模具工艺参数对多楔轧制高铁空心车轴力能参数影响  

Influence of mold technological parameters on the forming force parameters in multi-wedge rolling of the railway hollow shafts

作　　者：束学道[1,2] 柳传 孙宝寿[1,2] 彭文飞[1,2] 俞澎辉 

机构地区：[1]宁波大学机械工程与力学学院,宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,宁波315211

出　　处：《塑性工程学报》2016年第3期23-28,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51475247);浙江省科技计划资助项目(2016C31018);浙江省杰出青年基金资助项目(R1110646)

摘　　要：力能参数是有效控制多楔轧制高铁空心车轴的成形质量和设备设计的关键参数。为了研究模具工艺参数对多楔轧制高铁空心车轴力能参数的影响规律,采用DEFORM有限元软件,建立了楔横轧多楔同步轧制高铁空心车轴的三维刚塑性有限元模型;对轧制力和轧制力矩进行了理论计算;分析了展宽角、成形角、模具脱空等模具工艺参数对空心车轴力能参数的影响规律。结果表明:展宽角增大使力能参数增大;成形角增大也使力能参数增大;模具脱空能够显著改善轧件的受力状况。进行了1∶5多楔轧制空心车轴实验,实验轧制力矩与数值模拟结果相对误差均在10%以内,验证了有限元模型的正确性。As one of the key technological parameters for forming hollow railway shafts in multi-wedge cross wedge rolling, the forming force parameters determine the hollow railway shafts forming quality and the designation of dies. To clarify the influence rules of mold technological parameters on the forming force parameters in multi-wedge rolling of the railway hollow shafts, this paper established three dimensional rigid-plastic finite element model of multi-wedge rolling of hollow railway shaft, and deduced the formula for calculating the rolling force and rolling moment by using the component forces via the DEFORM finite element software. Then, the influence rules of the mold technological parameters such as broadening angles, forming angles and gapped die on the forming force parameters of the hollow shafts are analyzed. The conclusion shows that the corresponding force parameters increase along with the increasing of the broadening angles and the forming angles, and the gapped die improves the stress environment. For the relative error ranges within 10 % by comparing the rolling moment measured in 1 ： 5 ratio high-speed hollow shafts rolling experiments with the finite simulating result, the validity of the finite element model is verified.

关 键 词：高铁空心车轴 多楔同步 工艺参数 力能参数 

分 类 号：TG335.19[金属学及工艺—金属压力加工]