Abstract: A disk hub is configured to retain a magnetic recording medium including an annulus shape and a layer configured for magnetic recording. The disk hub includes a base plate portion for supporting an inner diameter area of the magnetic recording medium and a stem portion on the base plate portion. The stem portion includes a frustoconical portion on the base plate portion and a top portion on the frustoconical portion. At least the top portion of the stem portion includes a material with a hardness less than that of stainless steel. The disk hub can reduce surface damages (e.g., scratches) on the media surface during media testing.

Abstract: A balancing adapter for a balancing device has a clamping device for clamping a workpiece. The clamping device has a clamping sleeve element with a clamping sleeve, and a clamping element that can be moved relative to the clamping sleeve element. The clamping sleeve has a taper, and the clamping element has a mating taper corresponding to the clamping sleeve taper. The clamping diameter of the clamping sleeve can be adjusted, and thus a workpiece can be clamped, by moving the clamping element relative to the clamping sleeve element. The clamping sleeve element is releasably connectable to a base body of the balancing adapter. Accordingly, for connection to the base body, the clamping sleeve element has an annular flange by which, in the connected state of the clamping sleeve element and the base body, the clamping sleeve element rests on an end wall of the base body.

Abstract: A slotting tool body includes a disc-like cutter portion including opposing forward and rearward cutter portion side surfaces and a cutter portion peripheral surface extending therebetween and a shank portion projecting rearwardly from the rearward cutter portion side surface. The cutter portion includes a number N of angularly spaced apart clamping portions, each having a peripherally disposed insert receiving slot. The cutter portion further includes a flexibility recess recessed in the forward cutter portion side surface and extending to each of the insert receiving slots. A cutting insert is releasably and resiliently clamped in each insert receiving slot to form a rotary slot cutting tool.

Abstract: Provided is a rotating body, including: a shaft; an impeller (compressor impeller) having an insertion hole, which passes through the impeller in an axial direction of the shaft and is configured to receive one end side of the shaft inserted therethrough; an axial-end hole, which is formed in the shaft, is opened at one end of the shaft, and extends to a radially inner side of the insertion hole in the axial direction of the shaft; a radial-expansion member arranged in the axial-end hole; and a tubular wall portion, which forms the axial-end hole, and is configured to press an inner peripheral surface of the insertion hole.

Abstract: A machining jig holds a workpiece with respect to a tool when machining the workpiece with the tool, the workpiece including a ridge that projects from an outer periphery of a cylindrical section in a radial direction and that extends so as to intersect a peripheral direction. The machining jig includes a holding jig that includes a cylindrical body section that is disposed at an outer periphery of the workpiece and a stopping section that projects inwardly from the body section and that stops a face of a surface of the ridge on a side where the tool leaves a processing portion of the ridge; and a coaxial base that is coaxial with the holding jig and to which the holding jig is coaxially fixed.

Abstract: A gripper head for use in gripping a seal and positioning the seal in an electrical terminal. The gripper head has a mounting section, a compliant section and a gripping section. The compliant section extends from the mounting section. The compliant section has compliant legs having fixed ends proximate the mounting section and free ends. The compliant legs are spaced apart by compliant section slots. The gripping section extends from the compliant section. The gripping section has gripping legs which extend from the compliant legs. The gripping legs are spaced apart by gripping section slots. As the gripper head is moved into engagement with the seal, the gripping legs and the compliant legs are resiliently deformed causing the compliant legs and the gripping legs to apply a force to the seal to retain the seal on the gripping section of the gripper head.

Abstract: A work support and method of clamping a translatable component of a hydraulic work support system. The work support may include a rigid, hollow slotted collet, a sleeve, and the translatable component, such as a plunger or rod. Hydraulic fluid may be pumped into an inlet of the hydraulic work support system to hydraulically actuate the translatable component outward from a first retracted position to a second extended position. The hydraulic fluid may further be pumped to the sleeve at a sufficient pressure that the sleeve presses against the collet. The collet responds thereto by flexing into contact with the translatable component, thus holding the translatable component in the second extended position. The slots in the collet allow for flexure even when using a thicker material with stronger column strength.

