关键词: 滚轧成形过程, 花键轴, 系统参数

Abstract: Aiming to realize the high efficiency, performance and precision forming manufacture for spline shaft, the process system, forming process and characteristic of an axial-infeed rolling forming process are introduced; The meshing transmission rule between the rolling die and spline shaft during the rolling process is investigated; The effects of system parameters(the number of rolling die Nd, the tooth number of rolling die z1) on the rolling process are analyzed utilizing the ADAMS software, and then the reasonable system parameters are determined; the practical axial-infeed rolling process system is established, the real-time rotational speed of spline shaft during the rolling process is tested, and the rolling forming process of spline shaft is conducted. The results show that the meshing transmission contact ratio between the rolling die and spline shaft is less than 1; the meshing transmission stability between the rolling die and spline shaft under Nd of 3 is better than those under Nd of 2 and 4, besides, the meshing transmission stability would be improved obviously when z1 is larger than the tooth number z2 of spline shaft; the meshing transmission between the rolling die and spline shaft is stable during the rolling experiment, the tooth number of the formed spline shaft is correct, and the formed tooth profiles are uniform and accurate.

Key words: rolling forming process, spline shaft, system parameters