Actual Problems in Machine Building 2015 No. 2

Actual Problems in Machine Building. 2015. N 2 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 136 STAMPING OF THIN-WALLED WORKPIECES BY ACTIVATING CONTACT FRICTION FORCES Poksevatkin M. I. , Ph.D. (Engineering), Professor, e-mail: mitomd83@gmail.com Ivanaiskii A. А. , Ph.D. (Engineering), Associate Professor, e-mail: ndt_sib@mail.ru German S. V. , Ph.D. student, e-mail: aspirant007@list.ru Basova E. M. , Ph.D. student, e-mail: 9133604663@mail.ru I.I. Polzunov Altai State Technical University, 46 Lenin Prospekt, Barnaul, Altai region, 656038, Russian Federation Abstract The process of thin-walled metal product manufacturing based on the activation of contact friction forces by rotating the ejector (the matrix bottom) intensifies the flow of metal in the deformation zone. Using the principle of minimum full deformation energy, qualitative dependences of the deforming force using various schemes of contact force activation and various friction values of the workpiece wall thickness were obtained. The use of the ejector with radial wave troughs at its end strengthens the effect of contact friction force activation and significantly improves the quality of products. Keywords stamping, thin-walled products, activation, the friction force