A flexible mold applied to creep aging forming and creep aging forming method

Abstract

The invention discloses a flexible mold applied to creep aging forming, which comprises a blank holder, a unit body, a side wall, a fixed plate, a hydraulic cylinder, a base, a bracket, a hydraulic control system, a hydraulic oil connection pipe, a bracket and a A plurality of hydraulic cylinders distributed in a dot matrix are all arranged on the base, side walls and fixed plates are arranged on the bracket, and through holes corresponding to the positions of the hydraulic cylinders are opened on the fixed plate, and the unit body includes the unit body body and the spherical end , the main body of the unit body is matched through the through hole, the lower end of the main body of the unit body is connected with the piston of the hydraulic cylinder, and the edge strip is set on the side wall; the upper surface of the spherical end is a spherical curved surface, and the top surface of the spherical end forms a mold shape surface; the hydraulic control system adjusts the change of the mold surface by controlling the lifting and lowering of the piston in the hydraulic cylinder. The invention also provides a creep aging forming method based on a flexible mold. The invention solves the problem of frequent replacement of profiles and even replacement of molds in the face of forming components with different curvatures.

Description

technical field [0001] The invention belongs to the technical field of creep aging forming of aluminum alloy components, and in particular relates to a flexible mold applied to creep aging forming and a creep aging forming method. Background technique [0002] Creep Age Forming (CAF) is a new sheet metal forming method developed to realize the collaborative manufacturing of high performance and precise forming of large integral panel components, with high forming precision. The design of existing creep aging forming dies is relatively cumbersome: after the mold surface is determined, due to the large springback of the component after unloading, it is necessary to predict the springback and compensate it on the mold surface to obtain the desired target component shape . The prediction of springback and the compensation optimization of forming tooling surface have always been the key issues in creep aging forming technology. On the basis of such a cumbersome and time-consumi...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a flexible mold applied to creep aging forming, so as to solve the problem that the existing creep aging forming mold proposed in the background technology faces members with different curvatures, or changes in springback due to temperature or materials , it is necessary to frequently change the surface or even replace the mold, resulting in the problems of low mold applicability, high cost and low production efficiency

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