A kind of hot pressing forming method of aluminum alloy curved surface stiffener plate

Abstract

The invention discloses a hot-pressing forming method for an aluminum-alloy curved reinforcing rib plate. The method comprises the steps of 1, carrying out plane unfolding on the aluminum-alloy curved reinforcing rib plate; 2, preparing corresponding reinforcing ribs on the plate according to the positions of the reinforcing ribs in the plane unfolding diagram; 3, designing and processing a hot-pressing forming die of the aluminum-alloy curved reinforcing rib plate; 4, performing hot-pressing forming on the aluminum-alloy curved reinforcing rib plate; and 5, performing air inflation correction on the aluminum-alloy curved reinforcing rib plate. According to the method, the aluminum-alloy curved reinforcing rib plate is formed by adopting hot-pressing formation and air inflation correction combined technologies, the problem that the size precision and the profile precision of the parts are difficult to control in the conventional cold stamping or machining process is solved, the surface quality of the parts is improved, and the overweight problem in the casting process is avoided; firstly, hot-pressing forming is adopted so that resilience, wrinkling, cracking and other defects in the cold forming process can be effectively avoided; and then air inflation correction is adopted so that the size precision, the profile precision and the surface quality requirements of the parts can be guaranteed.

Description

technical field [0001] The invention belongs to the field of precision sheet metal processing, and relates to a hot pressing forming method for an aluminum alloy curved rib plate. Background technique [0002] Aluminum alloys are widely used in aerospace, rail transit, weaponry and other fields because of their excellent performance. In the field of aerospace, the integration and lightweight of aluminum alloy curved rib plate parts and components are getting higher and higher, and the requirements for manufacturing precision are getting higher and higher. In the field of sheet metal forming, the commonly used manufacturing methods of aluminum alloy curved rib plates mainly include cold pressing and casting. Cold forming is not only difficult to meet the requirements of dimensional accuracy, but also difficult to control the surface accuracy. Usually, a large number of manual corrections are required in the follow-up, the forming cycle is long, and defects such as springback...

AI Technical Summary

Problems solved by technology

[0003] The technical solution of the present invention is to provide a method for hot-pressing aluminum alloy curved ribbed plates, which can overcome the shortcomings of poor integrity of parts processed in the prior art, difficulty in controlling the shape accuracy, or high cost, and can effectively ensure that the aluminum alloy Precise Forming of Curved Rib Plate

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