切削是包含弹性变形、塑性变形、断裂、剪切、冲击和热场等诸多力学现象的复杂 过程，滑移线场理论是分析正交切削过程的有效力学工具． 截至目前，国内外学者利用滑 移线场理论已建立了许多中低速条件下的经典正交切削滑移线场模型，为优化切削工艺 参数和指导切削过程提供了理论支撑;但是随着高速切削和微细切削的发展，目前的模型 无法完全解释切削过程的诸多物理现象． 文中回顾 70 多年来的正交切削滑移线场模型， 分析比较了各模型的前提条件和所侧重解决的问题，总结了目前各类模型的特点及不足 之处，对滑移线场模型( 包括均匀滑移线场、非均匀滑移线场、自由接触滑移线场、受限接 触滑移线场、切屑与工件过渡区滑移线线场、刀具钝圆滑移线场、刃口磨损( 负倒棱) 滑移 线场等) 进行了总结，并讨论了正交切削滑移线场模型未来的发展方向，为建立高速切削 和微细切削条件下的正交切削滑移线场模型奠定基础

 Cutting is a complex process involving many mechanical phenomena such as elastic deformation，plastic deformation，fracture，shear，impact and thermal field etc． Slip-line field theory is an effective mechanical tool for analyzing orthogonal cutting process． So far，many classical slip-line field models of orthogonal cutting at low and medium speeds have been established by scholars at home and abroad． Those models provide theoretical support for optimizing the cutting process parameters and guiding the cutting process． But with the development of high-speed cutting and micro-cutting，the current models cannot fully explain many physical phenomena in the cutting process． Therefore，the slip-line field models of orthogonal cutting in the past 70 years were reviewed，and the preconditions and applications of the models were analyzed and compared． The characteristics and disadvantages of various models were summarized． The slip line field models including uniform slip line field，non-uniform slip line field，free contact slip line field，restricted contact slip line field，slip line field in the transition zone between chip and work piece，blunt and circular slip line field of cutter，edge wear ( negative chamfering) slip line field，etc． were summarized． The future development of orthogonal cutting slip line field model was discussed， and laid a foundation for establishing orthogonal cutting slip line field model under the high speed cutting and micro cutting conditions．