Radial and axial enveloping rolling forming method for complex ribbed curved members

Abstract

The invention relates to a complex ribbed curved surface component radial and axial enveloping rolling forming method. A blank is placed in a female die and a complex ribbed curved surface component is formed by a rolling die. The method comprises the following steps that S1, the blank is designed, wherein the blank is a flat panel material, the shape of the blank is consistent with the shape of an outer contour of a to-be-formed complex ribbed curved surface component, and the size of the outer contour of the blank is larger than the size of the outer contour of the complex ribbed curved surface component; S2, an angle of cone of the rolling die is designed; S3, a radial and axial enveloping rolling center O' is determined; S4, a shape of the rolling die is designed; S5, an initial stageof radial and axial enveloping rolling is conducted; S6, a forming stage of radial and axial enveloping rolling is conducted; S7, a forming completion stage of radial and axial enveloping rolling is conducted; and S8, the component is ejected out. The complex ribbed curved surface component manufactured through the radial and axial enveloping rolling forming method is reduced in component reboundand high in forming precision, and the problem that traditional cutting machining is large in rebound is effectively solved.

Description

technical field [0001] The invention relates to the technical field of manufacturing complex ribbed curved components, more specifically, to a radial and axial enveloping rolling forming method of complex ribbed curved components. Background technique [0002] Complex ribbed surface components are widely used in the manufacture of rockets, aircraft cabins, storage tanks, etc., and their mechanical properties directly affect the carrying capacity and service life of cabins and boxes. At present, there are two methods for manufacturing complex ribbed surface components. One is the cutting method, which is to cut the blank into a complex ribbed surface component. This method has low material utilization rate, long manufacturing cycle, and the metal flow line of the component is cut off during the manufacturing process, which reduces the mechanical properties of the component and affects the cabin and box. The service life of the body. The other is to bend the cut complex plan...

AI Technical Summary

Problems solved by technology

One is the cutting method, which is to cut the blank into a complex ribbed surface component. This method has low material utilization rate, long manufacturing cycle, and the metal flow line of the component is cut off during the manufacturing process, which reduces the mechanical properties of the component and affects the cabin and box. service life of the body

The other is to bend the cut complex planar member with ribs into a curved member. This method has complicated bending process, serious member springback, difficult to guarantee the accuracy of the ribs, and the ribs are easy to lose stability or even break, and the ribs and the bottom plate are easy to produce Stress concentration seriously affects component reliability and service life

In summary, the existing manufacturing methods cannot meet the high-performance, high-efficiency, and low-cost manufacturing requirements of complex ribbed surface components. The high-performance, high-efficiency, and low-cost manufacturing technology of complex ribbed curved surface components has become the frontier of international major equipment manufacturing technology research.

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