선형 가변 대칭 U형 단면의 롤 포밍 공정 개발

A new roll forming process that can produce automotive parts with linearly variable symmetric U-type cross-sections has been developed. The forming rolls have been designed by a 3D CAD system and have been analyzed by a 3D FEM Software. The designed forming rolls were machined by a 5-axis CNC milling machine and experimental roll forming operation has been carried out. The analytical and experimental results were satisfactory. It has been found that the developed roll forming process can be an efficient method to produce high strength steel automotive parts with variable cross-sections.