Method and Device for Producing a Three-Dimensional Object in Layers

摘要

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.

主权项

1. Method for manufacturing a three-dimensional object by layer-wise solidification of a building material at the posi-tions in the respective layer corresponding to the cross-section of the object to be manufactured by introducing energy by means of electromagnetic radiation, characterized in that
a calculation, which stresses will occur inside of the object during the layer-wise manufacturing, is carried out and in that the object to be manufactured obtains one or more additional structures in addition to the required shape of the object to be manufactured when a critical value is exceeded, wherein the position, at which an additional structure is attached, is calculated before the manufacturing of the object, wherein the calculation takes into consideration the volume of the object and the specific material properties and wherein moreover the calculation takes into consideration that partial volume of the object that is present in already manufactured layers and/or that partial volume of the object that is located in not yet manufactured layers.