Numerical simulation of cold rolling involute spline forming

Using explicit central difference algorithm, the numerical simulation of cold rolling involute spline is accomplished by finite element method. The metal flowing law and the stress and strain field of involute spline are presented. Comparing and contrasting simulation results with experimental results, some conclusions can be obtained as follow. Metal flowing accords to minimal damp law in the process of cold rolling. To improve formation precision, the dentiform errors of spline caused by elastic deformation should be corrected. And the correcting method is presented in this paper by enlarging the outer diameter of workpiece designed with the experiential method. It is helpful for improving cold rolling system design and studying ulteriorly the forming mechanism of cold rolling involute spline in quantitative analysis.