反求工程中基于DMIS的自动加密测量和精确重构技术研究

在对CMM联机检测方法研究的基础上,利用Bezier曲面插值原理,通过划分予三角域,在测量曲面内部得到了更多的测量点,从而实现了曲面的加密测量,为了得到更为精确的测量点,把重构之后的曲面法矢量作为测量点的法矢量进行重新测量,得到更为精确的重构曲面。应用实例表明,这种自动加密测量和精确重构技术达到了理想的CAD建模效果,实物测量的测量速度、准确性得到提高,测量过程与曲面重构的有效集成,解决了测量点数量和分布的确定问题。

Study on Automated Denseness Measuring and Precision Reconstruction Technology Based on DMIS in Reverse Engineering

This paper studies automated denseness measuring and precision reconstruction technology based on DMIS in reverse engineering,and resolves the determination of quantity and distribution of measuring points.By the practical example,it comes an ideal CAD modeling result,realizes the effective aggregation of measuring process and surface reconstruction,and takes on an important practice significance and wide-ranging application perspective.