摘要
为了研究切削过程中的切削力和切削温度的分布和刀具磨损,优化高速切削参数,基于刚粘塑性有限元方法,采用有限元计算软件建立适于金属切削过程的三维有限元模型。模拟了45号钢的切削加工过程。主要研究了切屑的形成过程、切削力、温度场的分布以及切削应力的分布。详细分析了切削速度、进给量以及切削深度对切削力、刀尖温度以及刀具磨损的影响。该研究为金属切削加工选择合理的加工参数提供了理论依据。
In order to study the cutting force and cutting temperature distribution in the cutting process and tool wear,a three-dimensional finite element model that is suitable for metal cutting process is created by using the finite element calculation software DEFORM-3D. The rigid-viscoplastic finite element method is applied and the cutting process of bearing steel GCr15 is simulated. The chip formation process,the cutting force,the temperature distribution and the cutting stress distribution are mainly studied. The influence of the cutting speed,feed rate and depth of cut on the cutting force,the tool temperature and tool wear is analyzed in detail. The simulation results show that 3-D simulation can disclose the cutting status,and it puts up a more effective method for research of metal cutting theory. A theoretical basis for cutting is provided for reasonable choice of machining parameters.
出处
《组合机床与自动化加工技术》
北大核心
2017年第6期114-117,121,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
福建省中青年教师教育科研项目(JA15367)
厦门理工学院高层次人才项目(YKJ16029R)
关键词
有限元法
切削过程
数值模拟
finite element method
cutting process
numerical simulation
