Abstract: A method for manufacturing a gear toothing on a metallic workpiece and a tool device for calibration of a gear toothing inlet and/or a gear toothing outlet of a gear of the metallic workpiece. The method includes producing the gear toothing by forming manufacturing and performing a compression process to calibrate a gear toothing inlet and/or a gear toothing outlet of the gear toothing, wherein a gear tooth shape and a gear tooth length are adjusted during the compression process. The tool device includes a workpiece location for accommodating the workpiece, an axially movable die selectively engageable with the gear toothing, the die supporting the gear toothing and predefining the gear tooth shape to be adjusted on the gear toothing inlet and/or on the gear toothing outlet, and at least one axially movable compression ring which calibrates the gear toothing inlet and/or gear toothing outlet by a compression process.

Abstract: A method for manufacturing a gear toothing on a metallic workpiece and a tool device for calibration of a gear toothing inlet and/or a gear toothing outlet of a gear of the metallic workpiece. The method includes producing the gear toothing by forming manufacturing and performing a compression process to calibrate a gear toothing inlet and/or a gear toothing outlet of the gear toothing, wherein a gear tooth shape and a gear tooth length are adjusted during the compression process. The tool device includes a workpiece location for accommodating the workpiece, an axially movable die selectively engageable with the gear toothing, the die supporting the gear toothing and predefining the gear tooth shape to be adjusted on the gear toothing inlet and/or on the gear toothing outlet, and at least one axially movable compression ring which calibrates the gear toothing inlet and/or gear toothing outlet by a compression process.

Abstract: Measuring apparatus and measuring method for detecting ferromagnetic particles which are movably arranged in a liquid volume, characterized by a magnetic means for generating a magnetic field in the liquid volume, a measuring means for the total electrical resistance of the liquid volume with the ferromagnetic particles therein and a means for checking the function of the measuring apparatus with at least one low-value resistor of between 50 and 500? for carrying out a resistance measurement. The invention also describes a magnetic means with an electromagnet which, when in need of cleaning, can be demagnetized by means of correct energization (measured using the normal resistance measurement) and can be magnetized again when started up again.

Abstract: A measuring device for a measurement quantity is provided. The measuring device includes, an electronic measuring unit provided and designed to capture at least one measurement signal of an ignition electrode, which is arranged at least partially in a combustion chamber of a fluid-flow machine, the measurement signal being dependent on the measurement quantity. At least one protective device is provided to protect at least the electronic measuring unit from high voltages.

Abstract: Measuring apparatus and measuring method for detecting ferromagnetic particles which are movably arranged in a liquid volume, characterized by a magnetic means for generating a magnetic field in the liquid volume, a measuring means for the total electrical resistance of the liquid volume with the ferromagnetic particles therein and a means for checking the function of the measuring apparatus with at least one low-value resistor of between 50 and 500? for carrying out a resistance measurement. The invention also describes a magnetic means with an electromagnet which, when in need of cleaning, can be demagnetized by means of correct energization (measured using the normal resistance measurement) and can be magnetized again when started up again.

Abstract: A component with inner teeth (3) and outer teeth (6). The component (7) comprising a basic body (2) provided with the inner teeth (3) and a sheet component (5) provided with the outer teeth (6). The sheet component (5) is connected to the basic body (2), during the manufacturing process, by positive interlock in both the tangential and radial directions.

Abstract: A pressure-measuring device and a pressure-measuring method for measuring a pressure in a combustion chamber of a turbomachine are provided. The pressure-measuring device includes at least one sensor device for measuring an ion current at at least one point inside the combustion chamber.

Abstract: A roll-forming process for producing longitudinally toothed profiled bodies in a pot-shaped cylindrical workpiece in which, during a first rolling process (A), the pot-shaped cylindrical workpiece (1) is moved through a first rolling stage with a bottom (3) of the workpiece being rolled first. During at least one further rolling process (B, C), the workpiece (1) passes through at least one further rolling stage with an open end of the workpiece being rolled first.

Abstract: A planetary gear unit (1) having two guide discs (2, 3) that are arranged parallel to one another and include perforations for accommodating pins (4) which have journals (5, 6) and shoulders arranged on the end sides. The shoulders have circumferential cutting edges (11, 12) and the pins (4) are cut into the guide discs (2, 3) by way of the cutting edges (2, 3).

Abstract: A roll-forming process for producing longitudinally toothed profiled bodies in a pot-shaped cylindrical workpiece in which, during a first rolling process (A), the pot-shaped cylindrical workpiece (1) is moved through a first rolling stage with a bottom (3) of the workpiece being rolled first. During at least one further rolling process (B, C), the workpiece (1) passes through at least one further rolling stage with an open end of the workpiece being rolled first.

Abstract: A component with inner teeth (3) and outer teeth (6). The component (7) comprising a basic body (2) provided with the inner teeth (3) and a sheet component (5) provided with the outer teeth (6). The sheet component (5) is connected to the basic body (2), during the manufacturing process, by positive interlock in both the tangential and radial directions.

Abstract: A circuit arrangement for monitoring the state of signal systems, particularly traffic light systems monitors different signal states as to the admissability or inadmissibility thereof in a simple manner without the necessity of carrying out manual wiring manipulations given a change of the signal conditions in adaptation to changed conditions or given an expansion of the signal system to be monitored. For this purpose, test signals which indicate test signal states are fixed in a memory and are processed with the signals indicating the respectively existing actual signal state of the signal transmitters in at least one microprocessor in such a manner that each signal indicating an actual state is compared with all test signals which are called up step-by-step in succession from the memory.