Abstract: The induction coil unit for heating a component which is rotationally symmetrical relative to an axis, in particular a tool holder (5), comprises a plurality of coils (19) arranged about the axis (7) of the tool holder (5), with pole elements (2), which are movable radially with respect to the axis (7), of which pole elements each one consists of a stack of pole rods (25) that can be moved relative to one another. A yoke ring (17) connects the pole elements, which, when the coils (19) are excited by alternating current in the tool holder (5), produce a magnetic flux running in the peripheral direction to inductively heat the tool holder (5). The pole rods (25) of each pole element (21) can be moved jointly by means of pinion rollers (29), wherein, however, slide couplings or the like are provided in the drive force transmission path between the individual pole rods so that the pole elements (21) can adapt to different contours of the tool holder (5).

Abstract: An apparatus for clamping a component on a rotating machine part, in particular a balancing machine, having a basic body, having a clamping mandrel, which is arranged in an axially displaceable manner within the basic body, and having a plurality of clamping devices, which can be moved between a release position and a clamping position by axial displacement of the clamping mandrel. In order to make it possible for components to be clamped centrally with repeated accuracy, the clamping devices are designed as clamping segments which can be displaced radially in relation to the centre axis of the basic body above the latter.

Abstract: A device for measuring the rotational imbalance of a specimen, having a spindle unit with a spindle, which is embodied to hold the specimen and to allow it to rotate at a testing speed, a holder suspension by means of which the spindle unit is anchored to the machine base in pendulum fashion such that the imbalance forces occurring during the measurement operation are able to move the spindle unit back and forth in a predetermined measuring direction M, and a sensor arrangement that detects at least one imbalance parameter occurring in the measuring direction M during rotation of the spindle, wherein the spindle unit is supported by means of at least one auxiliary bearing that is only able to transmit forces in the direction of a normal N to the measuring direction M.

Abstract: The invention relates to a tool holder (1) for clamping tools by shrink fit. The tool holder, due to its specific shaping in the area of the shrink-fit head (6) and the shrink-fit base (5) of the tool holder, is less prone to oscillate than known tool holders, therefore allowing inter alia higher speeds so that the cutting capacity, determined by the speed of the tool, the tool feed and the cutting depth of the tool, can be increased and the machine running times required to produce a workpiece can be reduced. The tool holder (1) of the present invention allows to produce and machine workpieces in a substantially more efficient and economical manner.

Abstract: The invention provides a clamping system (1) for a rotary tool (70), for example a milling cutter or drill. The clamping system (1) includes a base element (10), a collet (30) and a clamping nut (50), said clamping nut (50) friction-locking the rotary tool (70) within the base element (10) with the collet (30). In order to avoid a relative rotation of the base element (10) and the collet (30), the clamping system (1) has a form locking anti-twist protection which blocks a rotation of the collet (30) relative to the base element (10).

Abstract: The invention relates to a device (1) for tightening and releasing clamping tools (16), such as draw-in collet chucks, mandrels and the like which allows a torque to be concentrically transferred onto a clamping device, such as a locknut (17), clamping screw or the like without radial stress and without the threaded sections of the clamping device (17) and the collet chuck base (31) or the like being subjected to an unbalanced load. In a preferred embodiment, the device (1) is universally applicable, has an especially simple design and can be rapidly adapted to the respective clamping tools (16).

Abstract: The invention relates to a tool holder with a tool holding fixture, in particular a clamping chuck such as a contracting chuck, a draw-in collect chuck, a hydraulic expanding chuck and a high-precision chuck, and a shank of a tool, in particular a rotary tool, accommodated in it, wherein the tool holder contains a means for preventing the tool from being pulled out, locking it against axial displacement. This pull-out preventing unit comprises at least one locking element and at least one locking groove, which corresponds to the said locking element, receives it and interacts with it in a positively locking manner. In this case, both the locking element and the locking groove are formed at least partly in the manner of a ball head. Preferably, the tool has the locking grooves.

Abstract: The invention relates to a tool holder with a tool holding fixture, in particular a clamping chuck such as a contracting chuck, a draw-in collect chuck, a hydraulic expanding chuck and a high-precision chuck, and a shank of a tool, in particular a rotary tool, accommodated in it, wherein the tool holder contains a means for preventing the tool from being pulled out, locking it against axial displacement. This pull-out preventing unit comprises at least one locking element and at least one locking groove, which corresponds to the said locking element, receives it and interacts with it in a positively locking manner. In this case, both the locking element and the locking groove are formed at least partly in the manner of a ball head. Preferably, the tool has the locking grooves.

Abstract: A tool holder (10) for a tool which can rotate about an axis of rotation (D) comprises a clamping shank (18) which, in an end shank region, has a clamping formation (14) with an accommodating opening (16) which is central in relation to the axis of rotation (D) and is intended for accommodating a retaining shank of the tool, there being provided, on the lateral circumference of the accommodating opening (16), at least one clamping surface for securing the retaining shank of the tool with press-fit action. According to the invention, on an axial section which forms an axial bracing section (VA), the tool holder (10) has a bracing arrangement (20) which, at least during operation of the tool holder (10), subjects the tool holder (10) to a bracing force (Vk) with a bracing force component (Vk) acting in the axial direction.

