铝合金轮毂切削毛刺仿真与实验研究
首发时间:2018-06-11
摘要:金属切削加工毛刺的存在严重影响铝合金亮面轮毂的生产制造。本文通过建立A356铝合金在二维平面内切削速度方向的毛刺模型,探究了毛刺产生过程中负剪切区内材料的变形过程,并通过正交仿真实验得到了毛刺长度的回归预测公式,基于极差分析与方差分析得到了工件终边角度、刀具前角、背吃刀量、切削速度等因素对毛刺长度影响的显著性判断及影响规律,最后通过切削实验对仿真结果进行了验证。实验结果表明,正交仿真结果与实验结果吻合较好,验证了研究结果的正确性,为制定更加合理的铝合金轮毂加工方案奠定基础。
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Finite element simulation and experiment study on cutting burrs
Abstract:The existence of metal cutting burrs seriously affected the production of alloy aluminium wheel hubs which have bright surface.This paper presents a cutting speed direction burr model of orthogonal cutting and the part material is A356 aluminum alloy.Explores the deformation process in negative shear zone when zhe burrs were generating. The length of burrs was obtained by designing orthogonal FEM simulation and fitting regression formula.Through the range analysis and ANOVA analysis, significant judgment and influence rules of various factors has been described,The influencing factors include the exit angle of workpiece, the rake of tool, the cutting depth and the cutting speed. Finally, a cutting experiment based on the aluminum alloy wheel hub has conducted,the result proved the feasibility of using the simulation analysis for solving the burr problem, and laid the foundation for the development of more reasonable alloy wheel hub processing scheme.
Keywords: Alloy Aluminium Wheel Hub Cutting Burr Predict FEM Orthogonal Experiment
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