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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 combination of gear teeth for automotive gear precision forging forming process is a new type of automotive parts manufacturing process. In order to solve the influence of forging positioning groove on tooth filling and metal folding during hot forging preforming, numerical simulation software was used to simulate the forming process of precision forging preform joint. By optimizing the key parameters of the pre-forging process mold to reduce the final forging process load, so that the final forging process load from 28,546 kN to 21,883 kN. The results show that the optimization of the process parameters improves the filling quality of the forged toothed joint and avoids the folding defects. The experimental results are consistent with the simulation results, which proves that the new process in practical application Feasibility.