超声硬切削45淬硬钢的切削温度研究  

Study on Cutting Temperature under Ultrasonic Hard Turning 45 Hardened Steel

作　　者：焦锋[1] 赵勇[1] 李太平[1] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《机械设计与研究》2009年第4期80-82,共3页Machine Design And Research

基　　金：河南理工大学博士基金资助项目

摘　　要：与普通切削相比,超声切削工艺具有很多优点,可以有效地改善淬硬钢难切削的特点。在有限元软件MSC.Marc中,针对PCBN刀具超声硬切削和普通硬切削的特点,建立了二维正交热力耦合模型,对这两种状态下的切削温度进行分析比较,发现超声振动状态下的切削温度明显低于普通状态;并且切削温度随切削深度及切削速度的增加而升高。仿真结果与单因素试验结果具有较好的一致性。Compared with conventional turning, ultrasonically assisted turning demonstrates many advantages and it can get rid of the defect of turning hardened steel. Utilizing MSC （ Marc finite element software）, 2-D orthogonal thermal-mechanical coupling models are established based on the features of ultrasonically hard turning （UHT） and conventional hard turning （CHT） with PCBN cutting tool. It is found that the cutting temperature under UHT is much lower than that under the conventional condition. Furthermore, both the simulation and test show that the cutting temperature during UHT and CHT increases with the cutting speed and cutting depth. The simulation result is well consistent with the single factor experimental result.

关 键 词：超声硬切削 有限元分析 热力耦合 

分 类 号：TJ765.43[兵器科学与技术—武器系统与运用工程]