基于DEFORM-3D汽车球头销冷挤压成形工艺研究

Study on Cold Extrusion Forming Technology of Automobile Ball Head Pin Based on DEFORM-3D

传统球头销以切削加工为主,存在材料利用率低、生产效率低、质量差等缺点。基于DEFORM-3D软件平台,对某汽车球头销采用三道冷挤压工艺进行相应模拟,分别对成形过程中材料的位移场、速度场、应变场、应力场及挤压行程-挤压力曲线、工件可能出现的缺陷及部位等模拟结果加以分析。结果表明:每一道冷挤压完成后的半成品形状规整,变形程度分布均衡,可实施性强,从理论上验证了该工件的冷挤压成形工艺总体方案先进、合理,技术路线正确,工艺设计可行。

Traditional ball head pin production gives priority to machining.There are shortcomings such as low utilization rate of material,low production efficiency and poor quality.The corresponding simulation of three cold extrusion processes was used in a certain automobile ball head pin,which was based on DEFORM-3D software platform.Then these simulated results were analyzed,like displacement field,velocity field,strain field,stress field,extrusion stroke-extrusion pressure curve of the material and possible defects of the workpiece in the forming process.The results show that semi-finished product is well-shaped,the distribution of deformation degree is balanced and the implement is strong after completion of each cold extrusion,and that the overall plan of workpiece cold extrusion forming process is advanced and reasonable,technical route is right,and process design is feasible,which are verified in theory.