基于流线场模型驱动的复杂曲面激光再制造方法研究

项目名称： 基于流线场模型驱动的复杂曲面激光再制造方法研究

项目编号： No.51305443

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 郝敬宾

作者单位： 中国矿业大学

项目金额： 25万元

中文摘要： 本项目以大型复杂曲面零件的损伤修复和表面强化为研究对象，开展基于流线场理论的复杂曲面激光再制造的数据测量与数控规划研究。针对大型复杂曲面零件的损伤定位较慢、测量效率较低的问题，采用流线场曲面构建的思想和整体线性化方法，建立以测量方向为流向的复杂曲面定向流线场构造模型，提出基于定向流线场的线结构光自适应正交网测量方法，研究复杂曲面零件的损伤定位、边界提取、数据拼接和模型重构算法，实现复杂曲面再制造模型的快速准确建模；分析再制造模型最简流线场的存在判定，提出基于最简流线场的复杂曲面激光再制造路径优化方法，研究复杂曲面的光束轨迹直接实时插补算法，开发基于流线场模型驱动的激光再制造数控加工系统，对典型复杂曲面零件的激光再制造进行仿真模拟和实验验证，探索实现"测量-加工"整体线性化的复杂曲面高精度激光再制造，为重大装备关键易损件的激光再制造系统研究提供重要的理论技术支持。

中文关键词： 激光再制造；复杂曲面；流线场；损伤测量；路径优化

英文摘要： The aim of this research project is to repair and strengthen the surface of large complex quick-wear parts. Based on the theory of streamline field, Data measuring and NC planning of laser remanufacturing system are researched. In order to improve the efficiency of complex surface measuring and to enhance the accuracy of damage repairing, the experimental platform of multi-degree-of-freedom (MDOF) laser remanufacturing is developed. Some important theories such as vision measurement, surface reconstruction, path optimization, track interpolation, etc, are studied in the project. To locate and measure damaged surfaces of large complex parts quickly, a new method of adaptive orthogonal scanning is proposed based on the line structured light 3D visual sensor. The streamline field model and whole linearization method are utilized to intelligently locate and measure damaged area of large complex parts. Some key algorithms such as boundary extracting, surface fitting, data splicing and model reconstruction are investigated to obtain accurate remanufacturing models. Considering the influence of laser beam on the cladding layer, the simplest streamline field of remanufacturing model is established to optimize whole trackes of laser beam. With some complicated constraints (e.g.interference-free constraint, works

英文关键词： Laser Remanufacturing；Complex Surfaces；Streamline Field；Damage Measurement；Path Optimization