Han Xingguo, Wu Gaofei, Liu Xuan, Song Xiaohui, Cui Lixiu
College of Mechanical and Control Engineering, Guilin University of Technology, Guilin 541006, China.
Guangxi Key Laboratory of Special Engineering Equipment and Control, Guilin University of Aerospace Technology, Guilin 541004, China.
Micromachines (Basel). 2024 Jun 30;15(7):855. doi: 10.3390/mi15070855.
When using traditional 3D printing equipment to manufacture overhang models, it is often necessary to generate support structures to assist in the printing of parts. The post-processing operation of removing the support structures after printing is time-consuming and wastes material. In order to solve the above problems, a support-free five-degree-of-freedom additive manufacturing (SFAM) method is proposed. Through the homogeneous coordinate transformation matrix, the forward and inverse kinematics equations of the five-degree-of-freedom additive manufacturing device (FAMD) are established, and the joint variables of each axis are solved to realize the five-axis linkage of the additive manufacturing (AM) device. In this research work, initially, the layered curve is obtained through the structural lines of the overhang model, and a continuous path planning of the infill area is performed on it, and further, the part printing experiments are conducted on the FAMD. Compared with the traditional three-axis additive manufacturing (TTAM) method, the SFAM method shortens the printing time by 23.58% and saves printing materials by 33.06%. The experimental results show that the SFAM method realizes the support-free printing of overhang models, which not only improves the accuracy of the parts but also the manufacturing efficiency of the parts.
使用传统3D打印设备制造悬垂模型时，通常需要生成支撑结构来辅助零件打印。打印后去除支撑结构的后处理操作既耗时又浪费材料。为了解决上述问题，提出了一种无支撑五自由度增材制造（SFAM）方法。通过齐次坐标变换矩阵，建立了五自由度增材制造设备（FAMD）的正逆运动学方程，求解各轴的关节变量，实现增材制造（AM）设备的五轴联动。在本研究工作中，首先通过悬垂模型的结构线得到分层曲线，并对其进行填充区域的连续路径规划，进而在FAMD上进行零件打印实验。与传统三轴增材制造（TTAM）方法相比，SFAM方法的打印时间缩短了23.58%，打印材料节省了33.06%。实验结果表明，SFAM方法实现了悬垂模型的无支撑打印，不仅提高了零件精度，还提高了零件制造效率。
