| CPC B22F 10/80 (2021.01) [B33Y 50/00 (2014.12); G05B 19/4099 (2013.01); G05B 2219/49023 (2013.01)] | 7 Claims |
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1. A search apparatus for searching for manufacturing conditions of an additive manufacturing apparatus based on a powder bed fusion method, the search apparatus comprising:
a processor; and
a memory, wherein
the processor receives a molding result of a reference sample manufactured by the additive manufacturing apparatus, conditions corresponding to the molding result of the reference sample, evaluation target values of the reference sample, and a search region defined by the conditions and scope of the molding result, and based on settings for the conditions within the search region and on the molding result obtained when the settings are given to the additive manufacturing apparatus or to a control region of the additive manufacturing apparatus, generates a predictive model indicative of relation between the conditions and the molding result,
the processor calculates predicted values from the predictive model by giving the received evaluation target values to the predictive model, transmits the predicted values to the additive manufacturing apparatus or the control region of the additive manufacturing apparatus to conduct a demonstration experiment, and acquires a result of the demonstration experiment as measured values,
the processor determines whether the evaluation target values are achieved by the measured values, if the evaluation target values are achieved, outputs the predicted values as the settings for the conditions, and if the evaluation target values are not achieved, optimizes the additive manufacturing conditions by adding the predicted values and the measured values to the settings for the conditions and to the molding result and thus updating the predictive model, and
the reference sample has at least three smooth surfaces and a surface having aggregated punched holes formed by straight lines and curved lines that are involved in three types of regions to be set as the conditions, namely, a fill region of a molding region, a region for forming an overhang, and a region for forming an outermost surface in a direction of molding height, and slice data of the reference sample has at least two independent regions in a layer at a center in a lamination direction, and includes a small region and a large region, the small region having a width of 1 mm or less and being cut off from an outer edge of the reference sample, the large region being formed by a portion other than the small region.
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