共查询到20条相似文献,搜索用时 109 毫秒
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采用金属成形有限元分析软件Deform3D建立了可转位硬质合金车刀车削45钢的三维斜角切削有限元模型,利用该模型进行了切削加工模拟,得到切削力的数值并给出了切削力随时间的变化曲线.通过设置不同的切削参数,对不同参数下的车削力进行比较,分析各个切削参数对车削力的影响规律,为研究刀具的切削性能提供有用的数据. 相似文献
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基于DDFORM-3D的高速车削有限元模拟 总被引:1,自引:0,他引:1
基于有限元分析软件DEFORM-3D建立高速切削的切削力预报模型,并对车削力和工件、刀具及切屑的温度分布进行模拟。该模拟结果对实际工作有现实的作用。 相似文献
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为了研究高速切削Inconel 718的切削力经验公式和各切削参数对切削力的影响显著程度,应用涂层硬质合金刀具对Inconel 718进行了正交车削试验,得到了硬质合金刀具车削Inconel 718的切削力经验公式。分析结果表明:对切削力影响最大的因素是进给量,切削深度和切削速度对试验结果的影响依次减弱。用涂层硬质合金刀具KC5510精车Inconel 718时,采用小进给量、小切削深度、高切削速度可以得到小的切削力,取得良好的切削效果。 相似文献
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基于微细正交车铣加工的切削力进行有限元建模,针对微细加工建立了材料本构模型,引入应变梯度理论,使模拟过程中的切削力更真实地反映实际加工过程;通过建立车削轴工件和铣削轴刀具均旋转的三维正交车铣模型增加了模型的真实性,利用ABAQUS有限元分析软件对微细车铣加工中的切削力进行建模,并设计了测试系统,验证了模型的有效性。对比分析理论模型和实验测试,结果表明,所建立的切削力仿真模型与实验结果基本吻合,可以利用此模型预测切削力、优化切削参数以及进行进一步的研究。 相似文献
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高速车削镍基高温合金GH4169的切削力仿真研究 总被引:1,自引:0,他引:1
基于Deform 3D仿真软件建立了GH4169高温合金高速车削的有限元模型,采用四因素三水平正交试验方法研究了切削用量和刀具几何参数对切削力的影响规律,并建立了切削力经验公式。研究结果表明:在高速车削GH4169的过程中,对切削力影响最大的参数是切削深度,其次是进给量和前角,最后是刀尖圆弧半径;切削力随切削深度和进给量的增大而增大,随前角的增大呈现先降低又升高的趋势,而刀尖圆弧半径增大时切削力变化不大;最佳参数组合为:进给量0.2mm/r,切削深度0.4mm,前角10°,刀尖圆弧半径0.2mm。 相似文献
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基于DEFORM-3D的高速车削加工仿真 总被引:3,自引:0,他引:3
DEFORM-3D是应用有限元方法(FEM)分析三维复杂加工过程的模拟工具,它不仅鲁棒性好,而且易于使用.借助于该模拟分析环境,能够对切削过程中刀具几何参数、切削条件以及加工过程中的其他因素产生的影响进行研究.应用DEFORM自带的切削仿真模型,模拟高速车削加工中工件及刀具的温度分布、切屑流动、应力、应变和切削力等.模拟结果对减少产品试验、降低开发成本、缩短开发新产品及新工艺的时间等方面都具有重大意义.DEFORM-3D对于研究刀具几何模型、切屑形成以及切削参数控制的刀具制造者和使用者来说,是一个较理想的工具. 相似文献
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Gaetano Massimo Pittalà Michele Monno 《The International Journal of Advanced Manufacturing Technology》2010,47(5-8):543-555
Milling operations are very common in manufacturing. Often it represents the last operation, determining the final product quality. Then an accurate mathematical model is important in order to design the cutting process, in terms of cutting process, and the geometry of the insert, for tool manufacturers. The finite element modeling (FEM) simulation permits the prediction of the cutting forces, stresses, and temperatures of the cutting process. The 2D FEM can be a reasonable approximation, where the deformation can be considered plain. For the milling operations, this assumption can be suitable if the depth of cut is much bigger than nose radius. But in the normal situation the insert has a complex geometry and the bidimensional model of the milling operation is not appropriate. The 3D FEM involves different element formulations, different remeshing algorithm, and different boundary conditions, so an independent approach is necessary. The approach followed in this paper is to model three-dimensionally the milling operation, considering the real geometry of the insert. The FEM simulation is carried out with a commercial code (3D DEFORM?). First the rheological model has been calibrated using OXCUT software, developed at the ERC/NSM, and a sensitivity analysis about friction model has been performed. Milling tests are conducted and the measured cutting forces are compared to finite element modeling results. The results show an acceptable agreement with experimental results in the range of cutting speed and feed rate considered. 相似文献
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2D-FEM SIMULATION OF THE ORTHOGONAL HIGH SPEED CUTTING PROCESS 总被引:6,自引:0,他引:6
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Orthogonal cutting of hardened AISI D2 steel with TiAlN-coated inserts—simulations and experiments 总被引:2,自引:2,他引:0
Feng Jiang Lan Yan Yiming Rong 《The International Journal of Advanced Manufacturing Technology》2013,64(9-12):1555-1563
This paper presented a finite element simulation model for the analysis of AISI D2 steel turning with TiAlN-coated inserts. In this study, material constitutive model of hardened AISI D2 steel (HRC62) was built based on power law relationship, which was used in the FEM codes to describe the effect of strain, strain rate, and temperature on the material flow stress. A damage model was employed to predict the chip separation. Cutting edge radius and thickness of TiAlN coating were obtained by micro-optical system and SEM, respectively. The average friction coefficients were obtained by ball-on-disk friction test using UMT-2 high-speed tribometer. Numerical simulations of AISI D2 steel turning were performed using AdvantEdge? software. The simulated results of forces and chip morphology showed good agreement with the experimental results, which validated the precision of the process simulation method. The shear stress on the interface between coating and substrate of cutting tool was analyzed. And the maximal shear stress between coating and substrate was found on the cutting edge roundness near the flank face of cutting tool. 相似文献
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硬质合金可转位车刀刀片的力学特性分析 总被引:1,自引:0,他引:1
为了深入研究切削过程中可转位刀具的力学特性,以硬质合金可转位车刀刀片为例,采用三维有限元方法对金属的切削加工过程进行模拟计算。考虑实际刀片几何形状及其安装角度,基于三维建模软件SolidWorks,建立了硬质合金可转位刀片三维立体模型;通过切削力试验测得切削力,利用内嵌于SolidWorks之上的COSMOS\works对该刀片加载求解,进行应力场分析。结果表明,利用有限元方法对硬质合金可转位刀片分析的结论与其实际加工状况较为相符,为可转位刀片的优化设计提供了一定的方法和依据。 相似文献