Abstract: A tool holder having a main body for coupling the tool holder to the spindle of a machine tool and having a clamping surface connected thereto for clamping a tool, characterized in that the tool holder has at least one portion shaped in one piece by primary shaping, which in its interior has one or more cavities that form an enclave in the portion shaped by primary shaping.

Abstract: A carrier puck comprising a body having an interior chamber, into which a receptacle to be held by the carrier puck can be inserted, the carrier puck comprising a deformable element, disposed at least in part within the interior chamber; and the carrier puck comprising a pressurizing mechanism configured and arranged to facilitate fluid-filling and/or pressurization of a region within the interior chamber, and in dependence upon said pressurization, the deformable element is forced to move inwardly of the interior chamber and into contact with a receptacle for securing the receptacle within the interior chamber of the carrier puck. In this way the available space within the interior chamber for accommodating a receptacle can be reduced about the receptacle, thus securing the receptacle, accurately and quickly in its location within the carrier puck.

Abstract: In one aspect, expansion sleeves for pressure-activated tool holder apparatus are described herein. An expansion sleeve, for example, comprises a first end, a second end and a longitudinal axis extending between the first end and the second end. A first set of fluid chambers are proximate the first end of the sleeve and a second set of fluid chambers are proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets.

Abstract: The invention relates to a hydraulic expansion chuck having an end on the tool side; and an end on the machine side. A shaft is disposed on the end on the machine side for clamping the expansion chuck in a machine tool. An expanding bushing is disposed on the end on the tool side and surrounded by a pressure chamber and can be radially deformed for clamping a tool under the action of a pressure medium received in the pressure chamber.

Abstract: The invention relates to a hydraulic expansion chuck with a basic body, with an expansion bush which is received in the basic body and defines a reception space for a tool to be chucked, and with a pressure chamber which is delimited between the expansion bush and the basic body, at least one solder region being provided, in which the expansion bush is soldered to the basic body, wherein, between the pressure chamber and the solder region, a seal is provided which is formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body.

Abstract: A tool holder includes a holder body having a trunk and a grip tube, a pressure ring fitted around the grip tube, a nut for axially moving the pressure ring, and a sleeve defining a pressure chamber around the outer periphery thereof. The trunk is formed with cylinders in which pistons are inserted respectively. The cylinders communicate with the pressure chamber through a communication channel. Hydraulic fluid is sealed in the cylinders, the communication channel and the pressure chamber. When the nut is rotated, the pressure ring is axially moved, thus radially compressing the grip tube. Simultaneously, the pistons are pushed into the respective cylinders, thus increasing the pressure in the pressure chamber. As a result, both a first holding hole formed in the grip and a second holding hole formed in the sleeve decrease in diameter, so that a tool inserted in these holes are held in position.

Abstract: A repairable lanyard release connector. The repairable connector includes a replaceable assembly with a housing that has a series of internal nested components, and a communications insert that is configured to nest within the housing. The communications insert includes a first structure for releasably engaging first cooperating structure of a first component of the series of internal nested components so that the communications insert and the first component rotate in concert when one is rotated. The communications insert also includes a second structure for releasably engaging second structure of a first component of the series of internal nested components to limit reciprocating motion of the communications insert in the replaceable assembly.

Abstract: A holder for a cutting tool includes a body having a first channel for receiving a stem portion of the cutting tool. The body has a second channel intersecting with the first channel. The holder further includes a plunger to be inserted in the second channel, the plunger having a third channel the cross section of which at least partly overlaps with the cross section of the first channel when the plunger is inserted into the body so as to enable the stem of the cutting tool to extend into the third channel when the stem is inserted in the first channel. The holder further includes a mechanism for locking the stem against movement relative to the body by means of the plunger. A cutting tool for use in such a holder and a cutting insert are also provided.

Abstract: A workholder to hold a workpiece, including a main body partially defining a fluid chamber, and a bladder carried by the main body with an interference fit, further defining the fluid chamber, and composed of an 80 to 100 durometer Shore A scale hardness polymer of a 12:1 to 18:1 diameter-to-wall-thickness ratio. Annular seals may further define the fluid chamber, and are disposed radially between the bladder and main body and axially adjacent the fluid chamber, and are composed of a 60 to 80 durometer Shore A scale hardness polymer. A collet is carried and driven by the bladder for gripping engagement with the workpiece.

Abstract: Provided is a holder device that uses a pressure medium suitable for gripping a long and thin grasped object, the device eliminating need for a small-diameter machining for a device body and allowing use of a material suitable for sleeve deformation at a portion where a pressure chamber is formed. A holder device capable of deforming in a radial direction for fastening a grasped object 7 through a function of a pressure medium, includes a device body 2, a sleeve 3 disposed at a leading end of the device body 2 for gripping the grasped object 7, a pressure chamber 8 formed circumferentially in the sleeve 3, and a support portion 9 provided continuously from the device body 2 for forming the pressure chamber 8 together with the sleeve 3.

