Multi-pass and multi-directional rotary rolling forming method for large horizontal and high-rib thin-walled rings

Abstract

The invention relates to a multi-pass multi-direction rotary rolling forming method of a large-scale transversely high-rib thin-wall ring component. The method comprises the following steps that S1, an annular blank and an annular push plate are sleeved on a constraint die, two rotary wheels which are symmetrical about the axial middle surface of the annular blank are in close contact with the twoend faces of the blank correspondingly, so that acting force is generated between the constraint die and the annular blank, and it is guaranteed that the constraint die can drive the annular blank and the rotary wheels to stably rotate; S2, the constraint die drives the annular blank and the rotary wheels to rotate around the self-axes correspondingly, and meanwhile, the two rotary wheels do feeding motion along a track, so that continuous local plastic deformation of the annular blank is generated until the annular blank is integrally formed; and S3, when the shape of a forming part is the shape of the target transversely high-rib thin-wall ring component, the constraint die stops rotating, the two rotary wheels return to the initial position, and the manufactured target transversely high-rib thin-wall ring component is pushed out from the constraint die through the annular push plate. According to the multi-pass multi-direction rotary rolling forming method, the large-scale transversely high-rib thin-wall ring component is locally formed through multiple passes, the method has remarkable effects of saving energy and material, reducing production cost, improving productivity andreducing forming force.

Description

technical field [0001] The invention relates to a precision rolling forming method for rings with special-shaped cross-sections, and more specifically, to a multi-pass and multi-directional rolling forming method for large-scale thin-walled rings with high transverse ribs. Background technique [0002] In aviation, aerospace and other manufacturing fields, lightweight structure is an important way to reduce energy consumption and improve aircraft endurance. Therefore, a large number of thin-walled structural parts, such as cabins, wings, and engine covers, are widely used in major equipment such as aircraft, rockets, and spacecraft. In order to improve the strength of these structural members, reinforcing ribs are usually provided on their surfaces. As a typical core load-bearing component of heavy equipment such as aircraft and rockets, large horizontal and high-rib thin-walled rings have extremely strict requirements on their forming accuracy and performance. For such la...

AI Technical Summary

Problems solved by technology

Due to the limitation of the external dimensions of the parts, it is difficult to form such large thin-walled rings with high horizontal ribs by using traditional forging methods

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