深沟球轴承内圈冷辗扩过程中环件直径增长规律研究

Research on the Diameter Growing Law of the Inner Ring of the Deep Groove Ball Bearing during the Cold Rolling Process

摘要: 环件冷辗扩成品质量与冷辗扩过程中环件的直径增长速度有密切的联系，而工艺参数是影响环件直径增长的主要因素。本文采用数值模拟和实验验证相结合的方法研究了工艺参数对深沟球轴承内圈冷辗扩过程环件直径增长的影响规律，研究发现芯辊进给速度对直径增长影响较大。且芯辊进给速度越大，环件直径增长越快。合理选择工艺参数有利于提高冷辗扩生产效率和稳定性。最后通过多组实验验证了数值模拟的可靠性。

Abstract: The quality of ring cold rolling is closely related to the diameter growth rate of ring in cold rolling process. The technological parameters are the main factors affecting the diameter increase of the ring. In this paper, the influence of technological parameters on the diameter growth of ring during cold rolling of deep groove ball bearing inner ring was studied by means of numerical simulation and experimental verification. It is found that the core roller feed speed has a great influence on the diameter growth, The larger the core roller feed speed, the faster the ring diameter increases. Reasonable selection of technological parameters is beneficial to improve the production efficiency and stability of cold rolling. Finally, the reliability of the numerical simulation is verified by several experiments.