A modular testbed for mechanized spreading of powder layers for additive manufacturing

Powder bed additive manufacturing (AM) processes, including binder jetting (BJAM) and powder fusion (PBF), can manufacture complex three-dimensional components from a variety of materials. A fundamental understanding the spreading thin layers is essential to develop robust process parameters for AM assess influence feedstock characteristics on subsequent outcomes. Toward meeting these needs, this work presents design, fabrication, qualification testbed modular, mechanized, multi-layer spreading. The designed replicate operating conditions commercial equipment, yet features full control over motion translation rotation roller tool precision feed piston build platform. mechanism interchangeable therefore be customized, capability dispensing fine, cohesive powders using vibrating hopper. Validation resolution accuracy machine its subsystems, as well exemplary range sizes typical BJAM PBF are described. engineered enable optimization correlation in future work, exploration specialized other techniques.