The present invention provides a work piece chuck of manipulator in the field of mechanical technology. The chuck comprises a chuck sleeve and an ejector pin set within the chuck sleeve. An elastic clamping element is provided at the front end of the chuck sleeve. The ejector pin could move between a first position and a second position along the axial direction of the chuck sleeve. When the ejector pin is in the first position, the outer circumference of the ejector pin extrudes the clamping element to distort and expand outward to form an expansion state. When the ejector pin is in the second position, the outer circumference of the ejector pin is out of contact with the clamping element to restore the clamping element. The chuck has a number of advantages including firm connection, high reliability and high use value.

Disclosed is a mounting device (6) including a receiving opening (8) with a circular inner locating surface (10) which is coaxial with the axis of rotation (3) and serves for engagement with radially outer vertices (24) of the polygon profile of a holding pin (23). Arranged adjacent to the inner locating surface is a positioning disk (14) which has an opening (15) coaxial with the axis of rotation (3) and of such polygonal shape and size that the polygon profile of the holding pin (23) engaging in the opening (15) is supported in the opening (15) in a manner preventing relative rotation.

This invention concerns a clamping device for firmly holding a part to be clamped at a clamping recess in which the clamping device is arranged. The clamping device comprises a collet with a first external protrusion for engagement with an internal recess in an inner peripheral area of the part that is to be clamped and with a second external protrusion for engagement with an internal recess in an inner peripheral area of the clamping recess. At least one of the first external protrusion or the second external protrusion comprises a first external taper or a second external taper for pulling the part to be clamped axially into the clamping recess by a radial outward movement of the collet or a section of the collet and an operation stud including an external tapered section for effecting the radial outward movement of the collet. The connection between the operation stud and the collet is self-locked and pre-loaded after a clamping movement of the operation stud in axial direction that locks and pre-loads the external taper of the operation stud and the collet or a part between the collet and the operation stud with each other. The invention includes a method for a part to be clamped in a clamping recess.

This invention concerns a clamping device for firmly holding a part to be clamped at a clamping recess in which the clamping device is arranged. The clamping device comprises a collet with a first external protrusion for engagement with an internal recess in an inner peripheral area of the part that is to be clamped and with a second external protrusion for engagement with an internal recess in an inner peripheral area of the clamping recess. At least one of the first external protrusion or the second external protrusion comprises a first external taper or a second external taper for pulling the part to be clamped axially into the clamping recess by a radial outward movement of the collet or a section of the collet and an operation stud including an external tapered section for effecting the radial outward movement of the collet. The connection between the operation stud and the collet is self-locked and pre-loaded after a clamping movement of the operation stud in axial direction that locks and pre-loads the external taper of the operation stud and the collet or a part between the collet and the operation stud with each other. The invention includes a method for a part to be clamped in a clamping recess.

A chuck device includes a chuck main body, an exchange member, an axial direction regulating mechanism, and a circumferential direction regulating mechanism. The axial direction regulating mechanism has a circumferential groove section, which extends in the circumferential direction, that is recessed into one of the chuck main body and the exchange member and a radially protruding section, which is able to protrude in the radial direction, that is disposed in the other of the chuck main body and the exchange member. The circumferential direction regulating mechanism has an axially recessed section, which is recessed in the axial direction, that is disposed in one of the chuck main body and the exchange member and an axially protruding section, which is able to protrude in the axial direction, that is disposed in the other of the chuck main body and the exchange member.

A clamping fixture for clamping a component, in particular a workpiece or tool, having a number of clamping jaws, distributed along a periphery, which are connected by appropriate elastic flexural webs to a main body, wherein the clamping jaws are adjustable by an axially movable actuating device in a radial direction from a release position into a holding position, which clamping fixture is characterized in that the flexural webs, in their release position, are inclined in relation to an axially parallel direction radially in a direction of their respective holding positions.

A chuck device includes a chuck main body, an exchange member, an axial direction regulating mechanism, and a circumferential direction regulating mechanism. The axial direction regulating mechanism has a circumferential groove section, which extends in the circumferential direction, that is recessed into one of the chuck main body and the exchange member and a radially protruding section, which is able to protrude in the radial direction, that is disposed in the other of the chuck main body and the exchange member. The circumferential direction regulating mechanism has an axially recessed section, which is recessed in the axial direction, that is disposed in one of the chuck main body and the exchange member and an axially protruding section, which is able to protrude in the axial direction, that is disposed in the other of the chuck main body and the exchange member.

Some embodiments are directed to a fixing apparatus that includes a threaded adaptor, an arbor having a flange portion and a shaft portion, and a draw cylinder disposed such that rotation of the threaded adaptor moves the draw cylinder in axially upward and downward directions. A collet can be disposed around a periphery of the arbor so as to be coaxial with the draw cylinder, such that movement of the draw cylinder in the axially downward direction causes the draw cylinder to contact the collet and thereby cause the collet to also move in the axially downward direction. The collet can include axially extending channels that define fingers therebetween and interior coaxial surfaces that are configured to communicate with exterior coaxial surfaces of the arbor such that axially downward movement of the collet moves the fingers in a radially outward direction to thereby increase an exterior diameter of the collet.

A clamping fixture for clamping a component, in particular a workpiece or tool, having a number of clamping jaws, distributed along a periphery, which are connected by appropriate elastic flexural webs to a main body, wherein the clamping jaws are adjustable by an axially movable actuating device in a radial direction from a release position into a holding position, which clamping fixture is characterized in that the flexural webs, in their release position, are inclined in relation to an axially parallel direction radially in a direction of their respective holding positions.

An I.D. collet has a housing with a hollow bore and an undercut portion; a taper screw slidable into and out of the hollow bore of the housing and having a conical head; a spindle having a hollow bore in alignment with the hollow bore of the housing for receiving the conical head of the taper screw into and out of the hollow bore of the spindle such that the conical head enlarges the diameter of the spindle; and a draw nut assembly threadably connected to the taper screw and having tangs abutting the undercut portion of the housing when the spindle reaches a preset location in the hollow bore of the spindle to prevent further enlargement of the spindle when the tangs come into contact with the undercut portion of the housing.