Processing method of aircraft aluminum alloy special-shaped cockpit

Abstract

The invention relates to the field of aluminum alloy irregular part processing, particularly relates to a method for processing an aircraft aluminum alloy special-shaped cabin, which comprises the following steps of receiving materials: carrying out clamping after a reference plane is processed; rough machining: roughly milling the front surface and the back surface of a work piece respectively, carrying out the rough milling for at least two times and horizontally placing the work piece for a certain natural aging after each time of rough milling; finish machining: processing the non-cavity part of the work piece first by using a common milling cutter and then processing the cavity part by using a taper cutter; inspecting: omitting the bench-work process after the fishing machining. The invention aims at providing the method, by which the machining efficiency is improved and the workload is reduced, for processing the aircraft aluminum alloy special-shaped cabin.

Description

technical field [0001] The invention relates to the field of processing aluminum alloy special-shaped parts, in particular to a processing method for an aircraft aluminum alloy special-shaped cockpit. Background technique [0002] Over the years, the processing of special-shaped workpieces has been a hot spot in the processing field. For workpieces of different materials, the processing technology is very different, and aluminum alloy is one of the materials; [0003] Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. , especially in the aviation field, some aluminum alloys can be heat-treated to obtain good mechanical properties, physical properties and corrosion resistance. In recent years, t...

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Problems solved by technology

[0004] Due to the complex shape of this type of product, high coordination precision requirements, and the high strength of the aluminum alloy itself, it brings great difficulties to CNC machining, especially the cavity structure involved, one workpiece is deeper than other cavities Several cavities are often the most difficult to process. For aircraft aluminum alloy special-shaped cockpits, which are at least very low in rigidity during processing, the efficiency of conventional technology is very low, because when processing deeper cavities, the tool It is easy to interfere with the workpiece, and it needs to be repeatedly "finely carved", that is, to carry out multiple finishing processes, and to process slowly layer by layer, and it is impossible to directly use a milling cutter with a handle as long as possible to complete it. , the length control and the control of the clamping position are difficult, and it is easy to generate vibration. After such a tool is put into use, it is easy to break during the processing. The quality of the product, but this method is inefficient;

[0005] Therefore, there is a lot of controversy about the process of this kind of workpiece in the existing technology. The relatively clumsy and conservative processing method is generally adopted, that is, the above-mentioned "fine carving and carving". A separate fitter process is required, the workload is also very large, and the quality is not easy to guarantee

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