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Advisor(s)
Abstract(s)
Com o término da patente do processo FDM, em 2009, é notado um forte crescimento
da impressão 3D, em especial adesão a esta tecnologia para uso próprio pelo consumidor
final. Essa utilização, naturalmente, visa substituir os bens provenientes de processos de
fabricação tradicionais. Posto isto, a presente dissertação tem como objetivo a otimização
de uma impressora 3D, assim como, a implementação de um sistema capaz de imprimir
uma grande variedade de cores e a combinação de diferentes materiais, de forma a que a
experiência de utilização seja semelhante aos processos industriais. Inicialmente, fez-se
uma pesquisa bibliografia sobre esta tecnologia, tendo em conta todos os sistemas
passíveis de implementação. Após analise dos mesmos, decidiu-se implementar e
otimizar o bico extrusor Diamond Hotend. Foram implementadas toda as melhorias
pretendidas, na qual foram projetadas e dimensionadas todas as peças necessárias para
a incorporação do novo hardware. Por fim, foram impressos e testados através de
ensaios de tração vários provetes, combinando os materiais PLA e TPU, com
propriedades mecânicas muito diferentes, na qual se verificou a necessidade da
combinação através de um design próprio. Foram também feitos dois testes multicor
(com e sem mistura de filamento), onde se observou limitações de firmware.
With the expiration of the FDM process patent in 2009, a strong growth in 3D printing is noted, adhesion to this technology for the final consumer's own use. This use, of course, aims to replace goods from traditional manufacturing processes. Having said this, this dissertation aims at the optimisation of a 3D printer, as well as the implementation of a system capable of printing a wide variety of colours and the combination of different materials, so that the user experience is like industrial processes. Initially, a bibliographical research on this technology was done, considering all the systems that can be implemented. After analysing them, it was decided to implement and optimise the Diamond Hotend extruder nozzle. All the intended improvements were implemented, in which all the parts necessary for the incorporation of the new hardware were designed and dimensioned. Finally, several specimens were printed and tested through tensile tests, combining PLA and TPU materials, with very different mechanical properties, in which the need for combination was verified through an own design. Two multicolor tests (with and without filament mixture) were also performed, where firmware limitations were observed.
With the expiration of the FDM process patent in 2009, a strong growth in 3D printing is noted, adhesion to this technology for the final consumer's own use. This use, of course, aims to replace goods from traditional manufacturing processes. Having said this, this dissertation aims at the optimisation of a 3D printer, as well as the implementation of a system capable of printing a wide variety of colours and the combination of different materials, so that the user experience is like industrial processes. Initially, a bibliographical research on this technology was done, considering all the systems that can be implemented. After analysing them, it was decided to implement and optimise the Diamond Hotend extruder nozzle. All the intended improvements were implemented, in which all the parts necessary for the incorporation of the new hardware were designed and dimensioned. Finally, several specimens were printed and tested through tensile tests, combining PLA and TPU materials, with very different mechanical properties, in which the need for combination was verified through an own design. Two multicolor tests (with and without filament mixture) were also performed, where firmware limitations were observed.
Description
Keywords
Fdm Impressão 3d Multicor Multimateriais Pla Tpu