摘要
基于有限元技术的三维铣削仿真对于改善工艺参数、实现高效高质加工具有重要意义。以Ti6Al4V为工件材料,建立了接近实际铣削加工的有限元模型,成功模拟了切屑的形成过程,模拟的切屑形态与真实切屑形态相似;根据应力与温度分布云图对工件的应力场和温度场进行了分析;应用所建模型模拟了不同铣削速度时的3个方向切削力,分析了模拟结果,并进行了与模拟同样条件的测铣削力实验。通过对比切削力的模拟值与实验值,验证了铣削模型的正确性,此模型可用于优化铣削参数。
The simulation for three dimensional milling process based on finite element method has great significance for improving process parameters and realizing high efficiency and high quality machining. In this paper, a three dimensional finite element model for milling Ti6Al4V alloy workpiece which was closer to the actual milling process was developed. The formation process of chip was simulated, and its morphology was similar with the experimented chip morphology. The contours for stress and temperature of workpiece and the cutting forces under various milling speeds were simulated with this model. Milling force experiments were carried out under the same cutting conditions as those of the simulations. The correctness of the simulation model was verified by the good agreement between the simulated results and the experimental results, and the presented model cn be further used in the optimization of milling parameters.
出处
《机械科学与技术》
CSCD
北大核心
2014年第7期1036-1039,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
中航产学研创新基金项目(CXY2010SH29)资助
关键词
三维铣削
有限元
切屑形态
切削力
ABAQUS
chip morphology
constitutive models
cutting force
finite element method
optimization
temperature
three dimensional milling
titanium alloys