Abstract: The invention discloses a precision fixture for improving the balance precision of a wheel, comprising a chuck, a base, a servo motor, a lower pressure plate, a rubber strip, steel balls, an upper pressure plate, a mounting plate, a connecting shaft, a shaft sleeve, a hydraulic cylinder, a bearing end cover, bearings, a guard, an expanding core, expanding flaps, a flange plate, springs, pins, a flange, a connecting shaft and limiting columns. The fixture can meet the requirement for improving the balance precision of a wheel, at the same time, has the characteristics of simple structure, convenient manufacture, stable performance and precision that can meet the machining requirement, and can meet the requirements of automatic production.

Abstract: An anchor comprises a substantially non-conducting housing including a series of collet apertures; flexible strands; collets; and a water bed engaging part. Each collet is adapted to engage one of the flexible strands and secure it in a respective one of the collet apertures of the housing. The anchor formed such that when it is in use the water bed engaging part can be located on the bed of a body of water with the strands extending upwards for use in securing an item at or near the surface of the water, the strands being able to expand and contract lengthwise to resist breaking due to pulling of the item.

Abstract: The present invention provides a work piece chuck of manipulator in the field of mechanical technology. The chuck comprises a chuck sleeve and an ejector pin set within the chuck sleeve. An elastic clamping element is provided at the front end of the chuck sleeve. The ejector pin could move between a first position and a second position along the axial direction of the chuck sleeve. When the ejector pin is in the first position, the outer circumference of the ejector pin extrudes the clamping element to distort and expand outward to form an expansion state. When the ejector pin is in the second position, the outer circumference of the ejector pin is out of contact with the clamping element to restore the clamping element. The chuck has a number of advantages including firm connection, high reliability and high use value.

Abstract: An exchangeable head cutting tool contains a tool main body made of a hard material and a connecting member made of a metal material having a lower hardness than the hard material. The tool main body and the connecting member are joined by inserting a cylindrical mounting portion of the connecting member into a mounting hole formed in the tool main body, and by plastically deforming the mounting portion so as to expand a diameter thereof, thereby bringing an outer peripheral surface of the mounting portion into close contact with the inner peripheral surface of the mounting hole and thus making the outer peripheral surface of the mounting portion engage with a concave portions of the tool main body. A diameter expanding member having a higher hardness than the connecting member is press-fitted into and fixed to an inner peripheral portion of the mounting portion.

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 clamp holds two members together. The first member includes a recess into which a fastener is located. A bore is provided to the recess to allow a tool to be used to operate the fastener. The second member is arranged to accept the fastener and so join the members. The recess and bore are sized to prevent release of the fastener through the bore. In this way, the fastener cannot easily be removed or lost when the clamp is in use and is tamperproof. The clamp is used to hold portions of a sleeve around a body of the tool, and to hold scraper blades and/or brushes to the body.

Abstract: In a shank portion of an end mill which is chucked by a tool holder, flat surfaces are formed at a plurality of circumferential positions in the outer periphery of the shank portion so that the flat surfaces abut on side lock bolts attached to a body of the tool holder.

Abstract: A clamping fixture for clamping a component, in particular a workpiece or tool, having a number of clamping jaws, distributed along a periphery, which are connected by appropriate elastic flexural webs to a main body, wherein the clamping jaws are adjustable by an axially movable actuating device in a radial direction from a release position into a holding position, which clamping fixture is characterized in that the flexural webs, in their release position, are inclined in relation to an axially parallel direction radially in a direction of their respective holding positions.

