汽车液压减振器外壳热挤压模设计  

Hot extrusion die design of an automobile shock absorber shell

作　　者：王少纯[1] 张晓辉[1] 陈峰伟[1] 王笑香[1] 蔡志刚[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《锻压技术》2016年第9期96-100,共5页Forging & Stamping Technology

基　　金：黑龙江省自然科学基金资助项目(E0310)

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.

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：U466[机械工程—车辆工程] TG37[交通运输工程—载运工具运用工程]