锻压技术

起动机减速轴精密成形数值模拟与工艺研究

英文标题：Numerical simulation of precision forming technology and research for starter speed-reducer shaft

作者：张瑞妍葛如海江强刘德仿王平

关键词：减速轴数值模拟冷挤压成形

分类号：TG316.3；TG320

出版年,卷(期):页码：2010,35(3):15-18

摘要：

运用UG/NX软件对减速轴及模具建立物理模型，并选取刚粘塑性理论和剪切摩擦模型，基于Deform软件对其冷挤压成形过程进行仿真。得出成形过程中各阶段成形力和应力、应变图，并分析了中心孔的分流作用，确定金属流动规律和填充规律；试模试验与仿真结果吻合，验证了模型的正确性和工艺的合理性，并提出防止中心凸台填充不满的措施。研究结果对冷挤压成形有限元仿真和塑性成形工艺控制具有指导意义。

Physical models of speed-reducer shaft and dies were established by using UG/NX software.Based on Deform software and the selected rigid viscoplastic theory and shear friction model, the cold extrusion process of speed-reducer shaft was simulated. Then forming force, stress and strain at various stages were got and the diversion of center hole was analyzed in forming process. The metal flow and filling rules were also got. The results of simulation made good agreement to the model test and the correctness of the model and process rationality were varified and the measures to avoid unfill forming of center column were put forward. This research plays a guiding role in the simulation of the cold extrusion forming and control of the plastic forming technical parameters.

基金项目：

江苏省苏北科技创新引导资金(BN2008016)

参考文献：

［1］李传民，王向丽，闫华军.金属成形有限元分析实例指导教程[M].北京：机械工业出版社，2006.
［2］李建国，汤文成，刘德仿.内齿轮冷挤压精锻成形数值模拟与工艺研究[J].锻压技术，2008，33(3):75-77.
［3］寇淑清，杨慎华，邓春萍.直齿圆锥齿轮冷闭塞锻造数值模拟分析[J］.中国机械工程，2003，14(20):1721-1725.
［4］Wadesh K S，Amrit D，Ravi Kumar D. Optimization of the design parameters of modified die in hydro-mechanical deep drawing using LS-DYNA
［J］. Int.J.Adv. Manuf. Technol.， 2008，38（12）:32-37.
［5］Sheng Z Q，Strazzanti M. New developments in design and manufacturing automotive bulb shields
［J］. Int.J.Adv. Manuf. Technol.，2008，39(56):431-438.
［6］薛勇，张治民，王科.圆柱齿轮镦挤成形约束分流的数值模拟
［J］.锻压技术，2007，23(3):115-119.
［7］夏巨谌.金属塑性成形工艺及模具设计
［M］.北京：机械工业出版社，2007.

服务与反馈：

【文章下载】【加入收藏】