锻压技术

带法兰盘的盲孔轴零件镦挤工艺分析

英文标题：Analysis on upsetting extrusion process for blind hole shaft parts with flange

作者：霍文军刘淑梅赵毅

单位：上海工程技术大学

分类号：TG316

出版年,卷(期):页码：2017,42(1):165-168

摘要：

针对法兰盘盲孔轴零件一次镦挤成形困难的问题，结合数值模拟分析对该零件镦挤成形工艺进行多次改进，确定了两次镦挤工艺方案。基于正交试验对改进工艺进行优化，综合折叠角大小、模具载荷及应力分布等因素，确定了最佳的工艺方案。结果表明：采用挤孔-法兰盘一次镦挤-法兰盘二次镦挤成形工艺可有效减小法兰盘拐角处的折叠角度，降低法兰盘开裂的风险；当压力机工作速度为2 mm·s-1，模具圆角R1=5 mm，模具圆角R2=2.5 mm，摩擦因子为0.05时，工件成形质量较优；最后进行实际生产并获得了表面质量良好的法兰盘盲孔轴零件。

For the difficulty of one upsetting extrusion for blind hole shaft parts with flange,the upsetting extrusion process was improved many times by combining with the numerical simulation analysis, and two times upsetting extrusion process was confirmed. Then, the improved forming process of part was optimized by the orthogonal experiment, and the optimal process scheme was determined by considering folding angle, die load and stress distribution and other factors. The results show that the folding angle at the corner of flange can be reduced effectively by the forming process of extrusion hole-one times upsetting of flange-two times upsetting of flange, and the risk of cracking can also be decreased. Therefore, the workpiece quality is excellent with the press working speed of 2 mm·s-1, die fillet R1=5 mm, die fillet R2=2.5 mm and friction coefficient of 0.05. Finally, the parts of blind hole shaft with flange are obtained with the good surface quality in the actual production.

基金项目：

上海工程技术大学大学生创新训练项目（cs1605006）；上海工程技术大学研究生科研创新资助项目（16KY0514）

霍文军（1992-），女，硕士研究生 E-mail：hwj1974789683@163.com 通讯作者：刘淑梅(1968-),女,硕士,副教授 E-mail：sgwy9999@163.com

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