3D打印成型方向和层厚对成型精度的影响研究

Research on the influence of layer thickness to the forming precision of 3D printing

为了提高3D打印产品表面的精度,减少产品成型时间,可以通过合理选择成型方向和分层方法来实现。以半球模型为例,首先采用等层厚分层法和变层厚分层法对该模型进行分层,并建立了该模型在不同成型方向上的成型误差模型,然后分别分析等层厚分层和变层厚分层对不同方向模型精度的影响。研究结果表明:在选择成型方向时,尽量使模型的高度最小;尽量选择变层厚分层算法对模型进行分层处理。

To improve the surface precision of 3D printing products, and reduce time consumption in productive process, one of the methods is reasonable selection of shaping direction and layer method. It introduces the hemisphere model. Using a uniform layer slicing method （ULSM） and variable thickness layering method （VTLM）, it builds the layered model, analyzes the effects of ULSM and VTLM on the accuracy of different directions respectively. The results show that：selecting the forming direction should make the minimum height model, and try to choose VTLM to layered the model.