摘要
为了克服现有陶瓷打印喷头不能连续进料的缺点,根据陶瓷3D打印机高精度和连续上料的要求,对陶瓷3D打印机的喷头挤出系统进行结构设计,提出一种可连续进料、持续打印的陶瓷3D打印机喷头挤出系统,并利用流体力学相关理论知识以及ANSYS Fluent流体仿真软件对挤出过程进行数值模拟.仿真分析结果表明:喷头出口流速约为1.79 mm/s,能够满足较高精度的打印需求;流体内部压强分布合理;关键部件螺杆受力在许用范围内;流体流线场光顺无交叉,在螺杆螺槽处能够顺畅流动.
In order to overcome the shortcomings that the existing ceramic print heads can^t realize continuous feed, according to the requirement of ceramic 3D printer for the high accuracy and continuous feedstock, a new structure for the ceramic nozzle of 3D printers was proposed, and this new structure can realize continuous feed and print. The extruding process was simulated by using the ANSYS Fluent simulating software based on the theory of fluid mechanics. The simulation analysis results show that the exit speed of nozzle is 1.79 mm/s, can satisfy the needs of high precision printing; internal fluid pressure distributes reasonably; the screw stress is reasonable; the streamline field is smooth and has no cross, the fluid can flow smoothly in the groove of screw.
出处
《天津工业大学学报》
北大核心
2017年第4期84-88,共5页
Journal of Tiangong University
基金
天津市科技计划项目(14RCHZGX00862
14ZCDZGX00811
15ZXHLGX00210)
关键词
3D打印
陶瓷打印
打印机喷头
挤出系统
结构设计
流体仿真
3D printing
ceramic printing
printer nozzle
extrusion system
structure design
fluid simulation
