Abstract: Disclosed herein are methods and systems for non-invasively determining the fill level in a container. Further disclosed herein are methods and systems for determining the fill level in a container using a sensor device attached to the outside of the container to generate and detect an audio signal and using the detected audio signal in combination with container specific information and a data driven model to determine the fill level in the container.

Abstract: A switching device for a test stand for electrical components has a support structure and a first contact block attached thereto. The first contact block has first connections for connecting a battery to be tested; one or more second connections for connecting a high-voltage tester; and third connections for connecting a function tester. A second contact block that is a contact bridge and is movable relative to the first contact block is included. The second contact block, in a first contact position, connects first connections to at least one second connection. The first connections are bridged in the first contact position by a bridge element of the first contact block and connected to at least one second connection via the bridge element or, in a first contact position, connects first connections to second connections, wherein the second contact block, in a second contact position, connects first connections to third connections.

Abstract: A device for testing a battery, having a transport system, wherein the transport system is configured for receiving the battery, for transporting the battery to a test position, and for transporting the battery out of the test position. The device includes an interface, wherein the interface is configured to supply the battery arranged in the test position with electric power; and a fire protection hood, which can be lowered onto the transport system, for shielding the battery from the surroundings.

Abstract: The invention relates to a spindle device (100), comprising: a tool holder (14) for holding a tool or a tool interface; a spindle drive comprising a spindle rotor (130) for rotationally driving the tool holder (14); an electrical load (160), which is arranged on the side of the spindle rotor (130) facing the tool holder (14); and a coil unit (140) for supplying electrical energy to the electrical load (160); wherein the coil unit (140) is arranged on the side of the spindle rotor (130) facing away from the tool holder (14).

Abstract: A method for processing a workpiece on a numerically controlled machine tool by a tool includes the steps of: controlling a relative movement of the tool relative to the workpiece for processing the workpiece, producing an ultrasonic vibration of the tool by an ultrasonic generator, detecting at least one sensor signal outputted from the ultrasonic generator and identifying a change in the material at the workpiece while controlling the relative movement of the tool relative to the workpiece on the basis of the at least one sensor signal outputted from the ultrasonic generator.

Abstract: The present invention relates to a tool holder for accommodating a tool, having a housing, a transmitting element, movably arranged in the housing, for transmitting a movement to the tool accommodated at a first end portion of the tool holder, a fastening portion at a second end portion of the tool holder, located opposite the first end portion of the tool holder, for fastening the tool holder to a machine tool, and a coolant line portion for conducting coolant from the second end portion of the tool holder to the first end portion of the tool holder, wherein the coolant line portion has a first section extending through the transmitting element, wherein the first section is configured at least in part as a bore in the transmitting element.

Abstract: A method for processing a workpiece on a numerically controlled machine tool by a tool includes the steps of: controlling a relative movement of the tool relative to the workpiece for processing the workpiece, producing an ultrasonic vibration of the tool by an ultrasonic generator, detecting at least one sensor signal outputted from the ultrasonic generator and identifying a change in the material at the workpiece while controlling the relative movement of the tool relative to the workpiece on the basis of the at least one sensor signal outputted from the ultrasonic generator.

Abstract: The invention relates to a spindle device (100), comprising: a tool holder (14) for holding a tool or a tool interface; a spindle drive comprising a spindle rotor (130) for rotationally driving the tool holder (14); an electrical load (160), which is arranged on the side of the spindle rotor (130) facing the tool holder (14); and a coil unit (140) for supplying electrical energy to the electrical load (160); wherein the coil unit (140) is arranged on the side of the spindle rotor (130) facing away from the tool holder (14).