钛合金小深孔钻削机理仿真研究

发布时间：2018-03-07 18:43

本文选题：深孔加工　切入点：枪钻　出处：《中北大学》2017年硕士论文　论文类型：学位论文

【摘要】：深孔加工技术诞生于枪炮的生产制造过程当中,一直以来被封闭在军工领域,随着世界经济的发展,开始向民用领域发展,并广泛应用于各个领域。钛合金由于具有强度高、耐热性好、耐腐蚀性强等优点被世界许多国家当作最重要的战略金属之一。但是钛合金属于典型的难加工材料,在钛合金的深孔钻削过程中容易产生摩擦力大、切削温度高、刀具磨损严重、排屑困难等对加工不利的现象。本文以金属切削原理为理论基础,借助Deform-3D有限元模拟软件,对枪钻钻削TC4钛合金的机理进行仿真研究。首先,分析了枪钻加工系统的基本结构和工作原理,并建立了枪钻的力学模型,以及钛合金的材料模型和有限元切削模型。然后,设计了枪钻钻削TC4钛合金的仿真实验,利用Deform-3D有限元软件对所设计的仿真实验进行了模拟,得到了不同钻削参数下切削力、扭矩的曲线图,以及切削温度、刀具磨损量的分布云图。最后,通过对比模拟结果,得到了进给量和切削速度两个切削用量与轴向力、扭矩、刀具磨损量的关系,并总结了其规律。本文研究成果对钛合金深孔钻削的实验研究有重要的理论意义和参考价值。
[Abstract]:Deep hole processing technology was born in the production and manufacture of guns and guns. It has always been closed in the field of military industry. With the development of the world economy, it began to develop to the civilian field and was widely used in various fields. Titanium alloy has high strength. The advantages of good heat resistance and strong corrosion resistance are regarded as one of the most important strategic metals in many countries in the world. However, titanium alloy is a typical refractory material, and it is easy to produce high friction and high cutting temperature in the deep hole drilling process of titanium alloy. Based on the theory of metal cutting and Deform-3D finite element simulation software, the mechanism of gun drilling and drilling TC4 titanium alloy is simulated. The basic structure and working principle of the gun drilling system are analyzed, and the mechanical model of the gun drill, the material model of titanium alloy and the finite element cutting model are established. Then, the simulation experiment of gun drilling for TC4 titanium alloy is designed. The simulation experiments are simulated by Deform-3D software, and the curves of cutting force, torque, cutting temperature and tool wear are obtained under different drilling parameters. Finally, the simulation results are compared. The relationship between feed rate and cutting speed and axial force, torque and tool wear is obtained, and its rule is summarized. The research results in this paper have important theoretical significance and reference value for the experimental study of deep hole drilling of titanium alloy.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG52

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