Abstract: A workholding apparatus includes a body, and a workholding sleeve composed of metal and carried by the body. A fluid chamber receives a fluid between the body and the workholding sleeve. Under fluid pressure, the sleeve is radially displaceable and recoverable to a high degree. For example, when displaced under fluid pressure, the sleeve experiences substantially complete and repeatable strain recovery of at least about 2% of its overall cross-sectional area. Preferably, the sleeve is composed of Nitinol.

Abstract: A clamp sleeve for an indexing device is provided, the clamp sleeve being capable of providing a desirable clamping force without greatly increasing a fluid pressure, and having a long life. A clamp sleeve 34a has a through hole 34a7 and an annular groove 34a1 continuously provided around an outer periphery of the clamp sleeve 34a and defining a part of a pressure chamber 34d. The annular groove 34a1 includes a pair of inner end surfaces 34e6, 34e6?, a groove bottom surface 34e0 extending in parallel to the through hole 34a7, and arcuate first transition surfaces 34e1, 34e1? provided between the inner end surfaces 34e6, 34e6? and the groove bottom surface 34e0. The annular groove 34a1 is provided such that a thickness t1 in a region provided with the groove bottom surface 34e0 is a thickness to allow the region to be deformable.

Abstract: A cylindrical pressure-receiving member 34b is arranged in a space between a ring-shaped clamp sleeve 34a and a frame 31b such that the clamp sleeve 34a is fitted around a shaft 38b being integral with a rotary shaft 39. In an outer peripheral portion 34a2 of the clamp sleeve 34a, an annular groove 34a1 provided continuously over the entire circumference within an axial area of the outer peripheral portion 34a2 fitted into an inner peripheral portion 34b3 of the pressure-receiving member 34b provides a thin-wall portion 34a5. Also, a space surrounded by the annular groove 34a5 and the pressure-receiving member 34b provides a pressure chamber 34d communicating with a fluid control circuit. A predetermined gap 34d2 is provided between an inner peripheral surface 31b4 of the through hole 31b1 of the frame and an outer peripheral surface 34b2 of the pressure-receiving member 34b.

Abstract: The invention relates to a hydraulic expanding chuck (1) having a main body (2) and an expanding bush (3), which is inserted into the main body (2) to form at least one pressure chamber (5a, 5b) and is intended for chucking a tool. The expanding bush (3) has a radial opening (20), which is arranged in alignment with a driver (21) which is held adjustably in the main body (2) and can be moved via the opening (20) into positive engagement with a driving surface (22) on the tool shank of a tool to be received in the expanding bush (3). According to the invention, the driver (21) has a driver screw (23), which can be driven from radially outside the hydraulic expanding chuck (1) and is screwed into a threaded bore (24) formed in the main body (2) in alignment with the radial opening (20).

Abstract: A fixture (10) for supporting a workpiece (18) during a machining operation. The fixture comprising a base (12) provided with a channel (14) for receiving part (16) of the workpiece (18), the channel having a first wall (20) facing an opposing second wall (22). An inflatable diaphragm (24) is located on the first wall (20), and configured to engage with an engagement surface (36) on the workpiece and bias the workpiece against the second wall. The diaphragm comprises a deformable portion (26) spaced apart from the first wall of the channel, the deformable portion having ends (28,30) which provide a seal with the first wall to define a chamber (32) enclosed by the first wall and diaphragm.

Abstract: A workholding apparatus includes a body, and a workholding sleeve composed of metal and carried by the body. A fluid chamber receives a fluid between the body and the workholding sleeve. Under fluid pressure, the sleeve is radially displaceable and recoverable to a high degree. For example, the sleeve is radially displaceable to at least one percent in diameter with runout within about 0.03% of its diameter, and after release of fluid pressure repeatably recovers to within about 0.01% of its original relaxed diameter. In another example, when displaced under fluid pressure, the sleeve experiences substantially complete and repeatable strain recovery of at least about 2% of its overall cross-sectional area. Preferably, the sleeve is composed of Nitinol.

Abstract: A hydraulic expansion chuck for chucking a tool such as a boring tool, a milling cutter, or other cutting tool. The hydraulic expansion chuck has an expansion bushing which can be deformed radially under the action of a pressure fluid contained in a pressure chamber to chuck a tool. Pressure is transmitted to the pressure chamber from a pressure generating unit via an annular gap positioned about the chuck axis.

