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)

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