schottky diode, comprising a PMOS transistor which includes a gate, a source, a drain and a channel region between the source and drain, wherein the source, drain and channel region are formed in a substrate, and a parasitic diode is formed between the drain and the channel region; and a Schottky diode formed in the substrate and connected in reverse series with the parasitic diode, the Schottky diode having one end connected with the parasitic diode and the other end connected with the source.

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 floating chuck mechanism provided at a workhead that is arranged at a processing apparatus for sandwiching a cylindrical-shaped workpiece by means of two center members along a rotational axis, the floating chuck mechanism causing the workpiece to rotate about the rotational axis and correcting an eccentricity between the rotational axis and a center of an outer diameter of the workpiece, includes a chuck body portion including plurality of clamp jaws for holding the workpiece from the outer peripheral side thereof, and a chuck base portion fixed to the workhead so as to rotate therewith, the chuck base portion including a fixed portion fixed to the workhead and a slide portion slidable along a slide surface perpendicular to the rotational axis. The chuck body portion is fixed to the slide portion and sliding along the slide surface so as to correct the eccentricity.

Abstract: A chuck device is disclosed having two or more jaws for gripping an object, and an adjustment mechanism for adjusting the rotational centre of the object gripped in the jaws. The adjustment mechanism can have two adjusting devices, which can adjust the position of the rotational centre of the gripped object after it has been gripped in the chuck, and optionally a sensor mechanism for detecting the position of the object gripped within the jaws. The chuck device can typically sense the actual rotational centre of the gripped device at the location to be cut, by obtaining the measurement information from the sensor devices, and can then move the rotational centre of the jaws gripping the object to ensure that the object is centred at the position to be cut, and not necessarily at the chuck.

Abstract: A gripping device comprises a support frame defining an axially extending internal space for receiving a part that is to be gripped and a plurality of jaws carried by the support frame. The jaws each have an end face and are connected with the support frame such that an axially directed force applied to the end faces causes axially and radially inward movement of the jaws for gripping a part received in the internal space.

Abstract: The present invention relates to a machine tool for machining of workpieces, having a workpiece support for mounting the workpiece, a tool holder, which can be moved at least along one axis, for holding a tool for machining the workpiece, and workpiece holding units for fixing the workpiece during the machining, the workpiece holding units being arranged outside the workpiece support surface of the workpiece support, which is covered by the workpiece in the mounted state, and each having a holding element for fixing the workpiece. In order that also workpieces of greater diameter can be machined, the machine tool otherwise being of the same dimensions, it is provided according to the invention that the holding elements can each be moved, substantially parallel to the workpiece support surface, in the direction of the workpiece, in particular in the direction of a central workpiece axis, which runs perpendicular to the workpiece support surface, for the purpose of centering and fixing the workpiece.

Abstract: A process and apparatus for centering accurately and speedy a workpiece on a magnet chuck mounted on a work spindle. A pair of action pads spaced away from one another comes into engagement with the workpiece attracted to the work spindle, thereby performing the centering operation. The action pads are mounted on a support plate that can freely turn on a fulcrum. As the fulcrum makes head towards a rotational center of the magnet chuck, the action pads comes into abutment in a rocking manner against the workpiece that is held at off-center relation in the chuck, thereby compensating the off-center relation to keep a center of the workpiece in alignment with the rotational center of the chuck.

Abstract: A workpiece centering apparatus 1 is provided on a lathe having a spindle 33, an independent chuck 34, and upper and lower tool rests 37, 41, and has sandwiching members 11, 12 mounted to the tool rests 37, 41, respectively, and capable of contacting the outer peripheral surface of a workpiece W, and a centering control section 15 for moving the tool rests 37, 41 and thereby moving the sandwiching members 11, 12 to their respective centering positions which are the positions of the sandwiching members 11, 12 when the center position of a portion to be machined of the workpiece W coincides with the axis of the spindle 33 in a state where the portion to be machined of the workpiece W is being sandwiched and held by the sandwiching members 11, 12, and then causing the independent chuck 34 to grip the workpiece W.

