中文摘要：

三维打印成型中常用的STL模型的数据描述通常与CAD模型及其原型间存在一定程度的误差．为了获得较好的三维打印效果，提出了一种基于NURBS样条曲线局部轮廓拟合重构技术，并利用自研的三维打印设备进行成型验证，证明了方法的可行性，获得了具有更好平滑度和更高精度的成型件．

英文摘要：

Compared with the CAD model and the prototype, there are a certain degree of errors in STL files, which are generally used for the description of model date in 3D printing. In order to get a better three-dimensional printing effect, this paper suggests a profile reconstruction technique based on the NURBS curve fitting, and uses the self-development printer to do molding authentication, which gets the prototype with better smoothness and higher accuracy.