【摘要】 塑性成形大螺旋齿形轴类件与其现有的切削工艺相比,有着节材高效的明显优势,但其均匀分度成形难度大.轧制过程中轧件滚动半径的变化幅度较大,基于此建立与传动比相关联的模具辊型曲线的求解方程.通过有限元数值模拟,对轧制过程中模具和轧件传动比的变化规律进行研究,得到较为合理的转速比变化规律和模具辊型曲线形态.以螺杆阴转子为轧制对象,通过定轴横轧实验实现其非对称大螺旋齿形的均匀分度成形,成功解决大螺旋齿形均匀分度成形难的问题.更多还原

【Abstract】 Compared with traditional machining processes,the plastic forming of big spiral teeth shafts has obvious advantage of high production efficiency and material utilization,but the forming of proper tooth graduation is difficult. The parametric equation of die profile curves,closely related to transmission ratio,was established in this article. The law of transmission ratio between die and workpiece was studied by finite element simulation,and the reliable transmission ratio variation and die profiles were obtained. Taking the driven rotor as an object of study,the proper tooth graduation of big spiral teeth of the driven rotor was realized by fixed cross rolling experiment to solve the problem of proper tooth graduation.更多还原