Research On The Design And Embedding Key Technology Of Micro-nano-satellite Functional Component Scaffolds For Integral Additive Manufacturing

Integrated additive manufacturing is a new method for integratedly manufacturing functional electronic products based on additive manufacturing and automated embedded technology.Due to its high degree of freedom in design and manufacturing,it has a wide range of applications in aerospace,medical equipment,smart electronics,wearable devices and other fields.In order to subvert the traditional micro/nano satellite manufacturing methods,further shorten the development period of micro/nano satellites,and increasing their functional density,This article takes a unit of micro/nano satellites as the research object,and proposed the idea of using integrated additive manufacturing technology to manufacture micro/nano satellites.Based on the micro-nano satellite structure needs to be insulating,and the manufacturing process needs to be compatible with the silver printing and automatic embedding load process requirements,this paper selects the fused deposition modeling(FDM)technology to print the insulating support structure,cooperating with the robotic arm to embed the functional components automatically and combined with high viscosity silver pasting as a manufacturing method of the micro-nano satellite.The research work on the functional component embedded in the manufacturing process mainly includes the following five parts:(1)Aiming at the problem of instability of functional component embedding due to printing errors of the cavity during the integrated additive manufacturing.a research was carried out on dimensional error compensation of printing cavity based on FDM,and established a dimensional error compensation model of embedded cavity size within100 mm.And through experiments,it is verified that the compensation model can effectively embed functional components.(2)In-depth analysis of the causes of printing errors in embedded cavities through experiments.The analysis results show that the printing error of the embedded cavity is the result of the combined effect of the error of the outer wall of the cavity,the error of the size of the base and the error of the machine movement.(3)Based on the four typical functional components of the PCBs,battery pack,momentum wheel,and bar magnet in a unit micro-nano satellite basic function platform,starting from the actual working conditions of the functional components,combining the characteristics of the additive manufacturing process,conductive lines and The connection of the functional component pins and the rationality of the embedding process,the method of simulation and experiment was used to design the brackets structure of the embedded functional component,and the design principles of typical functional component brackets were proposed.(4)Based on the micro-nano satellite operating conditions and the requirements of the integrated additive manufacturing process,the selection of insulation support material printing equipment,functional component embedding equipment and circuit printing equipment was carried out.Special fixtures were designed,and the designing was verified by simulation methods.Finally,realize the function expansion of each device and complete the construction of the integrated additive manufacturing platform.