Prototypes for construction of addition and removal of material deposition in comparison between ABS x CNC machining

Abstract

This article was designed to draw a comparison between the manufacture of prototypes with two different manufacturing technologies: ABS deposition and CNC machining. In recent years prototyping has been growing in scale with the development of new technologies focusing on the care and needs required by the metal-mechanic sector. With the development of these technologies a range of options for developing their prototyped models have gained customers. With the help of two case studies, it was possible to identify and analyze the main characteristics of two prototype manufacturing processes, deposition and material removal. Both using as raw materials the ABS, identifying its advantages and disadvantages in both cases. We compared two parts with pre-defined geometry, where in the first case (deposition material) problems related to the surface finish of the prototype were identified, while in the second case (CNC) results relating to the strength mechanics were identified, after tensile tests on a series of specimens were performed by laboratory technicians at the laboratories of Senai Joinville. After performing the comparative assessment of costs, the deposition process was found to have a lower cost for smaller parts, but with increasing mass, the CNC machining process achieved a lower cost mainly due to time and material expense.