锻压技术

楔横轧多台阶轴轧齐曲线优化研究

英文标题：Research on optimization of rolling curve for multi-step shaft in cross wedge rolling

单位：河北科技大学河北省楔横轧技术创新中心河北东安精工股份有限公司石家庄市道桥管理处

分类号：TH122

出版年,卷(期):页码：2019,44(12):40-48

摘要：

轧齐曲线是控制楔横轧轴件台阶平整的重要因素，目前的轧齐曲线公式，应用复杂、准确性差，实际生产需要多次修模调整。以实际生产中多台阶轴为研究对象，对其工艺方案和轧件螺旋状斜面缺陷进行分析，研究了轧齐曲线对轧件不同位置直角台阶的影响规律。根据体积平衡原理，建立在轧齐曲线作用下的模具楔形体积与其对应的轧件台阶体积的平衡关系。根据制件台阶轴端体积变化规律，利用各参数和条件建立了一次函数形式的轧齐曲线方程，采用有限元模拟和轧制实验相结合的方式对轧齐曲线进行了验证，研究结果减少了台阶轧齐修复次数，提高了轧齐数据的准确性。

The rolling curve is an important factor for controlling the step flatness of cross wedge rolling shaft, and the current rolling curve formula is complicated and the accuracy is poor. Therefore, the multiple mold adjustments are required in the actual production. For the multi-step shaft in actual production, its process plan and spiral bevel defects of rolling parts were analyzed, and the influence laws of the rolling curve on the right angle steps at different positions of rolling part were studied. According to the principle of volume balance, the equilibrium relationship between the wedge volume of mold and the corresponding step volume of rolling part was established under the action of the rolling curve. Finally, according to the law of volume change of step shaft end for part, the rolling curve equation of the first function form was established by the various parameters and conditions, and the rolling curve was verified by the combination of finite element simulation and rolling experiment. The results reduce the repairing number of step rolling and improve the accuracy of rolling data.

基金项目：

石家庄市科技局科研项目（191080071A）；河北科技大学通用航空平台开放基金项目（2015PT19）

路红岩（1993-），女，硕士研究生 E-mail：15733108597@163.com 通讯作者：张双杰（1966-），男，博士，教授，硕士生导师 E-mail：zsjzlili@163.com

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