The essential theory about chip deformation and curls in metal cutting is discussed, the formation mechanics of different chip types between plastic metal and fragile metal is analyzed, and the basic principles of chip shape control are presented.

• 论述了金属切削过程中切屑变形与卷曲的基本原理 ,分析了塑性金属与脆性金属切屑的不同形成机理 ,提出了控制切屑形状的基本原则