Design method of creep age forming die for multi-thickness part

A technology of creep aging forming and design method, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., to achieve the effect of saving mold design and processing costs and improving production efficiency

Inactive Publication Date: 2021-11-02
CENT SOUTH UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a design method for the creep aging forming mold of multi-thickness components. For the given component forming range, by changing the overall rigid body of the component, the same set of molds proposed in the background technology cannot be used for creep aging. Problems in forming components with similar shapes and different thicknesses

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  • Design method of creep age forming die for multi-thickness part
  • Design method of creep age forming die for multi-thickness part
  • Design method of creep age forming die for multi-thickness part

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Embodiment

[0036] This embodiment provides a design method of a creep aging forming mold for a multi-thickness component. The forming mold is used to form a target curved surface component with a thickness range of 3-10 mm, and the target curved surface component is an aluminum alloy ellipsoid double curvature curved surface component.

[0037] The specific design method includes the following steps:

[0038]1. Cut the blank into a circumscribed trapezoid in the planar shape after the curved surface member is unfolded, and its size is 740mm for the upper bottom, 1350mm for the lower bottom, 1400mm for the height, and 10mm for the thickness;

[0039] 2. The forming material of the target surface component is 2219 solid solution aluminum alloy, and its mechanical properties and material parameters at the optimum aging temperature of 165°C are shown in Table 1 below:

[0040] Table 1 Mechanical properties and material parameters of 2219 solid solution aluminum alloy at an aging temperature ...

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Abstract

The invention discloses a design method of a creep age forming die for a multi-thickness part. The design method comprises the following steps that S1, a three-dimensional model of a target curved surface part is established according to the thickness range of a target curved surface part, plane unfolding is carried out on the three-dimensional model of the target curved surface part, and a blank matched with the unfolded plane shape of the target curved surface part is designed; S2, the blank is endowed with material parameters and creep constitutive characteristics, finite element simulation software is used for simulating the creep age forming process, and a preliminary die profile is obtained; S3, matched laminated plates for the target curved surface parts with other thicknesses are selected; S4, the matching and stacking mode rules of the thicknesses of the curved surface parts with different thicknesses and the required laminated plate are obtained; and S5, a final die profile is obtained, and the forming die is obtained through machining. According to the forming die designed through the method, the same set of die can form parts with different structures or thicknesses and similar geometrical characteristics, and the die design and machining cost is effectively saved.

Description

technical field [0001] The invention relates to the technical field of integrated manufacturing of large-scale components, in particular to a design method of a creep aging forming die for multi-thickness components. Background technique [0002] In the creep-aging precision forming process for complex curved surface components (such as tank melon petals, etc.), the forming accuracy is mainly determined by the shape of the mold and the forming process (including pressure, temperature, and time). In the actual creep aging forming process, in the unloading stage, due to the springback of the component, and the springback has a great relationship with the thickness and structure of the component, when the thickness of the curved thin-walled component changes, the original The mold no longer meets the requirements of precise forming, and the need to redesign or process the mold will cause a lot of waste of manpower and financial resources. [0003] At present, the method of sec...

Claims

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Application Information

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IPC IPC(8): C21D9/00G06F30/17
CPCC21D9/0068G06F30/17
Inventor 湛利华王景旗鄢东洋刘德博杨瑞生胡正根王鹏王晓博彭南辉
Owner CENT SOUTH UNIV
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