A divisional milling method for weakly rigid profiles

Abstract

This application belongs to the field of numerical control machining, and specifically relates to a sub-area milling method for a weakly rigid surface, including the following steps: setting the cutting tool and parameters for part surface milling, including two schemes of less-tooth and multi-tooth tools, and measuring the cutting force , carry out the design of the test piece and the finite element simulation of the deformation of the tool, and obtain the simulated deformation U and position coordinates ( x , y ) relationship function U ( x , y ), according to the cutting test and processing requirements of the test piece to determine the critical value of the area division U s and U d , to carry out the finite element simulation of the part, and obtain the simulated deformation of the part U p and position coordinates ( x , y ) relationship function U p ( x , y ),Comparison U p ( x , y ) and the critical value determined in the fourth step U s and U d The relationship between the area division and matching parameters, output processing plan information such as processing area and parameters, programming for processing, improve the stability of weak rigid surface milling of aircraft structural parts, and avoid quality problems caused by processing deformation deviation.

Description

technical field [0001] The application belongs to the field of numerical control machining, and in particular relates to a sub-area milling method for weakly rigid profiles. Background technique [0002] Due to the performance requirements of high speed and high maneuverability of the aircraft, the structure of the aircraft structural parts is complex and has many thin-walled structures. The weakly rigid thin web and edge structures have large tool deformation during the processing process, resulting in deviations in processing dimensions. In order to ensure the shape and position accuracy of the structural parts after assembly, the shape and dimensional accuracy of the thin-walled structure of the structural parts are relatively high. The forced vibration amplitude of the process is very large, and the part structure vibrates violently during the intermittent processing such as milling, and defects such as surface vibration lines and pits are prone to occur on the processed...

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Problems solved by technology

Although the above-mentioned patents have improved the processing control method of weakly rigid parts, they cannot solve the problems of deviation and high quality risk of aircraft structural parts caused by milling deformation of weakly rigid surface structures

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