高速铣削高锰钢的铣削力模拟与试验研究

Study on simulating and testing of milling force for high speed milling high manganese steel

基于正交自由切削的切削力解析法原理,采用大变形有限元法及热弹塑性本构方程建立了高速铣削加工的有限元模型,对难加工材料高锰钢ZGMn13进行了高速铣削加工过程的模拟研究,模拟了切屑的形成过程及探讨铣削力的分布。并结合大量的铣削试验,分析了高速铣削高锰钢过程中铣削力受切削参数的影响及其变化规律。仿真结果与试验数据吻合,验证了所建立的有限元模型的正确性,可对铣削力随进给速度的变化规律进行有效地预测。

Based on the orthogonal free cutting principle, by adopting a large deformation finite ele- ment method and thermal elastic-plastic constitutive equation,a finite element model of high-speed milling is established.Then the milling process for material high manganese steel ZGMnl3 hard to machine was simulated,in which the chip formation process and distribution of cutting force are discussed.Combined with a lot of milling tests ,the influence of milling parameters on milling force is analyzed in high speed milling high manganese steel process ,which results are matched well after analyzing and discussing.It certifies that the finite element model is correct, and the milling force is predicted to change with feeding speed.