Research on the Shrinkage of Model with Hole in PLA Material Based on the FDM 3D Printing

摘要

The accuracy of holes which are typical feature in various parts is an important requirement in 3D printing. In this paper, the influence of extrusion head temperature, layer thickness, line-width compensation, printing speed and other factors on the shrinkage of model with hole is researched in FDM process. And orthogonal experiments of printing the model with hole in PLA material is used to analysis the experimental results for getting the optimal combination of process parameters. Finally, the measure of reducing the shrinkage of model with hole is put forward.