EFFECT OF TEMPERATURE, FRICTION, AND PRESSING SPEED ON FORMING FORCE IN BULK FORMING OF GEAR DETAILS FROM TUBE WORKPIECE

Abstract

Today in the industrial sector, block stamping technology plays an important role in manufacturing hollow shaft gear parts. Forming force is a necessary technological parameter for choosing suitable forming equipment. The process of stamping a block of gear parts from a tube blank is simulated using the finite element method (FEM) to evaluate the influence of input parameters on the forming force when stamping. In this study, the initial workpiece temperature, friction coefficient (workpiece-die contact friction), and different stamping speeds were used in numerical simulation. The numerical simulation results provide a force-stroke diagram for each specific case. Thereby clarifying the influence of initial workpiece temperature, friction coefficient, and stamping speed on forming force. The results show that increasing the initial workpiece temperature causes the forming force to increase. Similarly, as the friction coefficient increases (workpiece-die contact friction increases), the forming force increases, and as the stamping speed increases, the forming force decreases. The research will help perfect the technology of stamping blocks of gear parts using numerical simulation. The research results will be the basis for determining the forming force from which to choose the appropriate equipment.