内花键冷挤压工艺的优化  

Optimization of cold extrusion process for internal spline

作　　者：雷建波 郑晓凯[2] 杨显红[2] 

机构地区：[1]海装重庆局,重庆400042 [2]重庆大学材料科学与工程学院,重庆400044

出　　处：《锻压装备与制造技术》2013年第2期80-81,共2页China Metalforming Equipment & Manufacturing Technology

摘　　要：传统的内花键冷挤压工艺为直接成形,坯料对凹模作用力大,花键不易从凹模取出。基于此,运用DEFORM-3D有限元软件,采用间接成形方式对内花键冷挤压过程进行了模拟。结果表明,间接成形虽然增加了一道预成形工序,但能够大大提高生产效率、端面尺寸精度及模具使用寿命,成形孔最优尺寸尴取20.5mm,入模半角α/2取25°。The traditional cold extrusion of internal spline is generated by direct forming process, in which tile force from the＂ blank to the die is big and the spline is uneasy to be taken out. So the cold extrusion process of internal spline has been simulated by use of FE software DEFORM-3D based on indirect forming mode. The results show that indirect forming which needs a pre-forming extra process can not only improve the production efficiency and the tool working life greatly but also guarantee the dimension accuracy of the end. The optimal forming hole size equals 20.5mm and the half-angle α/2 equals 25°

关 键 词：冷挤压 内花键 DEFORM-3D 模拟 预成形 

分 类 号：TG376.3[金属学及工艺—金属压力加工]