基于有向点集的多面多孔式装配偏差分析与协调

Multi plane-and-holes assembly is a common connection process in assembly of large-scale aircraft or spacecraft products, and has many adjustment chains and complex assembly relationships. The trial and error mode of assembly work is difficult and needs to be repeated and adjusted, so the quality of assembly is poor and the assembly efficiency is low. This paper proposes the concept of "orientation point" to represent the position and posture of the hole or shaft. A multi plane-and-holes assembly mathematical model is developed based on the "orientation points" group. The Singular Value Decomposition (SVD) method is used to obtain the best-fit of orientation points groups. The calculation method for adjustment amount is given. According to the practical engineering requirement, a multi plane-and-holes assembly experiment is conducted in the laboratory environment. Experimental results show that the proposed methods are feasible for assembly deviation analysis and adjustment amount calculation based on measure data.