Abstract: A safety device is provided having a clamping system that uses pressure admission into a chamber of a clamp element dependent on the position of a weight to be carried relative to the clamping system. For this purpose a valve is provided in a medium supply line, which valve is to be opened or closed by means of a movable actuation element. Here, the actuation element should be movable in the same direction in which the weight moves, preferably in a vertical direction. As a result of the arrangement of such a valve, the device couples the vertical movement or position of the weight with an actuation of the valve, and thus to provide an additional control for the pressure admission into the chamber or the clamping force resulting therefrom. A preferred chamber has curved top and bottom walls that elongate with a pressure drop.

Abstract: Bracing means for supporting a moveably mounted or flexible component during a machining operation that has an expandable member adapted to fit between a component and a support surface. When the expandable member is expanded a bracing member will resist movement and/or flexing of the component caused by forces arising during the machining operation. The expandable member is deformable to substantially conform to the shape of the component and the support surface.

Abstract: A workholding apparatus including a body and a drive member carried by the body, so that the drive member and body partially define a fluid chamber therebetween for containing a fluid. The drive member includes an annular flange that axially abuts and that attaches to the body to resist torsional twisting of the drive member relative to the body. A driven member is also carried by the body and includes multiple displacement reliefs therein. Interengagement features are provided between the driven member and other components of the workholding apparatus, such as the drive member, to resist torsional twisting of the driven member.

Abstract: Disclosed is a tool holding device (22, 50, 58) for retaining a tool (24) on a tool chuck (20).

Abstract: A workpiece holding apparatus comprises a body, a bladder carried by the body, and a sleeve that is carried by the bladder. A fluid chamber is at least partially defined by the body and the bladder for containing a fluid therein. The bladder comprises at least one first polymer-containing section composed of a first polymer-containing material and is adapted to radially deflect the sleeve into engagement with the workpiece. The bladder further comprises at least one second polymer-containing section disposed adjacent to the first polymer-containing section(s) and is composed of a second polymer-containing material that is less flexible than the first polymer-containing material and where at least a portion of the second polymer-containing section(s) are constructed to engage elastomeric seals of the body of the workpiece holding apparatus to thereby seal pressurized fluid within the fluid chamber.

Abstract: A workpiece holding apparatus comprises a body, a cartridge assembly carried by the body and a sleeve. The cartridge assembly comprises at least one sealing member and a bladder supported by a retainer and at least partially defining a fluid chamber that houses a pressurized fluid. At least one annular seal is axially provided between the bladder and the sealing member(s). The annular seal(s) correspond with a sealing member, which engages the annular seal(s) upon adjustment of the sealing member. A seal is formed between the sealing member and the bladder that prevents fluid from escaping the fluid chamber. The annular, cylindrical sleeve engages a workpiece when the fluid chamber houses a pressurized fluid, which exerts a radial force against the bladder to the sleeve and into engagement with the workpiece.

Abstract: A tool holder is disclosed for a boring, milling or reaming tool that can rotate about an axis of rotation. At the end of its clamping shank that is located on the side of the tool, the tool holder has a bush part with a mounting opening, which is centered with regard to the axis of rotation and which is provided for accommodating a fixing shank of the tool. The mounting opening for a bush part can be radially expanded to a width, which enables the fixing shank to be inserted or removed, particularly by means of eddy currents that are magnetically induced inside the bush part by an induction coil. In addition, the mounting opening can, by cooling, be radially contracted to a width that holds the fixing shank with an interference fit.

Abstract: An adjustment device for adjusting the position of at least one cutter of a fine machining tool, particularly a reamer, with respect to a cutter support (ST) is described. To allow the cutter to be adjusted as precisely as possible, the cutter support (ST) borders at least one pressure chamber (DK) which is arranged in the adjustment direction of the cutter (S) with a displacement with respect to it and which is filled with a pressure medium which can be placed under pressure using a pressure generation device. Between the cutter (S) and the pressure chamber (DK), a cutter support wall (W) remains which is elastically deformable upon application of pressure by the pressure transfer means to adjust the cutter position.

Abstract: The invention relates to a tool holder for receiving a tool, especially a boring, milling, or grinding tool, which can be rotated about a rotational axis and which comprises a clamping shank. In a preferred form of embodiment, said clamping shank comprises a receiving opening (9) which is centrically arranged in an end socket (7) in relation to the rotational axis, said end socket being closed in an annular manner and said receiving opening being used for the interference fit of a holding shank pertaining to the tool. The end socket (7) contains a plurality of pressure chambers which are distributed in the circumferential direction and which extend at least approximately in the direction of the rotational axis. Said pressure chambers (13) can be connected to a pressure means supply which is especially hydraulic, in order to radially expand the receiving opening (9).

