摘要
传统铣削仿真往往基于宏观建模而忽略了切削刃钝圆半径,对于微切削过程中出现的尺度效应以及最小切削厚度等特有现象无法进行准确描述,与实际加工差距较大。本文利用有限元软件ABQUS/Explicit对AZ31b镁合金材料微铣削过程进行三维变切削厚度仿真,采用ALE自适应技术控制网格畸变过大问题,进而获得了反映尺度效应的微铣削模型,并研究了主轴转速、铣削深度、每齿进给量对于铣削力的相关影响。
The traditional milling simulation based on macro modeling and often overlooked by cutting edge blunt round radius, for the scale effect of micro cutting process and the minimum cutting thickness cannot accurately describe the phenomenon, and the actual machining gap is bigger,in this paper, by using the finite element software ABQUS/Explicit micro milling process of AZ31 b magnesium alloy material three -dimensional cutting thickness simulation, using the ALE adaptive control mesh distortion is too large, then get the reflect the size effect of micro milling model, and study the spindle rotation, milling depth, each tooth feed for milling force influence of micro milling mechanism.
出处
《工具技术》
北大核心
2017年第4期18-21,共4页
Tool Engineering
基金
国家自然科学基金(51575375)
关键词
微铣削
切削力
尺度效应
有限元仿真
micro milling
cutting force
scale effect
finite element simulation
