Flexible composite forming method of cylindrical member with grid ribs

Abstract

The invention discloses a flexible composite forming method of a cylindrical member with grid ribs. The method comprises the following steps that a panel billet is selected according to the size of the target member; the panel billet is placed onto a workbench of a press machine along a guide plate; an integrated grid rib structure is extruded on the whole billet through a continuous local extruding method, so that a planar grid plate is obtained; then a curved-face grid plate of the grid rib structure is formed by means of a three-roll bending method; and finally, the cylindrical element with the grid ribs is formed by means of a welding method. According to the flexible composite forming method, plastic working and welding are organically combined, the cylindrical member with the grid ribs can be formed precisely, efficiently and flexibly, the product quality and manufacturing efficiency are improved, the manufacturing cost is lowered, and the manufacturing range is expanded.

Description

technical field [0001] The invention relates to a flexible composite forming method of a cylindrical member with grid ribs. Background technique [0002] The cylindrical member with grid ribs is a key high-performance lightweight component for new aerospace and weaponry. This type of member is mainly made of aluminum alloy lightweight materials, with a large diameter and thin wall, and a criss-cross grid rib structure on the surface. The material is difficult to deform and the structure is difficult to form special components. The traditional manufacturing method of such components is usually to obtain a seamless or seamed cylindrical substrate by means of plastic forming such as spinning or sheet metal bending and welding, and then perform rib welding and cutting on the surface to obtain a grid tendon structure. The processing method of grid bars based on welding and cutting is not only very inefficient, but also a large number of welds have caused obvious limitations and...

AI Technical Summary

Problems solved by technology

However, it can be seen from the analysis of the reported situation that these new methods still have many limitations

First of all, they are only used to form simple inner surface transverse or longitudinal rib structures, and have not yet involved complex grid rib structures, and the process is complicated, the technical requirements are high, and various forming defects are prone to occur; secondly, their forming size range Limited by the processing capacity of the equipment, it is currently only suitable for small and medium-sized cylindrical parts with a diameter of about 1 meter; moreover, they need special equipment and molds, and due to the limitation of the processing range of special equipment, products of different specifications require different Equipment and molds, high investment

Due to these technical limitations, the above methods seem to be powerless for large thin-walled cylindrical members with grid ribs. Therefore, it is urgent to develop new high-performance, high-efficiency, and low-cost forming technologies for large thin-walled cylindrical members with grid ribs to meet Advanced Aerospace and Weapon Equipment Development Requirements

Images