Analysis And Optimization Design Of 3D Printer Molding Accuracy

Compared with the traditional machining technology,3D printing technology has advantages of the short processing cycle,low cost investment,and the high material utilization rate,which is widely used in the fields of machinery manufacturing,aerospace,medical repair,educational and research,and daily necessities.However,the forming accuracy of 3D printers on the market is generally low,which is an important research direction in the field of improving the forming accuracy of 3D printing finished products.This article focuses on fused deposition molding 3D printer.Firstly,it analyzes various factors that affect the forming accuracy and the causes of errors from the printer's motion control system,temperature control system and process parameters.According to the process of fused deposition forming 3D printer during printing,the print forming parts could not be cooled in time,and the problem of poor printing accuracy caused by peristaltic deformation occurred.The creep process of printing materials was studied through simulation experiments,and the peristaltic deformation rules of printing materials were obtained.A simple,efficient and energy-saving new shaped parts cooling device was designed.For two different cooling devices,the actual printing test was completed,and makes a comparative analysis of the printing result.The method of adding support was discussed,the optimum process parameters which make the support easy to remove were obtained by orthogonal test.It explores the influence of the platform error and the calculation error on the print quality,optimizes the hardware control parameters,and verifies the optimized effect of part molding through experiments.The influence of printing parameters on molding accuracy was analyzed.The actual printing test was performed by setting different printing parameters,and the height error,flatness error,roundness error,cylindricity error,and warpage-type variables of the molded part were measured.Finally,the error of precision is analyzed by variance,and the optimal printing parameters are obtained.