Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam, wherein a direct measuring unit (4) is provided for determining a position and/or a travel distance of at least one moveable component (5) of the apparatus (1).

Abstract: Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise consolidation of layers of a build material (3) which can be consolidated by means of an energy source, comprising a dose module (5) and a build module (6) and an application unit (8), wherein the application unit (8) is adapted to convey build material (3) from a dose plane (10) provided by the dose module (5) to a build plane (11) of the build module (6), wherein at least one buffer module (15) is provided, wherein the application unit (8) is adapted to convey build material (3) from a buffer plane (17) to the build plane (11), which buffer plane (17) is provided by the buffer module (15) in an operational state of the apparatus (1) in which the dose module (5) is not available, in particular during an exchange of the dose module (5), wherein the buffer plane (17) is smaller than the dose plane (10).

Abstract: An injection-molding device for producing a hollow-formed plastic object, at least comprising a mold for the primary shaping of the plastic object, an injection device for at least partially introducing a flowable polymer melt into a cavity within the mold and a fluid injection device for introducing a pressurized fluid and for driving a projectile through the polymer melt introduced into the cavity, the mold comprising a mold wall and a mold core that is arranged at least partially within the mold wall, the projectile being formed at least partially in such a hollow-formed manner that it is arranged on the mold core and is movable along a longitudinal extent of the mold core on the latter. A projectile injection process for producing a hollow-formed plastic object with this injection-molding device and a hollow-formed plastic object produced by this process.

Abstract: A method for evaluating discrete measurement data sequences of an ultrasonic flow measuring device having a recording frequency and ultrasound signal, includes determining time position or height of a maximum of a sinusoidal profile of a time sequence of evaluation values, determined as part of a measurement data sequence or cross-correlation of two sequences recorded at different positions of the device by determining a maximum evaluation value of the time sequence and evaluation values thereof adjacent thereto. Initial values, including an initial maximum value and time, are determined by quadratic fit of evaluation values. Output values including output time describing the position or output height describing the height of the maximum are determined by a determination relationship setting output values in relation with initial values and a calculation quantity formed from selected evaluation values for known recording frequency and known signal frequency and based on a known sinusoidal profile.

Abstract: Plant (1) for additively manufacturing at least one three-dimensional object, comprising at least one process station (2) for an additive manufacturing process, wherein at least one functional component (4, 5), preferably a lifting device for a powder module (7), of the process station (2) is at least partially enclosed by a housing structure (3) of the process station (2), wherein the process station (2) is coupled or can be coupled with at least one powder module (7), wherein the housing structure (3) comprises at least one opening (6) for loading and/or unloading the at least one powder module (7) into or from the process station (2), wherein a platform (8) is provided that is arrangeable or arranged adjacent to the at least one opening (6), wherein the platform (8) comprises at least one positioning unit (10) with at least one positioning surface for positioning a module carrier (12) which is adapted to carry the at least one powder module (7)

Abstract: Method for additively manufacturing at least one three-dimensional object (2) by means of successive layerwise selective irradiation and consolidation of build material layers (3) applied in a build plane (BP) of an apparatus (1) for additively manufacturing three-dimensional objects (2) by means of at least one energy beam (5), wherein at least one build material layer (3) which is to be selectively irradiated and consolidated by means of the energy beam (5) comprises at least one build material layer section (11) having a curved shape with respect to at least one extension direction of the build material layer (3).

Abstract: Methods, systems, and apparatus, including computer-readable storage devices, for predictive models for electric power grid maintenance. In some implementations, one or more computers receive data indicating a maintenance action to be performed for a utility system (e.g., an electric power delivery system, a water system, a gas distribution system), a location for the maintenance action, and environmental conditions at the location. In some examples, the one or more computers also receive data indicating a training level, incident history, or health status of a worker assigned to perform the maintenance action. The one or more computers generate outcome scores for the maintenance action using a model generated from records for maintenance performed by multiple utilities. The one or more computers access mapping data indicating a mapping of the multiple types of potential outcomes with a plurality of maintenance plan elements.

Abstract: Plant (1) comprising at least one apparatus (2-4) for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy source, which plant (1) comprises at least one module (5) separably connected or connectable with the apparatus (2-4), wherein the plant (1) comprises at least one tunnel structure (7) through which the at least one module (5) is moveable in a tunnel transport direction (10).

Abstract: Build material application device for additively manufacturing a three-dimensional object, the build material application device comprising: at least one blade-like build material application member; at least one support unit for supporting the blade-like build material application member, wherein the support unit comprises at least two support unit members defining a receiving section for receiving a blade-like build material application member, a first support unit member is moveably supported relative to a second support unit member between a first operating position, in which a holding force is exertable or exerted on a blade-like build material application member received in the receiving section, and a second operating position, in which no holding force is exertable or exerted on a blade-like build material application member received in the receiving section.

Abstract: Some embodiments may include a multi-stage converter comprising: a branch connected between a positive busbar and a negative busbar; and a control device. The branch has two arms connected in series. The arms each comprise a series circuit including a plurality of two-pole submodules, an energy store, and a communication connection to the control device. The communication connection transmits state of charge of the energy store and a switching instruction for the respective submodule. For at least a subset of the submodules, the communication connection comprises a common communication connection with a plurality of insulation paths having an insulation capability in each case of at most 5 kV.

