磨粒阵列排布油石超精研结构化表面的研究

Research on Superfinishing Structured Surface of Whetstone with Array Abrasive Grains

基于超精研的运动学原理,利用磨粒阵列排布油石对工件外圆表面进行超精研加工,对形成结构化表面的过程进行仿真研究,分析磨粒排布参数和研磨参数对工件结构化网纹表面形貌的影响规律。研究结果表明:当工件转速一定,油石振荡频率加快,会使交叉网纹更加紧密,单个平台面积更小,结构化平台数量增加;随着磨粒间距的逐渐增大,磨粒运动轨迹更加稀疏,单个平台面积变大,平台数量减少;当油石振幅逐渐增大时,结构化网纹表面更加紧密,研磨更加充分。

Base on kinematics principle of superfinishing,the outer circle of the cylindrical surface of the workpiece is machined by using whetstone with array abrasive grains,the forming process of structured surface is simulated,and the influence of abrasive arrangement parameters and grinding parameters on the mesh pattern of structured surface of the workpiece is analyzed.The results show that,when the rotation speed of the workpiece is constant,and the oscillation frequency of the whetstone increases,the cross texture is more compact,the area of single plateau is smaller,and the number of structured plateau increases;with gradual increase of distance between abrasive grains,trajectory of abrasive grains becomes more sparse,the area of single plateau increases,and the number of structured plateau decreases;and when amplitude of the whetstone gradually increases,the structured mesh surface becomes more compact and the grinding is more sufficient.