摘要
针对公转-自转工况下滚针轴承保持架失效问题,基于滚动轴承动力学理论,建立了公转-自转工况下的滚针轴承动力学微分方程组,采用GSTIFF变步长积分算法对轴承进行了求解。以保持架应力来评估保持架强度,开展了轴承工况条件对保持架应力影响的研究并指导保持架选材。结果表明,有公转工况下,保持架应力明显大于无公转工况;滚针与保持架碰撞力主要影响滚针与保持架接触区处的应力值,并随碰撞力的增大而增大;保持架离心力主要影响保持架横梁斜坡夹角处的应力,并随离心力的增大而增大。公转速度较低时,保持架材料选0Cr18Ni9Ti更合适;公转速度较高时,则选20CrMo更合适。
Aiming to solving the problem of cage failure under revolution-rotation,based on the dynamics theory of rolling bearing,the dynamics differential equations of needle roller bearing coupled with revolution-rotation working condition are established,and GSTIFF variable step length integral algorithm is adopted to solve the bearing.Cage stress is used to evaluate cage strength,and the influence of bearing working conditions on cage stress is studied to guide cage material selection.The results show that the cage stress with revolution is obviously greater than that without revolution.The impact force between the needle roller and the cage mainly affects the stress at the contact place where is between the needle roller and the cage,which increases with the increase of the impact force,while the centrifugal force of the cage mainly affects the stress at the angle of the beam slope of the cage,which increases with the increase of the centrifugal force.The 0Cr18Ni9Ti can be selected when revolution velocity is low,20CrMo can be selected when revolution velocity is high.
作者
王玉波
杨海生
徐曼君
崔永存
邓四二
Wang Yubo;Yang Haisheng;Xu Manjun;Cui Yongcun;Deng Sier(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Beijing Institute of Space Launch Technology,Beijing 100076,China;Post-Doctoral Workstation,Bahuan Technology Group Co.,Ltd.,Taizhou 318000,China;National United Engineering Laboratory for Advanced Bearing Tribology,Luoyang 471023,China)
出处
《机械传动》
北大核心
2021年第12期117-123,135,共8页
Journal of Mechanical Transmission
关键词
公转-自转
动力学
滚针轴承
保持架强度
Revolution-rotation
Dynamics
Needle roller bearing
Strength of cage
