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RISS 인기검색어
- 검색키워드
- 저자 : MD. OLIOUL ISLAM (검색결과 1 건)
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A STUDY ON THE PROCESS PLANNING MODULE FOR FDM 3D PRINTER
MD. OLIOUL ISLAM Graduate School, Andong National University 2017 국내석사
In Additive Manufacturing (AM), 3D printer is becoming one of the key technology to produce physical object. In this technology, a computer aided design (CAD) 3D model is sliced into several 2D cross-sections along the Z-axis, then it produced physically layer-by-layer using 3D printer. However, the manufacturing by 3D printer is divided into three major sections, (a) process planning or slicing the CAD 3D model, (b) actual printing using 3D printer (c) post processing. Process planning is a geometrical work which requires the machine to have much more memories and processing powers than it is used in a 3D printer or any other AM machine. It is the reason the process planning or slicing of the CAD 3D model is done using computer software prior to send the printing command to the 3D printer. Therefore, the process planning section brings the software engineers, and the actual printing and post processing sections bring the mechanical system engineers in 3D printing technology. However, the procedure and output of the process planning varies based on different types of 3D printers and the printing materials. Though the research on 3D printing is aged around 30 years, it still demands much more research to improve the output of the professing planning algorithms. Therefore, the objective of this study is to develop a process planning strategy for fused deposition modeling (FDM) 3D printer which is aimed to slice the CAD 3D model fast and produces better output. Process planning itself includes four main planning tasks; (a) orientation optimization, (b) support design, (c) slicing the CAD 3D model and (d) generating tool path. The first three tasks are almost similar to any other 3D printer. But the tool path generation for a FDM 3D printer is different; it is because of the different printing strategies used in different types of 3D printers. Therefore, this current study started from slicing the CAD 3D model where most of the algorithms for slicing are derived and modified from the previous works in this field. And as the scanning tool path for FDM 3D printer is different, this study includes the development of a suitable tool path for FDM 3D printer. A desktop based slicing software is developed as a part of the research work mentioned above. On that software, slicing layer height, number of shells (offset loops), sharp-corners smoothing factor, infill percentage, extruder diameter and several important parameters are made variable to test the tool path with different parameter sets. Also, the machine settings are kept variable to make the slicing compatible for different size of FDM 3D printers. G-code flavor can also be changed to produce the final output in different kinds of G-code. The research work on the tool path is still being carrying out to make it suitable to use in the FDM 3D printer.
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