Abstract: After the manufacturing of an object by layer-wise solidification from a powder, this object is displaced into a container together with the powder surrounding the object, and is closed by a plate, which is positioned below the object during the manufacturing of the object.

Abstract: An exposure control device serves for equipping and/or retrofitting a generative layer-wise building device. The exposure control device has a first data output interface, at which control commands can be output to the exposure device. The control commands specify one of a plurality of exposure types defined by a predetermined combination of a radiation energy density to be emitted by the exposure device and a scanning pattern with which the radiation is being directed to a region of a layer of the building material. The exposure control device also includes a second data output interface at which an exposure type can be output in real time in relation to a timing of the output of a control command specifying this exposure type.

Abstract: Disclosed is a method of determining a quality indicator of an object that has been manufactured by layer-wise additive manufacturing . The method includes providing a first dataset that is assigned to a process monitoring device, detecting a relative frequency of occurrence of a process irregularity in a layer and of assigning a grade indicator value to the solidified object cross-section in a layer according to the detected relative frequency, generating a second dataset, in which a grade indicator value is assigned to the object cross-section in each of said several layers following upon one another, and determining a quality indicator by using the second dataset (or several further datasets).

Abstract: Powder mixture for use in the manufacture of a three-dimensional object using an additive manufacturing method, wherein the powder mixture includes a first material and a second material, wherein the first material comprises a steel in powder form, wherein the second material comprises a reinforcement material different from the first material, and wherein the powder mixture is adapted to form a composite object when solidified an electromagnetic and/or particle radiation in the additive manufacturing method.

Abstract: A method for producing a three-dimensional object (2) by applying layers of a pulverulent construction material (11) and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material (11) is applied to a support (6) or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam (14) from an energy source (13) sweeps over points on the applied layer corresponding to a cross-section of the object (2) to be produced in order to selectively solidify the pulverulent construction material (11); and a gas flow (18) is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam (14). The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam (14) are adapted to one another at least in one region of the cross-section to be solidified.

Abstract: A method for automatically calibrating a device for generatively producing a three-dimensional object (8) comprises the following steps: irradiating an applied layer of a material (3) or a target by means of a first scanner (14) in order to produce a first test pattern (33) in the material (3) or the target; irradiating the applied layer of the material (3) or the target by means of a second scanner (15) in order to produce a second test pattern (34) in the material (3) or the target; detecting the first and second test patterns (33, 34) by means of a camera (24) and assigning the first and second test patterns (33, 34) to the first and second scanners (14, 15), respectively; comparing the first and/or the second test pattern (33, 34) with a reference pattern and/or comparing the first and second test patterns (33, 34) with one another; determining a first deviation of the first test pattern (33) from the reference pattern and/or a second deviation of the second test pattern (34) from the reference pattern an

Abstract: A device including a gas pressure device providing a variable initial pressure (PA), a fluid container providing a fluid for rinsing an eye, the fluid container being connected to a surgical handpiece to deliver the fluid into the eye at an irrigation pressure (PI) predeterminable by the surgeon. The fluid container is connected to a connecting element on a side which is upper in the operating position, and the fluid container communicates with a gas phase container via a mandrel of the connecting element on a lower side of the gas phase container, and the gas phase container and/or the fluid container exhibit(s) a gas phase and the gas phase communicates with the gas pressure device via the connecting element or a fluid container line, and the irrigation pressure (PI) of the surgical handpiece is adjustable via the variable initial pressure (PA) of the gas pressure device.

Abstract: The invention relates to a device for producing three-dimensional components of a powdery powder material by layered application of the powder material and partial solidification of the powder material of a layer by selectively irradiating points of the layer corresponding to a cross section of the component to be produced by means of at least one energy beam, comprising a construction container for accommodating the powder material, comprising a coating device for the layered application of the powder material, comprising an overflow container for accommodating an unused material residue of a production process, comprising an intermediate container for accommodating the unused material residue of an application process and furthermore for delivery to the overflow container. The invention also relates to a production method with the above device.

Abstract: A metering device serves as an equipping or retrofitting kit for a device for producing a three-dimensional object by means of solidifying, layer by layer, a building material in powder form at those positions that correspond to the cross-section of the object to be produced in the respective layer. The metering device has a metering element, which metering element is rotatable about an axis, preferably an axis of its own, particularly preferably about an, in particular its own, longitudinal axis and which is suitable for dispensing the building material in powder form in a metered manner. The metering element is designed to dispense locally different amounts of powder along the direction of the axis.

Abstract: A method of generating control data for a manufacture of a three-dimensional object comprises the following steps: identifying surface data in a computer-based model of said object that correspond to a surface of the object, which is destined to get into contact with the fluid, determining the flow path adjacent a portion of said surface in said computer-based model, modifying said computer-based model such that support structure data are added to the model, said data specifying a support structure designed to be in contact with said portion of said at least one surface during the manufacture of said object, wherein said support structure data are added to the model such that at least one contact region between the support structure and said portion will essentially extend in parallel to the flow path adjacent said portion, preferably deriving control data for the manufacture of the object from the modified model.

