In the latheing process

the cutting corner radius influences cutting forces

chip breaking

chip shaping

surface quality

machining deformation and the distribution status of residual stress.Adopted the analysis of Finite Element Method（FEM）

based on the orthogonal cutting process

the reasonable two-dimension milling model is established in this paper

which uses the adaptive meshing criteria.This paper simulates a typical work-piece chip breaking process

which gets the total status of residual stress distribution and the status

which is very significant in engineering.