基于图像处理的连续纤维增强复合材料3D打印精度在线优化方法  

Online optimization method of CFRC 3D printing accuracybased on image processing

作　　者：王叶松 计良 张礼华[1] 章中森 陈曙光 孙梓轩 WANG Yesong;JI Liang;ZHANG Lihua;ZHANG Zhongsen;CHEN Shuguang;SUN Zixuan(School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China;Beijing Shiny Tech.Co.Ltd.,Beijing 100039,China)

机构地区：[1]江苏科技大学机械工程学院,镇江212100 [2]同济大学航空航天与力学学院,上海200092 [3]北京航天新立科技有限公司,北京100039

出　　处：《江苏科技大学学报（自然科学版）》2024年第3期84-90,共7页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(12002239);江苏科技大学博士科研启动基金项目。

摘　　要：为了改善“独立挤出型”连续纤维增强复合材料3D打印(continuous fiber reinforced composite 3D printing, CFRC 3DP)制件的尺寸精度,提出了基于图像处理技术的在线优化方法,建立了CFRC 3DP尺寸精度的在线反馈优化模型,研究了图像滤波、边缘检测及边缘几何基元的提取方法,基于CFRC 3DP打印层实际尺寸与理论尺寸的误差对比,求解了打印制件的误差比例系数,修正了电机步进值,实现了CFRC 3DP尺寸精度的在线优化.通过对典型轴套类零件优化前后的打印尺寸研究,并利用假设检验进行了统计学分析,实验结果表明优化前后打印样件的尺寸存在显著性差异,8 mm轴和16 mm轴的直径打印精度分别提升了1.34%和0.76%,且标准差均有所减小,验证了尺寸精度在线优化方法的可行性和有效性.In order to improve the dimensional accuracy of continuous fiber reinforced composite 3D printing(CFRC 3DP)parts of“independent extrusion type”,an online optimization method based on image processing technology is proposed,an online feedback optimization model for the dimensional accuracy of CFRC 3DP is established,and the methods of image filtering,edge detection and edge geometric element extraction are studied.The error proportion coefficient of the printed part is solved by the error comparison between the actual size and the theoretical size of the CFRC 3DP printing layer,the motor step value is corrected,and the online optimization of the size accuracy of the CFRC 3DP is realized.Through the research on the print size of typical shaft sleeve parts before and after optimization,and the statistical analysis using hypothesis test,the experimental results show that there are significant differences in the size of the printed sample before and after optimization,the diameter print accuracy of 8 mm shaft and 16 mm shaft has increased by 1.34%and 0.76%respectively,and the standard deviation has decreased,which verifies the feasibility and effectiveness of the online optimization method of size accuracy.

关 键 词：独立挤出 CFRC 3DP 图像处理 在线优化 尺寸精度 

分 类 号：TH122[机械工程—机械设计及理论]