Milling clamp for finely cutting large-scale double-curvature aircraft skin

Abstract

The invention discloses a milling clamp for finely cutting large-scale double-curvature aircraft skin. The milling clamp comprises a positioning suction assembly (2), an auxiliary clamping plate positioning assembly and a base platform (7). The positioning suction assembly (2) is fixed on the base platform (7), the profile of the positioning suction assembly (2) is consistent with the profile of the aircraft skin, and an air extraction groove is arranged in the positioning suction assembly (2). The auxiliary clamping plate positioning assembly comprises an auxiliary clamping plate (3) and a positioning seat (8), wherein the positioning seat (8) is fixed on the inner side of the positioning suction assembly (2) and fixed on the base platform (7), and the auxiliary clamping plate (3) is fixed on the positioning seat (8). The positioning suction assembly (2) and the auxiliary clamping plate (3) are attached to the aircraft skin together. The base platform (7) is provided with a joint (5)which is connected with a vacuum pump and is used for vacuumizing a formed cavity. According to the milling clamp, full vacuum suction is adopted, compression of the aircraft skin and the milling clamp is achieved, displacement is not prone to being generated, the precision cutting quality is guaranteed, and precise shape cutting with no margin can be realized.

Description

technical field [0001] The invention belongs to technological equipment for mechanical processing, and relates to a milling fixture used for precise cutting of large hyperbolic aircraft skins. Background technique [0002] At present, the large-scale hyperbolic aircraft skin generally has problems such as difficult processing technology, complicated process, and manual trimming. When manual trimming is performed on large hyperbolic aircraft skins, the error of manual trimming is usually relatively large. In the aircraft assembly process, a large amount of filing work is required, which cannot be realized at all. Assembling riveting without margin will seriously affect the production schedule of the aircraft, so it is necessary to redefine and design the existing skin processing technology. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a milling fixture for fine cutting of lar...

AI Technical Summary

Problems solved by technology

[0002] At present, the large-scale hyperbolic aircraft skin generally has problems such as difficult processing technology, complicated craftsmanship, and manual trimming.

When manual trimming is performed on large hyperbolic aircraft skins, the error of manual trimming is usually relatively large. In the aircraft assembly process, a large amount of filing work is required, which cannot be realized at all. Assembling and riveting without margin will seriously affect the production schedule of the aircraft, so it is necessary to redefine and design the existing skin processing technology

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