A device for heat-treating shrink chucks for shank tools includes a receiving device for a shrink chuck, a heat treatment unit, and a measuring/computing unit for temperature measurement. The measuring/computing unit has a temperature sensor measuring a shell temperature of a shrink chuck in the receiving device, and a reflection sensor. The measuring unit applies a current test pulse before heat treatment on the shrink chuck in the heat treatment unit. A time/current curve ascertained for the test pulse is taken as a magnetic fingerprint for the shrink chuck in the heat treatment unit. An item of geometrical information for the shrink chuck is ascertained using the magnetic fingerprint. A reflection measurement is performed on the shrink chuck in the heat treatment unit. A temperature measurement on the shrink chuck performed by the temperature sensor in the heat treatment unit is corrected by the reflection measurement.

A shrink fit adapter for a collet chuck has a rear holding area that can be mounted inside a collet chuck and a front receiving area for holding a tool shank. A through opening runs from a front face of the receiving area to a rear face of the holding area. A clamping area extends into the rear holding area. Here, the adapter is formed with a plurality of slots, which extend radially outward from the through opening and are distributed over the circumference. The slots are arranged in a central area of the through opening and the front ends of the slots are spaced apart from the front face of the receiving area.

An induction heating device for a shrink-clamping and/or unshrink-unclamping of tools into and/or out of tool holders has an induction heating unit with at least one first inductor and at least one second inductor, which is preferably realized separately from the first inductor, wherein the first inductor and the second inductor are configured to respectively expand at least a portion, in particular different portions, of the tool holder by inductive heating in a shrink-clamping and/or unshrink-unclamping process, and has an electric supply unit, wherein the inductors are configured to output respectively different energies to different subregions of a tool holder, which are in a heating operating respectively encompassed by the inductors, as one of the inductors has more windings than the other inductor, in particular by at least 10%, preferably by at least 20% and preferentially by at least 30% more windings, and/or as the electric supply unit is at least configured to operate the first inductor and the second inductor in different manners.

Tool holder has a first section adapted to be connected to a machining center and a tool holding section comprising a bore with a surface defining an inner diameter of the bore. Dispersed around the surface of the bore and at least partially embedded in the surface of the bore is a joining compound having a Young's modulus greater than a Young's modulus of the surface of the bore.

A tool holder having a main body for coupling the tool holder to the spindle of a machine tool and having a clamping surface connected thereto for clamping a tool, characterized in that the tool holder has at least one portion shaped in one piece by primary shaping, which in its interior has one or more cavities that form an enclave in the portion shaped by primary shaping.

A high-speed tool holder includes: a tool shaft for accommodating a tool at its first end, and a machine clamping part which is integrally connected to the tool shaft and forms an interface for clamping in the machine; with the tool shaft being substantially truncated circular cone-shaped, a first diameter at the first end with the tool insertion opening being smaller than a fifth diameter at the second end at the machine clamping part; and a portion of the substantially truncated circular cone-shaped tool shaft having an outwardly bulging, preferably spherical, shape between the tool insertion opening and the machine clamping part.

A cutter arbor damping device includes a rod body, a damping mechanism, and a heat-resistance element. The rod body includes a connecting end having a connecting hole, a receiving room, and a blocking wall between the connecting hole and the receiving room. The connecting end is adapted for being heated to expand the connecting hole to receive a cutter inserted therein wherein the cutter is positioned when the connecting end is cooled down. The damping mechanism is received in the receiving room and includes a vibration absorption portion contacting an inner wall of the receiving room. The heat-resistance element is disposed between the damping mechanism and the inner wall of the receiving room and includes at least one longitudinal protrusion and at least one longitudinal gap which are located between the blocking wall and the damping mechanism.

A tool holder is provided comprising a base body for coupling with a drive spindle that can be driven rotatingly, whereon a clamping chuck for clamping a tool is provided, further comprising a damping element arranged between the base body and the clamping chuck, wherein the damping element is made of an elastomeric material or of a shape memory alloy, and wherein the clamping chuck is solely connected to the base body by means of the damping element.

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 device for clamping and unclamping tools in a collet comprises a tool holder, a collet and a movable tensioner. The tool holder has a machine side and a tool side that is configured to accommodate a tool shank of a tool. The collet is arranged for clamping the tool shank inside the collet, the collet having a conical outer surface, which rests against a correspondingly shaped inner surface of the tool holder. The tensioner is configured to effect an axial movement of the collet with respect to the tool holder when the tool holder is thermally expanded, for clamping and unclamping the collet with the tool shank therein. The tensioner is arranged inside the tool holder on the machine side of the collet. A method is used to clamp tools in a collet of a tool holder.