Protótipo de extrusora de filamento de ABS adequada a manufatura aditiva

Abstract

The present paper aims to do a theoretical and practical approach of the construction process of a plastic filament extruder machine, popularly known as ABS and PLA, widely used by the rapid prototyping process. Through the bibliographic review performed, was built a prototype, using, as far as possible, commercial items and materials, thereby aiming the construction of a device which did not present major difficulties of being reproduced, in accordance to the profile of engaged people in additive manufacturing só that they could extrude their own filament at home, with a reduced cost. Tests have shown that the final quality of the filament does not depend solely on the calibration of the control systems. But also the internal conditions of the cannon as impurities and crystallized material, as well as peripheral to aid in the filament’s linearity. The extruder is unable to do this itself. Despite the difficulty in finding the correct calibration, it is possible to obtain good results, such as hypothesis C, which had a standard deviation of 0.023mm in the studied sample. However, it is still advisable to develop more accurate auxiliary systems for measurement and control, which may be developed in future work.