A method for checking the quality of a workpiece, a surface section of the workpiece is finished with a manufacturing device. A reference signal representing a time dependent difference between an ideal tool position and a real tool position of a tool of the manufacturing device in a reference phase is determined when finishing the workpiece. A test signal representing a time dependent difference between an ideal tool position and a real tool position of a tool of the manufacturing device in an operation phase is determined when finishing the workpiece. A mean value and a standard deviation value from the reference signal is determined. Data points of the test signal are determined, where the test signal deviates from the mean value more than a defined multiple of the standard deviation value. The surface quality of the workpiece is estimated by using the determined data points.

In a normal operation of a roll stand (e.g. 4) of a roll train, working rolls (10) of the roll stand (4) are adjusted to a roll gap (s4) by adjusting a control element position (p4) of a control element (14) of the roll stand (4), such that the working rolls (10) roll the metal band (5). To determine the control element position (p4) to be adjusted, a calibration value (sC4) of the respective roll stand (4), further status parameters (P4) of the roll stand (4) and a target roll gap (s4*) are specified to a model (15) of the roll stand (4). The model (15) determines the control element position (p4) to be adjusted therefrom. In the calibration operation, a control element position (p4) is initially adjusted such that the metal band (5) passes through the roll stand (4) without being rolled. The control element position (p4) is varied such that the working rolls (10) roll the metal band (5). A thickness (d) of the metal band (5) is detected by a downstream thickness-measuring device (9). The thickness (d), further status parameters (P4) and the control element position (p4) are supplied to the model (15), which determines the calibration value (sC4) of the respective roll stand (4) therefrom. Subsequently, normal operation is resumed and the previously determined calibration value (sC4) is used to determine control element positions (p4) to be adjusted as the calibration value (sC4) of the respective roll stand (4).

A debris control apparatus is provided for selective assembly and disassembly with a cutting tool. The debris control apparatus includes a debris control enclosure and a mounting assembly for mounting the enclosure to the cutting tool. The enclosure comprises a vacuum opening assembled and in fluid communication with a vacuum conduit, the vacuum conduit connected to a vacuum source, for extracting the debris from the enclosure. The enclosure and vacuum conduit may be sized, shaped, and contoured to reduce recirculation of debris within the enclosure.

An electronic device and associated method are used to detect a fault in a spinning mill and to estimate one or more sources of the fault, the spinning mill including a plurality of textile machines that sequentially process textile materials. With the electronic device, the method receives parameter information of one or more of the textile machines and of one or more of the textile materials. The electronic device detects faults and location of the faults by identifying parameter information of the textile materials deviating from reference information. The electronic device is used to access configuration information of the textile machines and knowledge-based information related to possible sources of faults in the spinning mill. The method incudes using the electronic device to apply parameter information, configuration information, and knowledge-based information to one or more machine-learning algorithms to estimate the sources of the faults.

The invention relates to a dental milling machine which has a closed milling chamber (12). Said milling chamber has an air inlet opening and an outlet which are substantially opposite each other relative to the milling chamber and generate an air stream. Said air stream sweeps over a machining area in which a milling tool subjects the workpiece to a milling machining step. One end of the milling chamber (12), in particular the front end, has a door that can be opened. The base (42) of the milling space (12) runs at least partially at an angle and in particular is rounded off and the outlet (40) is connected to the lowest region of the base (42).

A method for checking the quality of a workpiece, a surface section of the workpiece is finished with a manufacturing device. A reference signal representing a time dependent difference between an ideal tool position and a real tool position of a tool of the manufacturing device in a reference phase is determined when finishing the workpiece. A test signal representing a time dependent difference between an ideal tool position and a real tool position of a tool of the manufacturing device in an operation phase is determined when finishing the workpiece. A mean value and a standard deviation value from the reference signal is determined. Data points of the test signal are determined, where the test signal deviates from the mean value more than a defined multiple of the standard deviation value. The surface quality of the workpiece is estimated by using the determined data points.

A self-configuring computer-controlled fabrication apparatus that utilizes no fewer than four user changeable tools concurrently installed to fabricate a three-dimensional component from digital design data out of a variety of materials using additive and/or subtractive methods. User interchangeable tools perform different tasks including paste extrusion, filament extrusion, inkjet deposition, laser curing, laser etching, milling, cooling, curing, inspection, and component placement, among others. Each tool, that is selected and installed by the user for each job, contains operational information regarding its performance in nonvolatile memory such that the system can read, then adapt, the build process to the set of tools currently installed.

A miller, a non-transitory computer readable medium, and a method for milling a multi-layered object. The method may include (i) receiving or determining milling parameters related to a milling process, the milling parameters may include at least two out of (a) a defocus strength, (b) a duration of the milling process, (c) a bias voltage supplied to an objective lens during the milling process, (d) an ion beam energy, and (e) an ion beam current density, and (ii) forming a crater by applying the milling process while maintaining the milling parameters, wherein the applying of the milling process includes directing a defocused ion beam on the multi-layered object.

A milling device for milling an antenna structure out of the metal layer of a flexible product, while the product is being passed through a milling gap between a milling cutter and a die, using a light emitter to output a light strip that crosses through the milling gap in or transversely to a running direction of the product, wherein the light strip is dimensioned, and the milling cutter and the die are intended to be arranged, such that the milling cutter and the die shadow the light strip at the two longitudinal edges thereof, before a light receiver receives the light strip, and using the light receiver to output a signal that reproduces the width of the milling gap to a controller, and outputting an adjusting signal at least to an adjusting drive that influences the width of the milling gap between the milling cutter and the die.

The present invention relates to a method and a device for controlling an ultrasound tool unit for machining a workpiece on a machine tool. For this, a plurality of parameter sets are stored on a storage device of a control device of the machine tool. When controlling an ultrasound transducer of the ultrasound tool unit received on a work spindle of the machine tool on the basis of a sensor signal input into a controller by means of a generator operated by the controller, on the basis of a first parameter set, which is associated with the ultrasound tool unit and sets the operation of the controller, an operating setting of the controller is switched by changing the first parameter set setting the operation of the controller on the basis of a second parameter set, which is associated with the ultrasound tool unit, of the plurality of parameter sets stored on the storage device.