PROCÉDÉ D'ÉTALONNAGE D'UN APPAREIL DE PRODUCTION D'UN OBJET AU MOYEN DE FABRICATION ADDITIVE ET APPAREIL POUR LE PROCÉDÉ

摘要

The invention relates to a method for calibrating an apparatus (1) for producing an object (2) by means of additive manufacturing. Said apparatus comprises a process chamber (3) for receiving a bath of material (4) which can be solidified by exposure to electromagnetic radiation (71); a support (5) for positioning the object in relation to the surface level of the bath of material; and a solidifying device (7) for solidifying a selective layer-part of the material on the surface level by means of electromagnetic radiation. The method according to the invention comprises the step of providing, on or near the support, a calibration marker (82) that faces the solidifying device, and the step of providing a calibration system (8) with an imaging unit (81) that can be directed to said support. Further steps include a determining step of the position of the calibration marker; making a solidifying marker that relates to the calibration marker and determining a measure for the position thereof; and determining, with the calibration system, at least a correction vector based on the positions of both the calibration marker and the solidifying marker.