Abstract: The present invention provides a work piece chuck of manipulator in the field of mechanical technology. The chuck comprises a chuck sleeve and an ejector pin set within the chuck sleeve. An elastic clamping element is provided at the front end of the chuck sleeve. The ejector pin could move between a first position and a second position along the axial direction of the chuck sleeve. When the ejector pin is in the first position, the outer circumference of the ejector pin extrudes the clamping element to distort and expand outward to form an expansion state. When the ejector pin is in the second position, the outer circumference of the ejector pin is out of contact with the clamping element to restore the clamping element. The chuck has a number of advantages including firm connection, high reliability and high use value.

Abstract: An expandable arbor for rotatably mounting an object to a machine tool comprises a mounting portion fastenable to a machine tool spindle and a clamping portion located on the mounting portion. The clamping portion comprises a finger extending from the mounting portion, an expandable sleeve coupled to the finger, and a nut for coupling the expandable sleeve to the mounting portion and for coupling the mounting portion to the rotating spindle. The expansion of the expandable sleeve allows for the clamping of the expandable sleeve to an internal surface of a tool or workpiece.

Abstract: An expandable arbor for mounting a tool or work piece to a machine tool includes a mounting portion including a tubular section having conical exterior surface flaring outwardly towards a substantially closed end thereof. The arbor includes an opposing end having a plug removably disposed therein. The closed end has a finger extending axially therefrom. The mounting portion is configured to be rotatably coupled to a machine tool spindle and defines a keyway configured on a portion of an outer surface thereof. The arbor includes a clamping portion comprising an expandable sleeve slidably positioned over the finger. The finger is axially movable relative to and within the expandable sleeve. A nut is positioned over a portion of the expandable sleeve for axially retaining the expandable sleeve relative to the machine tool and allowing radial movement of the expandable sleeve.

Abstract: An arbor of a machine tool has a collet arbor base, an expandable and releasable collet having a top band coupled to a bottom band, an actuator pin slidable from the collet arbor base arranged concentrically within the collet and having a reverse male taper on an upper end thereof that actuates the top band of the collet, and a conical ring with a taper angle matching the upper end of the actuator pin arranged proximate a lower part of the actuator pin concentric therewith, wherein the reverse male taper at the upper end of the actuator pin activating the top band and the conical ring having a matching taper activating the bottom band of the collet cause the collet to expand and retract accordingly.

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 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 hydrostatic testing tool for testing containers, hoses or the like under high pressures. The testing tool having a coupling that threadably engages a threaded aperture of a test container without having to be rotated into the threaded aperture. The hydrostatic testing tool may be hooked up to a source of pressurized medium and the tool includes a container-engaging head having a plurality of collet segments that each have a threaded surface that can expand radially outward, partially due to the force of the pressurized medium, to engage a threaded aperture of the test container, allowing for the formation of a liquid and/or gas tight seal under high pressures. The testing tool further includes an actuating unit connected to the head that controls the movement of the collet segments with a piston or the like.

Abstract: A chuck holds a disk by the inside diameter with a plurality of contact surfaces at the end of fingers. Axial motion of an actuator is translated into outward radial movement of the fingers to place the contact surfaces in contact with the inside diameter of the disk. The force that is applied to the disk is limited to reduce or eliminate warping or curvature of the disk, e.g., a sleeve that surrounds the fingers can be used as a hard stop to physically limit the range of outward radial movement of the fingers.

Abstract: A side actuated collet lock mechanism includes a collet; a drawbar at least partially disposed within the collet, and a pair of wedge members threadingly received onto each end of a double-ended drive screw. The drive screw is rotated to cause the wedge members to move downward such that a first cam surface engages the drawbar. The drawbar and collet are pulled into the tool holder and firmly secure the shank. To remove the shank, the drive screw is rotated in an opposite direction to cause the wedge members to move upward such that a second cam surface engages the drawbar. The drawbar and the collet are pushed out from the toolholder, thereby releasing the shank.

