摘要
用均匀设计法设计试验,将打印层厚、打印速度、喷头温度、热床温度四个主要工艺参数划分为9水平参数,进行打印试验,将成型试件实际尺寸与设计尺寸的差值与实际尺寸之比作为Z向收缩率,以评价成型件成型精度,收缩率越小代表打印精度越高。运用SPSS软件对Z向收缩率及各工艺参数进行回归分析,获得了最优工艺参数,以PLA线材进行打印试验,结果表明,当打印层厚为0.1 mm、打印速度为60 mm/s、喷头温度为202℃、热床温度68℃时,3D打印成型件的Z向收缩率相对最小,成型质量最好。
To improve the forming accuracy of FDM 3D printing,an experimental scheme of uniform design method is proposed to optimize the influence of various process parameters on the forming accuracy of Z direction.The printing layer thickness,printing speed,nozzle temperature and hotbed temperature are divided into 9 levels of parameters,and the printing experiments are carried out.The ratio of the difference between the actual size and the design size of the molding specimen to the actual size is used as the Z-direction shrinkage rate to evaluate the molding accuracy.The smaller the shrinkage rate is,the higher the printing accuracy is.Furthermore,the regression analysis on Z-direction shrinkage rate and various process parameters is performed based on SPSS software.And the optimal process parameters are determined by regression equation.Finally,the printing experiments are carried out with the PLA wire.The results show that when the printing layer thickness is 0.1 mm,the printing speed is 60mm/s,the nozzle temperature is 202℃,and the hotbed temperature is 68℃,the Z-direction shrinkage rate is relatively minimum,and the printing quality is the best.
作者
周石林
张秀芬
刘海
ZHOU Shilin;ZHANG Xiufen;LIU Hai(College of Mechanical Engineering,Inner Mongol University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Advanced Manufacturing Technology,Hohhot 010051,China)
出处
《内蒙古工业大学学报（自然科学版）》
2022年第4期339-345,共7页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
国家自然科学基金项目(51965049)。
关键词
熔融沉积
均匀设计
回归分析
收缩率
工艺参数
fused deposition modeling
uniform design
regression analysis
shrinkage
process parameters
