缘条类复合材料零件变形修正系统的开发

Development of Deformation Correction System for Edge Strip Composite Parts

复合材料比强度、比刚度、可设计性高,目前已经在飞机制造上得到广泛应用,但受到回弹变形等因素的影响,零件几何精度较低,复合材料变形修正问题亟待解决。针对如何将复合材料变形修正工艺数模规范化、快速化构建等问题,本文提出了自动追踪、离散布点等辅助生成外形面的方法,提出了归并排序法、插值查找法等辅助生成内形面的算法,列举了部分构造工艺数模中用到的曲面处理方法,在CATIA环境下完成了复合材料零件变形修正系统的开发。经实例验证,修正后总体效率提升了734.5%,表明该方法能够高效、规范地构建工艺数模,提升工艺数模的生成效率。

Composite materials have high specific strength,specific stiffness and designability,which have been widely used in aircraft manufacturing.However,due to the influence of springback deformation and other factors,the geometric accuracy of parts is low,and the problem of composite material deformation correction urgently needs to be solved.Aiming at how to standardize and rapidly build the mathematical model of composite material deformation correction process,this paper put forward the automatic tracking,the discrete points and so on to assist the generation of contour surface,proposed the merge sort method,interpolation search algorithm and so on to assist the generation of inner surface.Some surface processing methods used in mathematical model construction were listed,and the deformation correction system of composite parts was developed under CATIA environment.The overall efficiency is improved by 734.5%after modification,which shows that the method can construct the technological mathematical model efficiently and normatively,and improve the generation efficiency of technological mathematical model.