| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === The rapid prototyping system is to produce the required products by stacking different substrates in layers. Because of the different raw materials for forming, it can be divided into three major categories, solid-state forming, liquid-state forming, and powder-state forming. In this research the rapid prototyping system of fused deposition modeling(FDM) is belong to solid-state forming. It use polymer wier as a raw material, after heating, follow the demand path to extrude, and the product can be obtained after the path are stacked layer by layer.
Because of the advantages of low cost, easy operation, and no chemical gas generation. The rapid prototyping system of fused deposition modoling is mainly used in model making and previewing of finished products. However, the disadvantage is that the polymer wire used cannot be replaced during the printing process. The number of colors that can be printed depends on the total number of nozzles, and the path processing file G-code used in the print is generated by the STL file after the slice process. Both of G-code file and STL models do not have color information.Therefore it is difficult to print into a colorful model.
In order to overcome these two difficulties, this reaserch is based on the rapid prototyping system of fused deposition modeling, improving hardware and software to reach the research goals. On the hardware, designing connection structure to increase the number of nozzles allows a single model to print by using multiple colors of wire. On the software, Use the G-code interface software developed from the C/C++ language to analysis the G-code file and simulate hole path during printing layer by layer. Then mark features on required contour, produce a new G-code file with colorful path information.
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