摘要
针对熔融沉积型(FDM,Fused Deposition Modeling)3D打印机喷头系统在打印过程中存在打印材料提前软化和打印成型件不能及时冷却,引起打印精度差的问题,设计了一种高效简易的3D打印机喷头冷却装置。通过ANSYS fluent软件对结构优化前后的喷头和打印材料进行了热学仿真分析,得到结构优化前后喷头温度云图和打印材料的温度云图、应变云图的模拟数据。并通过实验测量出结构优化前后打印成型件的误差。结果表明:结构优化后喷头的冷却装置能够有效改善打印材料提前软化的现象,打印的成型件能够及时冷却,打印精度得到提高。
In order to solve the problem that the printing material is softened in advance and the printed parts cannot be cooled in time for 3 D printer nozzle of FDM（ Fused Deposition Modeling）,and the printing accuracy is poor in the process of printing,we design an efficient and easy 3 D printer nozzle cooling device. The thermal simulation of the nozzle and the printing material before and after the structure optimization was conducted by ANSYS fluent software. The simulation data of the temperature cloud of nozzle,temperature cloud of printing material,and strain cloud of the printing material were obtained before and after the structure optimization. The error of the printing parts before and after the optimization is measured by experiments. The results reveal that the cooling device of the nozzle can improve the softening of the printing material in advance,and the printed parts can be cooled in time and the printing precision can be improved.
作者
朱黎立
周敏
高强
段现银
ZHU Li-li;ZHOU Min;GAO Qiang;DUAN Xian-yin(Key Laboratory of Metallurgical Equipment and Control Technology;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《组合机床与自动化加工技术》
北大核心
2018年第8期18-22,28,共6页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(51605346)
