In recent years

robotic additive manufacturing technology demonstrated significant potential in fabricating aerospace lightweight structures

characterized by its high efficiency

expansive scale

and mobility. This paper systematically reviews the research progress in aerospace lightweight structures

starting from the demands of manufacturing and repair

and discusses the research background and importance of lightweight technology. In terms of the additive manufacturing technology

a detailed introduction to the design and fabrication of lightweight structures

materials

and functional integration is provided. The key technologies of robotic additive manufacturing are analyzed in depth

including technical characteristics

typical process principles

robot mechanism

equipment

and process planning; the critical challenges of robotic additive manufacturing technology for lightweight structures are also discussed. Finally

future research directions are outlined based on the current technological development status

including multi-process hybrid manufacturing

intelligent monitoring control

and digital twin technologies

as well as the potential of human–machine collaborative additive manufacturing. This paper aims to provide a comprehensive and cutting-edge scientific view of the research and development of aerospace lightweight structures from the perspective of robotic additive manufacturing

and provides references for promoting the development of this area.