摘要
针对内凸台截面风电轴承套圈锻件近净轧制成形难题,通过数值模拟方法研究了采用异形芯辊轧制方案的成形效果,发现轧制比较大的套圈成形过程中台阶宽度在轧制前期能够达到尺寸要求,但在台阶完全填充之后其与芯辊的贴合效果慢慢变差,且在套圈上端面附近容易出现折叠缺陷及爬辊现象;结合该内凸台截面套圈尺寸特点,提出采用芯辊双工位近净轧制成形方案,并对双工位环坯尺寸进行优化设计;根据模拟结果开展了轧制试验,成功轧制出合格的内凸台截面轴承套圈锻件。
In response to the difficult problem of near-net rolling forming of wind turbine bearing ring forgings with inner boss sections,the forming effect of rolling scheme with special-shaped core rolls is studied by numerical simulation method.It is found that the width of steps during forming process of rings with large rolling ratio meets size requirements in early stage of rolling,but the bonding effect between steps and core rolls gradually deteriorates after the steps are completely filled,and the folding defects and roll creeping phenomena are prone to occur near upper end face of rings.Then,based on size characteristics of rings with inner boss sections,a double-station near-net rolling forming scheme with core rolls is proposed,and the size of ring blank rolled by double-station is optimized and designed.Finally,the rolling tests are conducted based on simulation results,and the qualified bearing ring forgings with inner boss sections are rolled successfully.
作者
孙仲渊
邓加东
钱东升
马苏
SUN Zhongyuan;DENG Jiadong;QIAN Dongsheng;MA Su(School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Engineering Technology Research Center for Material Green Precision Forming,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan 430070,China;Zhangjiagang Zhonghuan Hailu High-End Equipment Co.,Ltd.,Zhangjiagang 215626,China)
出处
《轴承》
北大核心
2024年第11期20-25,共6页
Bearing
基金
国家重点研发计划资助项目(2022YFB3705500)
高等学校学科创新引智计划资助项目(B17034)
教育部创新团队发展计划资助项目(No.IRT_17R83)
湖北省科技创新人才及服务专项项目(2022EJD012)
江苏省碳达峰碳中和科技创新专项资金资助项目(BA2022106)。
关键词
滚动轴承
风电轴承
轴承套圈
三排圆柱滚子轴承
轧制
近净成形
有限元法
rolling bearing
wind turbine bearing
bearing ring
three row cylindrical roller bearing
rolling
near-net forming
finite element method
