锻压技术

工艺参数对薄壁铜管游动芯头振动拉拔过程拉拔力影响分析

英文标题：Influence of process parameters on drawing force in the floating plug

作者：许永强姜志宏胡沛曾艳祥李旭

单位：江西理工大学

分类号：TG394

出版年,卷(期):页码：2017,42(3):69-72

摘要：

在金属塑性成形中加入振动，可以有效降低材料变形抗力并提高产品质量。以薄壁铜管游动芯头拉拔为研究对象，分析了振动对铜管拉拔过程中拉拔力的影响，并通过有限元分析软件MARC，对不同的工艺参数（拉拔速度、外模模角和芯头锥角）进行数值模拟。研究结果表明：针对本模型，存在一个最佳外模半锥角和芯头锥角组合（外模半锥角α为12°，芯头锥角β为9°），使得薄壁铜管游动芯头振动拉拔过程中的拉拔力最小，而拉拔速度对拉拔力的影响较小。

The vibration adding in metal plastic forming can effectively reduce the deformation resistance of material and improve the quality of products. Thus, for the thinwall copper tube floating plug drawing, the influence of vibration on the drawing force of copper tube in the drawing process was analyzed, and different process parameters (drawing speed, external mold angle and cone angle) were simulated by the finite element analysis software MARC. The result shows that based on this model, the best parameter combination with the half cone angle of external die of 12°and the plug cone angle of 9°exists. Thus, the drawing force in the floating plug vibration drawing process of thinwalled copper tube is the minimum, and the influence of drawing speed on the drawing force is smaller.

基金项目：

国家自然科学基金资助项目（50665003，51464017）

许永强（1992-），男，硕士研究生姜志宏（1977-），男，硕士，副教授

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