球头铣刀动态铣削力数值仿真
发布时间：2018-08-17 16:12
【摘要】：为了优化设计球头铣刀铣削复杂曲面的铣削力,将切削刃离散为切削微元,建立斜角切削模型。在等效平面内综合虑加工硬化、应变率及温度的影响,将二维正交切削叫ey模型沿用到斜角模型中计算流动应力及微元切削力。利用铣削刀具-工件接触区域确定刀刃微元切削状态,建立任意进给方向及曲面曲率的铣削力数值模型。运用Ansys-Dyn软件进行金属三维切削仿真分析,经结果对比验证,提出铣削力数值模型的有效性,且计算时间和所需存储空间远远小于有限元分析。证明改进数值模型可作为立铣,车削及钻削等其它金属加工方式的优化设计参考。
[Abstract]:In order to optimize the design of milling force of complex curved surface with ball end milling cutter, cutting edge was discretized into cutting micro element, and the cutting model of oblique angle was established. Considering the effects of work hardening, strain rate and temperature in the equivalent plane, the two-dimensional orthogonal cutting model called ey model is used to calculate the flow stress and the micro-element cutting force in the diagonal model. The cutting force numerical model of arbitrary feed direction and curved surface curvature is established by using the contact region of milling cutter and workpiece to determine the cutting state of cutting edge. The numerical model of milling force is proved to be effective by using Ansys-Dyn software to simulate the three-dimensional cutting of metal, and the computing time and storage space are much smaller than that of finite element analysis. It is proved that the improved numerical model can be used as a reference for the optimization design of other metal machining methods such as end milling, turning and drilling.
【作者单位】： 中南大学机电工程学院;
【分类号】：TG54
[Abstract]:In order to optimize the design of milling force of complex curved surface with ball end milling cutter, cutting edge was discretized into cutting micro element, and the cutting model of oblique angle was established. Considering the effects of work hardening, strain rate and temperature in the equivalent plane, the two-dimensional orthogonal cutting model called ey model is used to calculate the flow stress and the micro-element cutting force in the diagonal model. The cutting force numerical model of arbitrary feed direction and curved surface curvature is established by using the contact region of milling cutter and workpiece to determine the cutting state of cutting edge. The numerical model of milling force is proved to be effective by using Ansys-Dyn software to simulate the three-dimensional cutting of metal, and the computing time and storage space are much smaller than that of finite element analysis. It is proved that the improved numerical model can be used as a reference for the optimization design of other metal machining methods such as end milling, turning and drilling.
【作者单位】： 中南大学机电工程学院;
【分类号】：TG54
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【共引文献】
相关期刊论文 前10条
1 周锡宝;李Z，
本文编号：2188187
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