On-line self-adaptive laser shot peening method and device for welded integral wall plate

Abstract

The invention discloses an online self-adaptive laser peening sizing method and a device for a welded integral panel. According to the technical scheme of the invention, the dimensions, sizing amount and material dynamic characteristics of the welded integral panel are online measured by virtue of optical online measurement equipment and a computer artificial intelligence technology, and setting and optimization for the parameters of a laser peening process are realized through expert system real-time data transmission and self-adaptive feedback control, thus automatic, digital and intelligent precise sizing for the welded integral panel is completed.

Description

technical field [0001] The invention relates to the field of aviation manufacturing, in particular to an online self-adaptive laser shot peening shape correction method and device for welding integral wall panels. Background technique [0002] Modern aircraft have high requirements for flight speed, load performance and fuel economy. Traditional riveted panels have been replaced by integral panels due to their shortcomings such as poor rigidity, strength and airtightness, low structural life, and heavy weight. [0003] In recent years, with the development of welding technology, there has been an integral wall panel structure welded by ribs and skin. This kind of welded integral wall plate can greatly improve the utilization rate of materials and greatly reduce the manufacturing cost of parts; and different alloy materials can be used for stringers and skins, which provides more space for the optimization of the overall wall plate structure design and further improves the qu...

AI Technical Summary

Problems solved by technology

[0010] 1) Off-line measurement of workpiece deformation is used, and the efficiency of deformation measurement is extremely low

[0011] 2) Off-line measurement requires disassembly and assembly of the workpiece, resulting in repeated positioning errors and large deformations, especially for large-scale aviation integral wall panels, it is difficult to repeat accurate positioning, and the laser peening parameters for the next step are deduced without considering repeated positioning errors impact, which is obviously insufficient in actual production

[0012] 3) The off-line measurement of laser peening residual stress is very troublesome, the stress measurement efficiency is low, and the residual stress value is not suitable as the basis for determining the next laser peening process parameters

[0013] 4) The process parameter determination mechanism of laser peening correction is simple, based only on the deformation amount setting, and lacks the process parameter optimization mechanism, resulting in the increase of iterative steps in the shape correction process and low efficiency