Finite Element Analysis Of Turning Process Used With The Symmetric Dual-tools In Slender Shaft

Shaft parts are widely used in various fields of industry, mainly used for transmission,connection and other important structures. In this part of dimension accuracy requirements arealso getting higher for the needs of the Industry and Technology Development. Improving themachining accuracy of the shaft parts for the needs of modern industrial development isimminent. The improvement of machining accuracy of shaft parts is difficult, the mainlyreasons are the parts will generate bending in slender shaft’s machining, vibration and otherfactors affect the amount of actual cutting tool. The result of their rigid and flexural bendingability are extremely poor and more easy to bend in the machining process,for the largelength-diameter ratio of slender shaft is greater than20, so that the machining accuracy ismore difficult to guarantee.To improve the machining accuracy of slender shaft is mainly to solve the bendingdeformation of the slender shaft. In this paper, the answer to this question first analyze all thefactors that caused slender shaft bending deformation, then established slender shaft’sbending deformation model under the cutting force, according to the analysis of research tofind the cause of slender shaft bending deformation factor is mainly the cutting radial force,finally starting from the radial force proposed the symmetric dual-tools turning to solve theproblem of deformation of slender shaft bending.Logical thinking of the argumentation ideas for this paper is based on modeling analysis-simulation study-experimental test: First using the mechanical method and singularityfunction method, respectively establishing the symmetric dual-tools turning model in bothcases that the cutting depth is equal and not equal, and then using DEFORM software to measurethe three component value, provides the main parameters for the following simulation, usingthe ANSYS software for statics, dynamics and buckling analysis, determining the relationshipof the cutting force, axial distance and feed force of the two knives that affect the bendingdeformation, the final selection of NZ-S1500/1000double turret lathe experiments is carriedout to test. Research results can obviously reduce the slender shaft bending deformation andeffectively improves the machining accuracy.This paper uses two kinds of finite element simulation software in the simulation study,using the MatLab correlation function and drawing function of Excel, enabling comparisonof simulation data and theoretical curves, saving a lot of time and manpower materialresources, Simulation results are in line with experimental data. During the simulation, afterrepeated simulation obtains relationship between the cutting data and a variety of cuttingparameters, provides an important reference for future research.