Automation of the surfacing process using a desktop 3D printer
Technological solutions for automation of the surfacing process based on the Anycubic Chiron desktop 3D printer, which uses Fused Deposition Modeling (FDM) technology, are proposed. Gas metal arch welding (GMAW) was chosen as the surfacing process. Materials were selected to protect table and printer components from sparks and heat. Model is developed and material is selected for welding torch holder. As a material for protecting table, a 15 mm thick glass fiber refractory plate was used, thermal conductivity of which at a temperature of 400 ºС is 0.092 W/(m⋅K). For the holder of welding torch, a wrought aluminum alloy AMg2 was chosen, which has good weldability and machinability. A diagram has been developed for connecting welding machine to the board of 3D printer, the main component of which is a mechanical relay. A scheme for controlling surfacing process based on commands from the printer board transmitted to the welding machine is proposed.