Abstract: The tool shank contains a taper member, a flange member, a holder member, a clamped member, and a number of slits. The taper member has a conic shape extended along an axial direction with a top section and a bottom section. The flange member is beneath the bottom section of the taper member. The holder member is extended downward from a bottom side of the flange member along the axial direction. The clamped member is extended upward from the top section of the taper member. The slits are configured at intervals around the bottom section surrounding the axial direction. Each slit defines a slightly outwardly bulge. The bulges increase the contact area with and avoid gaps to a tapered socket of a spindle. As such, the tool shank is tightly jointed to the spindle during high-speed rotation without causing vibration and damage.

Abstract: A balancing adapter for clamping a rotor to a machine part of balancing machine that rotates about an axis of rotation. The balancing adapter has a main body having a central accommodating opening for the rotor, a collet chuck having clamping elements for detachably retaining the rotor in the accommodating opening, and an actuating device for moving the clamping elements between a clamping position and a releasing position. In order to enable positionally accurate and reproducible accommodation and retention, the clamping elements of the collet chuck are supported on a guiding surface on the main body.

Abstract: A tool holder with a main part, a deformable receiving portion for clamping a tool, and at least one blocking element which is designed to engage into a corresponding counter element on the tool in order to prevent the tool from moving axially out of the tool holder. The at least one blocking element is integrally formed with the receiving portion. A clamping system having such a tool holder and a method for producing a receiving portion for such a tool holder are also described.

Abstract: A clamping device for clamping a work piece includes a chuck, a collet positioned inside the chuck, and a bayonet fastener operatively arranged so that the collet is fastenable in the chuck and is removable from the chuck solely by manual operation of the bayonet fastener without the use of auxiliary tools.

Abstract: A tool holder includes a collet clamped with a tool, a collet chuck connected to a power tool, and a clamping nut connecting the collet to the collet chuck. At least two groove-shaped material recesses are created in a body of the collet. The at least two recesses extend in a lengthwise direction of the collet body, and starting from an open circumferential surface of the collet body, extend in a radial direction up to a limit stop.

Abstract: A hydraulic expansion chuck for receiving a tool includes a chuck body, an expansion bushing which is received in the chuck body and defines a chuck opening, a pressure chamber which is interposed between the expansion bushing and the chuck body, and a reduction sleeve. The reduction sleeve is received in the chuck opening of the expansion bushing and defines a tool holder receptacle for receiving the tool to be chucked. The reduction sleeve includes a connector element configured to releasably attach the reduction sleeve to the chuck body. The reduction sleeve also may include an adjustment element configured to adjust the axial position of the tool in the tool holder receptacle.

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 chuck device for holding an unmodified, circumferentially round tool shaft or collet includes an annular head portion having a distal end surface, a laterally spaced coupling end section, an outer circumferential surface, and a central longitudinally extending bore with an inner circumferential bore surface to slidingly receive the tool shaft or collet with the tool axis aligned collinearly with the bore axis. The head portion includes a first slot extending inwardly on one side of the annular head and normal to the distal end surface, and a second slot extending from the outer circumferential surface normal to and intersecting the first slot to form stationary and pivotable segments having a bore-facing, tool grasping surface that radially directs a compressive grasping force in an amount sufficient to hold the tool with a slip-torque of up to about 430 inch-lbs. at a rotational speed of up to at least about 20,000 rpm.

Abstract: Systems and devices adapted to provide a low profile drilling and reaming tool/device are disclosed. In one embodiment, a device includes: a base housing; a fixture head connected to the base housing, the fixture head including an aperture therethrough; a rotational connector disposed within the aperture and configured to rotate within the aperture; and a fixture slidingly connected to the fixture head via the rotational connector, the fixture extending through the aperture.

Abstract: A powered surgical apparatus for use with a source of irrigation fluid and a source of suction and for powering a surgical tool such as a cutting blade. The surgical apparatus includes a handpiece and a cutting blade retention assembly integrated in passage in a distal end of the handpiece. The retention assembly includes an aligned, pair of radially movable buttons, aligned in axially extending passages in communication with the passage in the distal end of the handpiece, the movable buttons can engage with and cause rotational movement of a collet member assembly rotatably supported in the passage in the distal end of the handpiece.

Abstract: The invention relates to a tool holder with a tool holding fixture, in particular a clamping chuck such as a contracting chuck, a draw-in collect chuck, a hydraulic expanding chuck and a high-precision chuck, and a shank of a tool, in particular a rotary tool, accommodated in it, wherein the tool holder contains a means for preventing the tool from being pulled out, locking it against axial displacement. This pull-out preventing unit comprises at least one locking element and at least one locking groove, which corresponds to the said locking element, receives it and interacts with it in a positively locking manner. In this case, both the locking element and the locking groove are formed at least partly in the manner of a ball head. Preferably, the tool has the locking grooves.

Abstract: A pull-out preventer and milling collet that includes the pull-out preventer. The pull-out preventer is configured to prevent axial migration of a fluted milling tool out of the milling collet. The milling collet includes a through-hole extending from a rear-end aperture to an opposing cutting-end aperture of a basic body thereof. The pull-out preventer is located at the cutting-end aperture of the basic body.

Abstract: A downhole actuation system comprises an actuation mechanism comprising an indicator; a wellbore tubular; and a collet coupled to the wellbore tubular. The collet comprises a collet protrusion disposed on one or more collet springs, and the collet protrusion has a position on the one or more collet springs that is configured to provide a first longitudinal force to the indicator in a first direction and a second longitudinal force to the indicator in a second direction. The first longitudinal force is different than the second longitudinal force.

