Method and device for producing components in a beam melting installation
First Claim
1. A method for producing objects in an additive manufacturing build process in which a layer of powder is spread over a build area with selective melting or sintering of one layer after another of powder in building up of an object, comprising the steps of:
- providing an additive manufacturing machine using a powder build material, the additive manufacturing machine including the build area in which the object is generated through layerwise manufacture according to a build process control, and providing a supply of powder to the build area, the additive manufacturing machine further including a coating device for spreading a powder layer across the build area from the supply, the coating device having a bottom surface which is moved in a plane parallel to the surface of the build area to thereby spread the powder build material in the powder layer;
using a sensor on the coating device to determine a surface topography of a previous powder layer through detected movement of the coating device out of the plane of the coating device across the previous powder layer caused by engagement of the coating device with the surface of the previous powder layer; and
then adjusting at least one parameter of the additive manufacturing build process in view of an irregular movement of the coating device during the additive manufacturing build process as determined by the sensor.
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Accused Products
Abstract
The invention relates to a beam melting installation and method for producing components thereof, in which a component to be produced is produced layer-wise, wherein, a coating slide moves across a build platform, a powder layer is applied onto the build platform and already produced component layers by a blade fastened on the coating slide, and melt traces are subsequently inscribed in the powder layer by means of a directed beam, so that the powder melts in the melt trace and bonds to underlying component layers, wherein, during the travel of the coating slide in order to apply a new powder layer, perturbations of the travel of the coating slide or components connected thereto are metrologically detected, and in particular the beam melting installation is controlled and/or regulated as a function of the detected measured values. The invention furthermore relates to a device for retrofitting beam melting installations.
30 Citations
7 Claims
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1. A method for producing objects in an additive manufacturing build process in which a layer of powder is spread over a build area with selective melting or sintering of one layer after another of powder in building up of an object, comprising the steps of:
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providing an additive manufacturing machine using a powder build material, the additive manufacturing machine including the build area in which the object is generated through layerwise manufacture according to a build process control, and providing a supply of powder to the build area, the additive manufacturing machine further including a coating device for spreading a powder layer across the build area from the supply, the coating device having a bottom surface which is moved in a plane parallel to the surface of the build area to thereby spread the powder build material in the powder layer; using a sensor on the coating device to determine a surface topography of a previous powder layer through detected movement of the coating device out of the plane of the coating device across the previous powder layer caused by engagement of the coating device with the surface of the previous powder layer; and then adjusting at least one parameter of the additive manufacturing build process in view of an irregular movement of the coating device during the additive manufacturing build process as determined by the sensor. - View Dependent Claims (2, 3, 4, 5)
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6. An additive manufacturing machine for producing objects in an additive manufacturing build process in which a layer of powder build material is spread over a build area with selective melting or sintering of one layer after another of powder in building up of an object, the machine including the build area in which the object is generated through layerwise manufacture according to a build process control, and a supply of powder build material to the build area, the additive manufacturing machine further comprising:
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a coating device for spreading a powder layer across the build area from the supply, the coating device having a bottom surface which is moved in a plane parallel to the surface of the build area to thereby spread the powder build material in the layer; and a sensor on the coating device to determine a surface topography of a previous powder layer through detected movement of the coating device out of the plane of the coating device across the previous powder layer caused by engagement of the coating device with the surface of the previous powder layer, wherein the additive manufacturing machine is configured to adjust at least one parameter of the additive manufacturing build process to in view of an irregular movement of the coating device constituting an undesired deviation to the additive manufacturing build process as determined by the sensor. - View Dependent Claims (7)
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Specification