High-speed cutting method of thin-walled pod part

Abstract

The invention relates to a high-speed cutting method of a thin-walled pod part and relates to the field of machining, in particular to a high-speed cutting method of a thin-walled pod part, comprising the following steps: milling front and back planes as well as a reference edge and a reference hole; rough machining and semi-finishing the front plane; filling a removed material part of the front plane, milling flat and turning over, and aligning the back plane according to the reference edge and the reference hole; rough machining and semi-finishing the back plane; finishing the back plane; removing front filling, filling a removed material part of the back plane, milling flat and turning over, and aligning the front plane according to the reference edge and the reference hole; finishing the front plane in the same finishing manner as the back plane. The method is high in machining efficiency and high in machining precision, low in cutting force, low in cutting temperature and low in environmental pollution, can ensure form and location tolerance of the thin-walled part and can provide higher economic benefit.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a high-speed cutting method for thin-walled pod parts. Background technique [0002] In order to meet the requirements of light structure, long life, supersonic speed, and high information perception ability, modern aircraft design adopts a large number of new technologies, new structures and new materials. Aeronautical structural parts are increasingly developing in the direction of complex structure, large size and precise manufacturing. This development trend determines the technological characteristics of structural parts: high precision requirements for parts; complex structure, difficult processing; large amount of cutting processing; thin wall, easy to deform. Among them, the high-precision, high-efficiency and high-reliability cutting of thin-walled integral structural parts has always been an important issue facing the aviation manufacturing industry. [0003] The ...

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Problems solved by technology

[0003] The rough parts of the aircraft pod are aluminum alloy pre-stretched sheets, the material is 7050-T351, the size is 800cm×570cm×85cm, the cross-section is less semicircular, all the wall thickness dimensions are 3.5±0.1mm, and there are two high 35mm, length 780mm, wall thickness 3.5mm vertical rib, the shape of the part is a curved surface, the surface size of the outer surface is R182.5mm, and the size of the inner surface is R78.5mm. It is a typical large-scale thin-walled aluminum alloy arc surface structure. Difficult to process in the process of processing, and variable, low processing efficiency, precision often does not meet the requirements

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