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 inductor 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 operation 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 T-shaped tool is configured by fastening a head having cutting blades to a cylindrical shank, the shank is made of cemented carbide and has a tapered male thread formed at a tip end portion thereof, the tapered male thread becomes smaller in diameter toward the tip end, and the head is made of steel and has a tapered female thread formed therein, and the tapered female thread comes into engagement with the tapered male thread.

A tool includes a cutting insert with a shank, which extends along a cutting insert longitudinal axis, and with at least one cutting edge, wherein at least a part of the cutting insert is a first material and further includes a tool holder which extends along a holder longitudinal axis and includes on an end-face end a cutting insert receptacle for receiving the cutting insert shank, wherein the cutting insert receptacle is a cup-shaped recess. The tool further includes an attachment element which is connected to the cutting insert and extends in a circumferential direction around the cutting insert shank, wherein at least a part of the attachment element is a second, different material. The tool also includes a fastening element for fastening the cutting insert on the tool holder, wherein, in a mounted state, the fastening element contacts the attachment element to fasten the cutting insert on the tool holder.

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.

The invention relates to a tool holding fixture (1) for rotationally driven tools (2), said tool holding fixture comprising a rotationally symmetrical holding body (3) which has a front clamping portion (4) having a holding opening (5) for a tool shaft (6) of the tool (2), and a rear holding portion (7) to be held in a work spindle of a machine tool. To achieve a reduced mass, a lower mass moment of inertia and at the same time high stiffness, a sleeve (11) consisting of a fiber-reinforced plastic is arranged at least in the front clamping portion (4).

The present invention relates to a device for heating adapters for mounting tools for use in machine tools, comprising a base part in which an adapter for inserting or removing the tool can be arranged such that the insertion direction of the tool extends towards the base part, and a heating part which is designed for heating the adapter arranged in the base part, the base part and the heating part being displaceable relative to one another in the insertion direction of the tool. In this case, the base part comprises a mounting device that is designed for retaining the adapter in a fixed manner on the base part during heating. The invention further relates to a system formed of a device of this kind and an adapter, and to a method for operating the device.

A tool for machining a workpiece. The tool comprises a cutting insert with a shank, which extends along a cutting insert longitudinal axis, and with at least one cutting edge, wherein at least a part of the cutting insert is made of a first material. The tool further comprises a tool holder which extends along a holder longitudinal axis and comprises on an end-face end a cutting insert receptacle for receiving the cutting insert shank, wherein the cutting insert receptacle is designed as a cup-shaped recess in the tool holder. The tool further comprises an attachment element which is fixedly connected to the cutting insert and extends in a circumferential direction around the cutting insert shank, wherein at least a part of the attachment element is made of a second material which differs from the first material. Still further, the tool comprises a fastening element for fastening the cutting insert on the tool holder, wherein, in a mounted state of the tool, the fastening element contacts the attachment element in order to fasten the cutting insert on the tool holder.

A tool head having a shrink-fit chuck (10) that has an axial receiving hole (22), and having a tool (12) that is insertable by way of its cylindrical tool shank (24) into the receiving hole (22), which is open at the front end of the shrink-fit chuck (10), and is fixable therein by thermal shrinking of the shrink-fit chuck (10). The shrink-fit chuck (10) has, in its front end portion, an annular recess (30) that radially widens the receiving hole (22) and is open at the end side, and a function ring (14) is positioned on the tool shank (24), wherein, in the shrink-fitted state, the tool shank (24) is frictionally fixed in the receiving hole (22) and the function ring (14) sits at least partially in the annular recess (30).