摘要
径向锻造过程中,当锤头和工件接触时,工件逐渐进入停止状态,而当锤头完全脱离工件后,工件在弹性杆势能的作用下进入旋转振动状态,因此,选择合适刚度的弹性杆对工件的运动状态甚至工件加工质量具有十分重要的影响。结合解析法和有限单元法,对工件和弹性杆构成的旋转振动系统进行数学建模,分析了锻造过程中工件的旋转运动状态,并讨论了弹性杆扭转刚度的选取原则,从而为实际加工过程弹性杆的选取和设计提供理论依据。
During the radial forging process,the workpiece gradually becomes still while the hammer presses it.After the hammer moves up,the rotation movement of the workpiece goes to free vibration for the potential energy of the spring bars.The appropriate torsion stiffness of spring bars has a great effect on the vibration of the workpiece and the criteria of the stiffness are the key parameters in the radial forging process.The mathematical model was built for the rotation vibration system constituted by workpiece and spring bars combined with both mathematical analytical model and FEA model.And the movement of the workpiece was analyzed and the determination criteria of the torsion stiffness was discussed,which provided the theoretical basis to design of spring bar for the actual process.
出处
《锻压技术》
CAS
CSCD
北大核心
2011年第2期5-9,共5页
Forging & Stamping Technology
基金
2005年度兵器预研基金项目
关键词
径向锻造
旋转振动
有限元分析
radial forging
rotation vibration
finite element analysis
