Research of intersecting line modeling method based on space analysis

This paper describes the intersecting line modeling method based on space analysis by taking the intersection of elbow to branch pipe which is difficult to model as an example. Many kinds of welding groove patterns calculation which is difficult for other modeling method is easy to deal with by this modeling method. So is the calculation of cutting trail compensation. In this way the cut of intersecting line will meet the process requirement.The research of this modeling method opens a good way to establish the model of intersecting line especially the difficult ones.