Інтенсифікація процесу холодної роздачі трубчастих заготовок конічним пуансоном

Abstract

In the article one of the methods of decreasing of influence of friction between a punch and a die during of expending process of tubular workpieces by conical punch is considered. The punch is made ofconsecutive surfaces which are angularly placed and form a torus, that decrease the contact surface with workpiece. On the example of expanding of workpieces made of stainless steel by calculated method using of the finite element method it is shown that the usage of punch with profiled surface brings to the increasing of expanding coefficient.