滚动轴承套圈外圆磨削温度场建模及数值计算

Modeling and Numerical Calculation for Temperature Field in Rolling Bearing Ring During External Cylindrical Grinding

在考虑磨削加工工艺过程、工艺参数、磨削系统热量分配的基础上,利用传热学基础方程推导出适合套圈外圆磨削加工场合的导热偏微分方程,建立磨削区域温度场模型。以某航空轴承套圈外圆加工为例分析,结果表明:磨削区域温度远高于其他部位;磨削初期磨削区域温度逐渐上升,当热源移动x/l r=0.8时进入最高温度,此时为磨屑形成阶段,之后磨屑被去除,已磨区域温度降低。

On the basis of considering grinding process,process parameters and heat distribution of grinding system,the heat conduction partial differential equation that suitable for external cylindrical grinding of ring is derived by using basic heat transfer equations,and a temperature field model in grinding area is established.The external cylindrical grinding of a type of aviation bearing ring is taken as an example to analyze,the results show that the temperature in grinding area is extremely higher than other parts;the temperature in grinding area gradually rises at beginning of grinding,and the highest temperature is entered when heat source moves x/l r=0.8,the debris is formed at this stage;after that the debris is removed,the temperature drops in grinded area.