锻压技术

低频振动辅助花键齿摆辗成形金属流动规律

英文标题：Metal flow law on low-frequency vibration-assisted swing rolling for spline tooth

作者：朱宁远左寿彬陈世豪赖文坤陈俊郎

单位：江西理工大学

分类号：TG316

出版年,卷(期):页码：2023,48(11):79-87

摘要：

为探明低频振动对摆辗花键齿金属流动的影响，对不同振型参数下的花键齿金属流动状况进行了数值模拟分析及实验研究。结果表明：工件主动变形区金属呈辐射状向四周流动，且工件边缘的金属流动最剧烈，高度方向上金属流动有明显的分流面，以分流面为基础，由上表面至下表面金属流动速度逐渐减小，离分流面越远的金属切向流动速度越小。低频振动可以有效地改善工件变形的均匀性和齿形的填充效果，频率和振幅越大，越有助于金属材料向轴向和径向流动，花键齿齿形的成形效果越好。振动辅助花键齿摆辗实验获得了齿形饱满、上下材料流动均匀的花键齿摆辗件，其结果与数值模拟的结果基本一致。

In order to explore the influence of low-frequency vibration on metal flow of swing rolling for spline teeth, the metal flow condition of spline teeth under different vibration mode parameters were numerical simulated and experimentally researched. The results show that the metal in the active deformation zone of workpiece flows radially to the surroundings, and the metal flow is the most violent at the workpiece edge. There is an obvious shunt plane of metal flow in the height direction. Based on the shunt plane, the metal flow velocity decreases gradually from the upper surface to the lower surface, and the farther away from the shunt plane, the smaller the tangential flow velocity of metal. Low-frequency vibration can effectively improve the uniformity of workpiece deformation and the filling effect of tooth shape. The greater the frequency and amplitude, the more conductive to the axial and radial flow of metal materials, and the better the forming effect of spline tooth profile. The vibration-assisted swing rolling experiment of spline tooth obtains the spline tooth swing rolling part with full tooth shape and uniform upper and lower material flow, and the results are basically consistent with the numerical simulation results.

基金项目：

国家自然科学基金资助项目（51905241）；江西省自然科学基金资助项目（20202BABL214033）

作者简介：朱宁远（1986-），男，博士，副教授，E-mail：zhuningyuan@126.com

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