数控仿形测量的密集散乱数据的曲面重建方法研究

Approach to Reconstruction Surface for Massive Profile Measuring Data

数字化仿形技术是加工自由曲面的一种有效方法 ,而快速准确地重建数控仿形测量得到的散乱数据是实现数控仿形加工的关键步骤之一。分析了数控仿形测量数据的特点 ,确定重建曲面采用规则四边形网格几何结构 ,并提出了一种基于距离加权模型的节点插值方法 ,实现了散乱数据群的曲面重建。最后提供的曲面重建实例和加工实例证实了该方法是可行的。

Digital profile machine tool is an effective and commonly way for machining free-formed surfaces now,and how to reconstruct the massive measuring data rapidly and correctly is a critical process in this way.In this paper,after analyzing the acquired data's characteristic a regular quadrangle gridding structure is applied to reconstruct free-formed surfaces and then a node interpolation method based on the node's interval weight is proposed.At the end of this paper,the surface reconstructing example and the machining example are both presented.