Abstract:
Robotic arms are arguably the best way of executing continuous, repetitive
movements accurately and precisely. 3D printing provides flexibility in designing and
manufacturing products, complementing subtractive manufacturing methods, thus
increasing material efficiency. 3D scanning creates many opportunities, especially
when used in conjunction with 3D printing. In this research, we aim to combine these
3 technologies into a single product, simplifying engineering design processes, for a
more sustainable, eco-friendly, material efficient future. In the present market, there
are only 3 robotic arms capable of 3D printing available commercially. 3D replicating
machines are also very limited and pricey but often with disappointing scan quality.
The objective of this study is to produce a 3D Replicating machine that is as portable
and cost efficient as possible. Besides, we want to build a robotic arm with both 3D
printing and 3D Scanning features. We mainly used subtractive fabrication methods,
namely lathing, milling, and welding to produce parts of the robotic arm. Soldering
was used to connect electrical/electronic components. After all is set and built, coding
was involved to program the arm. The robotic arm operates with respect to the Marlin
firmware signature. It is able to create medium sized sophisticated 3D models by
extruding melted plastic (ABS, PLA, and TPU) filaments through a nozzle. It is
compact, user-friendly, and cost efficient. To further develop and improve this model,
cheaper or more eco-friendly materials may substitute aluminium for the arm. The
program code should be revised to simplify operational procedures and perfecting the
quality of 3D printing and 3D scanning.
