陶瓷刀具断续车削淬硬钢切削力和切削温度的有限元分析  

Numerical Simulation of Cutting Force and Cutting Temperature in Intermittent Turning of Hardened Carbon Steel with Ceramic Inserts

作　　者：崔晓斌[1] 赵军[1] 郑光明[1] 郭胜光[2] 

机构地区：[1]山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南250061 [2]济钢集团重工机械有限公司,济南250101

出　　处：《组合机床与自动化加工技术》2010年第12期18-20,24,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家重点基础研究发展计划资助项目(2009CB724402);山东大学研究生自主创新基金资助项目(yzc10119)

摘　　要：为揭示Al2O3/(W,Ti)C陶瓷刀具断续车削淬硬钢时的切削力、刀具温度以及刀具应力的变化规律及相互关系,采用有限元方法进行金属切削仿真。仿真结果表明,断续车削过程中,刀具承受十分明显的周期性机械载荷冲击与热载荷冲击;单个切削周期内机械载荷与热载荷的变化规律体现了两者的密切相关性以及时间上的不一致性;由于剪切角偏转的影响,刀具最大主应力显著增大,所以切出过程对刀具破坏的作用尤为严重。The finite element method was applied to reveal the variation of cutting force,tool temperature and tool stress and the relationship among them in intermittent turning of hardened carbon steel using an Al2O3/（W,Ti）C ceramic tool.Results show that the cutting tool bears the impact of cyclical mechanical and thermal load during the intermittent cutting process.The law of variation of mechanical load and thermal load in one cutting cycle shows the close connection and the inconsistence between them.As a result of the influence of the deflection of shear angle,the maximum principal stress increases significantly.Therefore,the moment when the tool cut out has impact at higher level on the failure of the cutting tool.

关 键 词：陶瓷刀具 断续车削 切削力 刀具温度 剪切角偏转 

分 类 号：TG65[金属学及工艺—金属切削加工及机床]