Abstract: A hand tool for a craft knife has a handle, a blade tray and a connector. The handle has a mounting chamber, a mounting tube, a cap, a socket bit and an ejector tube. The blade tray is mounted in the mounting chamber and the mounting tube of the handle and has a base and a casing. The base has two mounting protrusions formed on an internal surface of the base. The casing is pivotally mounted in the base and has two mounting holes and a blade chamber. The connector is detachably connected to the handle and has a socket bar, a clamping tube and a pressing tube. The socket bar is detachably mounted in the socket bit. The clamping tube is mounted securely in the socket bar. The pressing tube is mounted around the clamping tube and presses against the socket bar and the clamping tube.

Abstract: A collet assembly that holds two disks to be processed simultaneously uses alternating pressure zones to press against the inner diameter of the disks to hold them in place in a processing machine. While the disks to be processed are typically media disks, any type of disk processing can make use of the collet assembly of the present invention. Each pressure zone includes a contact surface on a chuck blade. When a travel stroke is initiated by an actuating device (typically an air cylinder), the drawbar pulls an angled expander rearward. The expander urges the chuck blades outward. Half of the pressure zones apply pressure (via the contact surfaces on the chuck blades) to the first disk, while the other half of the contact surfaces press against the second disk, so that both disks are held securely in position.

Abstract: An apparatus and associated method is provided for precisely positioning a datum surface of a component. The apparatus has a housing defining a tooling datum surface. A collet is supported by the housing that is selectively operable between a retracted mode and an expanded mode. In the retracted mode a clearing disengagement is defined with the component. In the expanded mode a contacting engagement with the component is defined. The contacting engagement and a simultaneous longitudinal force transferred by the contacting engagement to the component pressingly engage the datum surfaces together. The apparatus further has a bias member exerting the longitudinal force and urging the collet to the retracted mode.

Abstract: A collet assembly that holds two disks to be processed simultaneously uses alternating pressure zones to press against the inner diameter of the disks to hold them in place in a processing machine. While the disks to be processed are typically media disks, any type of disk processing can make use of the collet assembly of the present invention. Each pressure zone includes a contact surface on a chuck blade. When a travel stroke is initiated by an actuating device (typically an air cylinder), the drawbar pulls an angled expander rearward. The expander urges the chuck blades outward. Half of the pressure zones apply pressure (via the contact surfaces on the chuck blades) to the first disk, while the other half of the contact surfaces press against the second disk, so that both disks are held securely in position.

Abstract: A mechanically actuated workpiece holding apparatus comprising a collet at least partially composed of a plastic material. The collet may include cantilevered leaves and may be a plastic coating over a metal substrate.

Abstract: A clamping apparatus comprises a chuck member and a collet member that includes, at its rear side, a peripheral shoulder. The top side of this shoulder is provided with a thrust surface adapted to engage radially displaceable clamping balls of the chuck member. The bottom side of the shoulder is provided with four centering grooves that cooperate with four centering cams provided in the chuck member. Upon clamping the collet member to the chuck member, the collet member is positioned in X- and Y-directions as well as regarding the angular orientation around the Z-axis by means of the centering cams of the chuck member engaging the centering grooves of the collet member. The collet member is provided with an annular rear surface adapted to rest on Z-reference surface portions of the chuck member upon clamping the collet member to the chuck member.

Abstract: An arbor of a machine tool has a collet arbor base, an expandable and releasable collet having a top band coupled to a bottom band, an actuator pin slidable from the collet arbor base arranged concentrically within the collet and having a reverse male taper on an upper end thereof that actuates the top band of the collet, and a conical ring with a taper angle matching the upper end of the actuator pin arranged proximate a lower part of the actuator pin concentric therewith, wherein the reverse male taper at the upper end of the actuator pin activating the top band and the conical ring having a matching taper activating the bottom band of the collet cause the collet to expand and retract accordingly.

