Method for manufacturing an inner reinforcing element of a three-dimensional vehicle door frame, method for manufacturing a vehicle door frame, and method for manufacturing a vehicle reinforcing structure

摘要

A three-dimensional vehicle comprising an inner center column part (66), an inner front column part (68), and an inner side rail part (64) that joins the inner center column part (66) and the inner front column part (68). A method of manufacturing a door frame inner reinforcement element (52). The method comprises the steps of providing an inner central column blank, an inner front column blank, and an inner siderail blank, the inner blank being substantially flat, and a substantially flat door frame inner reinforcing blank. Assembling the inner center column blank and the inner front column blank to the inner side rail blank, and hot-fixing the door frame inner reinforcement blank to form a three-dimensional door frame inner reinforcement element (52) Forging.