Abstract: A strain gauge for measuring force and strain is provided that has reduced susceptibility to interfering electromagnetic fields. The strain gage includes a first insulation layer, which has a top side, a resistance element, which is arranged on the top side of the first insulation layer, a second insulation layer, which is arranged on the resistance element and which is joined to the first insulation layer at least in some sections, and an electrically conductive layer, which is arranged on the second insulation layer.

Abstract: Method for determining position data for an apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective consolidation of layers (17-19, 21-23) of a build material (3) arranged in a build plane (4) essentially extending in x- and y-direction, which build material (3) can be consolidated by means of an energy source, wherein the build material (3) is carried by a carrying element (9) of a carrying unit (8), wherein the carrying element (9) is essentially movable in z-direction, wherein the z-direction is essentially perpendicular to the x- and y-direction, wherein position data relating to an x- and/or y-position of the carrying element (9) are determined for at least one z-position.

Abstract: Apparatus (1) for additively manufacturing at least one three-dimensional object (2) by means of successive layerwise selective irradiation and consolidation of layers of build material (3) which can be consolidated by means of at least one energy beam (4), comprising: —a process chamber (7) in which a process gas stream chargeable or charged with non-consolidated particulate build material is generated during operation of the apparatus (1); —a streaming channel structure (16) comprising at least one streaming channel element (15) for a respective process gas stream the streaming channel element (15) communicating with a process gas stream inlet (9a) and/or a process gas stream outlet (9b) of the process chamber (7); —a particle separation device (18) configured to separate non-consolidated build material from the process gas stream streaming through the at least one streaming channel element (15).

Abstract: A machine (10) for machining workpieces with optical quality has at least one workpiece spindle (12), which rotatably drives a workpiece (L) to be machines about a workpiece axis of rotation (C). A swivel head (14) located opposite the workpiece spindle, is pivotable about a pivot axis (B), and bears at least two tool spindles (16, 18), each of which rotatably driving at least one machining tool (T1, T2, T3) about a tool axis of rotation (D, D?). The workpiece spindle and the swivel head (14) are adjustable relative to one another along three mutually perpendicular linear axes (X, Y, Z). One axis (Y) extends parallel to the pivot axis (B). Another axis (Z) extends parallel to the axis (C) of workpiece rotation. At least one tool spindle is attached to the swivel head with its tool axis of rotation (D?) extending parallel to the pivot axis (B).

Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective consolidation of layers of a build material, comprising a build material removal device (3) with at least one build material removal unit (4) adapted to remove non-consolidated build material (5) surrounding an additively built object (2), wherein the build material removal device (3) comprises a build material removal chamber (6) delimiting a build material removal volume (7), wherein the build material removal chamber (6) is arranged or arrangeable above the object (2), wherein the object (2) is successively moveable into the build material removal chamber (6), wherein the at least one build material removal unit (4) is adapted to remove non-consolidated build material (5).

Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of build material (3) which can be consolidated by means of an energy beam (4), the apparatus (1) comprising: at least one chamber (8) in which build material depositions (3?) are built during operation of the apparatus (1), at least one carrying device (12), the carrying device (12) comprising at least one carrying element (12b) being moveably supported in at least one degree of freedom of motion within the at least one chamber (8), a cleaning device (14) assignable or assigned to the at least one chamber (8), the cleaning device (14) being adapted to remove respective undesired build material depositions (3?) from the at least one chamber (8), the cleaning device (14) comprising at least one cleaning element (14a) being connectable with the carrying element (12b).

Abstract: Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), the apparatus (1) comprising: a support construction (5); at least one functional unit (6-10) of the apparatus (1) being supported by the support construction (5); the at least one functional unit (6-10) is moveably supported relative to the support construction (5), whereby the at least one functional unit (6-10) is moveably supported between an operating position in which the at least one functional unit (6-10) is positioned inside the support construction (5) and a service position in which the at least one functional unit (6-10) is at least partially positioned outside the support construction (5).

Abstract: Powder module (1) for an apparatus for additively manufacturing three-dimensional objects, the powder module (1) comprising a powder chamber (6) having a power chamber volume (7) and a carrying device (9), the carrying device (9) comprising: a carrying unit (8) being moveably supported along a motion axis between a first position, particularly a lower end position, and a second position, particularly an upper end position, relative to the powder chamber (6), a drive unit (10) for generating a drive force for moving the carrying unit (8) between the first position and the second position or vice versa, a coupling unit (11) for coupling the carrying unit (8) with the drive unit (10), and a second extension state, particularly corresponding to the second position of the carrying unit (8), a guiding unit (12) surrounding the coupling unit (11).

Abstract: Build material application device (6) for an apparatus (1) for additively manufacturing three-dimensional components by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), the build material application device (6) being configured to apply a layer of build material (3) in a build plane (7) of a respective apparatus (1), the build material application (6) device comprising at least one build material application member (10, 11), wherein the at least one build material application member (10, 11) is at least partially additively manufactured by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4).

Abstract: Powder module device (1) for an apparatus for additively manufacturing three-dimensional objects by successive layerwise selective irradiation and consolidation of layers of a powdered build material (2). The device includes a powder module (3), comprising a powder module base body (6) to receive a powdered build material (2), comprising wall elements delimiting a build material receiving volume (9) for receiving a powdered build material (2) and an opening (10) for introducing powdered build material (2) into the build material receiving volume (9); a lid (4), comprising a lid base body (11) connected to the powder module base body (6) so as to close the opening (10) of the powder module base body (6) in a closed state of the powder module device (1); and a sealing device (5) configured to seal between the powder module (3) and the lid (4) in the closed state of the powder module device (1).