Study Of Machining Deformation For Aeronautical Thin-Walled Components

The distortion of thin-walled parts due to maching is one of the critical problems in therapid development and the efficient production of our nation aeronautics and astronauticsdevices, which is seriously hampering the development of our aerospace industry. How toeffectively provide reasonable predicting and controlling for thin-walled components isbecome more and more imperative, thus has the extremely significance and value to themodern aircraft manufacturing. Many researches about this have been done by experts andscholars home and abroad, but the study to this problem has been slow. Therefore, thequestion goes a step further necessary to disscuss and study. In this paper, the millingdeformation of aerospace monolithic thin-walled parts was studied with the metheds of theorymodeling, FEA simulation and experiment verification.In this paper, a3D cutter model will be drawn by the UG software in the first place,which will import into the ABAQUS software. Then draw the required three-dimensional partmodel by the ABAQUS software and rig out it according to the actual location relations.Complete the pre-treatment of finite element after a series of model parameter optimization,grid set Optimization and other optimization steps, then using the better post-processingcapabilities of the ABAQUS finite element software to analyze the overall deformation ofthin-walled which caused by clamping, the processing deformation caused by the different ofthe various milling elements and the size of workpiece.The experiment for the machiningdeformation of thin-walled parts is caused by different clamping methods is conducted, Thus,we had some meaningful conclusion are arrived to the processing deformation rules ofaviation overall thin-walled. For example, when clamping and uninstall fixture, let’s start withrigid good clamping body which helps slow the deformation of milling thin-walled parts.Fortthis reason, we should note the rigidity while cutting the thin-walled parts.Next, this paperproposed other methods for the good of control machining deformation, That leads to severalthrory achievements, and to provide theory contributions for futher improve the study of milling deformation on thin-walled partsIn the end, systematical summary for the whole work in this dissertation is given, andanalyzed its merit and deficiency in this paper, provide necessary ground for the future, andsome outlook is raised for the further work.