일체화 성형 서브프레임 개발을 위한 벤딩 공정의 영향성 연구

A Study of Bending Process for Development of Subframe by Hydroforming

In the present study, subframe was developed using hydroforming technology. The manufacturing process for subframe consists of tube bending, pre-forming and hydroforming. The effects of bending process for manufacturing hydroformed subframe were researched. And the variables of bending process were studied by FEM simulation. The bending method is rotary draw bending that is the most popular, cost-effective bending method for thin walled tubes.