System and method for monitoring manufacturing accuracy in the additive manufacturing of three-dimensional components

摘要

System for monitoring the manufacturing accuracy in the additive production of three-dimensional components, wherein a combined illumination and detection element comprising a two-dimensional detector array and at least one laser radiation source, with the electromagnetic radiation to a region of a powdery or pasty material, with the at least an area of a three-dimensional component is produced as a result of a locally defined energy input. The detector array is arranged and designed such that speckles occurring in / on the surface irradiated by the laser radiation source can be detected in a spatially resolved manner. The spatially resolved with the detector array speckle signals can be fed to an electronic evaluation and control circuit. The electronic evaluation and control circuit is connected to an electronic control and regulating device, which is designed to influence the manufacturing process. A thermal speckle excitation can be achieved with a separate energy beam or an energy beam with which the energy input is locally defined on the powdery or pasty material for additive three-dimensional production.