外圆磨削砂轮形貌仿真与工件表面粗糙度预测

对磨削砂轮形貌、外圆磨削过程及工件表面形貌进行了仿真,实现了对工件表面粗糙度的预测,并对仿真模型进行了验证。采用Johnson变换和Gabor小波变换,实现了高斯域和非高斯域的转化,在随机域内对磨削砂轮形貌进行了仿真。根据外圆磨削运动过程,通过对砂轮和工件相互作用过程的分析,建立了磨粒运动轨迹方程和工件形貌方程,在考虑磨粒切削、耕犁与摩擦作用的条件下,对外圆磨削过程进行了仿真。建立了外圆磨削模型,实现了对加工工件形貌的仿真和粗糙度预测。

Simulation of Wheel Topography and Forecasting of Roughness in Cylindrical Grinding

This paper provided a simulation and modeling method of wheel topography,cylindrical grinding process and workpiece topography,and forecasting of grinding roughness,the model was calibrated and validated based on experimental data.With both Johnson transformation method and Gabor wavelet transformation method,the inter-transformation of Gaussian field and non-Gaussian field were presented,then,the simulation of wheel topography at a random field was realized.Based on the analyses of cylindrical grinding kinematics and interaction of wheel and workpiece,the grain motion trajectory equation and workpiece topography simulation equation were gained.Considering the cutting,ploughing and rubbing action of grains,and the cylindrical grinding progress and workpiece topography were simulated,the cylindrical grinding model was established,and the workpiece surface roughness was predicted.