3D Printing Platform Construction And Performance Testing

As an important carrier to enhance the competitiveness of manufacturing industry,additive manufacturing has attracted much attention from academic and industrial circles in the past 20 years.This paper analyzes and summarizes the development status of 3D printing technology at home and abroad,and compares the performance characteristics of different types of 3D printers.The self-assembled Fused Deposition Modeling(FDM)printing equipment was studied and its printing performance was discussed.The main research contents and results include:According to the working principle of FDM type 3D printer,following the design principle of light structure and cost reduction,the structural composition of the whole machine is optimized based on the printing performance.Mathematical and physical modeling of the system,static analysis of the motion system and load-bearing components were carried out using finite element analysis software,and the modal analysis of the transmission components was carried out to illustrate the rationality and reliability of the designed mechanical system.and to make the appropriate modification and adjustment.In combination with the requirements of improving the printing accuracy and the strength of plastic parts,the printing mechanism of the concentric pericardium structure was proposed,that is,the "ink cartridge" device was designed,and the structure of the nozzle was optimized to design the heat sink in the neck to prevent neck blockage.By analyzing the shortcomings of the existing equipment,the heating device was optimized and adjusted,and the traditional external heating of aluminum block was replaced by internal heating of heating rod.The advantages of the heating effect were illustrated through thermodynamic simulation analysis.The finite element analysis software is used to model and simulate the nozzle extrusion mechanism,and the design scheme is evaluated to prove the feasibility of the design scheme,and thenecessity of experimental verification is proposed.This paper introduces the hardware and software selection criteria of self-built printers,analyzes the influence of the slicing method and control system and the advantages and disadvantages of the hardware on the printing effect.According to the mechanism designed in this paper,the physical equipment is built,and the package is printed through the 3D printing platform.The structural plastic parts were tested and their performance was verified by experiments.The results confirmed that the optimized design of this paper can improve the performance of the fused deposition molded parts.