Abstract: The clamping apparatus comprising a chuck member and a pallet member releasably fixed to the chuck member. The chuck member comprises clamping means for clamping the pallet member to the chuck member. The chuck member has first centering means and the pallet member has second centering means cooperating with the first centering means to define the relative position between the chuck member and the pallet. The chuck member and/or the pallet member are/is provided with at least one damping element consisting at least partially of a compressed composite of metal chips.

Abstract: A chuck has a generally cylindrical body member having a nose section and a tail section. The tail section is configured to mate with the drive shaft so that the body rotates with the drive shaft. The nose section has an axial bore formed therein and a plurality of jaws is slidably positioned to engage a bit within the axial bore. Each of the jaws has a bit engaging jaw face formed thereon. One or more centering members are disposed adjacent to the jaws. The members are deformable from a first position where the members define a through passage configured to accept a bit, which has a drive shaft diameter less than a predefined diameter. The members are further configured to be deformable to a second position upon the insertion of a bit, which has a diameter greater than the predefined diameter, into the axial bore.

Abstract: An exchanging device is for exchangeably holding a sensor, probe element or tool on a machine or on a machine part or a rotation-pivot unit on a machine or a machine part, preferably, a coordinate measuring apparatus. The exchanging device includes a take-up holder having a first bearing part and a counter piece (22) having a second bearing part corresponding to the first bearing part. A releasable clamping unit (42), for example, a magnetic clamping unit, is provided with which a clamping force is generated between the first and second bearing parts when the counter piece is accommodated on the take-up holder. A locking device having a first locking element (29) is provided on the take-up holder and a counter piece corresponding to the locking element (29) of the take-up holder is provided on the counter piece (22), for example, in the form of a slider (30). With the locking device, the counter piece can be mechanically coupled to the take-up holder in the state when it is taken up by the take-up holder.

Abstract: The method includes the steps of positioning a workpiece (50) with a centering surface (51) on a centering clamping member (32) of a chuck (1), pressing a radial contact surface of the workpiece against a clamping surface (27) of the chuck (1) with a first force, centering the workpiece (50) by clamping the centering clamping member (32) against the centering surface (51), and pressing the radial contact surface (52) of the workpiece (50) against the clamping surface (27) of the chuck (1) with a second force, the second force being greater than the first force.

Abstract: A transmission apparatus includes a frame, a rotating disk fitted on the frame, platforms on the rotating disk, an inner rotating member fitted on the frame, a clutch, and an actuating mechanism for moving the clutch; the platforms have clamping jaws for clamping a work piece; the clutch is joined to the inner rotating member, and can be engaged with and disengaged from a transmission gear rotated with a power source; after one of the platforms is secured to the inner rotating member, the actuating mechanism will exert force to separate the clutch from the transmission gear, and the clamping jaws clamp the work piece, and next the clutch is engaged with the transmission gear; thus, the power source causes rotation of the transmission gear, the clutch, the inner rotating member, and said working platform so as to test whether the work piece is positioned in balanced position.

Abstract: A device and a method are disclosed for centrally tightening rotatingly drivable parts. The device comprises at least three units for clamping and adjusting a part, wherein at least two of the units comprise an actuator allowing controlled adjustment in radial direction according to a control value. A measuring device is provided to detect deviations of the part from concentricity with respect to a rotary drive axis. A computer is used for controlling the actuators to effect concentricity of the part, the computer being responsive to deviations from concentricity detected by said measuring device.

Abstract: The present invention relates to a low-vibration tool holder (1) with a tool holder base body (2, 3, 4, 6) and a tensioning arrangement (5) which provides axial tensioning of the tool holder base body (2, 3, 4, 6) and which is simultaneously tensioned in a radially flexible way with respect to the tool holder base body (2, 3, 4, 6). This tool holder (1) is less susceptible to vibration than previously known tool holders, which ensures better true running even during operation and in particular when heat-induced expansion of materials occurs, since the clamping arrangement (5) which is integrated in the tool holder (1) is continuously centered with respect to the tool holder base body (2, 3, 4, 6). Furthermore, such a tool holder (1), in particular within a modular design, can be adapted very flexibly to different types of tools and workpiece machining processes.

