A zero-point clamping device for centering an object (2), the device comprising: a housing (4), a receiving opening (5), and two opposite clamping slides (7, 8) mounted axially displaceably in a bore (9) in the housing (4), which open into the receiving opening (5) during clamping and act on the object (2) to center it, wherein clamping is achieved by an actuating element (11) rotatably mounted in the housing (4), the axis of rotation (12) of which runs parallel to the clamping slides (7, 8), a through-opening (13) aligned perpendicularly to the clamping slides (7, 8), and a pivot pin (14, 15) inserted into the through-opening (13), one free end (16) of which engages in a guide groove (18) in a driving arrangement, and the opposite free end (17) of which is inserted into an abutment (21) associated with the housing (4) and is held in a tilting arrangement.

A support extending about an axis has an axial cavity, adapted to receive a pin fixed to the workpiece, and has retention elements for retaining the pin axially. The retention elements comprise two claws with curved profiles and opposing concavities, which are inserted so that they can slide in respective mutually opposite slots of the support in order to translate between an open position, in which they do not interfere with the insertion/extraction of the pin, and a closed position, in which they engage a circumferential groove of the pin that has been inserted into the support, in opposing positions. The claws are functionally interconnected in an opening/closing relationship by an actuation screw which is positioned so as not to interfere with the pin and has threaded ends which engage corresponding threaded holes which are provided in the claws.

A device for positioning motor vehicle parts in the production or manufacture of motor vehicles. The device includes a main frame, at least one main module configured to be disposed on the main frame, at least one interchangeable first docking plate configured for releasable connection to the main module, and a plurality of first receptacles, arranged on the interchangeable first docking plate, configured to hold the motor vehicle parts at a predefined position during the production.

The invention relates to a monitoring arrangement (12) for monitoring the clamping quality of a workpiece carrier clamped in a clamping device (3, 40, 49) as well as a clamping system with clamping device (3, 40, 49) and such a monitoring arrangement (12). The monitoring arrangement comprises at least two sensors (A1-A4) for the independent detection of the clamping quality of a clamped workpiece carrier or workpiece. The monitoring arrangement also comprises a transmitting device (14) and a receiving device (21), wherein the transmitting device (14) is constituted such that it transmits the determined or calculated parameter or parameters redundantly to the receiving device (21).

A clamping module for a machine tool is proposed. The clamping module includes: a body having a mount hole that a pull stud enters; a plunger configured to clamp or unclamp the pull stud by sliding forward or backward radially from a center of the mount hole; a plunger pin protruding from a side of the plunger and configured to freely rotate; and a clamp plunger having a guide groove configured to move the plunger forward and backward by interfering with the plunger pin while moving up and down inside the body, in which the guide groove has a first guide face for moving forward the plunger to a clamping position and a second guide face for moving backward the plunger to an unclamping position; and the first guide face is an arc-shaped curved shape having a uniform radius of curvature.

A clamping device for clamping an insertion nipple (7), including a clamping element (11) which can be axially moved, by a drive motor (9) via a screw mechanism (13), between an open position in which the insertion nipple (7) can be introduced into a receiving opening (8) of the clamping device and withdrawn from the same, and a clamping position in which the insertion nipple (7) introduced into the receiving opening (8) is retained in the same. The clamping device has an impulse unit (12) with a rotary part (40) which is mechanically coupled to the rotor (31) of the drive motor (9), and by which, for each revolution, a rotary impulse can be transmitted, at least once, to an impulse-receiving part (41) of the impulse unit (12) via the screw mechanism (13), in order to axially move the clamping element (11).

The invention discloses a synchronous self-locking pneumatic adaptive fixture used for the machining of annular thin-walled parts, belonging to the technical field of mechanical machining. The synchronous self-locking pneumatic adaptive fixture includes a zero point positioning system, a base body, a plurality of pressure plate mechanism assemblies, a plurality of columns, a plurality of support mechanism assemblies and a plurality of adaptive support body assemblies. Among them, the pressure plate mechanism assemblies complete the axial compression of the workpiece through the lever force increasing mechanisms and the orthogonal self-locking mechanisms. And the support mechanism assemblies complete the radial support of the workpiece through the rod slider mechanisms and the orthogonal self-locking mechanisms. The invention not only has high clamping efficiency and good stability, but also can ensure the reliable clamping and safe machining of the workpiece when the air source is disconnected.

The invention relates to to object holding and positioning system that is used for the purposes of clamping, locking, fixing, positioning, conveying, gripping, holding, pushing or pulling the object in the fields of machine tools, machining centers, turning machine, transfer line, metal machine, robot, robot arms, robot hands, rotary tables, fixtures etc. and that enables the holders (T) holding the objects (P) to be locked on the machine tables or robots by means of the link elements (S) and at the same time to be locked.

A constraining assembly for a processing machine (1) is proposed that has a plate-shaped base (2) with at least one receiving hole (3) and at least one constraining bolt (4) for directly or indirectly constraining workpieces that are to be processed, wherein the constraining bolt (4) is placed in the receiving hole (3) in the base such that it can be removed therefrom, and wherein the base (2) has a receiving space (5) in which there is at least one actuating element (6) that can move axially, with which numerous lever elements (7) can be actuated to axially move the constraining bolt (4) in the receiving hole (3) in order to clamp and secure, or release, the constraining bolt (4). A constraining bolt (4) for a constraining assembly, as well as a processing machine (1) with such a constraining assembly, and a method for operating the constraining assembly, are also proposed.

The invention relates to a clamping device and is designed for releasably clamping a supporting body on which a workpiece can be arranged. The clamping device has a main body with receiving bores each for receiving a clamping bolt of the supporting body. Each clamping body can be moved linearly along the longitudinal axis thereof between a clamping position and a release position. The movement from the release position into the clamping position and/or conversely from the clamping position into the release position can be effected by means of an actuation device. Each clamping body has a clamping end which protrudes into an associated receiving bore in the clamping position. The longitudinal axes of the clamping bodies form a plurality of intersection points in a common projection plane parallel to which the longitudinal axes extend. In a preferred embodiment, at least three or four intersection points are formed. More particularly, four clamping bodies can be present, each with a longitudinal axis, wherein four intersection points are formed, in each of which two of the available longitudinal axes intersect.