强化研磨喷射时间对内圈沟道尺寸和残余应力的影响

Influence of Injection Time in Strengthened Grinding on Size and Residual Stress of Inner Ring Raceway

以SKF61910深沟球轴承内圈加工为例,基于Abaqus/Explicit建立强化研磨三维随机碰撞模型,分析强化研磨喷射时间对轴承内圈沟道尺寸和残余应力的影响,结果表明:随喷射时间增加,在2 min前内圈沟道尺寸增大,2~12 min时内圈沟道尺寸减小,12 min后不再显著变化;随喷射时间增加,轴承内圈沟道表面残余应力先增大后趋于稳定。实际强化研磨试验后测量内圈沟道尺寸和残余应力变化,结果与仿真分析变化趋势一致,且误差在允许范围之内。

Taking processing of inner ring of SKF61910 deep groove ball bearing as an example,a three-dimensional random collision model of strengthened grinding is established based on Abaqus/Explicit,and the influence of injection time in strengthened grinding on size and residual stress of inner ring raceway is analyzed.The results show that:with the increase of injection time,the size of inner ring raceway increases before 2 min,decreases during 2~12 min,and no significant change after 12 min;with the increase of injection time,the residual stress of bearing inner ring raceway surface increases first and then tends to be stable.The variation of size and residual stress of inner ring raceway is measured after actual strengthened grinding test,the results are consistent with variation trend of simulation analysis,and the error is within the allowable range.