长内花键轴向进给滚轧成形过程材料流动行为  

Flow behavior of material during through-feed rolling process of long inner spline

作　　者：徐光斌 张大伟[2] 刘秋彤 鞠辉 李绪成 陈林佺 XU Guangbin;ZHANG Dawei;LIU Qiutong;JU Hui;LI Xucheng;CHEN Linquan(Sinotruk Jinan Power Co.,Ltd.,Jinan 250220,China;Xi’an Key Laboratory of Intelligent Equipment and Control,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]中国重汽集团济南动力有限公司,山东济南250220 [2]西安交通大学西安市智能装备与控制重点实验室,陕西西安710049

出　　处：《重型机械》2024年第3期47-53,共7页Heavy Machinery

基　　金：国家自然科学基金(51675415,51305334);陕西省重点研发计划(2021GXLH-Z-049);中国重汽集团对外技术合作(产学研)项目。

摘　　要：轴向进给滚轧是一种局部加载、轴向增量变形的塑性成形工艺,为长内花键提供了一种高性能、省力成形制造途径。采用数值方法研究分析了采用3滚轧模具的传动轴花键毂内花键轴向进给滚轧过程的材料流动行为。结果表明:材料的流动和变形主要发生在坯料的内表层,外表面基本没有材料流动;内花键轴向进给滚轧过程材料流动速度沿轴向逐渐减小,而累积的材料位移在不同成形区分布基本类似,只是位移量值有区别;不同滚轧模具切入区结构下滚轧过程中材料流动、位移的分布特征和演化特征类似,采用斜切式滚轧模具的滚轧过程中材料轴向流动倾向大于采用径缩式滚轧模具的滚轧过程轴向材料流动。The through-feed rolling process is a plastic forming process with local loading and axial-incremental deformation,and it provides a high-performance and force-saving manufacturing way for long inner spline.The flow behavior of material during through-feed rolling process with three rolling dies for inner spline of splined hub of drive shaft was analyzed by numerical method.The results indicated that the material flow and deformation mainly occur in inner surface layer of billet,and there is no material flow in outer surface;flow speed of material reduce along axial direction during through-feed rolling process of inner spline,but the distributions of accumulated material displacement in different deformation zone are basically the same and only the magnitudes of displacement show some differences;the distribution and evolution of the material flow and displacement under different structures of entry-angle section of rolling die are basically the same,and the axial flow of material during rolling process by using oblique cutting rolling dies are larger than that by using radial shrinkage rolling dies.

关 键 词：长内花键 花键滚轧 轴向进给滚轧 材料流动 材料位移 

分 类 号：TG306[金属学及工艺—金属压力加工] TG331