Position-specific energy input

Abstract

A computer-aided method for providing control data for an additive manufacturing device (1) for producing a three-dimensional object (2), wherein the object (2) is produced by means of the additive manufacturing device (1) by applying a build material layer upon layer and solidifying the build material (15) by supplying radiant energy to locations in each layer that correspond to the cross-section of the object (2) in that layer, by scanning these locations with energy radiation using an energy input device based on a set of energy input parameter values, wherein in a first step (S1) a number of layer data sets are accessed, wherein each layer data set contains a data model of a build material layer to be selectively solidified during production and locations corresponding to an object cross-section (50) are identified in the data model.where a solidification of the build-up material (15) is to take place in the corresponding layer, characterized in that in a second step (S2) in at least one data model of a layer data set at at least one starting point (P1) where a solidification is to take place, the time interval (155) between the time (154) of sampling this starting point (P1) and the time (154) of sampling another marked point (N1) in the number of layer data sets, preferably another marked point (N1) in the layer data set, is determined, in a third step (S3) the number of layer data sets is modified in such a way thatthat the value of an energy input parameter for sampling the at least one output location (P1) and / or the value of an energy input parameter for sampling the other marked location (N1) is specified as a function of the size of their time interval (155) and in a fourth step (S4) the layer data sets modified in the third step (S3) are provided as control data for the production of the three-dimensional object (2) by means of the additive layer manufacturing device (1).

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