A Spinning Forming Method of Thin-wall Curved Generator Parts

A technology of spinning forming and parts, applied in the field of metal plastic forming, can solve the problems of affecting the dimensional accuracy of the workpiece, large installation and positioning errors, and a large number of molds, and achieve the effect of improving production efficiency, improving part forming accuracy, and high product accuracy

CN108372223BActive Publication Date: 2020-05-19AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-05-19

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Abstract

The invention relates to a spinning forming method of a thin-walled curved-generatrix-shaped part. According to the forming method, a thick-walled barrel-shaped piece serves as a blank, after return spinning and segmented forming, the part is pushed to move forward by utilizing synchronous feeding of two rotating wheels to be separated from a spinning die to realize unloading, one-time spinning forming of the thin-walled curved-generatrix-shaped part is achieved, the number of dies is decreased, the number of spinning forming times is decreased, and the labor intensity of workers is reduced, so that the purposes of reducing the machining cost, shortening the production cycle, improving the production efficiency and improving the part forming precision are achieved, and meanwhile, the technical difficult problem that the thin-walled curved-generatrix-shaped part is difficult to unload is also solved.
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Description

technical field

[0001] The invention relates to a metal plastic forming method, in particular to a forming method of a thin-wall curved generatrix-shaped part, and belongs to the technical field of metal plastic forming. Background technique

[0002] Thin-wall curved generatrix-shaped parts are cones with constantly changing semi-cone angles. They are widely used in industrial production, especially in aerospace and other fields, such as aircraft auxiliary fuel tanks, engine covers, missile guidance cabins, and large launch vehicle engine nozzles. With the development of the aerospace field, the demand for equipment such as large-scale launch vehicles, long-range missiles, and large-capacity auxiliary fuel tanks has become increasingly urgent, and the research on the processing methods of thin-wall curved generatrix-shaped parts has become more and more intensive.

[0003] The forming process of thin-walled curved generatrix-shaped parts is generally a soft mold (half mold) ...

Examples

Embodiment Construction

[0042] The method for forming thin-walled curved generatrix parts of the present invention will be further described below in conjunction with specific examples, but the protection content of the present invention is not limited to the following examples.

[0043] A certain type of auxiliary fuel tank part is selected for the thin-wall curved generatrix-shaped parts, and a certain type of auxiliary fuel tank part is formed by spinning with a ring-rolled cylindrical blank. Each part is described in detail below.

[0044] (1) Part material:

[0045] The material of the auxiliary fuel tank parts is 5A06, which is a non-heat-treatable aluminum alloy, and the mechanical properties of the material can only be improved through work hardening. The material is severely work-hardened and needs to be heated during the spinning process. This process is suitable for all grades of aluminum alloys, and can be used as a reference for the forming of other materials such as carbon steel. Rou...