Abstract: A keyless chuck having both an automatic locking feature and a manual locking feature. The automatic locking feature provides for automatic locking of the chuck in a tightened state when a predetermined tightening torque has been exceeded. The chuck can be utilized with only the automatic locking feature engaged. If desired, a manual locking feature can also be engaged wherein rotation of the outer sleeve relative to the body is prevented. A retaining feature can be employed to inhibit the movement of the manual locking feature between a locked and unlocked position. The retaining feature thereby avoids accidental engaging or disengaging of the manual locking feature.

Abstract: An expanding, inner diameter gripping collet assembly for a pick-off spindle. An arbor base is connected to the pick-off spindle and is moveably connected to a moveable arbor. The moveable arbor engages and is driven by the pick-off spindle nose. The moveable arbor has motion-translating cam surfaces on one end that engage corresponding surfaces on one end of an expanding collet. A drawplug having motion-translating cam surfaces that engage corresponding ones on the other end of an expanding collet is inserted through the moveable arbor and secured into the arbor base. The collet assembly also includes an ejector housing, in which an ejector is positioned for sliding movement. A compression spring biases the ejector forwardly.

Abstract: A coupling device, particularly for vehicle wheels undergoing surface finishing, comprising elements for the releasable fixing of a wheel to a chuck, which act in holes for the passage of screws for fixing the wheel to a hub of a vehicle.

Abstract: A clamping device for clamping a machine element (3), in particular a tool holder for a drilling, milling or grinding tool or the like, which rotates about an axis of rotation (9), comprises a base body unit (11) which has a receiving opening (21) which is central with respect to the axis of rotation (9) and into which a coupling shank (5) of the machine element (3) can be fitted axially from one end, a chuck (23) which is arranged in the receiving opening (21), and a chuck-actuating unit (25), which is guided on the base body unit (11) in such a manner that it can be displaced in the axial direction relative to the latter, for actuating the chuck (23).

Abstract: The invention provides an expanding mandrel comprising a shaft (1) having a conical forward end (10), an expanding sleeve (5) constituted by a ring provided with longitudinal slits designed to slide over said conical forward end (10), the inner wall of said sleeve (5) itself also having the shape of a cone the apex angle of which is equal to that of the conical forward end (10), and a tie member (2) designed to be connected to a rod that can be caused to slide along the axis of the machine spindle to control the gripping or the release of a workpiece. According to the invention, the sleeve (5) is connected to said tie member (2) via a control ring (3) integral with the tie member (2), and the mandrel comprises a removable quick mounting means enabling the sleeve (5) to be secured to said control ring (3).

Abstract: The invention provides an expanding mandrel comprising a shaft (1) having a conical forward end (10), an expanding sleeve (5) constituted by a ring provided with longitudinal slits designed to slide over said conical forward end (10), the inner wall of said sleeve (5) itself also having the shape of a cone the apex angle of which is equal to that of the conical forward end (10), and a tie member (2) designed to be connected to a rod that can be caused to slide along the axis of the machine spindle to control the gripping or the release of a workpiece. According to the invention, the sleeve (5) is connected to said tie member (2) via a control ring (3) integral with the tie member (2), and the mandrel comprises a removable quick mounting means enabling the sleeve (5) to be secured to said control ring (3).

Abstract: A circular flexible collet that provides a 360 degree gripping engagement with a cylindrical workpiece and which is operable by an actuator member incorporated in a workpiece chuck. The collet may be constructed as an internal collet for gripping engagement with a workpiece internal periphery, or as an external collet for gripping engagement with a workpiece external periphery. The flexible collet may be used for single, or plural workpiece gripping actions. The collet includes a split spring steel body having a radial opening split space and an outer and an inner circular periphery. One circular periphery is a workpiece gripping surface, and the other circular periphery has a tapered cam surface engageable by a workpiece chuck actuator member. The tapered cam surface has a plurality of circumferentially spaced apart slots, having an open outer end. In an internal collet the tapered cam surface is formed around the collet body inner periphery.