Large-scale machining method for aluminum alloy empennages

Abstract

The invention relates to a large-scale machining method for aluminum alloy empennages, belonging to the field of empennage machining. The machining method for the empennages comprises the steps that firstly, a blank material and a mould are heated to phase-transition temperature of the blank material, and the heat preservation time is more than 2 hours; the aluminum blank material is extruded into an empennage profile material through the extrusion mould; the empennage profile material is an equilateral prismatic barrel-shaped structure with openings at two ends; the length of the prismatic barrel is matched with the multiple of the length of an empennage product; the inner shape and the outer shape of each quadrangular side wall of the prismatic barrel are matched with the shape of the inner side plate surface and the shape of the outer side plate surface of the empennage product; the extruded empennage profile material is subjected to solid solution and aging treatment; and finally, the empennage profile material is machined into empennage finished-products of which the appearances are consistent with the appearance of the empennage product. By adopting the empennage machining method, machining on the empennage profile material is realized; one-step forming of multiple empennage blanks can be realized; the material utilization rate of empennage machining is improved, and machining efficiency is improved; and manufacture cost is lowered.

Description

Technical field [0001] The invention relates to a mass processing method of an aluminum alloy tail wing, which belongs to the field of tail wing processing. Background technique [0002] There are mainly two methods for processing the aluminum alloy tail of existing rockets. [0003] First, the use of aluminum plate integral machining forming, this method has the following disadvantages: [0004] 1) Extremely easy to deform. Due to the large margin and the large residual stress after processing, the processed tail fin is prone to deformation. [0005] 2) Due to the large machining allowance, the tool wear during the machining process increases, which increases the machining cost. [0006] 3) Low material utilization. [0007] 4) Long processing cycle and low efficiency. [0008] Second, apply the aluminum alloy warm extrusion process to positively extrude the aluminum plate into a billet similar to the structural size of the tail wing, and then machine-add it. This method has the follo...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a mass processing method for aluminum alloy tail fins in order to solve the disadvantages of low material utilization rate, low processing efficiency, and high processing cost in the traditional aluminum alloy tail fin processing technology.

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