Optimization of structural parameters of rotary swaging dies based on orthogonal experiments

Abstract

In order to alleviate the problem of excessive stress and easy wear on the rotary swaging die during the process of rotary swaging high-strength tungsten wire, the die structure was changed, the transition taper was designed, and the structural parameters were optimized to achieve the purpose of reducing the stress and extending the life of the rotary swaging die. The results show that the improvement of the die structure can largely reduce the effective stress of the die, and it is found that the transition fillet has the greatest influence on the effective stress of the die, followed by the cone angle of the transition taper, and the length of the transition taper has the least effect on the effective stress of the die. Finally, the optimal die structure parameters after improvement were obtained by orthogonal experiments: the cone angle of transition taper is 4°, the length of transition taper is 10 mm, and the radius of transition fillet is 3 mm.