Abstract: The invention relates to a clamping device (10) for a tool (18) on a machine tool having a holder block (12) with at least 2, in particular a multiplicity of, apertures (16) for receiving clamping sleeves (14), wherein at least two clamping sleeves (14) are received in the apertures (16). Each clamping sleeve (12) has a clamping element (36), with which a tool (18), in particular a shaft (20) of a tool (18), can be clamped. The clamping sleeve (14) at least partially passes through in each case the aperture (16) in the holder block (12) and has, at its end opposite the clamping element (36), the rear end, an expansion element (34) which engages behind the holder block (12) or a counter-support element (30) of the holder block (12).

Abstract: A clamping assembly includes a collet adapter and an expansion sleeve movably disposed in collet adapter and a draw pin movably disposed in the expansion sleeve. The expansion sleeve cooperates with the draw pin to define a containment system configured maintain the expansion sleeve within an axial envelope and a radial envelope within the collet adapter. Axial movement of the draw pin in the expansion sleeve within the axial envelope causes a portion of the expansion sleeve to expand radially outward to a predetermined maximum diameter to releasably clamp the collet in the collet adapter.

Abstract: A method of making an axle sleeve may comprise forming a main body comprising a cylinder, and forming an expansion member whereby a diameter of the main body may be varied.

Abstract: A rotating device includes a cylinder body, a front end cover, a rear end cover, a main shaft, an eccentric rotor assembly and an isolation mechanism. The eccentric rotor assembly includes an eccentric shaft, a rolling piston wheel and at least one rolling bearing. In the rotating device, the eccentric shaft is isolated from the rolling piston wheel by the rolling bearing and the two are rotated, and the cylinder body is reliably sealed by an elastic pre-tightening force. Further provided are a rotor compressor using the rotating device, and a fluid motor. A rotating valve body and a rotating valve body reset mechanism in the rotating device are also improved.

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: An accessory tool retention assembly for a rotary tool includes a collet having a body defining a collet axis and having a plurality of flexible segments that extend longitudinal along the body generally parallel to the collet axis, each flexible segment including a curved end portion that curves radially outwardly from the collet body. A collet chuck is configured to be coupled to an output shaft of a motor of a rotary tool. The collet chuck defines a collet receiving passage configured to slidably receive the collet. A front wall portion on the collet chuck defines an insertion opening aligned with the passage of the collet chuck. The front wall portion defines a plurality of recesses sized and shaped complementary to the curved end portions of the collet. The plurality of recesses is positioned to receive the curved end portions when the collet is inserted into the collet receiving passage.

Abstract: An accessory tool retention assembly for a rotary tool includes a collet having a body defining a collet axis and a plurality of flexible segments that extend longitudinal along the body generally parallel to the collet axis. Each flexible segment includes a curved end portion that curves radially outwardly from the collet body. A collet chuck is configured to be coupled to an output shaft of a motor of a rotary tool. The collet chuck defines a collet receiving passage configured to slidably receive the collet. A detent structure is positioned to block the collet from exiting the collet receiving passage while the flexible segments of the collet are in a relaxed state.

Abstract: The invention relates to a high-precision clamping device for tools in machine tools of the conventional type according to ISO 15488 and to a collet chuck, a base and a tensioning nut. The invention also relates to a chuck key for tightening the locknut without radial stress. The clamping device according to the invention is characterized by a substantially improved runout accuracy, torsional rigidity of the collet chuck and rigidity of the tool clamped therein.

Abstract: A stepped collet includes a first section of generally hollow cylindrical shape having a first outer diameter and an inner diameter, a wall extending radially inwardly from an outboard end of the first section, and a second section of generally split cylindrical shape cantilevered from the wall and having a second outer diameter smaller than the first outer diameter.

Abstract: A splitting wedge includes at least a wedge (1), an external sleeve (3), and a wedge sleeve (2). The wedge sleeve (2) and the external sleeve (3) are connected to one another by providing one with a flange (8, 10) and the other with a groove (7, 9), the flange (8, 10) and the groove (7, 9) being substantially perpendicular with respect to a direction of motion (B) of the wedge (1), and by arranging the flange (8, 10) in the groove (7, 9).

Abstract: A collet has seal bores formed in interspaces of the collet. The seal bores are oriented at an acute angle ? to the longitudinal axis of the collet, and extend towards a tool end of the collet, from a clamping surface of the collet to a collet peripheral surface. Adjacent the clamping bore, the collet has stopping surfaces for accurately locating the seals. When inserted into the seal bores, the seals prevent fluid leakage between the clamping bore surface and the peripheral surface of the collet.

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 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 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 chuck and an article are configured such that the article is releasably secured in the chuck. One of the chuck and article is provided with a crest and the other with a trough. When the article is secured to the chuck, the crest enters the trough so as help prevent slippage of one with respect to the other. The chuck may include a receiver having a tapered bore, a collet having a complementarily tapered outer surface, and a nut configured to be threadingly secured to a forward end of the receiver; the article may be a shank, such as a tool shank. An inner surface of the collet may be provided with a crest which is configured to fit into a trough formed on the shank. In a secured position, the shank is accommodated in the bore of the collect with the crest of the collet at least partially occupying the trough of the shank, thereby preventing movement of the shank relative to the collet, which itself is accommodated in the bore of the receiver.

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: To compensate for tolerances and diameter differences during the chucking of a tool shank (15) in a tool holder (1) of the shrink-fit chuck type, a diameter-compensating bush (17) is provided. The diameter-compensating bush (17) has an outer sleeve (19) having a tapered inner circumferential surface (25) and an inner sleeve (21) arranged coaxially therein and having a tapered outer circumferential surface (27). Once the diameter-compensating bush (17) has been put onto the tool shank (15) and the inner sleeve (21) has been drawn into the outer sleeve (19), for example by means of a ring nut (35), for the diameter compensation, the outer sleeve (19) is thermally shrunk in place in the locating section (9) of the tool holder (1). In this way, rotary tools whose tool shank (15) does not have a diameter corresponding to the diameter or the tolerance requirements of the tool holder (1) can be chucked in a tool holder (1), for example, of the shrink-fit chuck type.

Abstract: A collet holder for insertion into a multi-jaw chuck. The collet holder includes a multi-faceted body having a smooth bore extending therethrough for housing a standard collet and a cap nut threadably secured to the body.

Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.