Abstract: A tool holder for holding a tool has at least one sensor for measuring an operating parameter of the tool holder or the tool during the operation thereof and generating measured value signals which are fed to a signal processing unit for evaluation. The sensor is a surface acoustic wave sensor operating according to acoustic wave principles and its measured value signals are readable in a contactless manner by means of radio waves. The surface acoustic wave sensor requires no current supply circuit but instead draws transmission energy required for transmission of the measured value signals to the signal processing unit from a high frequency interrogation signal, that is transmitted by radio waves from the signal processing unit and is received by the surface acoustic wave sensor.

Abstract: A chuck for a rotatable tool, such as a drill, a screw tap and the like has a chuck sleeve receivable in a machine and having a central receptacle, a sleeve provided for a tool and releasably inserted in the receptacle, the sleeve having a central main passage for a cooling and/or lubricating medium and grooves for supplying the cooling and/or lubricating medium in a longitudinal direction and outwardly of the tool, the sleeve having an axial opening adopted to extend over a whole length of a shaft of the tool for holding the shaft, the grooves for the cooling and/or lubricating medium in the sleeve being provided on an inner side of the axial opening and extending axially over a whole length of the sleeve, the grooves at one end communicating with the central passage in the chuck sleeve and at another end being axially freely open.

Abstract: A tool holder comprises a receptacle having one end connectable with a machine spindle, to a receptacle and the like and an opposite end, a head provided on the opposite end and having a coaxial cylindrical head opening, a housing received non-rotatably and axially longitudinally displaceable in the head opening and having a coaxial cylindrical housing opening, a quick exchange insert for a tool insertable in the housing opening and coupleable with the housing, and an inner signal device reacting to a relative movement between the head and the inserted quick exchange insert to produce a disturbance signal which identifies a damaged or a destroyed tool.

Abstract: A tool holder, particularly a fast exchange chuck preferably for thread cutting, thread shaping and the like has a receptacle having one end receivable in a machine spindle, a machine tool receptacle and the like, and another opposite end provided with a head having a coaxial cylindrical head opening, a housing received and guided in the cylindrical head opening non-rotatably but displaceably in a longitudinal direction and provided with a coaxial cylindrical housing opening, a fast exchange insert insertable in the housing opening a torque-transmitting unit for transmitting torque between the head and the housing and including a head longitudinal groove provided in the head, a housing longitudinal groove provided in the housing, and at least one drive body partially received in each of the longitudinal grooves so as to transmit torque between the head and the housing and to roll during a relative displacement between said head and said housing.

Abstract: A chuck for a tool, a workpiece and the like has a chuck body having an inner receptacle, a clamping device accommodated in the inner receptacle and having axially projecting spring regions, the clamping device having two ends which are axially supported and being axially compressible for clamping an element in an interior of the clamping device and an element for applying a compressing force to the clamping device at a front end of the chuck body.

Abstract: A threading apparatus has a rotatable and axially movable driving part, a driven part which is axially displaceable relative to the driving part and adapted for driving a threading tool, a switchable form-locking coupling device including a switching member connected with the driven part and provided with coupling members and at least one coupling part driven by the driving part and having coupling elements. The driven part with the switching member and the at least one coupling part are axially relatively displaceable so that the at least one coupling part with the coupling elements is positionable with the coupling members in form-locking coupling engagement with the driven part or in a not driven intermediate position. The switching member is connected with the driven part in an axially not-displaceable manner and coupled form-lockingly in a circumferential direction and drives the driven part.