Abstract: A method for machining a workpiece in which a machine tool comprising a first and a second chuck devices is employed to machine the workpiece, the machine tool being used in which the first and the second chuck devices comprise a chuck main body, plural chuck jaws, a chuck jaw drive body, and a pressing member, the method comprising: machining a clamp part of the other end part of the workpiece in a state where one end part of the workpiece is clamped by the first chuck device; machining a clamp part of the one end part of the workpiece in a state where the clamp part of the other end part of the workpiece is clamped by the second chuck device; and executing desired machining on the workpiece in a state where each of the clamp parts are clamped by each of the chuck devices.

Abstract: A method of processing a vehicle wheel/rim preform with a centersection/spider and an annular wall extending around a first rotational axis and having an annular surface defining axially spaced, annular inboard and outboard bead seats. The method includes the steps of: providing a workpiece support having a chuck assembly that is rotatable around a second axis and at least one rim wall support assembly; engaging the chuck assembly with the centersection/spider to maintain the vehicle wheel/rim preform in a processing position; engaging the at least one rim wall support assembly with the annular wall to exert thereon a force with a radial component to thereby stabilize the wheel/rim preform; and processing the vehicle wheel/rim preform at the annular surface fully axially between the inboard and outboard bead seats.

Abstract: An apparatus to facilitate the boring of holes through obstructions when installing pipes.

Abstract: An improved aiming tube pivot assembly for use in a sighting and/or aiming apparatus which comprises an aiming tube axially mounted within an outer tube (or housing). A support ring supports the aiming tube within the outer tube in a gimbal-like arrangement by means of ball bearings and set screws. The ball bearings are secured intermediate the aiming tube and the support ring via apertures in the outer tube. The set screws are threadedly mounted in the support ring and engage the outer surface of the outer tube. A movable cover tube can be mounted on the outer tube and substantially encloses the end of the outer tube and the support ring.

Abstract: The clamping apparatus comprises a chuck member and a pallet releasably attachable thereto. The chuck member has four centering grooves, arranged offset to each other by 90° around the central Z-axis, while the pallet has four correspondingly located centering pins. In each of the four centering grooves, one of the groove flanks serves for centering the associated centering pin of the pallet, while the other groove flank is constituted by a clamping member. Upon clamping the pallet to the chuck member, the associated clamping member engages a recess provided on the centering pin and pulls the latter one in Z-direction into the centering groove of the chuck member. Simultaneously, the clamping member also presses the centering pin against the other groove flank. Thereby, the pallet is positioned relative to the chuck member in X-, Y- and Z-directions and clamped to the chuck member.

Abstract: A drill includes a chuck which has a body member including a bore to receive a tool. Jaw members frictionally engage the tool to retain the tool in the chuck. A member is associated with the jaw members and the body to move the jaw members between clamping and non-clamping position. A centering mechanism extends radially into the body member to center tool bits within the chuck while prohibiting the tool bit from contacting the bore wall.

Abstract: There is provided a locator device and an associated fixture and method for supporting a rotatable member. The locator device has a base and a plurality of flanges extending from the base in an axial direction and arranged circumferentially to define an aperture for at least partially receiving the rotatable member axially. The flanges defining slots for receiving radial portions of the rotatable member with the radial portions extending radially outward from the flanges. Thus, the locator device can support boreless rotatable members so that a tool can be supported against the radial portions of the rotatable member to thereby form the rotatable member to predetermined dimensions.

Abstract: A computer controlled positioning table for use in automatically rotating a large diameter article into which an evenly spaced circle of bolt holes are to be drilled. The article to be drilled is centered and clamped onto a table top of the table and then the computer rotates the table top incrementally to precisely position the article relative to an associated stationary drill stand that is used to drill the desired holes in the article. Rotation of the table top is computer controlled, allowing the operator to select the number of bolt holes for each article. Once the table top has rotated to the proper position, locking mechanisms and support roller provided under the table top hold the table top stationary in the proper position while a hole is drilled in the article.

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.