Considering the constantly increasing demand for aircraft products, the development of automatic drilling-riveting machine tool systems is discussed in this paper. A structural conceptual design method considering both efficiency and quality is proposed. Particularly, a drilling-riveting machine tool system including single-column machine tool, light-weight end-effector, and assisting fixture system is built. The positioning error coordinates variation model is analyzed, and the ranges of reasonable processing parameters are determined. An experiment is conducted on the developed system to show satisfactory drilling-riveting quality and efficiency: compared with the position error of other similar systems, the position error with 0.082 mm is reduced by 41.42%, and the accuracy of aperture reaches H8, the rivets head height error ≤0.8 mm, and drilling and riveting efficiency can reach 6/min and 8/min.

针对自动钻铆过程中对于装配信息的需求,设计一种基于模型定义的孔特征实例化方法.以孔特征为单元利用孔特征实例模板的循环匹配创建实现产品装配工艺信息的数据定义.根据实际加工需求进行未定义孔特征实例信息的属性值添加,保证装配信息的完整性.通过将装配信息储存在产品装配信息数据库中实现向后续制造活动的信息传递.实验表明:该方法可以有效实现装配信息的组织和传递,有效驱动机床进行制孔加工作业,实现 CAD、CAM系统数据源的统一.

针对箱体蒙皮配制中的自动化和高精度需求,提出一种基于视觉检测的箱体自动化精确寻边方法.根据箱体边界特征设计基于Hough变换的方法,实现对所需边界点的提取.将图像处理得到的边界点恢复为三维点云,对不同位置拍照处理得到的边界点云进行合并、旋转投影得到二维平面内的边界点.通过曲线拟合最终得到完整有序的边界点云.利用箱体扫描平台和激光跟踪仪设计相应的试验,实验证明了该方法的可行性和准确性.