锻压技术

汽车液压减振器外壳热挤压模设计

英文标题：Hot extrusion die design of an automobile shock absorber shell

作者：王少纯张晓辉陈峰伟王笑香蔡志刚

单位：哈尔滨工业大学

关键词：减振器外壳热挤压工艺一次成形模具设计焊缝渗漏

分类号：TG376.2

出版年,卷(期):页码：2016,41(9):96-99

摘要：

针对汽车减振器外壳结构特点，通过工艺分析提出通过正向挤压和侧向挤压复合工艺实现热挤压一次

成形的新工艺的解决方案和设计路线，设计了减振器外壳热挤压模具。凸模头部采用平底锥形设计，可以降

低单位挤压力；凹模采用挤压筒和挤压凹模的组合结构，可以解决凹模加工工艺性问题及便于零件的退卸料

；并论述了模具的结构原理和工作原理。为确保模具符合热挤压实验的要求，对模具的关键部件进行了理论

分析和计算，并通过实验方法成形出了表面光滑无缺陷、尺寸精度和力学性能均符合要求的筒形件，实验结

果表明了该工艺方案和模具结构设计的可行性和实用性。

For the structure characteristics of the automobile shock absorber shell, the solutions and

design route of the new process, which realized the hot extrusion integral forming by

composite process of forward extrusion and lateral extrusion,were put forward by forming

process analysis, and the hot extrusion die of the shock absorber shell was designed.

Furthermore, the head of punch was designed as a flat bottomed cone, and the unit extrusion

pressure was reduced. The die was designed as the composite structure of extrusion container

and extrusion die to solve the problem of the manufacturing technology of die and the

convenient withdrawal of the part. Then, the structure principle and working principle of the

die were discussed to ensure the die to satisfy the requirements of the hot extrusion

experiment. A theoretical analysis and calculation of key components of the die were carried

out. And through the experimental method, the cylindrical part is with smooth surface and

without defects, its size accuracy and mechanical properties in line with the requirements

were formed out. The experimental results show that the process scheme and the die structure

design are feasible and practical.

基金项目：

黑龙江省自然科学基金资助项目(E0310)

王少纯(1963-)，男，博士，副教授张晓辉（1972-），男，硕士，工程师

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