Published: Jan. 1, 2024

Material extrusion (MatEx) is the predominant of available additive manufacturing (AM) methods. The key to high printing quality in MatEx lies synchronization between fast motion system and slow system. However, challenged by response In MatEx, there are two main types systems: Bowden direct-drive (DD), based on different extruder-hot end arrangements. DD systems have extruder installed directly above hot end, providing a relatively but adding more inertia print head. contrast, position printer's frame, feeding filament through long tube. As result, this setup leads sluggish due elasticity segment has lower head's inertia, offering higher positioning accuracy compared To leverage advantages both systems, paper proposes hybrid design that combines with low-mass for feeding. optimize control extruder, low-order model characterizes dynamics proposed. used feedforward (FF) controller minimizes force exerted motor while achieving desired accuracy. effectiveness proposed FF validated experimentally demonstrating transient responses as those standard up 65% less required from motor. Data collected torque-mass specifications three series manufacturers indicate torque/force reduction could yield 69% mass only 32.5% extra weight Hence it holds potential achieve same extruders significantly reducing head inertia.

Language: Английский