Diseño y construcción del extrusor para un equipo de manufactura aditiva con la finalidad de depositar cera de fundición

Abstract

The aim of this work is to build a prototype extruder for an additive manufacturing device in order to deposit casting wax to build patterns for metal casting. Firstly, a functional analysis is carried out in order to establish alternative solutions; subsequently the selection of the type of extruder that adapts to the needs is carried out through weighing tables. Once the alternative is selected, the prototype is built. Performance tests are prepared, and limitations of the device are repowered. With the final design, a new prototype is built repeating performance tests. From the tests, final corrections and calibration of the prototype is released. Once the operation is tested, deposition tests are carried out with several mixtures of waxes; three types of waxes are used, latex wax, jewelry wax and paraffin wax. These tests were performed with different extrusion temperature conditions. Finally, a printing test is carried out by coupling the prototype extruder to an ILIOS 3D printer to obtain a small cylinder with the different mixtures of waxes.