锻压技术

内压对汽车桥壳管件充液压制成形影响的分析与试验

英文标题：Analysis and test of influence of internal pressure on hydroforming for automobile axle housing tube

单位：1.唐山学院机电工程学院河北唐山 063000 2.宁波圣龙汽车动力系统股份有限公司浙江宁波 315099 3.唐山亚特专用汽车有限公司河北唐山 063000

分类号：TG394

出版年,卷(期):页码：2025,50(6):95-101

摘要：

充液压制成形工艺是胀压成形桥壳管件的关键步骤，其中，内压为影响管件成形质量的重要参数。首先，通过分析内压作用下充液压制成形桥壳管件的变形过程，提出了内压的设计方法，给出了内压变化系数Kp。然后，针对某载重为6.5 t的货车桥壳管件的充液压制成形，通过设定不同的Kp，进行了有限元仿真分析，得到了内压对汽车桥壳管件成形的影响规律，并基于桥壳管件成形质量和模具力大小，得出了内压变化系数Kp的工艺窗口变动范围为0.07~0.13。最后，在专用的设备上进行了充液压制成形试验，试验结果与有限元模拟结果吻合，为大型复杂截面管件充液压制成形工艺提供了参考。

The hydroforming process is a critical step in the bulging forming of axle housing tubes, and the internal pressure is an important parameter affecting the forming quality of tube. Firstly, by analyzing the deformation process of hydroforming axle housing tube under internal pressure, the internal pressure design method was proposed, and the internal pressure variation coefficient Kp was given. Furthermore, for the hydroforming axle housing tube of truck with a load capacity of 6.5 t, the finite element simulation analysis was conducted by setting different Kp, and the influence rule of internal pressure on the forming of automobile axle housing tube was obtained. Based on the forming quality and the die force of axle housing tube, the range of the internal pressure variation coefficient Kp was 0.07-0.13. Finally, the hydroforming test was carried out on a dedicated equipment, and the test results were consistent with the finite element simulation results.Thus, the results provide a reference for the hydroforming process of large-complex-section tubes.

基金项目：

河北省高等学校科学技术研究项目（QN2019335）；河北省智能装备数字化设计及过程仿真重点实验室项目；唐山市科技计划项目（21130206D）；唐山学院博创基金（tsxybc201915）

作者简介：刘超（1982-），男，博士，副教授,E-mail：33430794@qq.com;通信作者：吴娜（1980-），女，博士，教授,E-mail：myletter2006@163.com

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