Abstract: The invention relates to a device for drying a work piece, preferably in the form of a shrink fit chuck, that has previously been subjected to an application of a liquid and is essentially rotationally symmetrical around a longitudinal axis of the work piece; the device has at least one air-conducting device that encompasses the work piece in order to convey an air flow in the direction along the longitudinal axis of the work piece and has at least one blower device that directs a radial air flow at the work piece.

Abstract: The invention relates to a tool holder with a tool holding fixture, in particular a clamping chuck such as a contracting chuck, a draw-in collect chuck, a hydraulic expanding chuck and a high-precision chuck, and a shank of a tool, in particular a rotary tool, accommodated in it, wherein the tool holder contains a means for preventing the tool from being pulled out, locking it against axial displacement. This pull-out preventing unit comprises at least one locking element and at least one locking groove, which corresponds to the said locking element, receives it and interacts with it in a positively locking manner. In this case, both the locking element and the locking groove are formed at least partly in the manner of a ball head. Preferably, the tool has the locking grooves.

Abstract: The present invention relates to a tool holder that either has a modular design, and the modules of which are centered via interfaces, or/and in which a centered interface is provided between the tool and the tool receiver such that high concentricity, and thus a high processing accuracy are achieved. The present invention further relates to a system comprising a tool holder and a tool.

Abstract: A shrink-fit chuck tool holder which comprises: clamping means which are provided centrally with respect to an axis of rotation of the tool holder for holding a shank of a rotary tool, and which define a receiving opening for the shank. The clamping means can be displaced in the radial direction between a release position for insertion or removal of the shank and a clamping position. The clamping means are assigned a clamping surface with a cylindrical contour which, in the clamping position, bears against the outer circumferential surface of the shank. The clamping surface has a helical groove surrounding the axis of rotation or a multiplicity of annular grooves surrounding the axis of rotation, which as seen in the direction of the axis of rotation project towards the axis of rotation and the roof surfaces of which form the clamping surface.

Abstract: A tool holder comprising 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, wherein the at least one locking element is integrally configured in one piece with the receiver.

Abstract: The invention relates to a device for inductive heating of an electrically-conducting component section symmetrical relative to an axis, in particular, a sleeve section of a tool clamping chuck for clamping a tool by means of a press fit, wherein the device has several pole pieces made from a magnetically-conducting material arranged in the circumferential direction around the symmetry axis of the component section introduced as required into the device and an induction device for supplying the pole pieces with magnetic flux such that the magnetic flux in pole pieces which are adjacent in the circumferential direction is opposed.

Abstract: The invention relates to a balancing machine for measuring the rotating unbalance of a tool holder in two different clampings, comprising a spindle which can be set into rotation. The spindle comprises an automatically actuatable coupling, by which the tool holder can be coupled rigidly to the spindle in a first position in order to rotate with the spindle around the rotational axis of the tool holder and the tool holder can be coupled rigidly to the spindle in a second position in order to rotate with the spindle around the rotational axis of the tool holder. The balancing machine also comprises at least one measuring sensor for determining the rotating unbalance of the tool holder rotating in the spindle unit, wherein the device has a brake which retains the tool holder.

Abstract: The present invention relates to a tool holder (1) that either has a modular design, and the modules of which are centered via interfaces, or/and in which a centered interface (9) is provided between the tool (5) and the tool receiver (4) such that high concentricity, and thus a high processing accuracy are achieved. The present invention further relates to a system comprising a tool holder (1) and a tool (5).

Abstract: A device for clamping and unclamping of tools comprising a tool shaft, by which device a sleeve section (2) of a tool holder (1) comprising a centric receiver opening (4) for a shaft (5) of a rotation tool is inductively heated, which sleeve section retains the shaft (5) of the tool seated in the receiver opening (4) in a press fit, and releases it upon heat up, which device comprises an induction coil assembly with at least one induction coil (6), which can be fed by an electric current for heating the sleeve section (2), and which comprises a concentrator body (11), which is magnetically conductive and electrically nonconductive or substantially electrically nonconductive, which concentrates the magnetic flux of the induction coil (6) onto the portion of the tool side end of the sleeve section (2), wherein the concentrator body (11) supports an induction attachment (14) made of electrically conductive material.

Abstract: The invention relates to a balancing device, having a measuring system for determining the rotational unbalance of a test object, comprising a spindle unit with a spindle, which is intended to hold the test object and rotate it at a test rotational speed, and a spindle mounting, by which the spindle unit is movably anchored on the machine base, such that the spindle unit can oscillate in a predetermined measuring direction as a result of the unbalance forces occurring during the measurement operation, and at least one sensor, which upon rotation of the spindle detects at least one unbalance characteristic variable occurring in the measuring direction, and a material removal system for balancing the test object by material removal in a predetermined site. The measuring system and the material removal system are designed such that material can be removed when the test object is held in the spindle.

Abstract: The present invention relates to a low-vibration tool holder (1) with a tool holder base body (2, 3, 4, 6) and a tensioning arrangement (5) which provides axial tensioning of the tool holder base body (2, 3, 4, 6) and which is simultaneously tensioned in a radially flexible way with respect to the tool holder base body (2, 3, 4, 6). This tool holder (1) is less susceptible to vibration than previously known tool holders, which ensures better true running even during operation and in particular when heat-induced expansion of materials occurs, since the clamping arrangement (5) which is integrated in the tool holder (1) is continuously centered with respect to the tool holder base body (2, 3, 4, 6). Furthermore, such a tool holder (1), in particular within a modular design, can be adapted very flexibly to different types of tools and workpiece machining processes.