结合齿预锻件的精密锻造成形工艺探讨  

Research on precision forging process for pre-forging combined gear

作　　者：王黎 

机构地区：[1]上海汽车变速器有限公司,上海201818

出　　处：《锻压技术》2015年第4期9-13,共5页Forging & Stamping Technology

摘　　要：汽车变速箱的结合齿精密锻造成形工艺是汽车零部件的一种新型制造工艺。为了解决热锻预成形时锻件定位凹槽对齿形充填及金属折叠的影响,应用数值模拟软件对结合齿精密锻造的预锻件成形工艺进行模拟研究。通过优化预锻工序模具的关键参数来降低终锻工序的载荷,使终锻工序载荷由28546 k N降到21883 k N。并进行了结合齿的热锻成形试验,试验结果表明,优化工艺参数后改善了结合齿锻件的充填质量并避免了折叠缺陷,试验结果与模拟结果相吻合,证明了该新工艺在实际应用中的可行性。The precision forging process of combined gear in auto gearbox is a relatively new manufacturing process for auto components. The pre-forging process of combined gear was simulated by numerical simulation software in order to research the influences of positioning groove on the filling of gear teeth and fold of metal. Through optimizing the key parameters of pre-forging die, the forging load of the final forging decreased from 28546 kN to 21883 kN. Consequently, some hot forging experiments of combined gear were carried out, experi- mental resuhs show that the gear teeth with good filling condition and little folding defects is obtained by the optimized process parameters, and there is a good agreement between the experimental and simulation results. The possibility to put the new process into practice is proved.

关 键 词：结合齿 预锻件 精密锻造 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]