圆柱零件无心磨削时导轮廓形研究

通过对砂轮、导轮、工件、托板坐标系相互位置的分析，建立了导轮廓形的数学模型，得到圆柱零件无心磨削时导轮廓形的表面特征。经过实验得出了导轮廓形面与工件半径的关系曲线。理论分析和计算表明：位移量h存在时，导轮表面是准双曲面的一部分。导轮廓形的曲率随着工件半径r的增大而减少。提出了用金刚石笔修整导轮廓形时的机床调整参数。通过数值模拟，建立了目标函数。应用参数化法获得最优参数值，提高了无心磨削圆柱零件的加工精度。

Effect of guide pulley configuration during centreless grinding of cylindrical workpiece

Abatract Based on the analysis of relative position of the grinding wheel,guide pulley,workpiece and carrier,a mathematic mod-el for guide pulley configuration during centreless grinding of cylindrical workpiece was established.The relative curve of the pul-ley configuration and the workpiece radius was derived.Theoretical analysis and calculation results indicated that,when there ex-ists displacement h,the guide pulley surface constitutes a part of a quasi-hypoid.The curvature of the pulley configuration de-creased along with the workpiece radius r increasing.Some machining parameters were suggested for diamond dressing point todress the pulley configuration.By means of value simulation and parameters optimization,the machining accuracy of cylindricalworkpiece can be improved obviously.