基于RomaxCLOUD的主轴轴承优化设计及试验研究
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摘要
以某型号机床主轴轴承7014C/P4为例,基于RomaxCLOUD建立轴-轴承系统模型,以轴承的刚度、疲劳寿命、最小油膜厚度和套圈次表层最大剪切应力、球最大旋滚比作为目标函数,对内外圈沟曲率半径系数、球径和球数进行优化设计,优化结果为:内圈沟曲率半径系数为0.54,外圈沟曲率半径系数为0.525,球径为12.7mm,球数为19。并对优化设计的7014 C/P4轴承进行了强化寿命试验,优化设计的7014 C/P4主轴轴承振动、温升平稳,未出现疲劳剥落,满足要求。
Taking the bearings 7014 C/P4 in a type of machine tool as examples,the shaft-bearing system model is built based on Romax CLOUD. The stiffness,fatigue life,minimum oil film thickness,maximum shear stress in subsurface of rings and maximum spin-to-roll ratio of balls are taken as objective functions,and the optimal design is carried out for groove curvature radius coefficients of inner and outer rings,diameter of balls and number of balls. The optimal results show that the groove curvature radius coefficient of inner ring is 0. 54,the groove curvature radius coefficient of outer ring is 0. 525,the diameter of ball is 12. 7 mm and the number of balls are 19. The accelerated life test is done for optimal spindle bearings 7014 C/P4. The vibration and temperature rise of optimal bearings 7014 C/P4 are stationary,and the fatigue flaking is not appeared. The requirements are met.
Taking the bearings 7014 C/P4 in a type of machine tool as examples,the shaft-bearing system model is built based on Romax CLOUD. The stiffness,fatigue life,minimum oil film thickness,maximum shear stress in subsurface of rings and maximum spin-to-roll ratio of balls are taken as objective functions,and the optimal design is carried out for groove curvature radius coefficients of inner and outer rings,diameter of balls and number of balls. The optimal results show that the groove curvature radius coefficient of inner ring is 0. 54,the groove curvature radius coefficient of outer ring is 0. 525,the diameter of ball is 12. 7 mm and the number of balls are 19. The accelerated life test is done for optimal spindle bearings 7014 C/P4. The vibration and temperature rise of optimal bearings 7014 C/P4 are stationary,and the fatigue flaking is not appeared. The requirements are met.
引文
[1]邓松.轴承滚道疲劳损伤机理研究[D].武汉:武汉理工大学,2014.
[2]HARRIS T A,KOTZALAS M N.滚动轴承分析[M].罗继伟,马伟,杨咸启等,译.北京:机械工业出版社,2009.
[3]张世兵.高速数控机床主轴轴承精度及其保持性分析[D].洛阳:河南科技大学,2014.
[4]伍良生,刘振宇,张威,等.高速主轴用角接触球轴承旋滚比分析[J].北京工业大学学报,2006,32(8):677-682.
[5]王东峰,叶军,杨伯原,等.双列角接触球轴承的多目标优化设计[J].轴承,2007(8):8-10.
[6]孙守林,张世飞,董蕙敏,等.基于变载荷的滚动轴承疲劳寿命强化试验[J].轴承,2015(10):32-36.
[7]李兴林,张永恩,张仰平,等.滚动轴承疲劳寿命强化试验评估方法研究[J].轴承,2003(4):26-29,33.
[8]邓四二,贾群义,薛进学.滚动轴承设计原理[M].北京:中国标准出版社,2014.
[9]李云雁,胡传荣.试验设计与数据处理[M].北京:化学工业出版社,2008.
[2]HARRIS T A,KOTZALAS M N.滚动轴承分析[M].罗继伟,马伟,杨咸启等,译.北京:机械工业出版社,2009.
[3]张世兵.高速数控机床主轴轴承精度及其保持性分析[D].洛阳:河南科技大学,2014.
[4]伍良生,刘振宇,张威,等.高速主轴用角接触球轴承旋滚比分析[J].北京工业大学学报,2006,32(8):677-682.
[5]王东峰,叶军,杨伯原,等.双列角接触球轴承的多目标优化设计[J].轴承,2007(8):8-10.
[6]孙守林,张世飞,董蕙敏,等.基于变载荷的滚动轴承疲劳寿命强化试验[J].轴承,2015(10):32-36.
[7]李兴林,张永恩,张仰平,等.滚动轴承疲劳寿命强化试验评估方法研究[J].轴承,2003(4):26-29,33.
[8]邓四二,贾群义,薛进学.滚动轴承设计原理[M].北京:中国标准出版社,2014.
[9]李云雁,胡传荣.试验设计与数据处理[M].北京:化学工业出版社,2008.