Curved Side Parts Subsidence Region To Conduct Technical Studies

There are a lot of deflange structure in sheet metal parts of an airplane , the part should be developed first so as to give the roughcast. Working out the shape of roughcast correctly according to a part can not only save material but also decrease the trimming workload and achieve the aim to reduce production cost and improve forming quality. The problem of developing bend curve parts needs to be solved imminently.According to the project, author studies secondary development technology based on CATIA V5 software and applies it in the project to develop an applied software.There are some parts with joggle in sheet metal parts of airplane and we haven't got an exact way to develop these parts currently, people develop parts with joggle mainly by experience. This paper analyses character of joggle and introduces a way to develop joggle based on the rule of geometric modeling method, applying this method, the author developed a software to develop joggle approximately and to display the result by doing secondary development based CATIA using CAA. Finally, author shows an example to demonstrate the result of the software.This paper questing for solving the problem of development joggle of deflange, the production of this paper has some applying worth in engineering.