摘要
文章基于Abaqus/Explicit的Johnson-Cook材料模型以及断裂准则模拟高速正交切削Ti-6Al-4V,仿真分析了切削速度、切削深度、刀具前角变化时对平均切削力以及锯齿状切屑形态的影响。研究结果表明:切屑锯齿化程度和齿距随切削速度和切削深度的增加而增大,随前角的增加而减小。平均切削力在切削速度为60m/min-180m/min时趋于平稳,随切削深度增加而增大,随前角增大而减小。
A high speed orthogonal cutting Ti-6A1-4V of Johnson-Cook materials model and fracture cri- terion was established by Abaqus/Explicit. The influence of cutting speed, cutting depth, tool rake angel on the average cutting force and the chip morphology was discussed respectively. The investigation indi- cate that serrated degree of chips and teeth space was increased when increasing cutting speed and cutting depth, while tool rake angel is just the opposite. And the average cutting force was steadied during the cutting speed coming up to 60m/min-180m/min, it was increased with the increase of cutting depth, cut- ting force decreased with the increase of tool rake angel.
出处
《组合机床与自动化加工技术》
北大核心
2013年第2期47-49,53,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家重大科技专项(2012ZX04003-061)
关键词
锯齿形切屑
高速切削
切削力
serrated chips
high speed machining
cutting force
