Unit average pressure in the external spline cold rolling process

The deformation process of external spline cold rolling was analyzed. By the graphic method, the slip-line field of plastically deformation area in external spline cold rolling process was set up. And different friction-conditions were used in different contact surface in order to really reflect the actual situation. The unit average pressure on contact surface of the rolling process was solved according to the stress filed theory of slip-line. According to the suitable assumption, the finite element model of spline cold rolling was established. Using the finite element analysis software DFEFORM, the cold rolling process was simulated. The results of numerical simulation in different parameters are well consistent with the theoretical ones.