A tool holder includes a tubular body having a shank on a first axial end portion, a tool gripping portion on a second axial end portion, and an elastic segment interposed between the shank and the tool gripping portion in the axial direction of the body. The elastic segment is more elastically deformable along the axial direction and around a circumferential direction of the tubular body than the shank and the tool gripping portion owing to a plurality of voids that extend through the elastic segment from an outer peripheral side of the tubular body to an inner peripheral side of the tubular body. Each of the voids includes segments that extend around the circumferential direction and along the axial direction of the tubular body.

A lathe fixture for machining a hub is characterized in that a power chuck (10) is installed inside a base (5), a positioning connecting block (6) is installed on the power chuck (10), a fan-shaped claw (7) is installed on the positioning connecting block (6), a pressing block (18) is installed on the base (5), and a first support plate (16) is arranged; the shell (2) is arranged in a back cavity of the base (5) from bottom to top, the force transmission shaft (4) penetrates through the base (5), the force transmission rod (3) is fixedly arranged in a groove of the shell (2), the first support plate (16) and the second support plate (14) are respectively arranged at the front end and the rear end of the shell (2), the balance block (15) is fixed between the first support plate (16) and the second support plate (14) through two guide posts (17), the spring (13) is arranged in the groove of the balance block (15) and the second support plate (14), and the cover plate (1) is fixedly arranged at the lower end of the shell (2); the invention provides a clamp with a centrifugal force compensation mechanism.

A fixing device for securing a thin-walled component according to an embodiment includes: a support; a pressing portion provided on the support and including: a pressure generator located at a center of the support; and a plurality of pressure transmitters arranged around the pressure generator and extending in a radial direction of the thin-walled component; and a plurality of elastic members connected to the plurality of pressure transmitters, wherein the plurality of pressure transmitters are configured to move the plurality of elastic members in the radial direction.

A fixing device for securing a thin-walled component according to an embodiment includes: a support; a pressing portion provided on the support and including: a pressure generator located at a center of the support; and a plurality of pressure transmitters arranged around the pressure generator and extending in a radial direction of the thin-walled component; and a plurality of elastic members connected to the plurality of pressure transmitters, wherein the plurality of pressure transmitters are configured to move the plurality of elastic members in the radial direction.

A chuck apparatus for the fastening to a working spindle (2) of a tool machine, with a chuck body (8) comprising a receptacle (7) for the working spindle (2), with at least two chuck jaws (9) which can be adjusted radially to the body axis, and with a drive ring (10), for whose rotation taking place in the circumferential direction a drive (11) is provided, comprising a structure is formed on the drive ring (10) on its outer circumference or its inner circumference for each chuck jaw (9) and which serves for its adjusting. The invention furthermore relates to a rapid replacement system (1) with the chuck apparatus (3) as a base flange (4) and with a replacement flange (5).

A chuck apparatus for the fastening to a working spindle (2) of a tool machine, with a chuck body (8) comprising a receptacle (7) for the working spindle (2), with at least two chuck jaws (9) which can be adjusted radially to the body axis, and with a drive ring (10), for whose rotation taking place in the circumferential direction a drive (11) is provided, comprising a structure is formed on the drive ring (10) on its outer circumference or its inner circumference for each chuck jaw (9) and which serves for its adjusting. The invention furthermore relates to a rapid replacement system (1) with the chuck apparatus (3) as a base flange (4) and with a replacement flange (5).

A high-precision tensioning device is provided. The high-precision tensioning device is composed of a stepping motor, an encoder, a harmonic reducer, a rotary table, connecting rods, contacts, force sensors, a rotary table connecting piece, a gasket, a nut, bolts, a set screw, a shell and an end cover. The tensioning device provided by the disclosure can achieve closed-loop control on a tensioning force in order to improve the tensioning precision of the tensioning device; and as long as machining and assembling errors meet design requirements, stable synchronous tensioning of three contacts can be ensured, and the location precision of a hub is improved.

A high-precision tensioning device is provided. The high-precision tensioning device is composed of a stepping motor, an encoder, a harmonic reducer, a rotary table, connecting rods, contacts, force sensors, a rotary table connecting piece, a gasket, a nut, bolts, a set screw, a shell and an end cover. The tensioning device provided by the disclosure can achieve closed-loop control on a tensioning force in order to improve the tensioning precision of the tensioning device; and as long as machining and assembling errors meet design requirements, stable synchronous tensioning of three contacts can be ensured, and the location precision of a hub is improved.

A securement device for a press tool including an angular exterior body having a side wall. A multitude of ratcheting bodies are located around a top edge of the exterior body. The ratchets include a ratchet bar. The ratchet bar has a plurality of ratchet grooves that allow the ratchet bars to be slide inward toward the interior of the exterior body and to be locked into place. An interior body is located within the exterior body such that it can be moved about and provide extra support for the ratchets.

Each jaw includes a master jaw with serrations and a top jaw, with serrations, to be fastened to a T-nut. The support groove includes a first keyway into which the key is fitted, whereas the top jaw includes a second keyway into which a tip of the key is fitted. A gap exists between the key and each of the first keyway and the second keyway. The key is inclined or twisted with respect to both the first keyway and the second keyway.