Printing and forming strategy of nonmetallic thinwalled parts in 3D printing

WANG Yangzhi, HUI Yanbo, ZHOU Ying, LI Junshuai, YU Junan, BAI Luyao

(Advanced Manufacturing Research Institute,Henan University of Technology,Zhengzhou 450001,China)

Abstract: Aiming at the problem that the nonmetal thinwalled parts injection molding is long cycle, low molding precision ,wasting time and energy, a nonmetallic thinwalled part forming method combining 3D laser scanning technology and 3D printing technology was proposed.Motorcycle thinwalled turning board was used as the research object. Firstly, the point cloud collecting technology and point cloud processing technology of reverse engineering were selected to obtain the accurate surface point cloud data of workpieces. Then, through the model reconstruction and analysis technology, the model whose size and characterization data meet the requirements of the workpiece was designed. Secondly, the 3D preprocessing technology was used to carry out the operation of model placement, support addition and slicing. Finally, the SLA industrial printer was used to print the thinwalled workpiece of the motorcycle. The results indicate that after about 20 hours of printing time, the workpiece is printed and formed, which significantly shortens the trial production cycle compared with the traditional injection molding, and the dimensional deviation and surface curvature characteristics of the finished product meet the requirements of the workpiece. The method is suitable for the printing and forming of nonmetal thinwalled parts in industrial manufacturing, and provides means for preproduction trial production of the product, effectively shortening the test period, reducing the cost.