University of Münster

Felder Kg

Nemak, S.a.b. De C.v.

Schoeller-Bleckmann Oilfield Technology Gmbh & Co Kg

Schoeller-Bleckmann Oilfield Technology Gmbh

Eneres Ltd. Harneys Services (Cayman)

Friedrich Bleicher

Thomas Weiler

Helmut Caudr

Jan Scheil

Christoph Viechtbauer

Ugis Groza

Christoph Lechner

Christoph Habersohn

Martin Fuchs

Johannes Bernreiter

Wolfgang Radkowitsch

Klaus Metzner

The invention relates to: sensor modules for e.g. a tool holder, wherein the sensor unit is integrated as a structural entity; tool or machine elements designed with such sensor modules; and a machining/machine tool comprising such a sensor module. The sensor modules have a sensor system for detecting system states or operating states which occur during the machining of a workpiece.

Sensor module, machine element or tool element, and machine tool

A safety system is provided for a machine tool which has a frame and a tool. The safety system has a clamping device and a motion device. The clamping device is movable by the motion device from a working position, in which the tool is extended and can be used for working, to a safety position, in which the tool is retracted. The motion device has a first magnetic means connected to or arranged on the tool and a second magnetic means connected to or arranged on the frame, such that movement of the tool by the motion device from the working position to the safety position can be triggered and/or at least partially performed by magnetic force.

Safety system for a machine tool

A method is provided for detecting a substance, preferably human tissue, in the vicinity of a mobile tool, wherein the substance to be detected has different electrical characteristics from a material that can be processed by the mobile tool. In the method, a change is detected in a capacitance formed by the tool and a counter electrode that is electrically insulated from the tool. A periodic change in the capacitance is detected and the change is produced by the presence of the substance in a region in relation to the tool and by a periodic change in a geometrical characteristic of the tool in this region as the tool moves.

Method for detecting a substance

With the method according to the invention, mould parts for casting moulds for light metal casting can be treated such that the danger of crack formation in the region of the surface sections of the mould part coming into contact with the light metal melt during casting is reduced to a minimum. This is achieved in that by means of nitriding treatment on the mould part a nitride-hardened edge layer adjoining its free surface is generated which is harder than the inner core region of the mould part and comprises a diffusion layer adjoining the core region and a compound layer located on the diffusion layer and adjoining the free surface of the mould part and in that at least one section of the surface of the mould part is mechanically processed by machine hammer peening, in the case of which a hammer tool, which, at a certain impact frequency, carries out an impact movement along a movement axis which is aligned in relation to the free surface at a certain acute angle, is guided continuously over the free surface of the mould part following a track determined in a preceding design step such that the compound layer is removed by the impacting stress in the impact region of the hammer tool.

Method of treating the surfaces of mould parts for casting moulds consisting of a steel material

A spindle arrangement for a machine tool, comprising a spindle for driving a tool and at least one actuator for exciting vibration of the tool, characterized in that the spindle arrangement is provided with a compensation device for at least partly compensating the inertia forces produced by the vibration excitation in the spindle region.

Spindle arrangement

The invention relates to a device () and a method, comprising a workpiece-receiving portion () for receiving a workpiece () to be mechanically machined. At least one vibrating device () is connected to the workpiece-receiving portion (), and the vibrating device () causes the workpiece-receiving portion () to vibrate, the vibration of the workpiece-receiving portion () having a frequency that is lower than the frequency of ultrasound. The vibrating device () has a vibrating body () to which a compensating mass () that vibrates in the opposite direction is associated.

Vibrating device with workpiece receiving portion and compensating mass

The invention relates to a drill () and a device or a method for drilling boreholes in workpieces (), in which a periodically acting radial force () is exerted on the drill head () of the drill (). The drill head () of the drill () has a cutting edge () extending only over a part of the diameter D () and is designed to have a lateral, V-shaped chip removing groove or bead () and with a channel () with an outlet opening () in the drill head () for supplying a drill fluid (). On a drill side () of the drill head () opposite the bead () between a first and a second cylinder casing partial surface () of the drill head () a rear offset () is formed which reduces the cross section of the drill head () in relation to an enclosing cylinder casing surface () of the drill head ().

Growing community of inventors

Vienna, Austria

Friedrich Bleicher