基于点云数据复杂曲面产品的快速开发

重点以三维反求工程为基础，详细地研究了复杂曲面产品的快速开发方法，提出了基于点云数据的STL（STereoLithography)快速重构，有限元网格划分，结合快速成型及计算机辅助工程（CAE）等技术，大大加速了对具有复杂曲面的产品，如汽车覆盖，塑胶产品模具，个性化人体骨等的设计与制造速度，也避免了繁杂的曲线曲面重构。通过实例，验证了所提出的方法不仅简便易行，而且也能满足模具设计制造的精度要求。

Rapid Development of Products with Curved-Surfaces Based on Point Cloud Data

Based on the three-dimensional reverse engineering(RE),rapid development of products with cureved-surfaces are presented in detail.Meanwhile, a new method for reconstruction stereolithography (STL) of models based on point cloud data is proposed. And generation of finite element mesh from STL is also disscussed. Combined with the computer aided engineering (CAE) and rapid prototyping (RP) technology, the development of products with complex curved surfaces, such as automobile cover, plastic mold, man-made bone, is speeded up obviously and the boring processes of reconstruction of complex curves and curved surfaces can be avoided. Finally, the practical examples of the new methods, indicate that the new design method is not only easeier to carry out, but also can meet the request of mold design accuracy.