Ti6Al4V钛合金大进给铣削3D有限元模拟分析

发布时间：2018-06-17 03:17

本文选题：D有限元模拟 + 大进给铣削　；参考：《工具技术》2015年12期

【摘要】：大进给铣削是提高钛合金等难加工材料粗加工效率的先进工艺技术之一,但其切削机理因与常规铣削不同而仍有待进一步研究。为此,以有限元法为研究手段,应用有限元分析软件Deform-3D对Ti6Al4V钛合金大进给铣削过程进行了模拟,分析了每齿进给量对铣削力和铣削温度等参数的影响。结果表明:随着每齿进给量的增加,铣削力和铣削温度均随之增加,每齿进给量对径向切深方向的铣削分力影响最大,最高切削温度出现在切屑与刀具前刀面接触且靠近刃口的位置,工件的最大等效应力分布在第一变形区。此外,与试验结果的对比分析表明,有限元模拟值与实测值的变化趋势一致,铣削力模拟值与实测值数值较为接近,但铣削温度模拟值与夹丝法半人工热电偶实测值仍相差一定数值。
[Abstract]:Large-feed milling is one of the advanced technology to improve the efficiency of rough machining of difficult materials such as titanium alloy, but its cutting mechanism needs further study because it is different from conventional milling. In this paper, the finite element analysis software Deform-3D is used to simulate the large feed milling process of Ti6Al4V titanium alloy, and the effect of feed per tooth on milling force and milling temperature is analyzed. The results show that the milling force and milling temperature increase with the increase of feed per tooth. The maximum cutting temperature appears in the position near the cutting edge and the chip is in contact with the cutting face of the cutting tool, and the maximum equivalent stress of the workpiece is distributed in the first deformation region. In addition, the comparison and analysis with the experimental results show that the variation trend of the finite element simulation value is consistent with the measured value, and the milling force simulation value is close to the measured value. But the simulation value of milling temperature is still different from the measured value of semi-artificial thermocouple.
【作者单位】：南京航空航天大学;
【基金】：国家科技重大专项(2014ZX04012014)
【分类号】：TG54

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