Abstract: A device for determining a spindle status of a spindle of a machine tool includes a detector for detecting sensor data of the spindle for a defined time window. A processing unit analyses the sensor data through artificial intelligence by calculating a defined feature of the sensor data for the defined time window and determining a spindle status from the sensor data. An output member outputs the determined spindle status.

Abstract: A system includes an oil filling device for a transmission, the transmission having a recess. The oil filling device includes a slotted bushing which is provided with an axially uninterrupted recess through which a cone unit projects, the cone unit having an external thread onto which a nut is screwed, on the side of the slotted bushing facing away from the transmission. The cone unit includes a region that widens in the direction of the transmission, and/or a cone region which presses the slotted bushing against the transmission, in particular in the axial region covered by the recess.

Abstract: A system includes an oil filling device for a transmission, the transmission having a recess. The oil filling device includes a slotted bushing which is provided with an axially uninterrupted recess through which a cone unit projects, the cone unit having an external thread onto which a nut is screwed, on the side of the slotted bushing facing away from the transmission. The cone unit includes a region that widens in the direction of the transmission, and/or a cone region which presses the slotted bushing against the transmission, in particular in the axial region covered by the recess.

Abstract: A device for determining a spindle status of a spindle of a machine tool includes a detector for detecting sensor data of the spindle for a defined time window. A processing unit analyses the sensor data through artificial intelligence by calculating a defined feature of the sensor data for the defined time window and determining a spindle status from the sensor data. An output member outputs the determined spindle status.

Abstract: In a method for detecting self-excited vibrations of a separating machine tool or of a tool of the separating machine tool or of a workpiece machined by the separating machine tool, detecting while the workpiece is machined by the separating machine tool, a measurement signal representing a physical variable; forming from the measurement signal a reference signal and a filtered filter signal; generating, with an envelope curve demodulator, from the reference signal an envelope curve reference signal and from the filtered filter signal an envelope curve filter signal; comparing the envelope curve reference signal with the envelope curve filter signal and generating at least one first comparison value defined as a ratio of a magnitude of the envelope curve reference signal and a magnitude of the envelope curve filter signal, and detecting the self-excited vibrations based on the first comparison value.