Two step forging process of spur gear based on rigid parallel motion

To improve the forging process of spur gear,the metal flow rule is investigated in detail,and a hypothesis of radial rigid-parallel-motive (RPM) flow mode is given. Based on the RPM mode a novel specific gear forging technology is put forward by introduced upend forging process and constrained divided-flow technique. Firstly,finite element method is used to simulate the upend forging pre-forming and RPM finish forging,and equivalent stress field and load-stroke curve are investigated. Secondly,a correspondi...     

汽车B柱加强板成型性模拟分析及优化

针对DP600型汽车B柱加强板进行了工艺分析及拉延模面设计,并基于数据模拟软件对成型过程的模拟分析,对汽车B柱加强板进行了产品结构改进和工艺设计.利用仿真结果预测了产品设计的可行性,提出并验证了设计修改方案,模拟结果与试验结果吻合.     

大型客车后桥壳半轴的真空电子束焊接

介绍了用真空电子束焊接大型客车后桥壳半轴的工艺方法，并就焊接过程中存在的主要问题进行了分析。通过试验和生产验证，所焊接的后桥壳体精度高、抗疲劳性能好、质量稳定。