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).

A device (1) for holding a tool (3), and the device (1) has a cavity (2) for the tool (3) and at least two channels (6) designed to allow the passage of a lubricant. Each channel has an inlet opening (7) and an outlet opening (8) for the lubricant. The at least two channels (6) are helically formed around the bore (2) and have a cross-section which increases in size from the inlet opening (7) to the outlet opening (8).

An arrangement for machining workpieces includes a machining tool (1) having a cutting edge region (3) and a shank (30), the shank (30) having a conical shank region (5) and a receiving region (4) arranged adjacent to the shank region (5), a tool extension (2) having a conical receiving region (21), the conical shank region (5) and the conical receiving region (21) being designed complementary to each other such that the machining tool (1) is held between the conical shank region (5) and the conical receiving region (21) exclusively by means of a force-fitting connection in the tool extension (2), a tool holding device (15) for receiving the tool extension (2). The tool holding device (15) is adapted to be connected to a rotatable spindle of a machine tool. The cutting edge region (3) has a maximum diameter D1 in a plane E perpendicular to a center axis X.

Damping elements for tool chucking systems for damping vibrations and shocks that occur during machining in the case of force-fitting clamping of tools in a tool receptacle or on the tool itself. At least one damping element consisting of a shape memory alloy having a mechanical effect is provided in a tool chucking system or on the tool itself, such that the damping element provided in the chucked state in the force flow of the chucked elements is present in a reversible and hysteresis-dependent state by way of a mechanical force action and the associated crystalline conversion via the pretensioning of said damping element and leads to dissipation of mechanical energy. The mechanical energy to be damped is a cyclical vibration or represents a non-cyclical overload which is transmitted in the form of shocks.

A receiver comprises an interior space comprising a longitudinal central axis and a receiving end, a first set of first structures, and a second set of second structures. The first set of the first structures is positioned closer to the receiving end of the interior space than the second set of the second structures. The first set of the first structures has a first axial compliance coefficient along the longitudinal central axis of the interior space. The second set of the second structures has a second axial compliance coefficient along the longitudinal central axis of the interior space, such that the first axial compliance coefficient is greater than the second axial compliance coefficient.

A shrink fit tool holder assembly has a holder, a tool, and two fastening units. The holder has an axis, an inserting portion, and a fastening hole defined through the inserting portion. The inserting portion has two assembling holes communicating with the fastening hole. Each one of the two assembling holes has an extending axis inclined relative to the axis of the holder. The two extending axes of the two assembling holes are a pair of skew lines. The tool has a shank section inserted in the fastening hole of the holder. The shank section has two engaging grooves. The two fastening units are respectively inserted into the two assembling holes and respectively engage with the two engaging grooves to prevent the tool from sliding or rotating relative to the holder.

Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement.

A task of insertion of a tool is continued even when the insertion of the tool is failed in a shrink fitting method. A shrink fitting system for shrink-fitting a tool to a holder includes: a heating device that heats the holder; an insertion device that inserts the tool into the heated holder; and a control device for the shrink fitting system. The insertion device includes a sensor that detects a failure of insertion of the tool into the holder. Based on the failure of the insertion of the tool into the holder being detected, the control device performs at least one of outputting, to the insertion device, a command for adjusting an insertion position of the tool or for replacing the tool and outputting, to the heating device, a command for re-heating the holder.

The invention relates to a tool holding device comprising a tool holding body for securing, in a fixed manner, a rotary tool comprising a shaft, provided with a clamping section and a receiving opening for the shall of the tool, a coolant feeding device for pressurized fluid, at least one coolant guiding device for guiding the coolant into a clamped tool shaft. The coolant guiding device is designed as at least one flat groove on an inner side of the receiving opening, joining to the front side on a free end of the tool holding body and directly adjacent to the tool shaft in the surroundings of the tool holding device or a coolant storing chamber and or collecting chamber is provided in the region of the free end of the tool holding body, to which the at least one coolant guiding device joins. The coolant storing chamber and or collecting chamber is connected by means of an annular gap to the surroundings of the tool holder device. The coolant storing chamber and/or collecting chamber and the annular gap are defined at least partially by the work shaft.

A tool holder with a main part, a deformable receiving portion for clamping a tool, and at least one blocking element which is designed to engage into a corresponding counter element on the tool in order to prevent the tool from moving axially out of the tool holder. The at least one blocking element is integrally formed with the receiving portion. A clamping system having such a tool holder and a method for producing a receiving portion for such a tool holder are also described.