飞机承力构件测点处理与误差自动评估

Aircraft Load-Bearing Component Structure Measurement Point Cloud Processing and Error Automatic Evaluation

飞机承力构件是大型客机和战斗机的关键承压承载部件,在成形加工过程中易发生尺寸变形,而目前采用的卡尺、塞规检测方式存在检测效率低、结果一致性差等问题。为此,本文采用三维测量技术解决上述问题,通过提出基于标准球面特征的粗匹配方法和基于轴孔关键特征的精匹配方法,研究飞机承力构件尺寸/形位误差系统性自动计算方法,并基于自主开发的软件模块开展某型号飞机承力构件数字化检测试验。结果表明,所提方法相比人工检测方法在检测效率和稳定性方面得到显著提升。

Aircraft bearing component is the key bearing component of large passenger aircraft and fighter aircraft,which is prone to dimensional deformation during the forming process.However,the current caliper,plug gauge testing method has some problems,such as low efficiency and poor consistency of results.To this end,this paper intends to solve above problems by three-dimensional measurement technology.This paper proposes a crude registration method based on standard spherical characteristics and a fine registration method based on the shaft hole key characteristics.Meanwhile,studies the size/shade error systematic automatic calculation method of the aircraft support member,and conducts digital detection experiment of a model aircraft holder member based on autonomous software modules.The results show that the proposed method has significantly improved the detection efficiency and stability compared with the manual detection method.