Abstract: Since a tool holder is formed of a structure which is elastically deformed by a centrifugal force produced as the tool holder rotates around a rotation center axis, the rotation radius of a tool with a cutting edge directed to the rotation center axis varies from zero to an arbitrary value. The structure of the tool holder includes two beams elastically deformable to the same degree in opposite directions by the centrifugal force, and centrifugal force components acting on the two beams cancel each other so that a rotation balance is maintained even when the rotational speed of the tool holder is changed.

Abstract: A diaphragm chuck (1) with clamping jaws (3) inserted in its chuck body (2) in a driven connection with a diaphragm (4) that can be deformed by an axially adjustable actuator (5) and is provided with clamping jaws (3) with contact pieces (22), in which counterweights (8) assigned to the clamping jaws (3) are inserted into recesses (7) of the chuck body (2) and the clamping jaws (3) can be clamped against the diaphragm (4) by means of quick-clamping devices (31) engaging in the contact pieces. The contact pieces (22) are each provided with an intermediate element (101) in the area between the clamping jaws (3) and the quick-clamping devices (31) by means of which the flexural moments and/or rotational torques created by the quick-clamping device (31) can be eliminated and it is possible to transmit exclusively axially vectored tensile forces onto the clamping jaws (3).

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 diaphragm chuck assembly having clamping jaws disposed in a chuck body and in driven connection with a diaphragm deformable by an axially adjustable actuator, the clamping jaws having contact pieces, in which counterweights are disposed in recesses of the chuck body and the clamping jaws are clamped against the diaphragm by means of quick-clamping devices engaging in the contact pieces, the contact pieces being arranged in the diaphragm and in the counterweights with radial play. The clamping jaws are supported against a first surface extending axially in parallel to the chuck body in the clamping position and against a second reference surface extending at right angles to the first reference surface and into the diaphragm. The clamping jaws can be changed in a short time and the clamping jaws can be replaced without having to be reground.

Abstract: A clamping chuck has a chuck body and clamping jaws that are shiftable in radial jaw guides. Conveying elements are radially guided in the chuck body. Lubricant is pumped into lubricating orifices, and through them to lubrication points by radial motion of the conveying elements. Each pocket has at least one pump piston in a cylinder bore of the conveying element, and is held in the pocket in so that the conveying element moves relative to the pump piston. The pump piston protrudes through the conveying element and into the radially outer region of the pocket. The tubular end portion is connected to the piston space. A first nonreturn valve is provided in the pump piston. The piston space is connected to a lubricating orifice of the chuck body, and a second nonreturn valve allows lubricant flow from the piston chamber to the lubricant conduit.

Abstract: A chuck rotatable about an axis has an actuator system with a housing rotatable about the axis and connected to the chuck, a threaded rod in the housing, extending along the axis, connected to the jaws, and axially displceable to radially shift the jaws, an electric motor, a drive wheel rotatable about the axis on the housing and driven by the motor, and a harmonic drive. This drive has a wave generator rotationally fixed to the drive wheel, a flexspline surrounding the wave generator and having external teeth, and a ring gear fixed on the housing meshing with the ring gear, and normally rotating jointly with the threaded shaft, a threaded connection between the flexspline and the threaded rod. A sensor on the chuck detects an instantaneous rotation speed of the chuck, and a controller connected between the sensor means and the electric motor axially shifts the chuck in accordance with the sensed rotation speed.

Abstract: A wheel chuck includes a plurality of moveable jaws mounted upon a support structure. A plurality of moveable counterweights are mounted upon the support structure with each counterweight opposite from and connected to a corresponding one of the jaws. Upon rotation of the chuck the counterweights develop forces in opposition to centrifugal forces acting upon the jaws.

Abstract: An equalizing chuck assembly for heavy duty application includes a chucking assembly having a plurality of rocker arms operably connected to an actuator by a plurality of toggle links. Jaw members are disposed on one end of the rocker arms and a counterweight is disposed on an opposite end of the rocker arms. The equalizing chuck assembly utilizes a plurality of equalizing plates interconnected between the actuator and the rocker arm to provide a degree of adjustment to accommodate eccentricities within the workpiece to be held by the chucking assembly.