Abstract: Method of manufacturing a three-dimensional object of a building material by an additive layer-wise building method, wherein based on material parameters of the building material and predetermined characteristics of the object to be manufactured, an internal structure of the object having a grid structure calculated, and the three-dimensional object is manufactured with this internal structure by the additive layer-wise building method, so that it comprises the predetermined characteristics.

Abstract: A method is disclosed and includes: for providing a control command set for producing a processing tool by means of an additive layer wise building device, which method comprises at least the following steps: providing computer-based model data (MD) representing at least one sub-surface of an object, which sub-surface is to be processed using a processing tool, generating a computer-based model of the processing tool having an interaction surface interacting with the at least one sub-surface within the scope of a processing process in such a way that the interaction surface in the geometric sense is analogous to the at least one sub-surface of the object to be processed, generating a control command set for an additive layer-wise building device, by means of which control command set the production of the processing tool is implemented on the basis of the computer-based model of the processing tool comprising the interaction surface.

Abstract: A method is disclosed and includes providing a first data set marking an object cross-section, determining whether the length of a connecting line undercuts a specified minimum dimension, generating a second data such that, in the event falling the minimum dimension is undercut, a position lying within an object cross-section on the connecting line is marked as a position not to be solidified or to which a reduced radiation to be supplied, and for a position lying outside of the object cross-section, positions of an object cross-section directly above or below that are adjacent to this position are marked as positions not to be solidified or to which a reduced radiation is to be supplied, and integrating the second data set into the control command set.

Abstract: A recoating unit for equipping and/or retrofitting a device for producing a three-dimensional object by means of selectively solidifying, layer by layer, of a building material in powder form. The recoating unit is configured, depending on its movement in the first direction or in its opposite direction, to receive building material in that chamber, that is the trailing chamber in the respective direction of movement and to spread the building material received in the respective trailing chamber to a uniform layer by means of the respective trailing recoating element.

Abstract: A manufacturing method for generatively manufacturing a three-dimensional object by a layer-by-layer application and selective solidification of a building material includes applying a layer of the building material within a build area by means of a recoater moving in a recoating direction across the build area, selectively solidifying the applied layer of the building material at points corresponding to a cross-section of the object to be manufactured by means of a solidification device, and repeating the steps of applying and solidifying until the three-dimensional object is completed. A local action confined to a region between the recoating unit moving across the build area and the solidification device and/or compaction device moving behind the recoating unit across the build area is performed on the applied layer of the building material.

Abstract: Method for manufacturing a three-dimensional object by a layer-wise solidification of a building material at positions in the respective layer corresponding to the cross-section of the object to be manufactured by introducing energy by means of electromagnetic radiation, wherein a calculation, which stresses will occur inside of the object during the layer-wise manufacturing, is carried out and wherein the object to be manufactured obtains additional structures with respect to the required shape of the object to be manufactured when a critical value is exceeded.

Abstract: An apparatus for manufacturing a three-dimensional object by a layer-by-layer solidification of building material at the points corresponding to the cross-section of the object to be manufactured in a respective layer. The apparatus includes a process chamber in which the object is to be built up layer by layer by selectively solidifying layers of a building material in a build area, a gas supply device, and a recirculating air filter device, wherein the apparatus comprises a pressure stabilization device configured to keep the pressure in the process chamber substantially constant.

Abstract: A method for producing a three-dimensional object on a support by applying layer by layer and selectively solidifying a building material in powder form. The method includes lowering the support to a predetermined height below a working plane, applying a layer of the building material in powder form in the working plane, selectively solidifying the applied powder layer at positions corresponding to a cross-section of the object to be produced and repeating the steps of lowering, applying and selectively solidifying until the object is completed. By doing so, the quantity of applied building material in powder form is reduced in a section in an actively controlled way or substantially no building material in powder form is applied in a section in an actively controlled way.

Abstract: Method for calibrating an apparatus for manufacturing a three-dimensional object by layer-wise selective solidification of building material with the step of generating an substantially periodic first modulation pattern in a first sub-area of the build area, the step of generating an substantially periodic second modulation pattern in a second sub-area of the build area, wherein in the overlap zone, the first modulation pattern and the second modulation pattern form an substantially periodic superposition pattern, whose period is larger than the period of the first modulation pattern and the period of the second modulation pattern, the step of detecting the superposition pattern, and the step of determining the deviation of the position of the superposition pattern on the build area from a reference position.

Abstract: A calibration ledge serves for calibrating a manufacturing device for manufacturing a three-dimensional object by a layer-by-layer solidification of a building material at the points corresponding to the respective cross-section of the object by selectively irradiating layers of the building material with a radiation in a working plane. The calibration ledge has an elongated shape and includes an aperture ledge extending in its longitudinal direction and comprising several aperture openings arranged in a row in the longitudinal direction of the calibration ledge which are more permeable for the radiation of the irradiation device than the region of the aperture ledge surrounding the aperture openings.