NGD 3.0柴油发动机三维数字模型重构

3D Digital Model Reconstruction of NGD 3.0 Diesel Engine

采用逆向/正向混合建模技术,对NGD 3.0柴油发动机进行了三维模型重构。重点研究了逆向/正向混合建模技术在复杂模型重构中的应用技巧。验证了硅胶翻模技术在获取柴油发动机内部复杂水道与气道结构的准确性与可靠性。讨论了发动机结构在逆向重构过程中的误差来源,对如何有效地减少重构误差进行了分析,经过误差分析与检测后,所采用的逆向/正向混合建模方法能够获得高精度的三维数模。通过本次研究,对复杂零件的高精度模型重构的实现具有重要的参考意义。

The 3D model of NGD3.0 diesel engine is reconstructed by using reverse/forward hybrid modeling technology.This paper focuses on the application skills of reverse/forward hybrid modeling technology in complex model reconstruction.The accuracy and reliability of silicone turnover die technology in obtaining the complex internal water channel and airway structure of diesel engine are verified.This paper discusses the error sources of engine structure in the process of reverse reconstruction,and analyzes how to effectively reduce the reconstruction error.After error analysis and detection,the reverse/forward hybrid modeling method can obtain high-precision three-dimensional digital model.Through this research,it has important reference significance for the realization of high-precision model reconstruction of complex parts.