Based on the experimental observation,the high speed formation courses of the continuous banding serrated chips are studied and analyzed.The findings show that,in course of serrated chip forming,the deforming material went through the both deforming stages of the plastic shear deformation and the local shear slip.The authors found cutting formulae on analyzing the serrated chip deforming mechanisms in periodicity and perform calculations of deforming parameters of the serrated chips forming with the formula...