Research On The Virtual Manufacturing Technology Of Welding In Body Side In Body-in-White

With the development of the science and technology, the automobile has becomean important transportation tool in our daily life. Now all automobile manufacturingentreprises improve welding efficiency in order to win in the fierce competition. Inthe four vehicle processes, including pressing, welding, painting and finalassembling, welding impacts significantly on the car body precision and quality.Therefore, it is important to do some research in the welding of car body.Body_side (BS) is an important part of the Body-in-White (BIW). It mainlyinfluences on the appearance and its safety performance of the vehicle. In this paper,a certain station of BS was analyzed by means of Delmia, including theestablishment of simulation workstation, analysis of welding process and therelationship between coordinate systems of welding points during the process ofwelding. Through analyzing welding processes, we can draw a conclusion that thedistribution of welding points distribution can be regarded as the0-1packageproblem, and then the mathematical model of welding points distribution wasestablished. The relationship between welding points was obtained throughanalyzing the coordinate system of all welding points. The Ant Colony Optimization(ACO) was used to plan the welding path in order to get the optimal path on thecondition of meeting the requirements of cycle time.The research on the welding process of BS has an instructive effect on the wholebody welding. And the relationships among the axis of robots were obtained byanalyzing welding points transformation which will bring to a theoretical effect onthe stable analysis of robots during working process.