Abstract: The machine comprises: manufacturing robots (201) to fabricate parts 1506 through additive manufacturing; and an automatic loading system (401) of manufacturing platforms (404), to feed the manufacturing robot or robots (201) with manufacturing platforms 404 designed to support parts during manufacturing and manufactured parts 1506. The loader is located beside each manufacturing robot (201) to load the manufacturing platforms. The lateral external location of the loader with respect to the manufacturing robot (201) permits the integration of a heating system inside the robot to heat the manufacturing platform when the platform is loaded, giving rise to the possibility of printing in different materials such as technical polymers, metals, and ceramics; furthermore, having the loading system outside of the robotic arm, one single loader could feed several adjacent robotic arms.