正交车铣高强度钢切屑形成机理的研究  

Research on mechanism of chip formation in orthogonal turn-milling high strength steel

作　　者：金成哲[1] 贾春德[1] 

机构地区：[1]沈阳理工大学辽宁省高速切削工程技术中心,沈阳110016

出　　处：《哈尔滨工业大学学报》2006年第9期1610-1612,共3页Journal of Harbin Institute of Technology

基　　金：辽宁省教育厅科学研究计划资助项目(20040316);沈阳理工大学博士启动基金资助项目(20040307)

摘　　要：对正交车铣高强度钢的不同切屑形态进行了研究,结果表明,正交车铣切屑属于短的锯齿形切屑,不会损伤已加工表面,易于排屑,可以满足自动化生产要求.分析了正交车铣切屑的扫描电子显微镜的照片,发现有绝热剪切发生,证明正交车铣锯齿形切屑产生的原因是切屑内部的局部产生突变性剪切所造成的.In turn-milling experiment, it is found that in machining high strength steel by turn-milling the chip belongs to saw tooth chip. Such chip will not damage machined surface, which is easy to be cleaned up and can satisfy the demand of auto manufacture. By analyzing SEM photo of the chip in turn-milling, it is found that adiabatic shear take place inside the chip. It proved that the cause of saw tooth chip formation is local catastrophic shear.

关 键 词：正交车铣 切屑 绝热剪切 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]