Abstract: A power chuck assembly for securing a workpiece as the chuck assembly moves or rotates the workpiece is disclosed. The assembly includes a body portion, at least two gripping members and at least two counterweights wherein said counterweights operate to assist in securing a workpiece upon the chuck assembly.

Abstract: A sliding jaw chuck assembly for heavy duty applications has a plurality of radially slidable jaw mounts each actuated by an L-shaped lever mounted for rocking movement about a supporting trunion. The chuck assembly includes a sealed housing subassembly which encloses a sliding jaw subassembly. The sliding jaw subassembly utilizes a plurality of master slides, each slide having a jaw support portion and a counterweight support portion interconnected by a bridge. A gripping jaw is releasably secured to the jaw support portion and a counterweight is releasably secured to the counterweight supporting portion.

Abstract: The invention relates to a chuck with chuck jaws (2) which are guided in the chuck housing (1). Inner jaws (4) which can be coupled or uncoupled are assigned directly or indirectly to said chuck jaws via rack gears (3), whereby the inner jaws (4) are connected to a central pulling head (12) via a wedging mechanism. The pulling head is connected via a rod or hollow shaft (13), said rod or hollow shaft being guided in a central bore of the main spindle (25), to the piston of a hydraulic cylinder arranged on the rear part of the main spindle (25).

Abstract: In a diaphragm chuck (3) with clamping jaws (3) which are in a drivable connection with a deformable diaphragm (4) by means of jaw carriers (6) and in which counterweights (8) allocated to the clamping jaws (3) are inserted in the chuck body (2), the clamping jaws (3) are provided with axially aligned joining pieces (23) which are held in the counterweights (8). The clamping jaws (3) can be clamped together with the jaw carriers (4) and the diaphragm as well as with the counterweights (8) by means of quick clamping devices (31) which engage in the joining pieces (23).This embodiment achieves a situation in which the clamping jaws (3) can be changed rapidly and in a straightforward procedure by releasing the quick clamping devices (31) by means of a tool which can be inserted radially from the outside into the chuck body (2).

Abstract: A jaw assembly used with the rotary driving member of an air cylinder to process a workpiece, including a casing having a center through hole into which the rotary driving member of the air cylinder is inserted, a springy jaw holder covered on the casing, the springy jaw holder having two springy thinner areas and a rigid thicker area concentrically arranged around a center through hole thereof, a plurality of jaws and a pair of rails radially provided at an outer side, and a T-block moved in between the rails and fixed at the desired location to hold the jaws on the jaw holder, a socket mounted in between the casing and the springy jaw and coupled to the rotary driving member of the air cylinder, a plurality of counterweights mounted around the socket and connected between the casing and the jaw holder, the counterweights each having a plurality of through holes, and a plurality of axle bushes respectively mounted in the through holes at the counterweights and connected between the casing and the jaw holder

Abstract: A force-actuated chuck includes a chuck body having radial jaw guides and clamping jaws guided in the radial jaw guides. At least one force-activated movable drive member is arranged in the chuck body for driving the clamping jaws. Each one of the radial jaw guides has a centrally arranged cutout for receiving a lubricant.

Abstract: A tooling apparatus and method for machining a blank having a first surface portion with a first spin center and a second surface portion with a second spin center offset from the first spin center. The improved tooling apparatus includes a turning fixture connectable to a rotatable spindle in one of a first position and a second position. The first spin center of the blank aligns with the axis of rotation of the spindle when the turning fixture is in its first position and the second spin center of the blank aligns with the axis of rotation when the turning fixture is in its second position. In the preferred embodiment, the rotatable spindle includes a dowel cooperative with first and second bores formed in the turning fixture to position the turning fixture relative to the spindle. The first and second bores are separated a distance equal to the distance between the first spin center and the second spin center of the blank.

Abstract: Polyvalent clamp chuck for machine-tools comprising a cylindrical chuck body in the front face of which are radially guided at least two gripping jaws that can be brought together or separated by drive means by the axial withdrawal or advance of an internal control cylinder concentric with the chuck. The control cylinder is provided at its front end with a connector member, for instance in the form of an inwardly directed gripping flange for additional fitted support means. The coaxial front opening of the chuck has a conical part whose summit is oriented rearwards. The chuck further comprises means for selecting the maximum amplitude of displacement of the control cylinder.