Abstract: A clamping device for the releasable fastening of a part (grinding wheel 1) on a shaft has a clamping nut (3) which can be screwed onto the shaft and is intended for clamping the part in place. A chamber (9) is provided between a pressure member (load piston 5) for bearing against the part (grinding wheel 1) and the clamping nut (3), this chamber (9) containing a hydraulic pressure medium (silicone oil 11). Furthermore, an escape space (15) which can be connected to the chamber (9) is provided for the hydraulic pressure medium in order to remove the clamping pressure from the grinding wheel (1).

Abstract: An hydrostatic tool system including a tool assembly having a hydrostatic tool holder for holding a rotating tool, for example a machine or cutting tool. The hydrostatic tool system may also include a tool storage system, a tool transport system and a tool drive system. The hydrostatic tool system may also include an hydraulic coupler for hydraulically connecting the hydrostatic tool holder to a pressurizing or depressurizing source. The hydrostatic tool system may also include a system controller.

Abstract: The invention concerns a clamping chuck in which is embodied a central receptacle (4) for the shank of a workpiece or tool to be clamped, and a clamping mechanism (6), a stop element (9) that can be axially adjusted by means of an adjusting device (12) being provided for axial positioning of the shank in the receptacle (4), such that the adjusting device (12) is configured as a worm gear drive having a worm (13) rotatably mounted transversely to the receptacle (4) in the chuck body (1) and a worm gear (14) arranged coaxially with the receptacle (4).

Abstract: A hydraulic chuck includes a center bore for receiving a tool shank. At least one closed cavity is disposed in the chuck body adjacent the bore and extend circumferentially by a distance less than 360 degrees. The cavity containing device communicates with the medium for pressurizing the medium to radially deform and expand the bore wall from a normal diameter to a larger diameter to enable the tool shank to be moved into or from the bore. A depressurizing of the medium causes the bore wall to radially retract to the normal diameter for clamping the member in the bore.

Abstract: An arrangement for a hydraulically operated tool holder has a pressurizing system for operating a clamping device for a tool or workpiece. The pressurizing system comprises a movable operating element for pressure generation whereby the movement of the operating element causes a movement of a guideway which has an inclined or end or bend surface with respect to its direction of movement. The guideway coacts with the actuator rolling or sliding at the surface thereof whereby the movement resulting from the movement of the guideway is transmitted to at least one pressure transfer piston in a pressure cylinder. The pressure transfer piston comprises at least one support part for the actuator and a lip seal and coacts with the clamping device.

Abstract: A shaft assembly including an inner hub having a centrally-disposed bore therethrough and an outer surface for carrying a first member concentrically thereon for rotation therewith, an outer hub having a centrally-disposed bore therethrough and an outer surface for carrying a second member thereon for rotation therewith. The bore of the outer hub is adapted for receiving the inner hub concentrically therein for rotation therewith. An outer pressure-expansible sleeve is provided for being concentrically-mounted within the bore of said outer hub and pressurized for locking the outer hub onto the inner hub. An inner pressure-expansible sleeve is concentrically-positioned in the bore of the inner hub and pressurized for locking the inner hub onto a rotatable spindle, whereby the inner hub and outer hub and the respective members mounted thereon are locked in fixed, concentric relation relative to each other and to the rotatable spindle.

Abstract: The clamping apparatus (10) has a clamping ring (13) of an elastomer, which has a U-shaped cross section. The clamping ring (13) is seated in a recess (15) in a holding device (12) having parallel side walls. The recess (50) can be connected via a connecting line (18) to a hydraulic or pneumatic pressure source. The outside of the web part (21) of the U-profile acts as a clamping surface (24). Embedded in the area of this clamping surface is a number of clamping elements (27) made of a material of higher strength, in which at least that envelope line which faces away from the clamping surface (24) is exposed. The clamping elements (27) have the same axial extent as the clamping ring (13). One of the side walls of the recess (15) is formed by a clamping part (31), which is part of a clamping device (36) and is guided axially displaceably on the holding device (12) and is sealed off with respect to the latter by means of a circumferential seal element (34).

Abstract: An expansion chuck for simultaneously chucking a tool shaft and a hollow tool part such as a beveling bush. A solid chuck body which can be chucked in the working spindle of a machine tool has in its chucking part a central receptacle bore to receive the tool shaft to be chucked as well as an external chucking face to mount the hollow tool part. An elongated toroidal chamber is arranged coaxially with the receptacle bore and the outside chucking face in the interior of the chucking part of the chuck body and is filled with an incompressible medium. Due to a hydraulic internal pressure in the toroidal chamber, both of its peripheral walls undergo elastic deformation, radially inwardly to chuck the tool shaft, and radially outwardly to chuck the hollow tool part.