Abstract: The description shows a collet chuck 303 for clamping a tool for the purpose of machining a workpiece, comprising: a cutout for receiving a collet 301, wherein the collet chuck 303 has a cutting edge 306 for machining the workpiece.

Abstract: A collet mounting assembly for a die bonder comprises a collet mount having a first end attached to the die bonder and a second end opposite the first end with a cavity defined in the second end for receiving a shaft of the collet. The collet mounting assembly further comprises a fastener for securing the collet inside the cavity of the collet mount. A compression force is generated around the shaft of the collet received in the collet mount by the flexing of the fastener when it is attached to the collet mount, for securing the collet within the cavity of the collet mount.

Abstract: The present invention relates to a holding device for studs having a radially projecting flange section. The holding device comprises a collet component having a clamping section and a hollow insertion section. The clamping section is formed by clamping surfaces which are provided at the free ends of a plurality of clamping arms designed to exert a radially inwardly directed clamping force for clamping the stud in place. A securing device is arranged on the insertion section and is designed in such a way that a flange section of a stud directed past the securing device is mounted in a securing position between the securing device and the clamping section. The clamping arms are of the same length and at least two of the clamping arms each have, as a securing device, a radially inwardly directed securing lug.

Abstract: The invention relates to a clamping device which comprises a base, having a center holding fixture for a structural component to be clamped and a plurality of cavities arranged around the holding fixture. The base can be elastically deformed in such a manner by radial compressive forces applied from the outside in the area of the cavities that a structural component to be clamped can be inserted in the holding fixture and can be elastically returned to its former shape by reducing or releasing the radial forces, thereby establishing a pressure connection with the structural component to be clamped. The invention is characterized in that centrifugal counterweights are provided inside the cavities.

Abstract: The invention relates to a clamping device with a base body (2) which comprises a central receptacle (5) for a component or tool to be clamped, in the base body (2) at least one groove (6) being formed which is open to a face side of the base body (2), and with at least one clamping wedge (9b) which can be pressed axially into the groove (6) from the open face side of the latter to radially deform an inner wall section (7) lying between the groove (6) and the receptacle, which is characterized in that the wall (10) which defines the groove (6) on the outside is designed to be elastic over at least an axial partial section such that it is elastically deformed to the outside when the at least one clamping wedge (9b) is pressed into the groove (6).

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. Key features of the quick change chuck include the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle or to a router or other drive shaft in a number of different ways.

Abstract: A retaining assembly includes a body and a retainer. The body includes a compartment defined in an end thereof. The compartment is defined by a perimeter wall and an end wall. A coupling hole is defined in the end wall for receiving a tool. The retainer is mounted in the compartment of the body and has a through-hole aligned with the coupling hole of the body. The retainer further includes at least one resilient positioning portion abutting against the perimeter wall of the body for retaining the retainer in the compartment of the body. The retainer further includes at least one resilient clamping portion extending into the coupling hole of the body for pressing against at least one face of the tool received in the coupling hole of the body.

Abstract: An insert (70) for a clamping element with two jaws to clamp a rod-shaped element comprises an inner cavity (144) to accommodate a rod-shaped element and at least one flange element (153) at one longitudinal end of the insert intended to abut against the clamping element. The flange element (153) comprises clamping members (161) to reduce the available room within the inner cavity (144) for the rod-shaped element to be clamped and to clamp the flange element (153) between the rod-shaped element and an outer clamping surface of the clamping element to prohibit any longitudinal movement of the clamped insert.

Abstract: A medical handpiece having an elongate grip part, in the forward end region of which a clamping sleeve is rotatably mounted, in which sleeve a shaft of a tool can be inserted and clamped, wherein the clamping sleeve has at least one axial clamping slot and in its longitudinal region a constriction section with a reduced inner cross-section and in the longitudinal region is surrounded by a sleeve receiving space. In order to improve the tool clamping the outer form of the clamping sleeve is, in the region of the constriction section, so configured that through the insertion of the shaft it forms a barrel-like outward bulge and in that the sleeve receiving space is in cross-section the same size or larger than the barrel-like output bulge.

Abstract: A Chucking device comprising a collet with an external taper and a collet holder with a taper socket for the chucking of a rotating part, wherein the taper socket of the collet holder and the external taper of the collet have a taper angle which is smaller than the self-locking angle, and the collet has a head for applying an axial force for pressing it into the holder and for pulling it out of the holder.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. The key features of the quick change chuck are the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle.

Abstract: A collet for carrying a high-speed drill which comprises a collar (2) arranged to enclose a drill shank (1), an outer rim support (8) arranged for attachment to a drill, and a clamping mechanism between the collar and the outer rim support (8). The clamping mechanism is arranged to provide clamping forces between said outer rim support (8) and said collar so that said collar tightly grips a drill shank (1), as a consequence of centrifugal forces and of off center sprag effect forces.

Abstract: A hydromechanical chuck intended to be mounted, with one end thereof, in a machine, such as a drilling machine, milling machine, lathe machine etc. and, with the opposite end thereof to releasably hold a shaft tool like a drill, a milling tool, a rotary saw blade, or a rotary grinding roll. The hydromechanical chuck is formed as a cone coupling chuck comprising a inner sleeve which can change is radial dimensions and has a central bore for receiving the shaft of a shaft tool. The inner sleeve is adapted for being radially compressed against the tool shaft. The hydromechanical chuck has a solid outer sleeve which is axially displaceable on the inner sleeve. The inner sleeve and outer sleeve are formed with a matching cone surface, which, upon a displacement of the outer sleeve on the inner sleeve, provides a radial compression of the inner sleeve.