END PART FORMING METHOD FOR TUBE HYDROFORMING

摘要

PROBLEM TO BE SOLVED: To improve a working process of an end part of a tube formed by tube hydroforming. SOLUTION: Dies 3, 4 of hydroforming and an end part forming section 6A for tube forming of an axial pressing punch 6 are formed to a shape for forming a completed product, by conducting hydroforming as well as laterally pressing the axial pressing punch with a lateral pressing press toward a tube end, a tube having a prescribed tube end shape is formed.