Haimer Gmbh

Franz Ziegltrum

Thomas Grosch

Eberhard Abele

Ferdinand Keil

Kim-Carolin Landfried

Klaus Hofmann

A device for hydraulically clamping tools or workpieces, a tool holder or workpiece holder for short, has a clamping portion for clamping a tool or workpiece. An interior of the clamping portion has a plurality of chambers which are connected in fluidic communication by way of a channel system. In order to be able to change, in particular increase, the dynamic rigidity of the hydraulically clampable tool/workpiece holder, a central throttle point is arranged in the channel system. The central throttle point has an adjustment element with which a flow cross section in the central throttle point can be changed.

Hydraulically clampable tool holder or workpiece holder

The invention relates to a tool holder () which is embodied for rotation around a tool holder rotation axis (D) and which comprises at its one axial longitudinal end () a tool segment () for receiving a tool, and at its other axial longitudinal end () a coupling segment () for torque-transferring coupling to a machine tool (), a measurement apparatus () for sensing data relating to the operation of the tool holder () being provided on the tool holder (), which apparatus encompasses at least the following components:&#x2014;at least one sensor () supplying a sensed signal;&#x2014;a signal transfer apparatus () for transferring a measured signal;&#x2014;an electrical circuit () connected in signal-transferring fashion to the sensor () and to the signal transfer apparatus (); and&#x2014;an energy supply apparatus () that is connected to the signal transfer apparatus () and to the electrical circuit (). According to the present invention the tool holder () comprises a tool holder main body () that comprises both the tool segment () and the coupling segment (), at least one component from among the sensor (), electrical circuit (), and energy supply apparatus () being received in a recess () in the interior of the tool holder main body ().

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Igenhausen, Germany

Franz Ziegltrum