研究高速磨削条件下砂轮线速度、切削深度等工艺参数对氧化锆陶瓷工件加工表面质量的影响。通过对单颗磨粒切削氧化锆陶瓷试件过程进行仿真,确定磨粒切削深度与切削速度对磨削力和磨削表面形貌的影响。同时,采用金刚石砂轮对氧化锆陶瓷进行平面磨削实验,获取磨削力和表面形貌等实验数据,对仿真结果进行实验验证。随着切削深度从2μm增大到8μm,单颗磨粒磨削力呈单调递增的趋势,工件表面质量逐渐恶化;当切削深度保持在2μm时,砂轮线速度对工件表面形貌影响不大;当切削深度加大到4μm以上时,提高砂轮线速度可以有效减轻磨削表面的破碎损伤。
The study was carried out to find out the effects of wheel speed, grinding depth, and other grinding parameters on the surface qualities of zirconia ceramic workpiece under the condition of high speed. Singlegrit simulation has been utilized to analyze the influence of abrasive cutting depth and cutting speed on grinding force and surface morphology. Through the grinding experiment, in which a diamond grinding wheel was equipped to grind zirconia ceramics, grinding forces and surface topography ima- ges were obtained and used to verify the simulation results. With the increase of the grinding depth from 2 pm to 8 μm, the grinding force of single diamond abrasive grain was increasing monotonically, and the workpiece surface quality was gradually deteriorated. When the grinding depth was kept at 2 μm, the workpiece surface morphologies became less dependent on the wheel speed; when the grinding depth exceeded 4μm, the wheel speed increase could effectively reduce the broken damage on the grinding surface.