高性能复杂薄壁曲面覆层天线精密高效加工基础理论与技术

高性能复杂薄壁曲面覆层天线作为航空航天领域高速飞行器中的关重件，具有结构复杂、刚度低、带线边缘质量、几何精度要求高等特点，是一种典型的具有表层功能结构的复杂薄壁曲面零件，现有加工方法受加工精度限制难以保证此类零件性能要求，制约高速飞行器发展。在分析该类零件结构特征及加工工艺的基础上，研究变形顺应均匀的复杂薄壁曲面可靠装夹方法，突破基于原始设计的夹紧态薄壁曲面表层功能结构加工轨迹再规划技术，建立基于动态轮廓误差的加工时变进给速度规划策略，提出时变进给速度下复杂薄壁曲面表层功能结构加工工艺优化方法，为高性能复杂薄壁曲面覆层天线的精密高效加工提供理论与技术支撑。通过加工综合试验，实现高性能复杂薄壁曲面覆层天线精密高效加工。研究成果对保证高性能复杂薄壁曲面覆层天线加工精度、提高加工效率、满足高速飞行器发展需求具有重要意义，亦为我国高端装备中具有复杂几何特征的薄壁结构件精密高效加工提供技术支撑。

As the key parts of the high-speed vehicle in aerospace engineering field, the complex thin-walled curved surface cladding antenna with high-performance has some features such as complex structure, low stiffness, etc. Meanwhile, the requirements are high for the edge quality of the antenna line and the geometric accuracy of the antenna. The complex thin-walled curved surface cladding antenna with high-performance can be regarded as a kind of complex thin-walled curved surface parts with surface function structure and the existing processing method restricted by machining precision is difficult to ensure the performance requirement for such parts, which also results in restricting the development of high-speed vehicle. By analyzing the structure characteristics and the machining process for this kind of parts, the reliable clamping method with homogeneous deformation for the complex thin-walled curved surface will be studied. On this basis, the tool path re-planning method will be researched for the surface function structure on complex thin-walled curved surface in the clamping state by using the original design, a time-variable feed-speed planning strategy on account of the dynamic contour error will also be established, and then the processing technology optimization method on the condition of time-variable feed-speed can be proposed for the surface function structure on complex thin-walled curved surface, which will provide theoretical and technical supports for high precision and efficient processing of the complex thin-walled curved surface cladding antenna with high-performance. After comprehensive processing experiment, high precision and efficient processing for the complex thin-walled curved surface cladding antenna with high-performance can be achieved. The research results have important theoretic significance to guarantee the machining precision, improve the machining efficiency for the complex thin-walled curved surface cladding antenna with high-performance, which can meet the demand of high-speed vehicle, and then can be as a result to provide technical supports for the high precision and efficient processing of other thin-walled curved surface parts with complex geometrical feature in the high-end equipments.