The present disclosure provides an external clip-on fixture. The external clip-on fixture may include a support structure (1) and a first elastic member (2). The first elastic member (2) may be configured to sealedly wrap the support structure (1) and expand inward along a radial direction under actions of an inflating and deflating device. The external clip-on fixture of the present disclosure is small in size, light in weight, simple in structure, and low in cost. Fragile and soft objects with different sizes, regular or irregular external shapes, such as a column shape, a bottled shape, etc., may be stably clamped within a certain range without damaging the clamped objects.

A hydraulic expanding chuck for receiving and clamping a tool with a shank. The hydraulic expanding chuck has a main body, which on an axial side has a clamping section that extends along a longitudinal central axis of the expanding chuck and has a clamping part lying in a neck region and in which are formed a central receiving opening for receiving a tool shank and a chamber system to which a fluid pressure can be applied. The chamber system comprises at least one pressure chamber, which is separated from the receiving opening in the radial direction by an expansion wall yielding elastically under the fluid pressure, and which can be supplied with fluid pressure by means of at least one axial pressure channel running from a piston clamping mechanism accommodated in a clamping region of the hydraulic expanding chuck.

The present invention provides an apparatus for working oppositely arranged first and second surfaces of a pressing section. The apparatus comprises an upper working unit forming a top wall and an upper sidewall extending downwardly from the top wall; a lower working unit forming a bottom wall and a lower sidewall extending upwardly from the bottom wall; and an inflatable bellows movable between an inflated state and a deflated state by inflation with an inflation medium. The upper sidewall is arranged to guide the lower sidewall to thereby form an internal space enclosed by the top wall, the bottom wall, the upper sidewall, and the lower sidewall. The inflatable bellows is arranged in the internal space to facilitate variation of the distance between the top wall and the bottom wall during relative movement between the upper sidewall and lower sidewall by inflation of the inflatable bellows.

A reducing sleeve for fastening a machining tool in a tool holder is described. Said reducing sleeve comprises a reducing sleeve body, which comprises a first tool-side end and a second tool holder-side end. In addition, at least one coolant supply channel is provided in the reducing sleeve body. Furthermore, a multifunctional interface is arranged at the second end and is designed for coupling to a sealing unit and a safety unit. Additionally presented is a modular system for providing a reducing sleeve assembly, which comprises such a reducing sleeve, a sealing unit, and a safety unit. In addition, a machining assembly with a tool holder, a reducing sleeve, and a machining tool is presented.

A tool holder has a base element, a deformable receiver for clamping a tool and at least one locking element configured for preventing an axial extraction of the tool from the tool holder through engaging a corresponding opposite element at the tool. The at least one locking element is integrally configured in one piece with the receiver.

A tool holder includes a main body, a deformable receptacle for clamping a tool, and at least one blocking element which, in order to prevent axial migration of the tool out of the tool holder, is configured to engage in a corresponding counterpart element on the tool and is arranged at the receptacle. In order to allow particularly high concentricity of the tool holder and stable fastening of the clamped-in tool, and at the same time to ensure easy production, the receptacle has two spaced-apart clamping portions, between which the at least one blocking element is arranged.

A sensor module for a tool holder for a cutting tool, such that when the sensor module is arranged to the tool holder having a cutting tool connected thereto, an axial portion of the cutting tool is positionable in a predefined rest position with respect to the sensor module. The sensor module includes at least one position sensor, wherein, when the sensor module is arranged to the tool holder having a cutting tool connected thereto, the position sensor is located radially spaced from the axial portion of the cutting tool for measuring deflection of the cutting tool with respect to the rest position. The disclosure further relates to a tool holder, a cutting tool, a cutting assembly, and a method for measuring deflection of a cutting tool.

A hydraulic-expansion chuck for clamping a workpiece includes an annular body, an inner circumferential surface, an outer circumferential surface, and an axis of rotation. The chuck also includes a channel integrated into the annular body for receiving a pressurized hydraulic fluid to clamp the workpiece. The channel has an annular peripheral channel section formed radially between the inner circumferential surface and the outer circumferential surface. The chuck also includes a holding contour with a plurality of expansion lugs disposed on the inner circumferential surface and a plurality of further channel sections branching off from the channel. At least one of the plurality of further channel sections extends into a respective lug of the plurality of expansion lugs, and the hydraulic-expansion chuck is manufactured by an additive manufacturing process.

A clamping device for clamping a workpiece to a machine spindle includes at least one clamping bush which extends around a central axis and has at least one clamping surface for the workpiece and at least one clamping body. The clamping bush on a side remote from the clamping surface at least one support surface which extends about the central axis along a helical line. On a side facing, the clamping bush comprises at least one support surface which extends about the central axis along a helical line with a predefined pitch and is inclined at an angle of inclination to a direction axial to the central axis. The clamping body includes a hydraulic chamber in the interior of the clamping body. The clamping device also includes a displacement element, and at least one pressure generator. A clamping force is generatable between the clamping bush and workpiece.

A micro-gripper includes a support to which are articulated fingers and an actuating diaphragm, adjusting the spacing of the fingers. The support being circular, the fingers may be arranged in any number around it, and the diaphragm delimits a chamber with the support assembled to an equipment for distributing fluids, the pressure of which elastically deforms the diaphragm and controls a simultaneous movement of variations in spacings of the fingers. If the diaphragm is conical and the fingers link up all around, an independence of the movements of the fingers remains.