材料挤出工艺打印功能梯度材料路径规划策略  

Path planning strategy of functionally graded materials printed by material extrusion process

作　　者：马硕 王世杰 王龙 韩晓伟 杨杰[1] 段国林[1] MA Shuo;WANG Shijie;WANG Long;HAN Xiaowei;YANG Jie;DUAN Guolin(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学机械工程学院,天津300401

出　　处：《计算机集成制造系统》2023年第10期3340-3350,共11页Computer Integrated Manufacturing Systems

基　　金：河北省中央引导地方科技发展资金资助项目(216Z1804G)。

摘　　要：鉴于增材制造技术中的材料挤出工艺操作方便、节省材料,而目前国内外对该工艺打印功能梯度材料的路径规划策略研究较少,对材料挤出工艺材料组分转变时的延迟现象进行分析,将延迟分为交付延迟和过渡延迟,并提出基于偏移距离对延迟现象进行补偿的打印策略。以Visual Studio 2019为开发平台提出一种自动生成任意功能梯度材料打印路径的新路径规划策略,该策略考虑了每层切片内材料组分的变化,针对不同变化方向生成相应的填充路径,以确保打印过程中的材料组分变化最小,从而提高成型件的材料精度。对多个功能梯度模型进行仿真演示,将生成的打印路径采用OpenGL可视化分析其材料组分误差,并通过实验验证了路径规划策略的正确性。Since additive manufacturing technology is based on the properties of discrete stacking molding,it is considered to be an effective method for fabricating functionally graded materials.The material extrusion process has gradually become a research hotspot due to its advantages of convenient operation and material saving.In view of the fact that the path planning strategy for printing functionally graded materials by this process has been less studied by scholars at home and abroad,the delay phenomenon during the material component transition of the material extrusion process was analyzed.The delay was divided into“delivery delay”and“transition delay”,and a printing strategy was proposed to compensate for the delay phenomenon based on the offset distance.Visual Studio 2019 was used as the development platform to propose a new path planning strategy for automatically generating arbitrary functionally graded materials print paths,which considered the variation of material components within each layer slice and generated corresponding printing paths for different variation directions to ensure minimal variation of material components during the printing process and thus improve the material accuracy of the molded parts.The generated print paths were demonstrated by simulation with multiple functional gradient models,their material component error analysis was visualized using OpenGL,and the superiority of the path planning strategy was experimentally verified.

关 键 词：增材制造 材料挤出 功能梯度材料 路径规划策略 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]